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CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n(function(mod) {\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n    mod(require(\"../../lib/codemirror\"));\n  else if (typeof define == \"function\" && define.amd) // AMD\n    define([\"../../lib/codemirror\"], mod);\n  else // Plain browser env\n    mod(CodeMirror);\n})(function(CodeMirror) {\n  \"use strict\";\n\n  var noOptions = {};\n  var nonWS = /[^\\s\\u00a0]/;\n  var Pos = CodeMirror.Pos, cmp = CodeMirror.cmpPos;\n\n  function firstNonWS(str) {\n    var found = str.search(nonWS);\n    return found == -1 ? 0 : found;\n  }\n\n  CodeMirror.commands.toggleComment = function(cm) {\n    cm.toggleComment();\n  };\n\n  CodeMirror.defineExtension(\"toggleComment\", function(options) {\n    if (!options) options = noOptions;\n    var cm = this;\n    var minLine = Infinity, ranges = this.listSelections(), mode = null;\n    for (var i = ranges.length - 1; i >= 0; i--) {\n      var from = ranges[i].from(), to = ranges[i].to();\n      if (from.line >= minLine) continue;\n      if (to.line >= minLine) to = Pos(minLine, 0);\n      minLine = from.line;\n      if (mode == null) {\n        if (cm.uncomment(from, to, options)) mode = \"un\";\n        else { cm.lineComment(from, to, options); mode = \"line\"; }\n      } else if (mode == \"un\") {\n        cm.uncomment(from, to, options);\n      } else {\n        cm.lineComment(from, to, options);\n      }\n    }\n  });\n\n  // Rough heuristic to try and detect lines that are part of multi-line string\n  function probablyInsideString(cm, pos, line) {\n    return /\\bstring\\b/.test(cm.getTokenTypeAt(Pos(pos.line, 0))) && !/^[\\'\\\"\\`]/.test(line)\n  }\n\n  function getMode(cm, pos) {\n    var mode = cm.getMode()\n    return mode.useInnerComments === false || !mode.innerMode ? mode : cm.getModeAt(pos)\n  }\n\n  CodeMirror.defineExtension(\"lineComment\", function(from, to, options) {\n    if (!options) options = noOptions;\n    var self = this, mode = getMode(self, from);\n    var firstLine = self.getLine(from.line);\n    if (firstLine == null || probablyInsideString(self, from, firstLine)) return;\n\n    var commentString = options.lineComment || mode.lineComment;\n    if (!commentString) {\n      if (options.blockCommentStart || mode.blockCommentStart) {\n        options.fullLines = true;\n        self.blockComment(from, to, options);\n      }\n      return;\n    }\n\n    var end = Math.min(to.ch != 0 || to.line == from.line ? to.line + 1 : to.line, self.lastLine() + 1);\n    var pad = options.padding == null ? \" \" : options.padding;\n    var blankLines = options.commentBlankLines || from.line == to.line;\n\n    self.operation(function() {\n      if (options.indent) {\n        var baseString = null;\n        for (var i = from.line; i < end; ++i) {\n          var line = self.getLine(i);\n          var whitespace = line.slice(0, firstNonWS(line));\n          if (baseString == null || baseString.length > whitespace.length) {\n            baseString = whitespace;\n          }\n        }\n        for (var i = from.line; i < end; ++i) {\n          var line = self.getLine(i), cut = baseString.length;\n          if (!blankLines && !nonWS.test(line)) continue;\n          if (line.slice(0, cut) != baseString) cut = firstNonWS(line);\n          self.replaceRange(baseString + commentString + pad, Pos(i, 0), Pos(i, cut));\n        }\n      } else {\n        for (var i = from.line; i < end; ++i) {\n          if (blankLines || nonWS.test(self.getLine(i)))\n            self.replaceRange(commentString + pad, Pos(i, 0));\n        }\n      }\n    });\n  });\n\n  CodeMirror.defineExtension(\"blockComment\", function(from, to, options) {\n    if (!options) options = noOptions;\n    var self = this, mode = getMode(self, from);\n    var startString = options.blockCommentStart || mode.blockCommentStart;\n    var endString = options.blockCommentEnd || mode.blockCommentEnd;\n    if (!startString || !endString) {\n      if ((options.lineComment || mode.lineComment) && options.fullLines != false)\n        self.lineComment(from, to, options);\n      return;\n    }\n    if (/\\bcomment\\b/.test(self.getTokenTypeAt(Pos(from.line, 0)))) return\n\n    var end = Math.min(to.line, self.lastLine());\n    if (end != from.line && to.ch == 0 && nonWS.test(self.getLine(end))) --end;\n\n    var pad = options.padding == null ? \" \" : options.padding;\n    if (from.line > end) return;\n\n    self.operation(function() {\n      if (options.fullLines != false) {\n        var lastLineHasText = nonWS.test(self.getLine(end));\n        self.replaceRange(pad + endString, Pos(end));\n        self.replaceRange(startString + pad, Pos(from.line, 0));\n        var lead = options.blockCommentLead || mode.blockCommentLead;\n        if (lead != null) for (var i = from.line + 1; i <= end; ++i)\n          if (i != end || lastLineHasText)\n            self.replaceRange(lead + pad, Pos(i, 0));\n      } else {\n        var atCursor = cmp(self.getCursor(\"to\"), to) == 0, empty = !self.somethingSelected()\n        self.replaceRange(endString, to);\n        if (atCursor) self.setSelection(empty ? to : self.getCursor(\"from\"), to)\n        self.replaceRange(startString, from);\n      }\n    });\n  });\n\n  CodeMirror.defineExtension(\"uncomment\", function(from, to, options) {\n    if (!options) options = noOptions;\n    var self = this, mode = getMode(self, from);\n    var end = Math.min(to.ch != 0 || to.line == from.line ? to.line : to.line - 1, self.lastLine()), start = Math.min(from.line, end);\n\n    // Try finding line comments\n    var lineString = options.lineComment || mode.lineComment, lines = [];\n    var pad = options.padding == null ? \" \" : options.padding, didSomething;\n    lineComment: {\n      if (!lineString) break lineComment;\n      for (var i = start; i <= end; ++i) {\n        var line = self.getLine(i);\n        var found = line.indexOf(lineString);\n        if (found > -1 && !/comment/.test(self.getTokenTypeAt(Pos(i, found + 1)))) found = -1;\n        if (found == -1 && nonWS.test(line)) break lineComment;\n        if (found > -1 && nonWS.test(line.slice(0, found))) break lineComment;\n        lines.push(line);\n      }\n      self.operation(function() {\n        for (var i = start; i <= end; ++i) {\n          var line = lines[i - start];\n          var pos = line.indexOf(lineString), endPos = pos + lineString.length;\n          if (pos < 0) continue;\n          if (line.slice(endPos, endPos + pad.length) == pad) endPos += pad.length;\n          didSomething = true;\n          self.replaceRange(\"\", Pos(i, pos), Pos(i, endPos));\n        }\n      });\n      if (didSomething) return true;\n    }\n\n    // Try block comments\n    var startString = options.blockCommentStart || mode.blockCommentStart;\n    var endString = options.blockCommentEnd || mode.blockCommentEnd;\n    if (!startString || !endString) return false;\n    var lead = options.blockCommentLead || mode.blockCommentLead;\n    var startLine = self.getLine(start), open = startLine.indexOf(startString)\n    if (open == -1) return false\n    var endLine = end == start ? startLine : self.getLine(end)\n    var close = endLine.indexOf(endString, end == start ? open + startString.length : 0);\n    var insideStart = Pos(start, open + 1), insideEnd = Pos(end, close + 1)\n    if (close == -1 ||\n        !/comment/.test(self.getTokenTypeAt(insideStart)) ||\n        !/comment/.test(self.getTokenTypeAt(insideEnd)) ||\n        self.getRange(insideStart, insideEnd, \"\\n\").indexOf(endString) > -1)\n      return false;\n\n    // Avoid killing block comments completely outside the selection.\n    // Positions of the last startString before the start of the selection, and the first endString after it.\n    var lastStart = startLine.lastIndexOf(startString, from.ch);\n    var firstEnd = lastStart == -1 ? -1 : startLine.slice(0, from.ch).indexOf(endString, lastStart + startString.length);\n    if (lastStart != -1 && firstEnd != -1 && firstEnd + endString.length != from.ch) return false;\n    // Positions of the first endString after the end of the selection, and the last startString before it.\n    firstEnd = endLine.indexOf(endString, to.ch);\n    var almostLastStart = endLine.slice(to.ch).lastIndexOf(startString, firstEnd - to.ch);\n    lastStart = (firstEnd == -1 || almostLastStart == -1) ? -1 : to.ch + almostLastStart;\n    if (firstEnd != -1 && lastStart != -1 && lastStart != to.ch) return false;\n\n    self.operation(function() {\n      self.replaceRange(\"\", Pos(end, close - (pad && endLine.slice(close - pad.length, close) == pad ? pad.length : 0)),\n                        Pos(end, close + endString.length));\n      var openEnd = open + startString.length;\n      if (pad && startLine.slice(openEnd, openEnd + pad.length) == pad) openEnd += pad.length;\n      self.replaceRange(\"\", Pos(start, open), Pos(start, openEnd));\n      if (lead) for (var i = start + 1; i <= end; ++i) {\n        var line = self.getLine(i), found = line.indexOf(lead);\n        if (found == -1 || nonWS.test(line.slice(0, found))) continue;\n        var foundEnd = found + lead.length;\n        if (pad && line.slice(foundEnd, foundEnd + pad.length) == pad) foundEnd += pad.length;\n        self.replaceRange(\"\", Pos(i, found), Pos(i, foundEnd));\n      }\n    });\n    return true;\n  });\n});\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n// Open simple dialogs on top of an editor. Relies on dialog.css.\n\n(function(mod) {\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n    mod(require(\"../../lib/codemirror\"));\n  else if (typeof define == \"function\" && define.amd) // AMD\n    define([\"../../lib/codemirror\"], mod);\n  else // Plain browser env\n    mod(CodeMirror);\n})(function(CodeMirror) {\n  function dialogDiv(cm, template, bottom) {\n    var wrap = cm.getWrapperElement();\n    var dialog;\n    dialog = wrap.appendChild(document.createElement(\"div\"));\n    if (bottom)\n      dialog.className = \"CodeMirror-dialog CodeMirror-dialog-bottom\";\n    else\n      dialog.className = \"CodeMirror-dialog CodeMirror-dialog-top\";\n\n    if (typeof template == \"string\") {\n      dialog.innerHTML = template;\n    } else { // Assuming it's a detached DOM element.\n      dialog.appendChild(template);\n    }\n    CodeMirror.addClass(wrap, 'dialog-opened');\n    return dialog;\n  }\n\n  function closeNotification(cm, newVal) {\n    if (cm.state.currentNotificationClose)\n      cm.state.currentNotificationClose();\n    cm.state.currentNotificationClose = newVal;\n  }\n\n  CodeMirror.defineExtension(\"openDialog\", function(template, callback, options) {\n    if (!options) options = {};\n\n    closeNotification(this, null);\n\n    var dialog = dialogDiv(this, template, options.bottom);\n    var closed = false, me = this;\n    function close(newVal) {\n      if (typeof newVal == 'string') {\n        inp.value = newVal;\n      } else {\n        if (closed) return;\n        closed = true;\n        CodeMirror.rmClass(dialog.parentNode, 'dialog-opened');\n        dialog.parentNode.removeChild(dialog);\n        me.focus();\n\n        if (options.onClose) options.onClose(dialog);\n      }\n    }\n\n    var inp = dialog.getElementsByTagName(\"input\")[0], button;\n    if (inp) {\n      inp.focus();\n\n      if (options.value) {\n        inp.value = options.value;\n        if (options.selectValueOnOpen !== false) {\n          inp.select();\n        }\n      }\n\n      if (options.onInput)\n        CodeMirror.on(inp, \"input\", function(e) { options.onInput(e, inp.value, close);});\n      if (options.onKeyUp)\n        CodeMirror.on(inp, \"keyup\", function(e) {options.onKeyUp(e, inp.value, close);});\n\n      CodeMirror.on(inp, \"keydown\", function(e) {\n        if (options && options.onKeyDown && options.onKeyDown(e, inp.value, close)) { return; }\n        if (e.keyCode == 27 || (options.closeOnEnter !== false && e.keyCode == 13)) {\n          inp.blur();\n          CodeMirror.e_stop(e);\n          close();\n        }\n        if (e.keyCode == 13) callback(inp.value, e);\n      });\n\n      if (options.closeOnBlur !== false) CodeMirror.on(dialog, \"focusout\", function (evt) {\n        if (evt.relatedTarget !== null) close();\n      });\n    } else if (button = dialog.getElementsByTagName(\"button\")[0]) {\n      CodeMirror.on(button, \"click\", function() {\n        close();\n        me.focus();\n      });\n\n      if (options.closeOnBlur !== false) CodeMirror.on(button, \"blur\", close);\n\n      button.focus();\n    }\n    return close;\n  });\n\n  CodeMirror.defineExtension(\"openConfirm\", function(template, callbacks, options) {\n    closeNotification(this, null);\n    var dialog = dialogDiv(this, template, options && options.bottom);\n    var buttons = dialog.getElementsByTagName(\"button\");\n    var closed = false, me = this, blurring = 1;\n    function close() {\n      if (closed) return;\n      closed = true;\n      CodeMirror.rmClass(dialog.parentNode, 'dialog-opened');\n      dialog.parentNode.removeChild(dialog);\n      me.focus();\n    }\n    buttons[0].focus();\n    for (var i = 0; i < buttons.length; ++i) {\n      var b = buttons[i];\n      (function(callback) {\n        CodeMirror.on(b, \"click\", function(e) {\n          CodeMirror.e_preventDefault(e);\n          close();\n          if (callback) callback(me);\n        });\n      })(callbacks[i]);\n      CodeMirror.on(b, \"blur\", function() {\n        --blurring;\n        setTimeout(function() { if (blurring <= 0) close(); }, 200);\n      });\n      CodeMirror.on(b, \"focus\", function() { ++blurring; });\n    }\n  });\n\n  /*\n   * openNotification\n   * Opens a notification, that can be closed with an optional timer\n   * (default 5000ms timer) and always closes on click.\n   *\n   * If a notification is opened while another is opened, it will close the\n   * currently opened one and open the new one immediately.\n   */\n  CodeMirror.defineExtension(\"openNotification\", function(template, options) {\n    closeNotification(this, close);\n    var dialog = dialogDiv(this, template, options && options.bottom);\n    var closed = false, doneTimer;\n    var duration = options && typeof options.duration !== \"undefined\" ? options.duration : 5000;\n\n    function close() {\n      if (closed) return;\n      closed = true;\n      clearTimeout(doneTimer);\n      CodeMirror.rmClass(dialog.parentNode, 'dialog-opened');\n      dialog.parentNode.removeChild(dialog);\n    }\n\n    CodeMirror.on(dialog, 'click', function(e) {\n      CodeMirror.e_preventDefault(e);\n      close();\n    });\n\n    if (duration)\n      doneTimer = setTimeout(close, duration);\n\n    return close;\n  });\n});\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n(function(mod) {\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n    mod(require(\"../../lib/codemirror\"));\n  else if (typeof define == \"function\" && define.amd) // AMD\n    define([\"../../lib/codemirror\"], mod);\n  else // Plain browser env\n    mod(CodeMirror);\n})(function(CodeMirror) {\n  var defaults = {\n    pairs: \"()[]{}''\\\"\\\"\",\n    closeBefore: \")]}'\\\":;>\",\n    triples: \"\",\n    explode: \"[]{}\"\n  };\n\n  var Pos = CodeMirror.Pos;\n\n  CodeMirror.defineOption(\"autoCloseBrackets\", false, function(cm, val, old) {\n    if (old && old != CodeMirror.Init) {\n      cm.removeKeyMap(keyMap);\n      cm.state.closeBrackets = null;\n    }\n    if (val) {\n      ensureBound(getOption(val, \"pairs\"))\n      cm.state.closeBrackets = val;\n      cm.addKeyMap(keyMap);\n    }\n  });\n\n  function getOption(conf, name) {\n    if (name == \"pairs\" && typeof conf == \"string\") return conf;\n    if (typeof conf == \"object\" && conf[name] != null) return conf[name];\n    return defaults[name];\n  }\n\n  var keyMap = {Backspace: handleBackspace, Enter: handleEnter};\n  function ensureBound(chars) {\n    for (var i = 0; i < chars.length; i++) {\n      var ch = chars.charAt(i), key = \"'\" + ch + \"'\"\n      if (!keyMap[key]) keyMap[key] = handler(ch)\n    }\n  }\n  ensureBound(defaults.pairs + \"`\")\n\n  function handler(ch) {\n    return function(cm) { return handleChar(cm, ch); };\n  }\n\n  function getConfig(cm) {\n    var deflt = cm.state.closeBrackets;\n    if (!deflt || deflt.override) return deflt;\n    var mode = cm.getModeAt(cm.getCursor());\n    return mode.closeBrackets || deflt;\n  }\n\n  function handleBackspace(cm) {\n    var conf = getConfig(cm);\n    if (!conf || cm.getOption(\"disableInput\")) return CodeMirror.Pass;\n\n    var pairs = getOption(conf, \"pairs\");\n    var ranges = cm.listSelections();\n    for (var i = 0; i < ranges.length; i++) {\n      if (!ranges[i].empty()) return CodeMirror.Pass;\n      var around = charsAround(cm, ranges[i].head);\n      if (!around || pairs.indexOf(around) % 2 != 0) return CodeMirror.Pass;\n    }\n    for (var i = ranges.length - 1; i >= 0; i--) {\n      var cur = ranges[i].head;\n      cm.replaceRange(\"\", Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1), \"+delete\");\n    }\n  }\n\n  function handleEnter(cm) {\n    var conf = getConfig(cm);\n    var explode = conf && getOption(conf, \"explode\");\n    if (!explode || cm.getOption(\"disableInput\")) return CodeMirror.Pass;\n\n    var ranges = cm.listSelections();\n    for (var i = 0; i < ranges.length; i++) {\n      if (!ranges[i].empty()) return CodeMirror.Pass;\n      var around = charsAround(cm, ranges[i].head);\n      if (!around || explode.indexOf(around) % 2 != 0) return CodeMirror.Pass;\n    }\n    cm.operation(function() {\n      var linesep = cm.lineSeparator() || \"\\n\";\n      cm.replaceSelection(linesep + linesep, null);\n      moveSel(cm, -1)\n      ranges = cm.listSelections();\n      for (var i = 0; i < ranges.length; i++) {\n        var line = ranges[i].head.line;\n        cm.indentLine(line, null, true);\n        cm.indentLine(line + 1, null, true);\n      }\n    });\n  }\n\n  function moveSel(cm, dir) {\n    var newRanges = [], ranges = cm.listSelections(), primary = 0\n    for (var i = 0; i < ranges.length; i++) {\n      var range = ranges[i]\n      if (range.head == cm.getCursor()) primary = i\n      var pos = range.head.ch || dir > 0 ? {line: range.head.line, ch: range.head.ch + dir} : {line: range.head.line - 1}\n      newRanges.push({anchor: pos, head: pos})\n    }\n    cm.setSelections(newRanges, primary)\n  }\n\n  function contractSelection(sel) {\n    var inverted = CodeMirror.cmpPos(sel.anchor, sel.head) > 0;\n    return {anchor: new Pos(sel.anchor.line, sel.anchor.ch + (inverted ? -1 : 1)),\n            head: new Pos(sel.head.line, sel.head.ch + (inverted ? 1 : -1))};\n  }\n\n  function handleChar(cm, ch) {\n    var conf = getConfig(cm);\n    if (!conf || cm.getOption(\"disableInput\")) return CodeMirror.Pass;\n\n    var pairs = getOption(conf, \"pairs\");\n    var pos = pairs.indexOf(ch);\n    if (pos == -1) return CodeMirror.Pass;\n\n    var closeBefore = getOption(conf,\"closeBefore\");\n\n    var triples = getOption(conf, \"triples\");\n\n    var identical = pairs.charAt(pos + 1) == ch;\n    var ranges = cm.listSelections();\n    var opening = pos % 2 == 0;\n\n    var type;\n    for (var i = 0; i < ranges.length; i++) {\n      var range = ranges[i], cur = range.head, curType;\n      var next = cm.getRange(cur, Pos(cur.line, cur.ch + 1));\n      if (opening && !range.empty()) {\n        curType = \"surround\";\n      } else if ((identical || !opening) && next == ch) {\n        if (identical && stringStartsAfter(cm, cur))\n          curType = \"both\";\n        else if (triples.indexOf(ch) >= 0 && cm.getRange(cur, Pos(cur.line, cur.ch + 3)) == ch + ch + ch)\n          curType = \"skipThree\";\n        else\n          curType = \"skip\";\n      } else if (identical && cur.ch > 1 && triples.indexOf(ch) >= 0 &&\n                 cm.getRange(Pos(cur.line, cur.ch - 2), cur) == ch + ch) {\n        if (cur.ch > 2 && /\\bstring/.test(cm.getTokenTypeAt(Pos(cur.line, cur.ch - 2)))) return CodeMirror.Pass;\n        curType = \"addFour\";\n      } else if (identical) {\n        var prev = cur.ch == 0 ? \" \" : cm.getRange(Pos(cur.line, cur.ch - 1), cur)\n        if (!CodeMirror.isWordChar(next) && prev != ch && !CodeMirror.isWordChar(prev)) curType = \"both\";\n        else return CodeMirror.Pass;\n      } else if (opening && (next.length === 0 || /\\s/.test(next) || closeBefore.indexOf(next) > -1)) {\n        curType = \"both\";\n      } else {\n        return CodeMirror.Pass;\n      }\n      if (!type) type = curType;\n      else if (type != curType) return CodeMirror.Pass;\n    }\n\n    var left = pos % 2 ? pairs.charAt(pos - 1) : ch;\n    var right = pos % 2 ? ch : pairs.charAt(pos + 1);\n    cm.operation(function() {\n      if (type == \"skip\") {\n        moveSel(cm, 1)\n      } else if (type == \"skipThree\") {\n        moveSel(cm, 3)\n      } else if (type == \"surround\") {\n        var sels = cm.getSelections();\n        for (var i = 0; i < sels.length; i++)\n          sels[i] = left + sels[i] + right;\n        cm.replaceSelections(sels, \"around\");\n        sels = cm.listSelections().slice();\n        for (var i = 0; i < sels.length; i++)\n          sels[i] = contractSelection(sels[i]);\n        cm.setSelections(sels);\n      } else if (type == \"both\") {\n        cm.replaceSelection(left + right, null);\n        cm.triggerElectric(left + right);\n        moveSel(cm, -1)\n      } else if (type == \"addFour\") {\n        cm.replaceSelection(left + left + left + left, \"before\");\n        moveSel(cm, 1)\n      }\n    });\n  }\n\n  function charsAround(cm, pos) {\n    var str = cm.getRange(Pos(pos.line, pos.ch - 1),\n                          Pos(pos.line, pos.ch + 1));\n    return str.length == 2 ? str : null;\n  }\n\n  function stringStartsAfter(cm, pos) {\n    var token = cm.getTokenAt(Pos(pos.line, pos.ch + 1))\n    return /\\bstring/.test(token.type) && token.start == pos.ch &&\n      (pos.ch == 0 || !/\\bstring/.test(cm.getTokenTypeAt(pos)))\n  }\n});\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n(function(mod) {\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n    mod(require(\"../../lib/codemirror\"));\n  else if (typeof define == \"function\" && define.amd) // AMD\n    define([\"../../lib/codemirror\"], mod);\n  else // Plain browser env\n    mod(CodeMirror);\n})(function(CodeMirror) {\n  var ie_lt8 = /MSIE \\d/.test(navigator.userAgent) &&\n    (document.documentMode == null || document.documentMode < 8);\n\n  var Pos = CodeMirror.Pos;\n\n  var matching = {\"(\": \")>\", \")\": \"(<\", \"[\": \"]>\", \"]\": \"[<\", \"{\": \"}>\", \"}\": \"{<\", \"<\": \">>\", \">\": \"<<\"};\n\n  function bracketRegex(config) {\n    return config && config.bracketRegex || /[(){}[\\]]/\n  }\n\n  function findMatchingBracket(cm, where, config) {\n    var line = cm.getLineHandle(where.line), pos = where.ch - 1;\n    var afterCursor = config && config.afterCursor\n    if (afterCursor == null)\n      afterCursor = /(^| )cm-fat-cursor($| )/.test(cm.getWrapperElement().className)\n    var re = bracketRegex(config)\n\n    // A cursor is defined as between two characters, but in in vim command mode\n    // (i.e. not insert mode), the cursor is visually represented as a\n    // highlighted box on top of the 2nd character. Otherwise, we allow matches\n    // from before or after the cursor.\n    var match = (!afterCursor && pos >= 0 && re.test(line.text.charAt(pos)) && matching[line.text.charAt(pos)]) ||\n        re.test(line.text.charAt(pos + 1)) && matching[line.text.charAt(++pos)];\n    if (!match) return null;\n    var dir = match.charAt(1) == \">\" ? 1 : -1;\n    if (config && config.strict && (dir > 0) != (pos == where.ch)) return null;\n    var style = cm.getTokenTypeAt(Pos(where.line, pos + 1));\n\n    var found = scanForBracket(cm, Pos(where.line, pos + (dir > 0 ? 1 : 0)), dir, style, config);\n    if (found == null) return null;\n    return {from: Pos(where.line, pos), to: found && found.pos,\n            match: found && found.ch == match.charAt(0), forward: dir > 0};\n  }\n\n  // bracketRegex is used to specify which type of bracket to scan\n  // should be a regexp, e.g. /[[\\]]/\n  //\n  // Note: If \"where\" is on an open bracket, then this bracket is ignored.\n  //\n  // Returns false when no bracket was found, null when it reached\n  // maxScanLines and gave up\n  function scanForBracket(cm, where, dir, style, config) {\n    var maxScanLen = (config && config.maxScanLineLength) || 10000;\n    var maxScanLines = (config && config.maxScanLines) || 1000;\n\n    var stack = [];\n    var re = bracketRegex(config)\n    var lineEnd = dir > 0 ? Math.min(where.line + maxScanLines, cm.lastLine() + 1)\n                          : Math.max(cm.firstLine() - 1, where.line - maxScanLines);\n    for (var lineNo = where.line; lineNo != lineEnd; lineNo += dir) {\n      var line = cm.getLine(lineNo);\n      if (!line) continue;\n      var pos = dir > 0 ? 0 : line.length - 1, end = dir > 0 ? line.length : -1;\n      if (line.length > maxScanLen) continue;\n      if (lineNo == where.line) pos = where.ch - (dir < 0 ? 1 : 0);\n      for (; pos != end; pos += dir) {\n        var ch = line.charAt(pos);\n        if (re.test(ch) && (style === undefined ||\n                            (cm.getTokenTypeAt(Pos(lineNo, pos + 1)) || \"\") == (style || \"\"))) {\n          var match = matching[ch];\n          if (match && (match.charAt(1) == \">\") == (dir > 0)) stack.push(ch);\n          else if (!stack.length) return {pos: Pos(lineNo, pos), ch: ch};\n          else stack.pop();\n        }\n      }\n    }\n    return lineNo - dir == (dir > 0 ? cm.lastLine() : cm.firstLine()) ? false : null;\n  }\n\n  function matchBrackets(cm, autoclear, config) {\n    // Disable brace matching in long lines, since it'll cause hugely slow updates\n    var maxHighlightLen = cm.state.matchBrackets.maxHighlightLineLength || 1000,\n      highlightNonMatching = config && config.highlightNonMatching;\n    var marks = [], ranges = cm.listSelections();\n    for (var i = 0; i < ranges.length; i++) {\n      var match = ranges[i].empty() && findMatchingBracket(cm, ranges[i].head, config);\n      if (match && (match.match || highlightNonMatching !== false) && cm.getLine(match.from.line).length <= maxHighlightLen) {\n        var style = match.match ? \"CodeMirror-matchingbracket\" : \"CodeMirror-nonmatchingbracket\";\n        marks.push(cm.markText(match.from, Pos(match.from.line, match.from.ch + 1), {className: style}));\n        if (match.to && cm.getLine(match.to.line).length <= maxHighlightLen)\n          marks.push(cm.markText(match.to, Pos(match.to.line, match.to.ch + 1), {className: style}));\n      }\n    }\n\n    if (marks.length) {\n      // Kludge to work around the IE bug from issue #1193, where text\n      // input stops going to the textarea whenever this fires.\n      if (ie_lt8 && cm.state.focused) cm.focus();\n\n      var clear = function() {\n        cm.operation(function() {\n          for (var i = 0; i < marks.length; i++) marks[i].clear();\n        });\n      };\n      if (autoclear) setTimeout(clear, 800);\n      else return clear;\n    }\n  }\n\n  function doMatchBrackets(cm) {\n    cm.operation(function() {\n      if (cm.state.matchBrackets.currentlyHighlighted) {\n        cm.state.matchBrackets.currentlyHighlighted();\n        cm.state.matchBrackets.currentlyHighlighted = null;\n      }\n      cm.state.matchBrackets.currentlyHighlighted = matchBrackets(cm, false, cm.state.matchBrackets);\n    });\n  }\n\n  function clearHighlighted(cm) {\n    if (cm.state.matchBrackets && cm.state.matchBrackets.currentlyHighlighted) {\n      cm.state.matchBrackets.currentlyHighlighted();\n      cm.state.matchBrackets.currentlyHighlighted = null;\n    }\n  }\n\n  CodeMirror.defineOption(\"matchBrackets\", false, function(cm, val, old) {\n    if (old && old != CodeMirror.Init) {\n      cm.off(\"cursorActivity\", doMatchBrackets);\n      cm.off(\"focus\", doMatchBrackets)\n      cm.off(\"blur\", clearHighlighted)\n      clearHighlighted(cm);\n    }\n    if (val) {\n      cm.state.matchBrackets = typeof val == \"object\" ? val : {};\n      cm.on(\"cursorActivity\", doMatchBrackets);\n      cm.on(\"focus\", doMatchBrackets)\n      cm.on(\"blur\", clearHighlighted)\n    }\n  });\n\n  CodeMirror.defineExtension(\"matchBrackets\", function() {matchBrackets(this, true);});\n  CodeMirror.defineExtension(\"findMatchingBracket\", function(pos, config, oldConfig){\n    // Backwards-compatibility kludge\n    if (oldConfig || typeof config == \"boolean\") {\n      if (!oldConfig) {\n        config = config ? {strict: true} : null\n      } else {\n        oldConfig.strict = config\n        config = oldConfig\n      }\n    }\n    return findMatchingBracket(this, pos, config)\n  });\n  CodeMirror.defineExtension(\"scanForBracket\", function(pos, dir, style, config){\n    return scanForBracket(this, pos, dir, style, config);\n  });\n});\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n(function(mod) {\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n    mod(require(\"../../lib/codemirror\"));\n  else if (typeof define == \"function\" && define.amd) // AMD\n    define([\"../../lib/codemirror\"], mod);\n  else // Plain browser env\n    mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nfunction bracketFolding(pairs) {\n  return function(cm, start) {\n    var line = start.line, lineText = cm.getLine(line);\n\n    function findOpening(pair) {\n      var tokenType;\n      for (var at = start.ch, pass = 0;;) {\n        var found = at <= 0 ? -1 : lineText.lastIndexOf(pair[0], at - 1);\n        if (found == -1) {\n          if (pass == 1) break;\n          pass = 1;\n          at = lineText.length;\n          continue;\n        }\n        if (pass == 1 && found < start.ch) break;\n        tokenType = cm.getTokenTypeAt(CodeMirror.Pos(line, found + 1));\n        if (!/^(comment|string)/.test(tokenType)) return {ch: found + 1, tokenType: tokenType, pair: pair};\n        at = found - 1;\n      }\n    }\n\n    function findRange(found) {\n      var count = 1, lastLine = cm.lastLine(), end, startCh = found.ch, endCh\n      outer: for (var i = line; i <= lastLine; ++i) {\n        var text = cm.getLine(i), pos = i == line ? startCh : 0;\n        for (;;) {\n          var nextOpen = text.indexOf(found.pair[0], pos), nextClose = text.indexOf(found.pair[1], pos);\n          if (nextOpen < 0) nextOpen = text.length;\n          if (nextClose < 0) nextClose = text.length;\n          pos = Math.min(nextOpen, nextClose);\n          if (pos == text.length) break;\n          if (cm.getTokenTypeAt(CodeMirror.Pos(i, pos + 1)) == found.tokenType) {\n            if (pos == nextOpen) ++count;\n            else if (!--count) { end = i; endCh = pos; break outer; }\n          }\n          ++pos;\n        }\n      }\n\n      if (end == null || line == end) return null\n      return {from: CodeMirror.Pos(line, startCh),\n              to: CodeMirror.Pos(end, endCh)};\n    }\n\n    var found = []\n    for (var i = 0; i < pairs.length; i++) {\n      var open = findOpening(pairs[i])\n      if (open) found.push(open)\n    }\n    found.sort(function(a, b) { return a.ch - b.ch })\n    for (var i = 0; i < found.length; i++) {\n      var range = findRange(found[i])\n      if (range) return range\n    }\n    return null\n  }\n}\n\nCodeMirror.registerHelper(\"fold\", \"brace\", bracketFolding([[\"{\", \"}\"], [\"[\", \"]\"]]));\n\nCodeMirror.registerHelper(\"fold\", \"brace-paren\", bracketFolding([[\"{\", \"}\"], [\"[\", \"]\"], [\"(\", \")\"]]));\n\nCodeMirror.registerHelper(\"fold\", \"import\", function(cm, start) {\n  function hasImport(line) {\n    if (line < cm.firstLine() || line > cm.lastLine()) return null;\n    var start = cm.getTokenAt(CodeMirror.Pos(line, 1));\n    if (!/\\S/.test(start.string)) start = cm.getTokenAt(CodeMirror.Pos(line, start.end + 1));\n    if (start.type != \"keyword\" || start.string != \"import\") return null;\n    // Now find closing semicolon, return its position\n    for (var i = line, e = Math.min(cm.lastLine(), line + 10); i <= e; ++i) {\n      var text = cm.getLine(i), semi = text.indexOf(\";\");\n      if (semi != -1) return {startCh: start.end, end: CodeMirror.Pos(i, semi)};\n    }\n  }\n\n  var startLine = start.line, has = hasImport(startLine), prev;\n  if (!has || hasImport(startLine - 1) || ((prev = hasImport(startLine - 2)) && prev.end.line == startLine - 1))\n    return null;\n  for (var end = has.end;;) {\n    var next = hasImport(end.line + 1);\n    if (next == null) break;\n    end = next.end;\n  }\n  return {from: cm.clipPos(CodeMirror.Pos(startLine, has.startCh + 1)), to: end};\n});\n\nCodeMirror.registerHelper(\"fold\", \"include\", function(cm, start) {\n  function hasInclude(line) {\n    if (line < cm.firstLine() || line > cm.lastLine()) return null;\n    var start = cm.getTokenAt(CodeMirror.Pos(line, 1));\n    if (!/\\S/.test(start.string)) start = cm.getTokenAt(CodeMirror.Pos(line, start.end + 1));\n    if (start.type == \"meta\" && start.string.slice(0, 8) == \"#include\") return start.start + 8;\n  }\n\n  var startLine = start.line, has = hasInclude(startLine);\n  if (has == null || hasInclude(startLine - 1) != null) return null;\n  for (var end = startLine;;) {\n    var next = hasInclude(end + 1);\n    if (next == null) break;\n    ++end;\n  }\n  return {from: CodeMirror.Pos(startLine, has + 1),\n          to: cm.clipPos(CodeMirror.Pos(end))};\n});\n\n});\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n(function(mod) {\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n    mod(require(\"../../lib/codemirror\"));\n  else if (typeof define == \"function\" && define.amd) // AMD\n    define([\"../../lib/codemirror\"], mod);\n  else // Plain browser env\n    mod(CodeMirror);\n})(function(CodeMirror) {\n  \"use strict\";\n\n  function doFold(cm, pos, options, force) {\n    if (options && options.call) {\n      var finder = options;\n      options = null;\n    } else {\n      var finder = getOption(cm, options, \"rangeFinder\");\n    }\n    if (typeof pos == \"number\") pos = CodeMirror.Pos(pos, 0);\n    var minSize = getOption(cm, options, \"minFoldSize\");\n\n    function getRange(allowFolded) {\n      var range = finder(cm, pos);\n      if (!range || range.to.line - range.from.line < minSize) return null;\n      if (force === \"fold\") return range;\n\n      var marks = cm.findMarksAt(range.from);\n      for (var i = 0; i < marks.length; ++i) {\n        if (marks[i].__isFold) {\n          if (!allowFolded) return null;\n          range.cleared = true;\n          marks[i].clear();\n        }\n      }\n      return range;\n    }\n\n    var range = getRange(true);\n    if (getOption(cm, options, \"scanUp\")) while (!range && pos.line > cm.firstLine()) {\n      pos = CodeMirror.Pos(pos.line - 1, 0);\n      range = getRange(false);\n    }\n    if (!range || range.cleared || force === \"unfold\") return;\n\n    var myWidget = makeWidget(cm, options, range);\n    CodeMirror.on(myWidget, \"mousedown\", function(e) {\n      myRange.clear();\n      CodeMirror.e_preventDefault(e);\n    });\n    var myRange = cm.markText(range.from, range.to, {\n      replacedWith: myWidget,\n      clearOnEnter: getOption(cm, options, \"clearOnEnter\"),\n      __isFold: true\n    });\n    myRange.on(\"clear\", function(from, to) {\n      CodeMirror.signal(cm, \"unfold\", cm, from, to);\n    });\n    CodeMirror.signal(cm, \"fold\", cm, range.from, range.to);\n  }\n\n  function makeWidget(cm, options, range) {\n    var widget = getOption(cm, options, \"widget\");\n\n    if (typeof widget == \"function\") {\n      widget = widget(range.from, range.to);\n    }\n\n    if (typeof widget == \"string\") {\n      var text = document.createTextNode(widget);\n      widget = document.createElement(\"span\");\n      widget.appendChild(text);\n      widget.className = \"CodeMirror-foldmarker\";\n    } else if (widget) {\n      widget = widget.cloneNode(true)\n    }\n    return widget;\n  }\n\n  // Clumsy backwards-compatible interface\n  CodeMirror.newFoldFunction = function(rangeFinder, widget) {\n    return function(cm, pos) { doFold(cm, pos, {rangeFinder: rangeFinder, widget: widget}); };\n  };\n\n  // New-style interface\n  CodeMirror.defineExtension(\"foldCode\", function(pos, options, force) {\n    doFold(this, pos, options, force);\n  });\n\n  CodeMirror.defineExtension(\"isFolded\", function(pos) {\n    var marks = this.findMarksAt(pos);\n    for (var i = 0; i < marks.length; ++i)\n      if (marks[i].__isFold) return true;\n  });\n\n  CodeMirror.commands.toggleFold = function(cm) {\n    cm.foldCode(cm.getCursor());\n  };\n  CodeMirror.commands.fold = function(cm) {\n    cm.foldCode(cm.getCursor(), null, \"fold\");\n  };\n  CodeMirror.commands.unfold = function(cm) {\n    cm.foldCode(cm.getCursor(), { scanUp: false }, \"unfold\");\n  };\n  CodeMirror.commands.foldAll = function(cm) {\n    cm.operation(function() {\n      for (var i = cm.firstLine(), e = cm.lastLine(); i <= e; i++)\n        cm.foldCode(CodeMirror.Pos(i, 0), { scanUp: false }, \"fold\");\n    });\n  };\n  CodeMirror.commands.unfoldAll = function(cm) {\n    cm.operation(function() {\n      for (var i = cm.firstLine(), e = cm.lastLine(); i <= e; i++)\n        cm.foldCode(CodeMirror.Pos(i, 0), { scanUp: false }, \"unfold\");\n    });\n  };\n\n  CodeMirror.registerHelper(\"fold\", \"combine\", function() {\n    var funcs = Array.prototype.slice.call(arguments, 0);\n    return function(cm, start) {\n      for (var i = 0; i < funcs.length; ++i) {\n        var found = funcs[i](cm, start);\n        if (found) return found;\n      }\n    };\n  });\n\n  CodeMirror.registerHelper(\"fold\", \"auto\", function(cm, start) {\n    var helpers = cm.getHelpers(start, \"fold\");\n    for (var i = 0; i < helpers.length; i++) {\n      var cur = helpers[i](cm, start);\n      if (cur) return cur;\n    }\n  });\n\n  var defaultOptions = {\n    rangeFinder: CodeMirror.fold.auto,\n    widget: \"\\u2194\",\n    minFoldSize: 0,\n    scanUp: false,\n    clearOnEnter: true\n  };\n\n  CodeMirror.defineOption(\"foldOptions\", null);\n\n  function getOption(cm, options, name) {\n    if (options && options[name] !== undefined)\n      return options[name];\n    var editorOptions = cm.options.foldOptions;\n    if (editorOptions && editorOptions[name] !== undefined)\n      return editorOptions[name];\n    return defaultOptions[name];\n  }\n\n  CodeMirror.defineExtension(\"foldOption\", function(options, name) {\n    return getOption(this, options, name);\n  });\n});\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n(function(mod) {\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n    mod(require(\"../../lib/codemirror\"), require(\"./foldcode\"));\n  else if (typeof define == \"function\" && define.amd) // AMD\n    define([\"../../lib/codemirror\", \"./foldcode\"], mod);\n  else // Plain browser env\n    mod(CodeMirror);\n})(function(CodeMirror) {\n  \"use strict\";\n\n  CodeMirror.defineOption(\"foldGutter\", false, function(cm, val, old) {\n    if (old && old != CodeMirror.Init) {\n      cm.clearGutter(cm.state.foldGutter.options.gutter);\n      cm.state.foldGutter = null;\n      cm.off(\"gutterClick\", onGutterClick);\n      cm.off(\"changes\", onChange);\n      cm.off(\"viewportChange\", onViewportChange);\n      cm.off(\"fold\", onFold);\n      cm.off(\"unfold\", onFold);\n      cm.off(\"swapDoc\", onChange);\n    }\n    if (val) {\n      cm.state.foldGutter = new State(parseOptions(val));\n      updateInViewport(cm);\n      cm.on(\"gutterClick\", onGutterClick);\n      cm.on(\"changes\", onChange);\n      cm.on(\"viewportChange\", onViewportChange);\n      cm.on(\"fold\", onFold);\n      cm.on(\"unfold\", onFold);\n      cm.on(\"swapDoc\", onChange);\n    }\n  });\n\n  var Pos = CodeMirror.Pos;\n\n  function State(options) {\n    this.options = options;\n    this.from = this.to = 0;\n  }\n\n  function parseOptions(opts) {\n    if (opts === true) opts = {};\n    if (opts.gutter == null) opts.gutter = \"CodeMirror-foldgutter\";\n    if (opts.indicatorOpen == null) opts.indicatorOpen = \"CodeMirror-foldgutter-open\";\n    if (opts.indicatorFolded == null) opts.indicatorFolded = \"CodeMirror-foldgutter-folded\";\n    return opts;\n  }\n\n  function isFolded(cm, line) {\n    var marks = cm.findMarks(Pos(line, 0), Pos(line + 1, 0));\n    for (var i = 0; i < marks.length; ++i) {\n      if (marks[i].__isFold) {\n        var fromPos = marks[i].find(-1);\n        if (fromPos && fromPos.line === line)\n          return marks[i];\n      }\n    }\n  }\n\n  function marker(spec) {\n    if (typeof spec == \"string\") {\n      var elt = document.createElement(\"div\");\n      elt.className = spec + \" CodeMirror-guttermarker-subtle\";\n      return elt;\n    } else {\n      return spec.cloneNode(true);\n    }\n  }\n\n  function updateFoldInfo(cm, from, to) {\n    var opts = cm.state.foldGutter.options, cur = from - 1;\n    var minSize = cm.foldOption(opts, \"minFoldSize\");\n    var func = cm.foldOption(opts, \"rangeFinder\");\n    // we can reuse the built-in indicator element if its className matches the new state\n    var clsFolded = typeof opts.indicatorFolded == \"string\" && classTest(opts.indicatorFolded);\n    var clsOpen = typeof opts.indicatorOpen == \"string\" && classTest(opts.indicatorOpen);\n    cm.eachLine(from, to, function(line) {\n      ++cur;\n      var mark = null;\n      var old = line.gutterMarkers;\n      if (old) old = old[opts.gutter];\n      if (isFolded(cm, cur)) {\n        if (clsFolded && old && clsFolded.test(old.className)) return;\n        mark = marker(opts.indicatorFolded);\n      } else {\n        var pos = Pos(cur, 0);\n        var range = func && func(cm, pos);\n        if (range && range.to.line - range.from.line >= minSize) {\n          if (clsOpen && old && clsOpen.test(old.className)) return;\n          mark = marker(opts.indicatorOpen);\n        }\n      }\n      if (!mark && !old) return;\n      cm.setGutterMarker(line, opts.gutter, mark);\n    });\n  }\n\n  // copied from CodeMirror/src/util/dom.js\n  function classTest(cls) { return new RegExp(\"(^|\\\\s)\" + cls + \"(?:$|\\\\s)\\\\s*\") }\n\n  function updateInViewport(cm) {\n    var vp = cm.getViewport(), state = cm.state.foldGutter;\n    if (!state) return;\n    cm.operation(function() {\n      updateFoldInfo(cm, vp.from, vp.to);\n    });\n    state.from = vp.from; state.to = vp.to;\n  }\n\n  function onGutterClick(cm, line, gutter) {\n    var state = cm.state.foldGutter;\n    if (!state) return;\n    var opts = state.options;\n    if (gutter != opts.gutter) return;\n    var folded = isFolded(cm, line);\n    if (folded) folded.clear();\n    else cm.foldCode(Pos(line, 0), opts);\n  }\n\n  function onChange(cm) {\n    var state = cm.state.foldGutter;\n    if (!state) return;\n    var opts = state.options;\n    state.from = state.to = 0;\n    clearTimeout(state.changeUpdate);\n    state.changeUpdate = setTimeout(function() { updateInViewport(cm); }, opts.foldOnChangeTimeSpan || 600);\n  }\n\n  function onViewportChange(cm) {\n    var state = cm.state.foldGutter;\n    if (!state) return;\n    var opts = state.options;\n    clearTimeout(state.changeUpdate);\n    state.changeUpdate = setTimeout(function() {\n      var vp = cm.getViewport();\n      if (state.from == state.to || vp.from - state.to > 20 || state.from - vp.to > 20) {\n        updateInViewport(cm);\n      } else {\n        cm.operation(function() {\n          if (vp.from < state.from) {\n            updateFoldInfo(cm, vp.from, state.from);\n            state.from = vp.from;\n          }\n          if (vp.to > state.to) {\n            updateFoldInfo(cm, state.to, vp.to);\n            state.to = vp.to;\n          }\n        });\n      }\n    }, opts.updateViewportTimeSpan || 400);\n  }\n\n  function onFold(cm, from) {\n    var state = cm.state.foldGutter;\n    if (!state) return;\n    var line = from.line;\n    if (line >= state.from && line < state.to)\n      updateFoldInfo(cm, line, line + 1);\n  }\n});\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n// declare global: DOMRect\n\n(function(mod) {\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n    mod(require(\"../../lib/codemirror\"));\n  else if (typeof define == \"function\" && define.amd) // AMD\n    define([\"../../lib/codemirror\"], mod);\n  else // Plain browser env\n    mod(CodeMirror);\n})(function(CodeMirror) {\n  \"use strict\";\n\n  var HINT_ELEMENT_CLASS        = \"CodeMirror-hint\";\n  var ACTIVE_HINT_ELEMENT_CLASS = \"CodeMirror-hint-active\";\n\n  // This is the old interface, kept around for now to stay\n  // backwards-compatible.\n  CodeMirror.showHint = function(cm, getHints, options) {\n    if (!getHints) return cm.showHint(options);\n    if (options && options.async) getHints.async = true;\n    var newOpts = {hint: getHints};\n    if (options) for (var prop in options) newOpts[prop] = options[prop];\n    return cm.showHint(newOpts);\n  };\n\n  CodeMirror.defineExtension(\"showHint\", function(options) {\n    options = parseOptions(this, this.getCursor(\"start\"), options);\n    var selections = this.listSelections()\n    if (selections.length > 1) return;\n    // By default, don't allow completion when something is selected.\n    // A hint function can have a `supportsSelection` property to\n    // indicate that it can handle selections.\n    if (this.somethingSelected()) {\n      if (!options.hint.supportsSelection) return;\n      // Don't try with cross-line selections\n      for (var i = 0; i < selections.length; i++)\n        if (selections[i].head.line != selections[i].anchor.line) return;\n    }\n\n    if (this.state.completionActive) this.state.completionActive.close();\n    var completion = this.state.completionActive = new Completion(this, options);\n    if (!completion.options.hint) return;\n\n    CodeMirror.signal(this, \"startCompletion\", this);\n    completion.update(true);\n  });\n\n  CodeMirror.defineExtension(\"closeHint\", function() {\n    if (this.state.completionActive) this.state.completionActive.close()\n  })\n\n  function Completion(cm, options) {\n    this.cm = cm;\n    this.options = options;\n    this.widget = null;\n    this.debounce = 0;\n    this.tick = 0;\n    this.startPos = this.cm.getCursor(\"start\");\n    this.startLen = this.cm.getLine(this.startPos.line).length - this.cm.getSelection().length;\n\n    if (this.options.updateOnCursorActivity) {\n      var self = this;\n      cm.on(\"cursorActivity\", this.activityFunc = function() { self.cursorActivity(); });\n    }\n  }\n\n  var requestAnimationFrame = window.requestAnimationFrame || function(fn) {\n    return setTimeout(fn, 1000/60);\n  };\n  var cancelAnimationFrame = window.cancelAnimationFrame || clearTimeout;\n\n  Completion.prototype = {\n    close: function() {\n      if (!this.active()) return;\n      this.cm.state.completionActive = null;\n      this.tick = null;\n      if (this.options.updateOnCursorActivity) {\n        this.cm.off(\"cursorActivity\", this.activityFunc);\n      }\n\n      if (this.widget && this.data) CodeMirror.signal(this.data, \"close\");\n      if (this.widget) this.widget.close();\n      CodeMirror.signal(this.cm, \"endCompletion\", this.cm);\n    },\n\n    active: function() {\n      return this.cm.state.completionActive == this;\n    },\n\n    pick: function(data, i) {\n      var completion = data.list[i], self = this;\n      this.cm.operation(function() {\n        if (completion.hint)\n          completion.hint(self.cm, data, completion);\n        else\n          self.cm.replaceRange(getText(completion), completion.from || data.from,\n                               completion.to || data.to, \"complete\");\n        CodeMirror.signal(data, \"pick\", completion);\n        self.cm.scrollIntoView();\n      });\n      if (this.options.closeOnPick) {\n        this.close();\n      }\n    },\n\n    cursorActivity: function() {\n      if (this.debounce) {\n        cancelAnimationFrame(this.debounce);\n        this.debounce = 0;\n      }\n\n      var identStart = this.startPos;\n      if(this.data) {\n        identStart = this.data.from;\n      }\n\n      var pos = this.cm.getCursor(), line = this.cm.getLine(pos.line);\n      if (pos.line != this.startPos.line || line.length - pos.ch != this.startLen - this.startPos.ch ||\n          pos.ch < identStart.ch || this.cm.somethingSelected() ||\n          (!pos.ch || this.options.closeCharacters.test(line.charAt(pos.ch - 1)))) {\n        this.close();\n      } else {\n        var self = this;\n        this.debounce = requestAnimationFrame(function() {self.update();});\n        if (this.widget) this.widget.disable();\n      }\n    },\n\n    update: function(first) {\n      if (this.tick == null) return\n      var self = this, myTick = ++this.tick\n      fetchHints(this.options.hint, this.cm, this.options, function(data) {\n        if (self.tick == myTick) self.finishUpdate(data, first)\n      })\n    },\n\n    finishUpdate: function(data, first) {\n      if (this.data) CodeMirror.signal(this.data, \"update\");\n\n      var picked = (this.widget && this.widget.picked) || (first && this.options.completeSingle);\n      if (this.widget) this.widget.close();\n\n      this.data = data;\n\n      if (data && data.list.length) {\n        if (picked && data.list.length == 1) {\n          this.pick(data, 0);\n        } else {\n          this.widget = new Widget(this, data);\n          CodeMirror.signal(data, \"shown\");\n        }\n      }\n    }\n  };\n\n  function parseOptions(cm, pos, options) {\n    var editor = cm.options.hintOptions;\n    var out = {};\n    for (var prop in defaultOptions) out[prop] = defaultOptions[prop];\n    if (editor) for (var prop in editor)\n      if (editor[prop] !== undefined) out[prop] = editor[prop];\n    if (options) for (var prop in options)\n      if (options[prop] !== undefined) out[prop] = options[prop];\n    if (out.hint.resolve) out.hint = out.hint.resolve(cm, pos)\n    return out;\n  }\n\n  function getText(completion) {\n    if (typeof completion == \"string\") return completion;\n    else return completion.text;\n  }\n\n  function buildKeyMap(completion, handle) {\n    var baseMap = {\n      Up: function() {handle.moveFocus(-1);},\n      Down: function() {handle.moveFocus(1);},\n      PageUp: function() {handle.moveFocus(-handle.menuSize() + 1, true);},\n      PageDown: function() {handle.moveFocus(handle.menuSize() - 1, true);},\n      Home: function() {handle.setFocus(0);},\n      End: function() {handle.setFocus(handle.length - 1);},\n      Enter: handle.pick,\n      Tab: handle.pick,\n      Esc: handle.close\n    };\n\n    var mac = /Mac/.test(navigator.platform);\n\n    if (mac) {\n      baseMap[\"Ctrl-P\"] = function() {handle.moveFocus(-1);};\n      baseMap[\"Ctrl-N\"] = function() {handle.moveFocus(1);};\n    }\n\n    var custom = completion.options.customKeys;\n    var ourMap = custom ? {} : baseMap;\n    function addBinding(key, val) {\n      var bound;\n      if (typeof val != \"string\")\n        bound = function(cm) { return val(cm, handle); };\n      // This mechanism is deprecated\n      else if (baseMap.hasOwnProperty(val))\n        bound = baseMap[val];\n      else\n        bound = val;\n      ourMap[key] = bound;\n    }\n    if (custom)\n      for (var key in custom) if (custom.hasOwnProperty(key))\n        addBinding(key, custom[key]);\n    var extra = completion.options.extraKeys;\n    if (extra)\n      for (var key in extra) if (extra.hasOwnProperty(key))\n        addBinding(key, extra[key]);\n    return ourMap;\n  }\n\n  function getHintElement(hintsElement, el) {\n    while (el && el != hintsElement) {\n      if (el.nodeName.toUpperCase() === \"LI\" && el.parentNode == hintsElement) return el;\n      el = el.parentNode;\n    }\n  }\n\n  function Widget(completion, data) {\n    this.id = \"cm-complete-\" + Math.floor(Math.random(1e6))\n    this.completion = completion;\n    this.data = data;\n    this.picked = false;\n    var widget = this, cm = completion.cm;\n    var ownerDocument = cm.getInputField().ownerDocument;\n    var parentWindow = ownerDocument.defaultView || ownerDocument.parentWindow;\n\n    var hints = this.hints = ownerDocument.createElement(\"ul\");\n    hints.setAttribute(\"role\", \"listbox\")\n    hints.setAttribute(\"aria-expanded\", \"true\")\n    hints.id = this.id\n    var theme = completion.cm.options.theme;\n    hints.className = \"CodeMirror-hints \" + theme;\n    this.selectedHint = data.selectedHint || 0;\n\n    var completions = data.list;\n    for (var i = 0; i < completions.length; ++i) {\n      var elt = hints.appendChild(ownerDocument.createElement(\"li\")), cur = completions[i];\n      var className = HINT_ELEMENT_CLASS + (i != this.selectedHint ? \"\" : \" \" + ACTIVE_HINT_ELEMENT_CLASS);\n      if (cur.className != null) className = cur.className + \" \" + className;\n      elt.className = className;\n      if (i == this.selectedHint) elt.setAttribute(\"aria-selected\", \"true\")\n      elt.id = this.id + \"-\" + i\n      elt.setAttribute(\"role\", \"option\")\n      if (cur.render) cur.render(elt, data, cur);\n      else elt.appendChild(ownerDocument.createTextNode(cur.displayText || getText(cur)));\n      elt.hintId = i;\n    }\n\n    var container = completion.options.container || ownerDocument.body;\n    var pos = cm.cursorCoords(completion.options.alignWithWord ? data.from : null);\n    var left = pos.left, top = pos.bottom, below = true;\n    var offsetLeft = 0, offsetTop = 0;\n    if (container !== ownerDocument.body) {\n      // We offset the cursor position because left and top are relative to the offsetParent's top left corner.\n      var isContainerPositioned = ['absolute', 'relative', 'fixed'].indexOf(parentWindow.getComputedStyle(container).position) !== -1;\n      var offsetParent = isContainerPositioned ? container : container.offsetParent;\n      var offsetParentPosition = offsetParent.getBoundingClientRect();\n      var bodyPosition = ownerDocument.body.getBoundingClientRect();\n      offsetLeft = (offsetParentPosition.left - bodyPosition.left - offsetParent.scrollLeft);\n      offsetTop = (offsetParentPosition.top - bodyPosition.top - offsetParent.scrollTop);\n    }\n    hints.style.left = (left - offsetLeft) + \"px\";\n    hints.style.top = (top - offsetTop) + \"px\";\n\n    // If we're at the edge of the screen, then we want the menu to appear on the left of the cursor.\n    var winW = parentWindow.innerWidth || Math.max(ownerDocument.body.offsetWidth, ownerDocument.documentElement.offsetWidth);\n    var winH = parentWindow.innerHeight || Math.max(ownerDocument.body.offsetHeight, ownerDocument.documentElement.offsetHeight);\n    container.appendChild(hints);\n    cm.getInputField().setAttribute(\"aria-autocomplete\", \"list\")\n    cm.getInputField().setAttribute(\"aria-owns\", this.id)\n    cm.getInputField().setAttribute(\"aria-activedescendant\", this.id + \"-\" + this.selectedHint)\n\n    var box = completion.options.moveOnOverlap ? hints.getBoundingClientRect() : new DOMRect();\n    var scrolls = completion.options.paddingForScrollbar ? hints.scrollHeight > hints.clientHeight + 1 : false;\n\n    // Compute in the timeout to avoid reflow on init\n    var startScroll;\n    setTimeout(function() { startScroll = cm.getScrollInfo(); });\n\n    var overlapY = box.bottom - winH;\n    if (overlapY > 0) {\n      var height = box.bottom - box.top, curTop = pos.top - (pos.bottom - box.top);\n      if (curTop - height > 0) { // Fits above cursor\n        hints.style.top = (top = pos.top - height - offsetTop) + \"px\";\n        below = false;\n      } else if (height > winH) {\n        hints.style.height = (winH - 5) + \"px\";\n        hints.style.top = (top = pos.bottom - box.top - offsetTop) + \"px\";\n        var cursor = cm.getCursor();\n        if (data.from.ch != cursor.ch) {\n          pos = cm.cursorCoords(cursor);\n          hints.style.left = (left = pos.left - offsetLeft) + \"px\";\n          box = hints.getBoundingClientRect();\n        }\n      }\n    }\n    var overlapX = box.right - winW;\n    if (scrolls) overlapX += cm.display.nativeBarWidth;\n    if (overlapX > 0) {\n      if (box.right - box.left > winW) {\n        hints.style.width = (winW - 5) + \"px\";\n        overlapX -= (box.right - box.left) - winW;\n      }\n      hints.style.left = (left = pos.left - overlapX - offsetLeft) + \"px\";\n    }\n    if (scrolls) for (var node = hints.firstChild; node; node = node.nextSibling)\n      node.style.paddingRight = cm.display.nativeBarWidth + \"px\"\n\n    cm.addKeyMap(this.keyMap = buildKeyMap(completion, {\n      moveFocus: function(n, avoidWrap) { widget.changeActive(widget.selectedHint + n, avoidWrap); },\n      setFocus: function(n) { widget.changeActive(n); },\n      menuSize: function() { return widget.screenAmount(); },\n      length: completions.length,\n      close: function() { completion.close(); },\n      pick: function() { widget.pick(); },\n      data: data\n    }));\n\n    if (completion.options.closeOnUnfocus) {\n      var closingOnBlur;\n      cm.on(\"blur\", this.onBlur = function() { closingOnBlur = setTimeout(function() { completion.close(); }, 100); });\n      cm.on(\"focus\", this.onFocus = function() { clearTimeout(closingOnBlur); });\n    }\n\n    cm.on(\"scroll\", this.onScroll = function() {\n      var curScroll = cm.getScrollInfo(), editor = cm.getWrapperElement().getBoundingClientRect();\n      if (!startScroll) startScroll = cm.getScrollInfo();\n      var newTop = top + startScroll.top - curScroll.top;\n      var point = newTop - (parentWindow.pageYOffset || (ownerDocument.documentElement || ownerDocument.body).scrollTop);\n      if (!below) point += hints.offsetHeight;\n      if (point <= editor.top || point >= editor.bottom) return completion.close();\n      hints.style.top = newTop + \"px\";\n      hints.style.left = (left + startScroll.left - curScroll.left) + \"px\";\n    });\n\n    CodeMirror.on(hints, \"dblclick\", function(e) {\n      var t = getHintElement(hints, e.target || e.srcElement);\n      if (t && t.hintId != null) {widget.changeActive(t.hintId); widget.pick();}\n    });\n\n    CodeMirror.on(hints, \"click\", function(e) {\n      var t = getHintElement(hints, e.target || e.srcElement);\n      if (t && t.hintId != null) {\n        widget.changeActive(t.hintId);\n        if (completion.options.completeOnSingleClick) widget.pick();\n      }\n    });\n\n    CodeMirror.on(hints, \"mousedown\", function() {\n      setTimeout(function(){cm.focus();}, 20);\n    });\n\n    // The first hint doesn't need to be scrolled to on init\n    var selectedHintRange = this.getSelectedHintRange();\n    if (selectedHintRange.from !== 0 || selectedHintRange.to !== 0) {\n      this.scrollToActive();\n    }\n\n    CodeMirror.signal(data, \"select\", completions[this.selectedHint], hints.childNodes[this.selectedHint]);\n    return true;\n  }\n\n  Widget.prototype = {\n    close: function() {\n      if (this.completion.widget != this) return;\n      this.completion.widget = null;\n      if (this.hints.parentNode) this.hints.parentNode.removeChild(this.hints);\n      this.completion.cm.removeKeyMap(this.keyMap);\n      var input = this.completion.cm.getInputField()\n      input.removeAttribute(\"aria-activedescendant\")\n      input.removeAttribute(\"aria-owns\")\n\n      var cm = this.completion.cm;\n      if (this.completion.options.closeOnUnfocus) {\n        cm.off(\"blur\", this.onBlur);\n        cm.off(\"focus\", this.onFocus);\n      }\n      cm.off(\"scroll\", this.onScroll);\n    },\n\n    disable: function() {\n      this.completion.cm.removeKeyMap(this.keyMap);\n      var widget = this;\n      this.keyMap = {Enter: function() { widget.picked = true; }};\n      this.completion.cm.addKeyMap(this.keyMap);\n    },\n\n    pick: function() {\n      this.completion.pick(this.data, this.selectedHint);\n    },\n\n    changeActive: function(i, avoidWrap) {\n      if (i >= this.data.list.length)\n        i = avoidWrap ? this.data.list.length - 1 : 0;\n      else if (i < 0)\n        i = avoidWrap ? 0  : this.data.list.length - 1;\n      if (this.selectedHint == i) return;\n      var node = this.hints.childNodes[this.selectedHint];\n      if (node) {\n        node.className = node.className.replace(\" \" + ACTIVE_HINT_ELEMENT_CLASS, \"\");\n        node.removeAttribute(\"aria-selected\")\n      }\n      node = this.hints.childNodes[this.selectedHint = i];\n      node.className += \" \" + ACTIVE_HINT_ELEMENT_CLASS;\n      node.setAttribute(\"aria-selected\", \"true\")\n      this.completion.cm.getInputField().setAttribute(\"aria-activedescendant\", node.id)\n      this.scrollToActive()\n      CodeMirror.signal(this.data, \"select\", this.data.list[this.selectedHint], node);\n    },\n\n    scrollToActive: function() {\n      var selectedHintRange = this.getSelectedHintRange();\n      var node1 = this.hints.childNodes[selectedHintRange.from];\n      var node2 = this.hints.childNodes[selectedHintRange.to];\n      var firstNode = this.hints.firstChild;\n      if (node1.offsetTop < this.hints.scrollTop)\n        this.hints.scrollTop = node1.offsetTop - firstNode.offsetTop;\n      else if (node2.offsetTop + node2.offsetHeight > this.hints.scrollTop + this.hints.clientHeight)\n        this.hints.scrollTop = node2.offsetTop + node2.offsetHeight - this.hints.clientHeight + firstNode.offsetTop;\n    },\n\n    screenAmount: function() {\n      return Math.floor(this.hints.clientHeight / this.hints.firstChild.offsetHeight) || 1;\n    },\n\n    getSelectedHintRange: function() {\n      var margin = this.completion.options.scrollMargin || 0;\n      return {\n        from: Math.max(0, this.selectedHint - margin),\n        to: Math.min(this.data.list.length - 1, this.selectedHint + margin),\n      };\n    }\n  };\n\n  function applicableHelpers(cm, helpers) {\n    if (!cm.somethingSelected()) return helpers\n    var result = []\n    for (var i = 0; i < helpers.length; i++)\n      if (helpers[i].supportsSelection) result.push(helpers[i])\n    return result\n  }\n\n  function fetchHints(hint, cm, options, callback) {\n    if (hint.async) {\n      hint(cm, callback, options)\n    } else {\n      var result = hint(cm, options)\n      if (result && result.then) result.then(callback)\n      else callback(result)\n    }\n  }\n\n  function resolveAutoHints(cm, pos) {\n    var helpers = cm.getHelpers(pos, \"hint\"), words\n    if (helpers.length) {\n      var resolved = function(cm, callback, options) {\n        var app = applicableHelpers(cm, helpers);\n        function run(i) {\n          if (i == app.length) return callback(null)\n          fetchHints(app[i], cm, options, function(result) {\n            if (result && result.list.length > 0) callback(result)\n            else run(i + 1)\n          })\n        }\n        run(0)\n      }\n      resolved.async = true\n      resolved.supportsSelection = true\n      return resolved\n    } else if (words = cm.getHelper(cm.getCursor(), \"hintWords\")) {\n      return function(cm) { return CodeMirror.hint.fromList(cm, {words: words}) }\n    } else if (CodeMirror.hint.anyword) {\n      return function(cm, options) { return CodeMirror.hint.anyword(cm, options) }\n    } else {\n      return function() {}\n    }\n  }\n\n  CodeMirror.registerHelper(\"hint\", \"auto\", {\n    resolve: resolveAutoHints\n  });\n\n  CodeMirror.registerHelper(\"hint\", \"fromList\", function(cm, options) {\n    var cur = cm.getCursor(), token = cm.getTokenAt(cur)\n    var term, from = CodeMirror.Pos(cur.line, token.start), to = cur\n    if (token.start < cur.ch && /\\w/.test(token.string.charAt(cur.ch - token.start - 1))) {\n      term = token.string.substr(0, cur.ch - token.start)\n    } else {\n      term = \"\"\n      from = cur\n    }\n    var found = [];\n    for (var i = 0; i < options.words.length; i++) {\n      var word = options.words[i];\n      if (word.slice(0, term.length) == term)\n        found.push(word);\n    }\n\n    if (found.length) return {list: found, from: from, to: to};\n  });\n\n  CodeMirror.commands.autocomplete = CodeMirror.showHint;\n\n  var defaultOptions = {\n    hint: CodeMirror.hint.auto,\n    completeSingle: true,\n    alignWithWord: true,\n    closeCharacters: /[\\s()\\[\\]{};:>,]/,\n    closeOnPick: true,\n    closeOnUnfocus: true,\n    updateOnCursorActivity: true,\n    completeOnSingleClick: true,\n    container: null,\n    customKeys: null,\n    extraKeys: null,\n    paddingForScrollbar: true,\n    moveOnOverlap: true,\n  };\n\n  CodeMirror.defineOption(\"hintOptions\", null);\n});\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n(function(mod) {\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n    mod(require(\"../../lib/codemirror\"));\n  else if (typeof define == \"function\" && define.amd) // AMD\n    define([\"../../lib/codemirror\"], mod);\n  else // Plain browser env\n    mod(CodeMirror);\n})(function(CodeMirror) {\n  \"use strict\";\n  var GUTTER_ID = \"CodeMirror-lint-markers\";\n  var LINT_LINE_ID = \"CodeMirror-lint-line-\";\n\n  function showTooltip(cm, e, content) {\n    var tt = document.createElement(\"div\");\n    tt.className = \"CodeMirror-lint-tooltip cm-s-\" + cm.options.theme;\n    tt.appendChild(content.cloneNode(true));\n    if (cm.state.lint.options.selfContain)\n      cm.getWrapperElement().appendChild(tt);\n    else\n      document.body.appendChild(tt);\n\n    function position(e) {\n      if (!tt.parentNode) return CodeMirror.off(document, \"mousemove\", position);\n      tt.style.top = Math.max(0, e.clientY - tt.offsetHeight - 5) + \"px\";\n      tt.style.left = (e.clientX + 5) + \"px\";\n    }\n    CodeMirror.on(document, \"mousemove\", position);\n    position(e);\n    if (tt.style.opacity != null) tt.style.opacity = 1;\n    return tt;\n  }\n  function rm(elt) {\n    if (elt.parentNode) elt.parentNode.removeChild(elt);\n  }\n  function hideTooltip(tt) {\n    if (!tt.parentNode) return;\n    if (tt.style.opacity == null) rm(tt);\n    tt.style.opacity = 0;\n    setTimeout(function() { rm(tt); }, 600);\n  }\n\n  function showTooltipFor(cm, e, content, node) {\n    var tooltip = showTooltip(cm, e, content);\n    function hide() {\n      CodeMirror.off(node, \"mouseout\", hide);\n      if (tooltip) { hideTooltip(tooltip); tooltip = null; }\n    }\n    var poll = setInterval(function() {\n      if (tooltip) for (var n = node;; n = n.parentNode) {\n        if (n && n.nodeType == 11) n = n.host;\n        if (n == document.body) return;\n        if (!n) { hide(); break; }\n      }\n      if (!tooltip) return clearInterval(poll);\n    }, 400);\n    CodeMirror.on(node, \"mouseout\", hide);\n  }\n\n  function LintState(cm, conf, hasGutter) {\n    this.marked = [];\n    if (conf instanceof Function) conf = {getAnnotations: conf};\n    if (!conf || conf === true) conf = {};\n    this.options = {};\n    this.linterOptions = conf.options || {};\n    for (var prop in defaults) this.options[prop] = defaults[prop];\n    for (var prop in conf) {\n      if (defaults.hasOwnProperty(prop)) {\n        if (conf[prop] != null) this.options[prop] = conf[prop];\n      } else if (!conf.options) {\n        this.linterOptions[prop] = conf[prop];\n      }\n    }\n    this.timeout = null;\n    this.hasGutter = hasGutter;\n    this.onMouseOver = function(e) { onMouseOver(cm, e); };\n    this.waitingFor = 0\n  }\n\n  var defaults = {\n    highlightLines: false,\n    tooltips: true,\n    delay: 500,\n    lintOnChange: true,\n    getAnnotations: null,\n    async: false,\n    selfContain: null,\n    formatAnnotation: null,\n    onUpdateLinting: null\n  }\n\n  function clearMarks(cm) {\n    var state = cm.state.lint;\n    if (state.hasGutter) cm.clearGutter(GUTTER_ID);\n    if (state.options.highlightLines) clearErrorLines(cm);\n    for (var i = 0; i < state.marked.length; ++i)\n      state.marked[i].clear();\n    state.marked.length = 0;\n  }\n\n  function clearErrorLines(cm) {\n    cm.eachLine(function(line) {\n      var has = line.wrapClass && /\\bCodeMirror-lint-line-\\w+\\b/.exec(line.wrapClass);\n      if (has) cm.removeLineClass(line, \"wrap\", has[0]);\n    })\n  }\n\n  function makeMarker(cm, labels, severity, multiple, tooltips) {\n    var marker = document.createElement(\"div\"), inner = marker;\n    marker.className = \"CodeMirror-lint-marker CodeMirror-lint-marker-\" + severity;\n    if (multiple) {\n      inner = marker.appendChild(document.createElement(\"div\"));\n      inner.className = \"CodeMirror-lint-marker CodeMirror-lint-marker-multiple\";\n    }\n\n    if (tooltips != false) CodeMirror.on(inner, \"mouseover\", function(e) {\n      showTooltipFor(cm, e, labels, inner);\n    });\n\n    return marker;\n  }\n\n  function getMaxSeverity(a, b) {\n    if (a == \"error\") return a;\n    else return b;\n  }\n\n  function groupByLine(annotations) {\n    var lines = [];\n    for (var i = 0; i < annotations.length; ++i) {\n      var ann = annotations[i], line = ann.from.line;\n      (lines[line] || (lines[line] = [])).push(ann);\n    }\n    return lines;\n  }\n\n  function annotationTooltip(ann) {\n    var severity = ann.severity;\n    if (!severity) severity = \"error\";\n    var tip = document.createElement(\"div\");\n    tip.className = \"CodeMirror-lint-message CodeMirror-lint-message-\" + severity;\n    if (typeof ann.messageHTML != 'undefined') {\n      tip.innerHTML = ann.messageHTML;\n    } else {\n      tip.appendChild(document.createTextNode(ann.message));\n    }\n    return tip;\n  }\n\n  function lintAsync(cm, getAnnotations) {\n    var state = cm.state.lint\n    var id = ++state.waitingFor\n    function abort() {\n      id = -1\n      cm.off(\"change\", abort)\n    }\n    cm.on(\"change\", abort)\n    getAnnotations(cm.getValue(), function(annotations, arg2) {\n      cm.off(\"change\", abort)\n      if (state.waitingFor != id) return\n      if (arg2 && annotations instanceof CodeMirror) annotations = arg2\n      cm.operation(function() {updateLinting(cm, annotations)})\n    }, state.linterOptions, cm);\n  }\n\n  function startLinting(cm) {\n    var state = cm.state.lint;\n    if (!state) return;\n    var options = state.options;\n    /*\n     * Passing rules in `options` property prevents JSHint (and other linters) from complaining\n     * about unrecognized rules like `onUpdateLinting`, `delay`, `lintOnChange`, etc.\n     */\n    var getAnnotations = options.getAnnotations || cm.getHelper(CodeMirror.Pos(0, 0), \"lint\");\n    if (!getAnnotations) return;\n    if (options.async || getAnnotations.async) {\n      lintAsync(cm, getAnnotations)\n    } else {\n      var annotations = getAnnotations(cm.getValue(), state.linterOptions, cm);\n      if (!annotations) return;\n      if (annotations.then) annotations.then(function(issues) {\n        cm.operation(function() {updateLinting(cm, issues)})\n      });\n      else cm.operation(function() {updateLinting(cm, annotations)})\n    }\n  }\n\n  function updateLinting(cm, annotationsNotSorted) {\n    var state = cm.state.lint;\n    if (!state) return;\n    var options = state.options;\n    clearMarks(cm);\n\n    var annotations = groupByLine(annotationsNotSorted);\n\n    for (var line = 0; line < annotations.length; ++line) {\n      var anns = annotations[line];\n      if (!anns) continue;\n\n      // filter out duplicate messages\n      var message = [];\n      anns = anns.filter(function(item) { return message.indexOf(item.message) > -1 ? false : message.push(item.message) });\n\n      var maxSeverity = null;\n      var tipLabel = state.hasGutter && document.createDocumentFragment();\n\n      for (var i = 0; i < anns.length; ++i) {\n        var ann = anns[i];\n        var severity = ann.severity;\n        if (!severity) severity = \"error\";\n        maxSeverity = getMaxSeverity(maxSeverity, severity);\n\n        if (options.formatAnnotation) ann = options.formatAnnotation(ann);\n        if (state.hasGutter) tipLabel.appendChild(annotationTooltip(ann));\n\n        if (ann.to) state.marked.push(cm.markText(ann.from, ann.to, {\n          className: \"CodeMirror-lint-mark CodeMirror-lint-mark-\" + severity,\n          __annotation: ann\n        }));\n      }\n      // use original annotations[line] to show multiple messages\n      if (state.hasGutter)\n        cm.setGutterMarker(line, GUTTER_ID, makeMarker(cm, tipLabel, maxSeverity, annotations[line].length > 1,\n                                                       options.tooltips));\n\n      if (options.highlightLines)\n        cm.addLineClass(line, \"wrap\", LINT_LINE_ID + maxSeverity);\n    }\n    if (options.onUpdateLinting) options.onUpdateLinting(annotationsNotSorted, annotations, cm);\n  }\n\n  function onChange(cm) {\n    var state = cm.state.lint;\n    if (!state) return;\n    clearTimeout(state.timeout);\n    state.timeout = setTimeout(function(){startLinting(cm);}, state.options.delay);\n  }\n\n  function popupTooltips(cm, annotations, e) {\n    var target = e.target || e.srcElement;\n    var tooltip = document.createDocumentFragment();\n    for (var i = 0; i < annotations.length; i++) {\n      var ann = annotations[i];\n      tooltip.appendChild(annotationTooltip(ann));\n    }\n    showTooltipFor(cm, e, tooltip, target);\n  }\n\n  function onMouseOver(cm, e) {\n    var target = e.target || e.srcElement;\n    if (!/\\bCodeMirror-lint-mark-/.test(target.className)) return;\n    var box = target.getBoundingClientRect(), x = (box.left + box.right) / 2, y = (box.top + box.bottom) / 2;\n    var spans = cm.findMarksAt(cm.coordsChar({left: x, top: y}, \"client\"));\n\n    var annotations = [];\n    for (var i = 0; i < spans.length; ++i) {\n      var ann = spans[i].__annotation;\n      if (ann) annotations.push(ann);\n    }\n    if (annotations.length) popupTooltips(cm, annotations, e);\n  }\n\n  CodeMirror.defineOption(\"lint\", false, function(cm, val, old) {\n    if (old && old != CodeMirror.Init) {\n      clearMarks(cm);\n      if (cm.state.lint.options.lintOnChange !== false)\n        cm.off(\"change\", onChange);\n      CodeMirror.off(cm.getWrapperElement(), \"mouseover\", cm.state.lint.onMouseOver);\n      clearTimeout(cm.state.lint.timeout);\n      delete cm.state.lint;\n    }\n\n    if (val) {\n      var gutters = cm.getOption(\"gutters\"), hasLintGutter = false;\n      for (var i = 0; i < gutters.length; ++i) if (gutters[i] == GUTTER_ID) hasLintGutter = true;\n      var state = cm.state.lint = new LintState(cm, val, hasLintGutter);\n      if (state.options.lintOnChange)\n        cm.on(\"change\", onChange);\n      if (state.options.tooltips != false && state.options.tooltips != \"gutter\")\n        CodeMirror.on(cm.getWrapperElement(), \"mouseover\", state.onMouseOver);\n\n      startLinting(cm);\n    }\n  });\n\n  CodeMirror.defineExtension(\"performLint\", function() {\n    startLinting(this);\n  });\n});\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n// Defines jumpToLine command. Uses dialog.js if present.\n\n(function(mod) {\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n    mod(require(\"../../lib/codemirror\"), require(\"../dialog/dialog\"));\n  else if (typeof define == \"function\" && define.amd) // AMD\n    define([\"../../lib/codemirror\", \"../dialog/dialog\"], mod);\n  else // Plain browser env\n    mod(CodeMirror);\n})(function(CodeMirror) {\n  \"use strict\";\n\n  // default search panel location\n  CodeMirror.defineOption(\"search\", {bottom: false});\n\n  function dialog(cm, text, shortText, deflt, f) {\n    if (cm.openDialog) cm.openDialog(text, f, {value: deflt, selectValueOnOpen: true, bottom: cm.options.search.bottom});\n    else f(prompt(shortText, deflt));\n  }\n\n  function getJumpDialog(cm) {\n    return cm.phrase(\"Jump to line:\") + ' <input type=\"text\" style=\"width: 10em\" class=\"CodeMirror-search-field\"/> <span style=\"color: #888\" class=\"CodeMirror-search-hint\">' + cm.phrase(\"(Use line:column or scroll% syntax)\") + '</span>';\n  }\n\n  function interpretLine(cm, string) {\n    var num = Number(string)\n    if (/^[-+]/.test(string)) return cm.getCursor().line + num\n    else return num - 1\n  }\n\n  CodeMirror.commands.jumpToLine = function(cm) {\n    var cur = cm.getCursor();\n    dialog(cm, getJumpDialog(cm), cm.phrase(\"Jump to line:\"), (cur.line + 1) + \":\" + cur.ch, function(posStr) {\n      if (!posStr) return;\n\n      var match;\n      if (match = /^\\s*([\\+\\-]?\\d+)\\s*\\:\\s*(\\d+)\\s*$/.exec(posStr)) {\n        cm.setCursor(interpretLine(cm, match[1]), Number(match[2]))\n      } else if (match = /^\\s*([\\+\\-]?\\d+(\\.\\d+)?)\\%\\s*/.exec(posStr)) {\n        var line = Math.round(cm.lineCount() * Number(match[1]) / 100);\n        if (/^[-+]/.test(match[1])) line = cur.line + line + 1;\n        cm.setCursor(line - 1, cur.ch);\n      } else if (match = /^\\s*\\:?\\s*([\\+\\-]?\\d+)\\s*/.exec(posStr)) {\n        cm.setCursor(interpretLine(cm, match[1]), cur.ch);\n      }\n    });\n  };\n\n  CodeMirror.keyMap[\"default\"][\"Alt-G\"] = \"jumpToLine\";\n});\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n// Define search commands. Depends on dialog.js or another\n// implementation of the openDialog method.\n\n// Replace works a little oddly -- it will do the replace on the next\n// Ctrl-G (or whatever is bound to findNext) press. You prevent a\n// replace by making sure the match is no longer selected when hitting\n// Ctrl-G.\n\n(function(mod) {\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n    mod(require(\"../../lib/codemirror\"), require(\"./searchcursor\"), require(\"../dialog/dialog\"));\n  else if (typeof define == \"function\" && define.amd) // AMD\n    define([\"../../lib/codemirror\", \"./searchcursor\", \"../dialog/dialog\"], mod);\n  else // Plain browser env\n    mod(CodeMirror);\n})(function(CodeMirror) {\n  \"use strict\";\n\n  // default search panel location\n  CodeMirror.defineOption(\"search\", {bottom: false});\n\n  function searchOverlay(query, caseInsensitive) {\n    if (typeof query == \"string\")\n      query = new RegExp(query.replace(/[\\-\\[\\]\\/\\{\\}\\(\\)\\*\\+\\?\\.\\\\\\^\\$\\|]/g, \"\\\\$&\"), caseInsensitive ? \"gi\" : \"g\");\n    else if (!query.global)\n      query = new RegExp(query.source, query.ignoreCase ? \"gi\" : \"g\");\n\n    return {token: function(stream) {\n      query.lastIndex = stream.pos;\n      var match = query.exec(stream.string);\n      if (match && match.index == stream.pos) {\n        stream.pos += match[0].length || 1;\n        return \"searching\";\n      } else if (match) {\n        stream.pos = match.index;\n      } else {\n        stream.skipToEnd();\n      }\n    }};\n  }\n\n  function SearchState() {\n    this.posFrom = this.posTo = this.lastQuery = this.query = null;\n    this.overlay = null;\n  }\n\n  function getSearchState(cm) {\n    return cm.state.search || (cm.state.search = new SearchState());\n  }\n\n  function queryCaseInsensitive(query) {\n    return typeof query == \"string\" && query == query.toLowerCase();\n  }\n\n  function getSearchCursor(cm, query, pos) {\n    // Heuristic: if the query string is all lowercase, do a case insensitive search.\n    return cm.getSearchCursor(query, pos, {caseFold: queryCaseInsensitive(query), multiline: true});\n  }\n\n  function persistentDialog(cm, text, deflt, onEnter, onKeyDown) {\n    cm.openDialog(text, onEnter, {\n      value: deflt,\n      selectValueOnOpen: true,\n      closeOnEnter: false,\n      onClose: function() { clearSearch(cm); },\n      onKeyDown: onKeyDown,\n      bottom: cm.options.search.bottom\n    });\n  }\n\n  function dialog(cm, text, shortText, deflt, f) {\n    if (cm.openDialog) cm.openDialog(text, f, {value: deflt, selectValueOnOpen: true, bottom: cm.options.search.bottom});\n    else f(prompt(shortText, deflt));\n  }\n\n  function confirmDialog(cm, text, shortText, fs) {\n    if (cm.openConfirm) cm.openConfirm(text, fs);\n    else if (confirm(shortText)) fs[0]();\n  }\n\n  function parseString(string) {\n    return string.replace(/\\\\([nrt\\\\])/g, function(match, ch) {\n      if (ch == \"n\") return \"\\n\"\n      if (ch == \"r\") return \"\\r\"\n      if (ch == \"t\") return \"\\t\"\n      if (ch == \"\\\\\") return \"\\\\\"\n      return match\n    })\n  }\n\n  function parseQuery(query) {\n    var isRE = query.match(/^\\/(.*)\\/([a-z]*)$/);\n    if (isRE) {\n      try { query = new RegExp(isRE[1], isRE[2].indexOf(\"i\") == -1 ? \"\" : \"i\"); }\n      catch(e) {} // Not a regular expression after all, do a string search\n    } else {\n      query = parseString(query)\n    }\n    if (typeof query == \"string\" ? query == \"\" : query.test(\"\"))\n      query = /x^/;\n    return query;\n  }\n\n  function startSearch(cm, state, query) {\n    state.queryText = query;\n    state.query = parseQuery(query);\n    cm.removeOverlay(state.overlay, queryCaseInsensitive(state.query));\n    state.overlay = searchOverlay(state.query, queryCaseInsensitive(state.query));\n    cm.addOverlay(state.overlay);\n    if (cm.showMatchesOnScrollbar) {\n      if (state.annotate) { state.annotate.clear(); state.annotate = null; }\n      state.annotate = cm.showMatchesOnScrollbar(state.query, queryCaseInsensitive(state.query));\n    }\n  }\n\n  function doSearch(cm, rev, persistent, immediate) {\n    var state = getSearchState(cm);\n    if (state.query) return findNext(cm, rev);\n    var q = cm.getSelection() || state.lastQuery;\n    if (q instanceof RegExp && q.source == \"x^\") q = null\n    if (persistent && cm.openDialog) {\n      var hiding = null\n      var searchNext = function(query, event) {\n        CodeMirror.e_stop(event);\n        if (!query) return;\n        if (query != state.queryText) {\n          startSearch(cm, state, query);\n          state.posFrom = state.posTo = cm.getCursor();\n        }\n        if (hiding) hiding.style.opacity = 1\n        findNext(cm, event.shiftKey, function(_, to) {\n          var dialog\n          if (to.line < 3 && document.querySelector &&\n              (dialog = cm.display.wrapper.querySelector(\".CodeMirror-dialog\")) &&\n              dialog.getBoundingClientRect().bottom - 4 > cm.cursorCoords(to, \"window\").top)\n            (hiding = dialog).style.opacity = .4\n        })\n      };\n      persistentDialog(cm, getQueryDialog(cm), q, searchNext, function(event, query) {\n        var keyName = CodeMirror.keyName(event)\n        var extra = cm.getOption('extraKeys'), cmd = (extra && extra[keyName]) || CodeMirror.keyMap[cm.getOption(\"keyMap\")][keyName]\n        if (cmd == \"findNext\" || cmd == \"findPrev\" ||\n          cmd == \"findPersistentNext\" || cmd == \"findPersistentPrev\") {\n          CodeMirror.e_stop(event);\n          startSearch(cm, getSearchState(cm), query);\n          cm.execCommand(cmd);\n        } else if (cmd == \"find\" || cmd == \"findPersistent\") {\n          CodeMirror.e_stop(event);\n          searchNext(query, event);\n        }\n      });\n      if (immediate && q) {\n        startSearch(cm, state, q);\n        findNext(cm, rev);\n      }\n    } else {\n      dialog(cm, getQueryDialog(cm), \"Search for:\", q, function(query) {\n        if (query && !state.query) cm.operation(function() {\n          startSearch(cm, state, query);\n          state.posFrom = state.posTo = cm.getCursor();\n          findNext(cm, rev);\n        });\n      });\n    }\n  }\n\n  function findNext(cm, rev, callback) {cm.operation(function() {\n    var state = getSearchState(cm);\n    var cursor = getSearchCursor(cm, state.query, rev ? state.posFrom : state.posTo);\n    if (!cursor.find(rev)) {\n      cursor = getSearchCursor(cm, state.query, rev ? CodeMirror.Pos(cm.lastLine()) : CodeMirror.Pos(cm.firstLine(), 0));\n      if (!cursor.find(rev)) return;\n    }\n    cm.setSelection(cursor.from(), cursor.to());\n    cm.scrollIntoView({from: cursor.from(), to: cursor.to()}, 20);\n    state.posFrom = cursor.from(); state.posTo = cursor.to();\n    if (callback) callback(cursor.from(), cursor.to())\n  });}\n\n  function clearSearch(cm) {cm.operation(function() {\n    var state = getSearchState(cm);\n    state.lastQuery = state.query;\n    if (!state.query) return;\n    state.query = state.queryText = null;\n    cm.removeOverlay(state.overlay);\n    if (state.annotate) { state.annotate.clear(); state.annotate = null; }\n  });}\n\n  function el(tag, attrs) {\n    var element = tag ? document.createElement(tag) : document.createDocumentFragment();\n    for (var key in attrs) {\n      element[key] = attrs[key];\n    }\n    for (var i = 2; i < arguments.length; i++) {\n      var child = arguments[i]\n      element.appendChild(typeof child == \"string\" ? document.createTextNode(child) : child);\n    }\n    return element;\n  }\n\n  function getQueryDialog(cm)  {\n    return el(\"\", null,\n              el(\"span\", {className: \"CodeMirror-search-label\"}, cm.phrase(\"Search:\")), \" \",\n              el(\"input\", {type: \"text\", \"style\": \"width: 10em\", className: \"CodeMirror-search-field\"}), \" \",\n              el(\"span\", {style: \"color: #888\", className: \"CodeMirror-search-hint\"},\n                 cm.phrase(\"(Use /re/ syntax for regexp search)\")));\n  }\n  function getReplaceQueryDialog(cm) {\n    return el(\"\", null, \" \",\n              el(\"input\", {type: \"text\", \"style\": \"width: 10em\", className: \"CodeMirror-search-field\"}), \" \",\n              el(\"span\", {style: \"color: #888\", className: \"CodeMirror-search-hint\"},\n                 cm.phrase(\"(Use /re/ syntax for regexp search)\")));\n  }\n  function getReplacementQueryDialog(cm) {\n    return el(\"\", null,\n              el(\"span\", {className: \"CodeMirror-search-label\"}, cm.phrase(\"With:\")), \" \",\n              el(\"input\", {type: \"text\", \"style\": \"width: 10em\", className: \"CodeMirror-search-field\"}));\n  }\n  function getDoReplaceConfirm(cm) {\n    return el(\"\", null,\n              el(\"span\", {className: \"CodeMirror-search-label\"}, cm.phrase(\"Replace?\")), \" \",\n              el(\"button\", {}, cm.phrase(\"Yes\")), \" \",\n              el(\"button\", {}, cm.phrase(\"No\")), \" \",\n              el(\"button\", {}, cm.phrase(\"All\")), \" \",\n              el(\"button\", {}, cm.phrase(\"Stop\")));\n  }\n\n  function replaceAll(cm, query, text) {\n    cm.operation(function() {\n      for (var cursor = getSearchCursor(cm, query); cursor.findNext();) {\n        if (typeof query != \"string\") {\n          var match = cm.getRange(cursor.from(), cursor.to()).match(query);\n          cursor.replace(text.replace(/\\$(\\d)/g, function(_, i) {return match[i];}));\n        } else cursor.replace(text);\n      }\n    });\n  }\n\n  function replace(cm, all) {\n    if (cm.getOption(\"readOnly\")) return;\n    var query = cm.getSelection() || getSearchState(cm).lastQuery;\n    var dialogText = all ? cm.phrase(\"Replace all:\") : cm.phrase(\"Replace:\")\n    var fragment = el(\"\", null,\n                      el(\"span\", {className: \"CodeMirror-search-label\"}, dialogText),\n                      getReplaceQueryDialog(cm))\n    dialog(cm, fragment, dialogText, query, function(query) {\n      if (!query) return;\n      query = parseQuery(query);\n      dialog(cm, getReplacementQueryDialog(cm), cm.phrase(\"Replace with:\"), \"\", function(text) {\n        text = parseString(text)\n        if (all) {\n          replaceAll(cm, query, text)\n        } else {\n          clearSearch(cm);\n          var cursor = getSearchCursor(cm, query, cm.getCursor(\"from\"));\n          var advance = function() {\n            var start = cursor.from(), match;\n            if (!(match = cursor.findNext())) {\n              cursor = getSearchCursor(cm, query);\n              if (!(match = cursor.findNext()) ||\n                  (start && cursor.from().line == start.line && cursor.from().ch == start.ch)) return;\n            }\n            cm.setSelection(cursor.from(), cursor.to());\n            cm.scrollIntoView({from: cursor.from(), to: cursor.to()});\n            confirmDialog(cm, getDoReplaceConfirm(cm), cm.phrase(\"Replace?\"),\n                          [function() {doReplace(match);}, advance,\n                           function() {replaceAll(cm, query, text)}]);\n          };\n          var doReplace = function(match) {\n            cursor.replace(typeof query == \"string\" ? text :\n                           text.replace(/\\$(\\d)/g, function(_, i) {return match[i];}));\n            advance();\n          };\n          advance();\n        }\n      });\n    });\n  }\n\n  CodeMirror.commands.find = function(cm) {clearSearch(cm); doSearch(cm);};\n  CodeMirror.commands.findPersistent = function(cm) {clearSearch(cm); doSearch(cm, false, true);};\n  CodeMirror.commands.findPersistentNext = function(cm) {doSearch(cm, false, true, true);};\n  CodeMirror.commands.findPersistentPrev = function(cm) {doSearch(cm, true, true, true);};\n  CodeMirror.commands.findNext = doSearch;\n  CodeMirror.commands.findPrev = function(cm) {doSearch(cm, true);};\n  CodeMirror.commands.clearSearch = clearSearch;\n  CodeMirror.commands.replace = replace;\n  CodeMirror.commands.replaceAll = function(cm) {replace(cm, true);};\n});\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n(function(mod) {\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n    mod(require(\"../../lib/codemirror\"))\n  else if (typeof define == \"function\" && define.amd) // AMD\n    define([\"../../lib/codemirror\"], mod)\n  else // Plain browser env\n    mod(CodeMirror)\n})(function(CodeMirror) {\n  \"use strict\"\n  var Pos = CodeMirror.Pos\n\n  function regexpFlags(regexp) {\n    var flags = regexp.flags\n    return flags != null ? flags : (regexp.ignoreCase ? \"i\" : \"\")\n      + (regexp.global ? \"g\" : \"\")\n      + (regexp.multiline ? \"m\" : \"\")\n  }\n\n  function ensureFlags(regexp, flags) {\n    var current = regexpFlags(regexp), target = current\n    for (var i = 0; i < flags.length; i++) if (target.indexOf(flags.charAt(i)) == -1)\n      target += flags.charAt(i)\n    return current == target ? regexp : new RegExp(regexp.source, target)\n  }\n\n  function maybeMultiline(regexp) {\n    return /\\\\s|\\\\n|\\n|\\\\W|\\\\D|\\[\\^/.test(regexp.source)\n  }\n\n  function searchRegexpForward(doc, regexp, start) {\n    regexp = ensureFlags(regexp, \"g\")\n    for (var line = start.line, ch = start.ch, last = doc.lastLine(); line <= last; line++, ch = 0) {\n      regexp.lastIndex = ch\n      var string = doc.getLine(line), match = regexp.exec(string)\n      if (match)\n        return {from: Pos(line, match.index),\n                to: Pos(line, match.index + match[0].length),\n                match: match}\n    }\n  }\n\n  function searchRegexpForwardMultiline(doc, regexp, start) {\n    if (!maybeMultiline(regexp)) return searchRegexpForward(doc, regexp, start)\n\n    regexp = ensureFlags(regexp, \"gm\")\n    var string, chunk = 1\n    for (var line = start.line, last = doc.lastLine(); line <= last;) {\n      // This grows the search buffer in exponentially-sized chunks\n      // between matches, so that nearby matches are fast and don't\n      // require concatenating the whole document (in case we're\n      // searching for something that has tons of matches), but at the\n      // same time, the amount of retries is limited.\n      for (var i = 0; i < chunk; i++) {\n        if (line > last) break\n        var curLine = doc.getLine(line++)\n        string = string == null ? curLine : string + \"\\n\" + curLine\n      }\n      chunk = chunk * 2\n      regexp.lastIndex = start.ch\n      var match = regexp.exec(string)\n      if (match) {\n        var before = string.slice(0, match.index).split(\"\\n\"), inside = match[0].split(\"\\n\")\n        var startLine = start.line + before.length - 1, startCh = before[before.length - 1].length\n        return {from: Pos(startLine, startCh),\n                to: Pos(startLine + inside.length - 1,\n                        inside.length == 1 ? startCh + inside[0].length : inside[inside.length - 1].length),\n                match: match}\n      }\n    }\n  }\n\n  function lastMatchIn(string, regexp, endMargin) {\n    var match, from = 0\n    while (from <= string.length) {\n      regexp.lastIndex = from\n      var newMatch = regexp.exec(string)\n      if (!newMatch) break\n      var end = newMatch.index + newMatch[0].length\n      if (end > string.length - endMargin) break\n      if (!match || end > match.index + match[0].length)\n        match = newMatch\n      from = newMatch.index + 1\n    }\n    return match\n  }\n\n  function searchRegexpBackward(doc, regexp, start) {\n    regexp = ensureFlags(regexp, \"g\")\n    for (var line = start.line, ch = start.ch, first = doc.firstLine(); line >= first; line--, ch = -1) {\n      var string = doc.getLine(line)\n      var match = lastMatchIn(string, regexp, ch < 0 ? 0 : string.length - ch)\n      if (match)\n        return {from: Pos(line, match.index),\n                to: Pos(line, match.index + match[0].length),\n                match: match}\n    }\n  }\n\n  function searchRegexpBackwardMultiline(doc, regexp, start) {\n    if (!maybeMultiline(regexp)) return searchRegexpBackward(doc, regexp, start)\n    regexp = ensureFlags(regexp, \"gm\")\n    var string, chunkSize = 1, endMargin = doc.getLine(start.line).length - start.ch\n    for (var line = start.line, first = doc.firstLine(); line >= first;) {\n      for (var i = 0; i < chunkSize && line >= first; i++) {\n        var curLine = doc.getLine(line--)\n        string = string == null ? curLine : curLine + \"\\n\" + string\n      }\n      chunkSize *= 2\n\n      var match = lastMatchIn(string, regexp, endMargin)\n      if (match) {\n        var before = string.slice(0, match.index).split(\"\\n\"), inside = match[0].split(\"\\n\")\n        var startLine = line + before.length, startCh = before[before.length - 1].length\n        return {from: Pos(startLine, startCh),\n                to: Pos(startLine + inside.length - 1,\n                        inside.length == 1 ? startCh + inside[0].length : inside[inside.length - 1].length),\n                match: match}\n      }\n    }\n  }\n\n  var doFold, noFold\n  if (String.prototype.normalize) {\n    doFold = function(str) { return str.normalize(\"NFD\").toLowerCase() }\n    noFold = function(str) { return str.normalize(\"NFD\") }\n  } else {\n    doFold = function(str) { return str.toLowerCase() }\n    noFold = function(str) { return str }\n  }\n\n  // Maps a position in a case-folded line back to a position in the original line\n  // (compensating for codepoints increasing in number during folding)\n  function adjustPos(orig, folded, pos, foldFunc) {\n    if (orig.length == folded.length) return pos\n    for (var min = 0, max = pos + Math.max(0, orig.length - folded.length);;) {\n      if (min == max) return min\n      var mid = (min + max) >> 1\n      var len = foldFunc(orig.slice(0, mid)).length\n      if (len == pos) return mid\n      else if (len > pos) max = mid\n      else min = mid + 1\n    }\n  }\n\n  function searchStringForward(doc, query, start, caseFold) {\n    // Empty string would match anything and never progress, so we\n    // define it to match nothing instead.\n    if (!query.length) return null\n    var fold = caseFold ? doFold : noFold\n    var lines = fold(query).split(/\\r|\\n\\r?/)\n\n    search: for (var line = start.line, ch = start.ch, last = doc.lastLine() + 1 - lines.length; line <= last; line++, ch = 0) {\n      var orig = doc.getLine(line).slice(ch), string = fold(orig)\n      if (lines.length == 1) {\n        var found = string.indexOf(lines[0])\n        if (found == -1) continue search\n        var start = adjustPos(orig, string, found, fold) + ch\n        return {from: Pos(line, adjustPos(orig, string, found, fold) + ch),\n                to: Pos(line, adjustPos(orig, string, found + lines[0].length, fold) + ch)}\n      } else {\n        var cutFrom = string.length - lines[0].length\n        if (string.slice(cutFrom) != lines[0]) continue search\n        for (var i = 1; i < lines.length - 1; i++)\n          if (fold(doc.getLine(line + i)) != lines[i]) continue search\n        var end = doc.getLine(line + lines.length - 1), endString = fold(end), lastLine = lines[lines.length - 1]\n        if (endString.slice(0, lastLine.length) != lastLine) continue search\n        return {from: Pos(line, adjustPos(orig, string, cutFrom, fold) + ch),\n                to: Pos(line + lines.length - 1, adjustPos(end, endString, lastLine.length, fold))}\n      }\n    }\n  }\n\n  function searchStringBackward(doc, query, start, caseFold) {\n    if (!query.length) return null\n    var fold = caseFold ? doFold : noFold\n    var lines = fold(query).split(/\\r|\\n\\r?/)\n\n    search: for (var line = start.line, ch = start.ch, first = doc.firstLine() - 1 + lines.length; line >= first; line--, ch = -1) {\n      var orig = doc.getLine(line)\n      if (ch > -1) orig = orig.slice(0, ch)\n      var string = fold(orig)\n      if (lines.length == 1) {\n        var found = string.lastIndexOf(lines[0])\n        if (found == -1) continue search\n        return {from: Pos(line, adjustPos(orig, string, found, fold)),\n                to: Pos(line, adjustPos(orig, string, found + lines[0].length, fold))}\n      } else {\n        var lastLine = lines[lines.length - 1]\n        if (string.slice(0, lastLine.length) != lastLine) continue search\n        for (var i = 1, start = line - lines.length + 1; i < lines.length - 1; i++)\n          if (fold(doc.getLine(start + i)) != lines[i]) continue search\n        var top = doc.getLine(line + 1 - lines.length), topString = fold(top)\n        if (topString.slice(topString.length - lines[0].length) != lines[0]) continue search\n        return {from: Pos(line + 1 - lines.length, adjustPos(top, topString, top.length - lines[0].length, fold)),\n                to: Pos(line, adjustPos(orig, string, lastLine.length, fold))}\n      }\n    }\n  }\n\n  function SearchCursor(doc, query, pos, options) {\n    this.atOccurrence = false\n    this.afterEmptyMatch = false\n    this.doc = doc\n    pos = pos ? doc.clipPos(pos) : Pos(0, 0)\n    this.pos = {from: pos, to: pos}\n\n    var caseFold\n    if (typeof options == \"object\") {\n      caseFold = options.caseFold\n    } else { // Backwards compat for when caseFold was the 4th argument\n      caseFold = options\n      options = null\n    }\n\n    if (typeof query == \"string\") {\n      if (caseFold == null) caseFold = false\n      this.matches = function(reverse, pos) {\n        return (reverse ? searchStringBackward : searchStringForward)(doc, query, pos, caseFold)\n      }\n    } else {\n      query = ensureFlags(query, \"gm\")\n      if (!options || options.multiline !== false)\n        this.matches = function(reverse, pos) {\n          return (reverse ? searchRegexpBackwardMultiline : searchRegexpForwardMultiline)(doc, query, pos)\n        }\n      else\n        this.matches = function(reverse, pos) {\n          return (reverse ? searchRegexpBackward : searchRegexpForward)(doc, query, pos)\n        }\n    }\n  }\n\n  SearchCursor.prototype = {\n    findNext: function() {return this.find(false)},\n    findPrevious: function() {return this.find(true)},\n\n    find: function(reverse) {\n      var head = this.doc.clipPos(reverse ? this.pos.from : this.pos.to);\n      if (this.afterEmptyMatch && this.atOccurrence) {\n        // do not return the same 0 width match twice\n        head = Pos(head.line, head.ch)\n        if (reverse) {\n          head.ch--;\n          if (head.ch < 0) {\n            head.line--;\n            head.ch = (this.doc.getLine(head.line) || \"\").length;\n          }\n        } else {\n          head.ch++;\n          if (head.ch > (this.doc.getLine(head.line) || \"\").length) {\n            head.ch = 0;\n            head.line++;\n          }\n        }\n        if (CodeMirror.cmpPos(head, this.doc.clipPos(head)) != 0) {\n           return this.atOccurrence = false\n        }\n      }\n      var result = this.matches(reverse, head)\n      this.afterEmptyMatch = result && CodeMirror.cmpPos(result.from, result.to) == 0\n\n      if (result) {\n        this.pos = result\n        this.atOccurrence = true\n        return this.pos.match || true\n      } else {\n        var end = Pos(reverse ? this.doc.firstLine() : this.doc.lastLine() + 1, 0)\n        this.pos = {from: end, to: end}\n        return this.atOccurrence = false\n      }\n    },\n\n    from: function() {if (this.atOccurrence) return this.pos.from},\n    to: function() {if (this.atOccurrence) return this.pos.to},\n\n    replace: function(newText, origin) {\n      if (!this.atOccurrence) return\n      var lines = CodeMirror.splitLines(newText)\n      this.doc.replaceRange(lines, this.pos.from, this.pos.to, origin)\n      this.pos.to = Pos(this.pos.from.line + lines.length - 1,\n                        lines[lines.length - 1].length + (lines.length == 1 ? this.pos.from.ch : 0))\n    }\n  }\n\n  CodeMirror.defineExtension(\"getSearchCursor\", function(query, pos, caseFold) {\n    return new SearchCursor(this.doc, query, pos, caseFold)\n  })\n  CodeMirror.defineDocExtension(\"getSearchCursor\", function(query, pos, caseFold) {\n    return new SearchCursor(this, query, pos, caseFold)\n  })\n\n  CodeMirror.defineExtension(\"selectMatches\", function(query, caseFold) {\n    var ranges = []\n    var cur = this.getSearchCursor(query, this.getCursor(\"from\"), caseFold)\n    while (cur.findNext()) {\n      if (CodeMirror.cmpPos(cur.to(), this.getCursor(\"to\")) > 0) break\n      ranges.push({anchor: cur.from(), head: cur.to()})\n    }\n    if (ranges.length)\n      this.setSelections(ranges, 0)\n  })\n});\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n// A rough approximation of Sublime Text's keybindings\n// Depends on addon/search/searchcursor.js and optionally addon/dialog/dialogs.js\n\n(function(mod) {\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n    mod(require(\"../lib/codemirror\"), require(\"../addon/search/searchcursor\"), require(\"../addon/edit/matchbrackets\"));\n  else if (typeof define == \"function\" && define.amd) // AMD\n    define([\"../lib/codemirror\", \"../addon/search/searchcursor\", \"../addon/edit/matchbrackets\"], mod);\n  else // Plain browser env\n    mod(CodeMirror);\n})(function(CodeMirror) {\n  \"use strict\";\n\n  var cmds = CodeMirror.commands;\n  var Pos = CodeMirror.Pos;\n\n  // This is not exactly Sublime's algorithm. I couldn't make heads or tails of that.\n  function findPosSubword(doc, start, dir) {\n    if (dir < 0 && start.ch == 0) return doc.clipPos(Pos(start.line - 1));\n    var line = doc.getLine(start.line);\n    if (dir > 0 && start.ch >= line.length) return doc.clipPos(Pos(start.line + 1, 0));\n    var state = \"start\", type, startPos = start.ch;\n    for (var pos = startPos, e = dir < 0 ? 0 : line.length, i = 0; pos != e; pos += dir, i++) {\n      var next = line.charAt(dir < 0 ? pos - 1 : pos);\n      var cat = next != \"_\" && CodeMirror.isWordChar(next) ? \"w\" : \"o\";\n      if (cat == \"w\" && next.toUpperCase() == next) cat = \"W\";\n      if (state == \"start\") {\n        if (cat != \"o\") { state = \"in\"; type = cat; }\n        else startPos = pos + dir\n      } else if (state == \"in\") {\n        if (type != cat) {\n          if (type == \"w\" && cat == \"W\" && dir < 0) pos--;\n          if (type == \"W\" && cat == \"w\" && dir > 0) { // From uppercase to lowercase\n            if (pos == startPos + 1) { type = \"w\"; continue; }\n            else pos--;\n          }\n          break;\n        }\n      }\n    }\n    return Pos(start.line, pos);\n  }\n\n  function moveSubword(cm, dir) {\n    cm.extendSelectionsBy(function(range) {\n      if (cm.display.shift || cm.doc.extend || range.empty())\n        return findPosSubword(cm.doc, range.head, dir);\n      else\n        return dir < 0 ? range.from() : range.to();\n    });\n  }\n\n  cmds.goSubwordLeft = function(cm) { moveSubword(cm, -1); };\n  cmds.goSubwordRight = function(cm) { moveSubword(cm, 1); };\n\n  cmds.scrollLineUp = function(cm) {\n    var info = cm.getScrollInfo();\n    if (!cm.somethingSelected()) {\n      var visibleBottomLine = cm.lineAtHeight(info.top + info.clientHeight, \"local\");\n      if (cm.getCursor().line >= visibleBottomLine)\n        cm.execCommand(\"goLineUp\");\n    }\n    cm.scrollTo(null, info.top - cm.defaultTextHeight());\n  };\n  cmds.scrollLineDown = function(cm) {\n    var info = cm.getScrollInfo();\n    if (!cm.somethingSelected()) {\n      var visibleTopLine = cm.lineAtHeight(info.top, \"local\")+1;\n      if (cm.getCursor().line <= visibleTopLine)\n        cm.execCommand(\"goLineDown\");\n    }\n    cm.scrollTo(null, info.top + cm.defaultTextHeight());\n  };\n\n  cmds.splitSelectionByLine = function(cm) {\n    var ranges = cm.listSelections(), lineRanges = [];\n    for (var i = 0; i < ranges.length; i++) {\n      var from = ranges[i].from(), to = ranges[i].to();\n      for (var line = from.line; line <= to.line; ++line)\n        if (!(to.line > from.line && line == to.line && to.ch == 0))\n          lineRanges.push({anchor: line == from.line ? from : Pos(line, 0),\n                           head: line == to.line ? to : Pos(line)});\n    }\n    cm.setSelections(lineRanges, 0);\n  };\n\n  cmds.singleSelectionTop = function(cm) {\n    var range = cm.listSelections()[0];\n    cm.setSelection(range.anchor, range.head, {scroll: false});\n  };\n\n  cmds.selectLine = function(cm) {\n    var ranges = cm.listSelections(), extended = [];\n    for (var i = 0; i < ranges.length; i++) {\n      var range = ranges[i];\n      extended.push({anchor: Pos(range.from().line, 0),\n                     head: Pos(range.to().line + 1, 0)});\n    }\n    cm.setSelections(extended);\n  };\n\n  function insertLine(cm, above) {\n    if (cm.isReadOnly()) return CodeMirror.Pass\n    cm.operation(function() {\n      var len = cm.listSelections().length, newSelection = [], last = -1;\n      for (var i = 0; i < len; i++) {\n        var head = cm.listSelections()[i].head;\n        if (head.line <= last) continue;\n        var at = Pos(head.line + (above ? 0 : 1), 0);\n        cm.replaceRange(\"\\n\", at, null, \"+insertLine\");\n        cm.indentLine(at.line, null, true);\n        newSelection.push({head: at, anchor: at});\n        last = head.line + 1;\n      }\n      cm.setSelections(newSelection);\n    });\n    cm.execCommand(\"indentAuto\");\n  }\n\n  cmds.insertLineAfter = function(cm) { return insertLine(cm, false); };\n\n  cmds.insertLineBefore = function(cm) { return insertLine(cm, true); };\n\n  function wordAt(cm, pos) {\n    var start = pos.ch, end = start, line = cm.getLine(pos.line);\n    while (start && CodeMirror.isWordChar(line.charAt(start - 1))) --start;\n    while (end < line.length && CodeMirror.isWordChar(line.charAt(end))) ++end;\n    return {from: Pos(pos.line, start), to: Pos(pos.line, end), word: line.slice(start, end)};\n  }\n\n  cmds.selectNextOccurrence = function(cm) {\n    var from = cm.getCursor(\"from\"), to = cm.getCursor(\"to\");\n    var fullWord = cm.state.sublimeFindFullWord == cm.doc.sel;\n    if (CodeMirror.cmpPos(from, to) == 0) {\n      var word = wordAt(cm, from);\n      if (!word.word) return;\n      cm.setSelection(word.from, word.to);\n      fullWord = true;\n    } else {\n      var text = cm.getRange(from, to);\n      var query = fullWord ? new RegExp(\"\\\\b\" + text + \"\\\\b\") : text;\n      var cur = cm.getSearchCursor(query, to);\n      var found = cur.findNext();\n      if (!found) {\n        cur = cm.getSearchCursor(query, Pos(cm.firstLine(), 0));\n        found = cur.findNext();\n      }\n      if (!found || isSelectedRange(cm.listSelections(), cur.from(), cur.to())) return\n      cm.addSelection(cur.from(), cur.to());\n    }\n    if (fullWord)\n      cm.state.sublimeFindFullWord = cm.doc.sel;\n  };\n\n  cmds.skipAndSelectNextOccurrence = function(cm) {\n    var prevAnchor = cm.getCursor(\"anchor\"), prevHead = cm.getCursor(\"head\");\n    cmds.selectNextOccurrence(cm);\n    if (CodeMirror.cmpPos(prevAnchor, prevHead) != 0) {\n      cm.doc.setSelections(cm.doc.listSelections()\n          .filter(function (sel) {\n            return sel.anchor != prevAnchor || sel.head != prevHead;\n          }));\n    }\n  }\n\n  function addCursorToSelection(cm, dir) {\n    var ranges = cm.listSelections(), newRanges = [];\n    for (var i = 0; i < ranges.length; i++) {\n      var range = ranges[i];\n      var newAnchor = cm.findPosV(\n          range.anchor, dir, \"line\", range.anchor.goalColumn);\n      var newHead = cm.findPosV(\n          range.head, dir, \"line\", range.head.goalColumn);\n      newAnchor.goalColumn = range.anchor.goalColumn != null ?\n          range.anchor.goalColumn : cm.cursorCoords(range.anchor, \"div\").left;\n      newHead.goalColumn = range.head.goalColumn != null ?\n          range.head.goalColumn : cm.cursorCoords(range.head, \"div\").left;\n      var newRange = {anchor: newAnchor, head: newHead};\n      newRanges.push(range);\n      newRanges.push(newRange);\n    }\n    cm.setSelections(newRanges);\n  }\n  cmds.addCursorToPrevLine = function(cm) { addCursorToSelection(cm, -1); };\n  cmds.addCursorToNextLine = function(cm) { addCursorToSelection(cm, 1); };\n\n  function isSelectedRange(ranges, from, to) {\n    for (var i = 0; i < ranges.length; i++)\n      if (CodeMirror.cmpPos(ranges[i].from(), from) == 0 &&\n          CodeMirror.cmpPos(ranges[i].to(), to) == 0) return true\n    return false\n  }\n\n  var mirror = \"(){}[]\";\n  function selectBetweenBrackets(cm) {\n    var ranges = cm.listSelections(), newRanges = []\n    for (var i = 0; i < ranges.length; i++) {\n      var range = ranges[i], pos = range.head, opening = cm.scanForBracket(pos, -1);\n      if (!opening) return false;\n      for (;;) {\n        var closing = cm.scanForBracket(pos, 1);\n        if (!closing) return false;\n        if (closing.ch == mirror.charAt(mirror.indexOf(opening.ch) + 1)) {\n          var startPos = Pos(opening.pos.line, opening.pos.ch + 1);\n          if (CodeMirror.cmpPos(startPos, range.from()) == 0 &&\n              CodeMirror.cmpPos(closing.pos, range.to()) == 0) {\n            opening = cm.scanForBracket(opening.pos, -1);\n            if (!opening) return false;\n          } else {\n            newRanges.push({anchor: startPos, head: closing.pos});\n            break;\n          }\n        }\n        pos = Pos(closing.pos.line, closing.pos.ch + 1);\n      }\n    }\n    cm.setSelections(newRanges);\n    return true;\n  }\n\n  cmds.selectScope = function(cm) {\n    selectBetweenBrackets(cm) || cm.execCommand(\"selectAll\");\n  };\n  cmds.selectBetweenBrackets = function(cm) {\n    if (!selectBetweenBrackets(cm)) return CodeMirror.Pass;\n  };\n\n  function puncType(type) {\n    return !type ? null : /\\bpunctuation\\b/.test(type) ? type : undefined\n  }\n\n  cmds.goToBracket = function(cm) {\n    cm.extendSelectionsBy(function(range) {\n      var next = cm.scanForBracket(range.head, 1, puncType(cm.getTokenTypeAt(range.head)));\n      if (next && CodeMirror.cmpPos(next.pos, range.head) != 0) return next.pos;\n      var prev = cm.scanForBracket(range.head, -1, puncType(cm.getTokenTypeAt(Pos(range.head.line, range.head.ch + 1))));\n      return prev && Pos(prev.pos.line, prev.pos.ch + 1) || range.head;\n    });\n  };\n\n  cmds.swapLineUp = function(cm) {\n    if (cm.isReadOnly()) return CodeMirror.Pass\n    var ranges = cm.listSelections(), linesToMove = [], at = cm.firstLine() - 1, newSels = [];\n    for (var i = 0; i < ranges.length; i++) {\n      var range = ranges[i], from = range.from().line - 1, to = range.to().line;\n      newSels.push({anchor: Pos(range.anchor.line - 1, range.anchor.ch),\n                    head: Pos(range.head.line - 1, range.head.ch)});\n      if (range.to().ch == 0 && !range.empty()) --to;\n      if (from > at) linesToMove.push(from, to);\n      else if (linesToMove.length) linesToMove[linesToMove.length - 1] = to;\n      at = to;\n    }\n    cm.operation(function() {\n      for (var i = 0; i < linesToMove.length; i += 2) {\n        var from = linesToMove[i], to = linesToMove[i + 1];\n        var line = cm.getLine(from);\n        cm.replaceRange(\"\", Pos(from, 0), Pos(from + 1, 0), \"+swapLine\");\n        if (to > cm.lastLine())\n          cm.replaceRange(\"\\n\" + line, Pos(cm.lastLine()), null, \"+swapLine\");\n        else\n          cm.replaceRange(line + \"\\n\", Pos(to, 0), null, \"+swapLine\");\n      }\n      cm.setSelections(newSels);\n      cm.scrollIntoView();\n    });\n  };\n\n  cmds.swapLineDown = function(cm) {\n    if (cm.isReadOnly()) return CodeMirror.Pass\n    var ranges = cm.listSelections(), linesToMove = [], at = cm.lastLine() + 1;\n    for (var i = ranges.length - 1; i >= 0; i--) {\n      var range = ranges[i], from = range.to().line + 1, to = range.from().line;\n      if (range.to().ch == 0 && !range.empty()) from--;\n      if (from < at) linesToMove.push(from, to);\n      else if (linesToMove.length) linesToMove[linesToMove.length - 1] = to;\n      at = to;\n    }\n    cm.operation(function() {\n      for (var i = linesToMove.length - 2; i >= 0; i -= 2) {\n        var from = linesToMove[i], to = linesToMove[i + 1];\n        var line = cm.getLine(from);\n        if (from == cm.lastLine())\n          cm.replaceRange(\"\", Pos(from - 1), Pos(from), \"+swapLine\");\n        else\n          cm.replaceRange(\"\", Pos(from, 0), Pos(from + 1, 0), \"+swapLine\");\n        cm.replaceRange(line + \"\\n\", Pos(to, 0), null, \"+swapLine\");\n      }\n      cm.scrollIntoView();\n    });\n  };\n\n  cmds.toggleCommentIndented = function(cm) {\n    cm.toggleComment({ indent: true });\n  }\n\n  cmds.joinLines = function(cm) {\n    var ranges = cm.listSelections(), joined = [];\n    for (var i = 0; i < ranges.length; i++) {\n      var range = ranges[i], from = range.from();\n      var start = from.line, end = range.to().line;\n      while (i < ranges.length - 1 && ranges[i + 1].from().line == end)\n        end = ranges[++i].to().line;\n      joined.push({start: start, end: end, anchor: !range.empty() && from});\n    }\n    cm.operation(function() {\n      var offset = 0, ranges = [];\n      for (var i = 0; i < joined.length; i++) {\n        var obj = joined[i];\n        var anchor = obj.anchor && Pos(obj.anchor.line - offset, obj.anchor.ch), head;\n        for (var line = obj.start; line <= obj.end; line++) {\n          var actual = line - offset;\n          if (line == obj.end) head = Pos(actual, cm.getLine(actual).length + 1);\n          if (actual < cm.lastLine()) {\n            cm.replaceRange(\" \", Pos(actual), Pos(actual + 1, /^\\s*/.exec(cm.getLine(actual + 1))[0].length));\n            ++offset;\n          }\n        }\n        ranges.push({anchor: anchor || head, head: head});\n      }\n      cm.setSelections(ranges, 0);\n    });\n  };\n\n  cmds.duplicateLine = function(cm) {\n    cm.operation(function() {\n      var rangeCount = cm.listSelections().length;\n      for (var i = 0; i < rangeCount; i++) {\n        var range = cm.listSelections()[i];\n        if (range.empty())\n          cm.replaceRange(cm.getLine(range.head.line) + \"\\n\", Pos(range.head.line, 0));\n        else\n          cm.replaceRange(cm.getRange(range.from(), range.to()), range.from());\n      }\n      cm.scrollIntoView();\n    });\n  };\n\n\n  function sortLines(cm, caseSensitive, direction) {\n    if (cm.isReadOnly()) return CodeMirror.Pass\n    var ranges = cm.listSelections(), toSort = [], selected;\n    for (var i = 0; i < ranges.length; i++) {\n      var range = ranges[i];\n      if (range.empty()) continue;\n      var from = range.from().line, to = range.to().line;\n      while (i < ranges.length - 1 && ranges[i + 1].from().line == to)\n        to = ranges[++i].to().line;\n      if (!ranges[i].to().ch) to--;\n      toSort.push(from, to);\n    }\n    if (toSort.length) selected = true;\n    else toSort.push(cm.firstLine(), cm.lastLine());\n\n    cm.operation(function() {\n      var ranges = [];\n      for (var i = 0; i < toSort.length; i += 2) {\n        var from = toSort[i], to = toSort[i + 1];\n        var start = Pos(from, 0), end = Pos(to);\n        var lines = cm.getRange(start, end, false);\n        if (caseSensitive)\n          lines.sort(function(a, b) { return a < b ? -direction : a == b ? 0 : direction; });\n        else\n          lines.sort(function(a, b) {\n            var au = a.toUpperCase(), bu = b.toUpperCase();\n            if (au != bu) { a = au; b = bu; }\n            return a < b ? -direction : a == b ? 0 : direction;\n          });\n        cm.replaceRange(lines, start, end);\n        if (selected) ranges.push({anchor: start, head: Pos(to + 1, 0)});\n      }\n      if (selected) cm.setSelections(ranges, 0);\n    });\n  }\n\n  cmds.sortLines = function(cm) { sortLines(cm, true, 1); };\n  cmds.reverseSortLines = function(cm) { sortLines(cm, true, -1); };\n  cmds.sortLinesInsensitive = function(cm) { sortLines(cm, false, 1); };\n  cmds.reverseSortLinesInsensitive = function(cm) { sortLines(cm, false, -1); };\n\n  cmds.nextBookmark = function(cm) {\n    var marks = cm.state.sublimeBookmarks;\n    if (marks) while (marks.length) {\n      var current = marks.shift();\n      var found = current.find();\n      if (found) {\n        marks.push(current);\n        return cm.setSelection(found.from, found.to);\n      }\n    }\n  };\n\n  cmds.prevBookmark = function(cm) {\n    var marks = cm.state.sublimeBookmarks;\n    if (marks) while (marks.length) {\n      marks.unshift(marks.pop());\n      var found = marks[marks.length - 1].find();\n      if (!found)\n        marks.pop();\n      else\n        return cm.setSelection(found.from, found.to);\n    }\n  };\n\n  cmds.toggleBookmark = function(cm) {\n    var ranges = cm.listSelections();\n    var marks = cm.state.sublimeBookmarks || (cm.state.sublimeBookmarks = []);\n    for (var i = 0; i < ranges.length; i++) {\n      var from = ranges[i].from(), to = ranges[i].to();\n      var found = ranges[i].empty() ? cm.findMarksAt(from) : cm.findMarks(from, to);\n      for (var j = 0; j < found.length; j++) {\n        if (found[j].sublimeBookmark) {\n          found[j].clear();\n          for (var k = 0; k < marks.length; k++)\n            if (marks[k] == found[j])\n              marks.splice(k--, 1);\n          break;\n        }\n      }\n      if (j == found.length)\n        marks.push(cm.markText(from, to, {sublimeBookmark: true, clearWhenEmpty: false}));\n    }\n  };\n\n  cmds.clearBookmarks = function(cm) {\n    var marks = cm.state.sublimeBookmarks;\n    if (marks) for (var i = 0; i < marks.length; i++) marks[i].clear();\n    marks.length = 0;\n  };\n\n  cmds.selectBookmarks = function(cm) {\n    var marks = cm.state.sublimeBookmarks, ranges = [];\n    if (marks) for (var i = 0; i < marks.length; i++) {\n      var found = marks[i].find();\n      if (!found)\n        marks.splice(i--, 0);\n      else\n        ranges.push({anchor: found.from, head: found.to});\n    }\n    if (ranges.length)\n      cm.setSelections(ranges, 0);\n  };\n\n  function modifyWordOrSelection(cm, mod) {\n    cm.operation(function() {\n      var ranges = cm.listSelections(), indices = [], replacements = [];\n      for (var i = 0; i < ranges.length; i++) {\n        var range = ranges[i];\n        if (range.empty()) { indices.push(i); replacements.push(\"\"); }\n        else replacements.push(mod(cm.getRange(range.from(), range.to())));\n      }\n      cm.replaceSelections(replacements, \"around\", \"case\");\n      for (var i = indices.length - 1, at; i >= 0; i--) {\n        var range = ranges[indices[i]];\n        if (at && CodeMirror.cmpPos(range.head, at) > 0) continue;\n        var word = wordAt(cm, range.head);\n        at = word.from;\n        cm.replaceRange(mod(word.word), word.from, word.to);\n      }\n    });\n  }\n\n  cmds.smartBackspace = function(cm) {\n    if (cm.somethingSelected()) return CodeMirror.Pass;\n\n    cm.operation(function() {\n      var cursors = cm.listSelections();\n      var indentUnit = cm.getOption(\"indentUnit\");\n\n      for (var i = cursors.length - 1; i >= 0; i--) {\n        var cursor = cursors[i].head;\n        var toStartOfLine = cm.getRange({line: cursor.line, ch: 0}, cursor);\n        var column = CodeMirror.countColumn(toStartOfLine, null, cm.getOption(\"tabSize\"));\n\n        // Delete by one character by default\n        var deletePos = cm.findPosH(cursor, -1, \"char\", false);\n\n        if (toStartOfLine && !/\\S/.test(toStartOfLine) && column % indentUnit == 0) {\n          var prevIndent = new Pos(cursor.line,\n            CodeMirror.findColumn(toStartOfLine, column - indentUnit, indentUnit));\n\n          // Smart delete only if we found a valid prevIndent location\n          if (prevIndent.ch != cursor.ch) deletePos = prevIndent;\n        }\n\n        cm.replaceRange(\"\", deletePos, cursor, \"+delete\");\n      }\n    });\n  };\n\n  cmds.delLineRight = function(cm) {\n    cm.operation(function() {\n      var ranges = cm.listSelections();\n      for (var i = ranges.length - 1; i >= 0; i--)\n        cm.replaceRange(\"\", ranges[i].anchor, Pos(ranges[i].to().line), \"+delete\");\n      cm.scrollIntoView();\n    });\n  };\n\n  cmds.upcaseAtCursor = function(cm) {\n    modifyWordOrSelection(cm, function(str) { return str.toUpperCase(); });\n  };\n  cmds.downcaseAtCursor = function(cm) {\n    modifyWordOrSelection(cm, function(str) { return str.toLowerCase(); });\n  };\n\n  cmds.setSublimeMark = function(cm) {\n    if (cm.state.sublimeMark) cm.state.sublimeMark.clear();\n    cm.state.sublimeMark = cm.setBookmark(cm.getCursor());\n  };\n  cmds.selectToSublimeMark = function(cm) {\n    var found = cm.state.sublimeMark && cm.state.sublimeMark.find();\n    if (found) cm.setSelection(cm.getCursor(), found);\n  };\n  cmds.deleteToSublimeMark = function(cm) {\n    var found = cm.state.sublimeMark && cm.state.sublimeMark.find();\n    if (found) {\n      var from = cm.getCursor(), to = found;\n      if (CodeMirror.cmpPos(from, to) > 0) { var tmp = to; to = from; from = tmp; }\n      cm.state.sublimeKilled = cm.getRange(from, to);\n      cm.replaceRange(\"\", from, to);\n    }\n  };\n  cmds.swapWithSublimeMark = function(cm) {\n    var found = cm.state.sublimeMark && cm.state.sublimeMark.find();\n    if (found) {\n      cm.state.sublimeMark.clear();\n      cm.state.sublimeMark = cm.setBookmark(cm.getCursor());\n      cm.setCursor(found);\n    }\n  };\n  cmds.sublimeYank = function(cm) {\n    if (cm.state.sublimeKilled != null)\n      cm.replaceSelection(cm.state.sublimeKilled, null, \"paste\");\n  };\n\n  cmds.showInCenter = function(cm) {\n    var pos = cm.cursorCoords(null, \"local\");\n    cm.scrollTo(null, (pos.top + pos.bottom) / 2 - cm.getScrollInfo().clientHeight / 2);\n  };\n\n  function getTarget(cm) {\n    var from = cm.getCursor(\"from\"), to = cm.getCursor(\"to\");\n    if (CodeMirror.cmpPos(from, to) == 0) {\n      var word = wordAt(cm, from);\n      if (!word.word) return;\n      from = word.from;\n      to = word.to;\n    }\n    return {from: from, to: to, query: cm.getRange(from, to), word: word};\n  }\n\n  function findAndGoTo(cm, forward) {\n    var target = getTarget(cm);\n    if (!target) return;\n    var query = target.query;\n    var cur = cm.getSearchCursor(query, forward ? target.to : target.from);\n\n    if (forward ? cur.findNext() : cur.findPrevious()) {\n      cm.setSelection(cur.from(), cur.to());\n    } else {\n      cur = cm.getSearchCursor(query, forward ? Pos(cm.firstLine(), 0)\n                                              : cm.clipPos(Pos(cm.lastLine())));\n      if (forward ? cur.findNext() : cur.findPrevious())\n        cm.setSelection(cur.from(), cur.to());\n      else if (target.word)\n        cm.setSelection(target.from, target.to);\n    }\n  };\n  cmds.findUnder = function(cm) { findAndGoTo(cm, true); };\n  cmds.findUnderPrevious = function(cm) { findAndGoTo(cm,false); };\n  cmds.findAllUnder = function(cm) {\n    var target = getTarget(cm);\n    if (!target) return;\n    var cur = cm.getSearchCursor(target.query);\n    var matches = [];\n    var primaryIndex = -1;\n    while (cur.findNext()) {\n      matches.push({anchor: cur.from(), head: cur.to()});\n      if (cur.from().line <= target.from.line && cur.from().ch <= target.from.ch)\n        primaryIndex++;\n    }\n    cm.setSelections(matches, primaryIndex);\n  };\n\n\n  var keyMap = CodeMirror.keyMap;\n  keyMap.macSublime = {\n    \"Cmd-Left\": \"goLineStartSmart\",\n    \"Shift-Tab\": \"indentLess\",\n    \"Shift-Ctrl-K\": \"deleteLine\",\n    \"Alt-Q\": \"wrapLines\",\n    \"Ctrl-Left\": \"goSubwordLeft\",\n    \"Ctrl-Right\": \"goSubwordRight\",\n    \"Ctrl-Alt-Up\": \"scrollLineUp\",\n    \"Ctrl-Alt-Down\": \"scrollLineDown\",\n    \"Cmd-L\": \"selectLine\",\n    \"Shift-Cmd-L\": \"splitSelectionByLine\",\n    \"Esc\": \"singleSelectionTop\",\n    \"Cmd-Enter\": \"insertLineAfter\",\n    \"Shift-Cmd-Enter\": \"insertLineBefore\",\n    \"Cmd-D\": \"selectNextOccurrence\",\n    \"Shift-Cmd-Space\": \"selectScope\",\n    \"Shift-Cmd-M\": \"selectBetweenBrackets\",\n    \"Cmd-M\": \"goToBracket\",\n    \"Cmd-Ctrl-Up\": \"swapLineUp\",\n    \"Cmd-Ctrl-Down\": \"swapLineDown\",\n    \"Cmd-/\": \"toggleCommentIndented\",\n    \"Cmd-J\": \"joinLines\",\n    \"Shift-Cmd-D\": \"duplicateLine\",\n    \"F5\": \"sortLines\",\n    \"Shift-F5\": \"reverseSortLines\",\n    \"Cmd-F5\": \"sortLinesInsensitive\",\n    \"Shift-Cmd-F5\": \"reverseSortLinesInsensitive\",\n    \"F2\": \"nextBookmark\",\n    \"Shift-F2\": \"prevBookmark\",\n    \"Cmd-F2\": \"toggleBookmark\",\n    \"Shift-Cmd-F2\": \"clearBookmarks\",\n    \"Alt-F2\": \"selectBookmarks\",\n    \"Backspace\": \"smartBackspace\",\n    \"Cmd-K Cmd-D\": \"skipAndSelectNextOccurrence\",\n    \"Cmd-K Cmd-K\": \"delLineRight\",\n    \"Cmd-K Cmd-U\": \"upcaseAtCursor\",\n    \"Cmd-K Cmd-L\": \"downcaseAtCursor\",\n    \"Cmd-K Cmd-Space\": \"setSublimeMark\",\n    \"Cmd-K Cmd-A\": \"selectToSublimeMark\",\n    \"Cmd-K Cmd-W\": \"deleteToSublimeMark\",\n    \"Cmd-K Cmd-X\": \"swapWithSublimeMark\",\n    \"Cmd-K Cmd-Y\": \"sublimeYank\",\n    \"Cmd-K Cmd-C\": \"showInCenter\",\n    \"Cmd-K Cmd-G\": \"clearBookmarks\",\n    \"Cmd-K Cmd-Backspace\": \"delLineLeft\",\n    \"Cmd-K Cmd-1\": \"foldAll\",\n    \"Cmd-K Cmd-0\": \"unfoldAll\",\n    \"Cmd-K Cmd-J\": \"unfoldAll\",\n    \"Ctrl-Shift-Up\": \"addCursorToPrevLine\",\n    \"Ctrl-Shift-Down\": \"addCursorToNextLine\",\n    \"Cmd-F3\": \"findUnder\",\n    \"Shift-Cmd-F3\": \"findUnderPrevious\",\n    \"Alt-F3\": \"findAllUnder\",\n    \"Shift-Cmd-[\": \"fold\",\n    \"Shift-Cmd-]\": \"unfold\",\n    \"Cmd-I\": \"findIncremental\",\n    \"Shift-Cmd-I\": \"findIncrementalReverse\",\n    \"Cmd-H\": \"replace\",\n    \"F3\": \"findNext\",\n    \"Shift-F3\": \"findPrev\",\n    \"fallthrough\": \"macDefault\"\n  };\n  CodeMirror.normalizeKeyMap(keyMap.macSublime);\n\n  keyMap.pcSublime = {\n    \"Shift-Tab\": \"indentLess\",\n    \"Shift-Ctrl-K\": \"deleteLine\",\n    \"Alt-Q\": \"wrapLines\",\n    \"Ctrl-T\": \"transposeChars\",\n    \"Alt-Left\": \"goSubwordLeft\",\n    \"Alt-Right\": \"goSubwordRight\",\n    \"Ctrl-Up\": \"scrollLineUp\",\n    \"Ctrl-Down\": \"scrollLineDown\",\n    \"Ctrl-L\": \"selectLine\",\n    \"Shift-Ctrl-L\": \"splitSelectionByLine\",\n    \"Esc\": \"singleSelectionTop\",\n    \"Ctrl-Enter\": \"insertLineAfter\",\n    \"Shift-Ctrl-Enter\": \"insertLineBefore\",\n    \"Ctrl-D\": \"selectNextOccurrence\",\n    \"Shift-Ctrl-Space\": \"selectScope\",\n    \"Shift-Ctrl-M\": \"selectBetweenBrackets\",\n    \"Ctrl-M\": \"goToBracket\",\n    \"Shift-Ctrl-Up\": \"swapLineUp\",\n    \"Shift-Ctrl-Down\": \"swapLineDown\",\n    \"Ctrl-/\": \"toggleCommentIndented\",\n    \"Ctrl-J\": \"joinLines\",\n    \"Shift-Ctrl-D\": \"duplicateLine\",\n    \"F9\": \"sortLines\",\n    \"Shift-F9\": \"reverseSortLines\",\n    \"Ctrl-F9\": \"sortLinesInsensitive\",\n    \"Shift-Ctrl-F9\": \"reverseSortLinesInsensitive\",\n    \"F2\": \"nextBookmark\",\n    \"Shift-F2\": \"prevBookmark\",\n    \"Ctrl-F2\": \"toggleBookmark\",\n    \"Shift-Ctrl-F2\": \"clearBookmarks\",\n    \"Alt-F2\": \"selectBookmarks\",\n    \"Backspace\": \"smartBackspace\",\n    \"Ctrl-K Ctrl-D\": \"skipAndSelectNextOccurrence\",\n    \"Ctrl-K Ctrl-K\": \"delLineRight\",\n    \"Ctrl-K Ctrl-U\": \"upcaseAtCursor\",\n    \"Ctrl-K Ctrl-L\": \"downcaseAtCursor\",\n    \"Ctrl-K Ctrl-Space\": \"setSublimeMark\",\n    \"Ctrl-K Ctrl-A\": \"selectToSublimeMark\",\n    \"Ctrl-K Ctrl-W\": \"deleteToSublimeMark\",\n    \"Ctrl-K Ctrl-X\": \"swapWithSublimeMark\",\n    \"Ctrl-K Ctrl-Y\": \"sublimeYank\",\n    \"Ctrl-K Ctrl-C\": \"showInCenter\",\n    \"Ctrl-K Ctrl-G\": \"clearBookmarks\",\n    \"Ctrl-K Ctrl-Backspace\": \"delLineLeft\",\n    \"Ctrl-K Ctrl-1\": \"foldAll\",\n    \"Ctrl-K Ctrl-0\": \"unfoldAll\",\n    \"Ctrl-K Ctrl-J\": \"unfoldAll\",\n    \"Ctrl-Alt-Up\": \"addCursorToPrevLine\",\n    \"Ctrl-Alt-Down\": \"addCursorToNextLine\",\n    \"Ctrl-F3\": \"findUnder\",\n    \"Shift-Ctrl-F3\": \"findUnderPrevious\",\n    \"Alt-F3\": \"findAllUnder\",\n    \"Shift-Ctrl-[\": \"fold\",\n    \"Shift-Ctrl-]\": \"unfold\",\n    \"Ctrl-I\": \"findIncremental\",\n    \"Shift-Ctrl-I\": \"findIncrementalReverse\",\n    \"Ctrl-H\": \"replace\",\n    \"F3\": \"findNext\",\n    \"Shift-F3\": \"findPrev\",\n    \"fallthrough\": \"pcDefault\"\n  };\n  CodeMirror.normalizeKeyMap(keyMap.pcSublime);\n\n  var mac = keyMap.default == keyMap.macDefault;\n  keyMap.sublime = mac ? keyMap.macSublime : keyMap.pcSublime;\n});\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n// This is CodeMirror (https://codemirror.net), a code editor\n// implemented in JavaScript on top of the browser's DOM.\n//\n// You can find some technical background for some of the code below\n// at http://marijnhaverbeke.nl/blog/#cm-internals .\n\n(function (global, factory) {\n  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :\n  typeof define === 'function' && define.amd ? define(factory) :\n  (global = global || self, global.CodeMirror = factory());\n}(this, (function () { 'use strict';\n\n  // Kludges for bugs and behavior differences that can't be feature\n  // detected are enabled based on userAgent etc sniffing.\n  var userAgent = navigator.userAgent;\n  var platform = navigator.platform;\n\n  var gecko = /gecko\\/\\d/i.test(userAgent);\n  var ie_upto10 = /MSIE \\d/.test(userAgent);\n  var ie_11up = /Trident\\/(?:[7-9]|\\d{2,})\\..*rv:(\\d+)/.exec(userAgent);\n  var edge = /Edge\\/(\\d+)/.exec(userAgent);\n  var ie = ie_upto10 || ie_11up || edge;\n  var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : +(edge || ie_11up)[1]);\n  var webkit = !edge && /WebKit\\//.test(userAgent);\n  var qtwebkit = webkit && /Qt\\/\\d+\\.\\d+/.test(userAgent);\n  var chrome = !edge && /Chrome\\//.test(userAgent);\n  var presto = /Opera\\//.test(userAgent);\n  var safari = /Apple Computer/.test(navigator.vendor);\n  var mac_geMountainLion = /Mac OS X 1\\d\\D([8-9]|\\d\\d)\\D/.test(userAgent);\n  var phantom = /PhantomJS/.test(userAgent);\n\n  var ios = safari && (/Mobile\\/\\w+/.test(userAgent) || navigator.maxTouchPoints > 2);\n  var android = /Android/.test(userAgent);\n  // This is woefully incomplete. Suggestions for alternative methods welcome.\n  var mobile = ios || android || /webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(userAgent);\n  var mac = ios || /Mac/.test(platform);\n  var chromeOS = /\\bCrOS\\b/.test(userAgent);\n  var windows = /win/i.test(platform);\n\n  var presto_version = presto && userAgent.match(/Version\\/(\\d*\\.\\d*)/);\n  if (presto_version) { presto_version = Number(presto_version[1]); }\n  if (presto_version && presto_version >= 15) { presto = false; webkit = true; }\n  // Some browsers use the wrong event properties to signal cmd/ctrl on OS X\n  var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11));\n  var captureRightClick = gecko || (ie && ie_version >= 9);\n\n  function classTest(cls) { return new RegExp(\"(^|\\\\s)\" + cls + \"(?:$|\\\\s)\\\\s*\") }\n\n  var rmClass = function(node, cls) {\n    var current = node.className;\n    var match = classTest(cls).exec(current);\n    if (match) {\n      var after = current.slice(match.index + match[0].length);\n      node.className = current.slice(0, match.index) + (after ? match[1] + after : \"\");\n    }\n  };\n\n  function removeChildren(e) {\n    for (var count = e.childNodes.length; count > 0; --count)\n      { e.removeChild(e.firstChild); }\n    return e\n  }\n\n  function removeChildrenAndAdd(parent, e) {\n    return removeChildren(parent).appendChild(e)\n  }\n\n  function elt(tag, content, className, style) {\n    var e = document.createElement(tag);\n    if (className) { e.className = className; }\n    if (style) { e.style.cssText = style; }\n    if (typeof content == \"string\") { e.appendChild(document.createTextNode(content)); }\n    else if (content) { for (var i = 0; i < content.length; ++i) { e.appendChild(content[i]); } }\n    return e\n  }\n  // wrapper for elt, which removes the elt from the accessibility tree\n  function eltP(tag, content, className, style) {\n    var e = elt(tag, content, className, style);\n    e.setAttribute(\"role\", \"presentation\");\n    return e\n  }\n\n  var range;\n  if (document.createRange) { range = function(node, start, end, endNode) {\n    var r = document.createRange();\n    r.setEnd(endNode || node, end);\n    r.setStart(node, start);\n    return r\n  }; }\n  else { range = function(node, start, end) {\n    var r = document.body.createTextRange();\n    try { r.moveToElementText(node.parentNode); }\n    catch(e) { return r }\n    r.collapse(true);\n    r.moveEnd(\"character\", end);\n    r.moveStart(\"character\", start);\n    return r\n  }; }\n\n  function contains(parent, child) {\n    if (child.nodeType == 3) // Android browser always returns false when child is a textnode\n      { child = child.parentNode; }\n    if (parent.contains)\n      { return parent.contains(child) }\n    do {\n      if (child.nodeType == 11) { child = child.host; }\n      if (child == parent) { return true }\n    } while (child = child.parentNode)\n  }\n\n  function activeElt() {\n    // IE and Edge may throw an \"Unspecified Error\" when accessing document.activeElement.\n    // IE < 10 will throw when accessed while the page is loading or in an iframe.\n    // IE > 9 and Edge will throw when accessed in an iframe if document.body is unavailable.\n    var activeElement;\n    try {\n      activeElement = document.activeElement;\n    } catch(e) {\n      activeElement = document.body || null;\n    }\n    while (activeElement && activeElement.shadowRoot && activeElement.shadowRoot.activeElement)\n      { activeElement = activeElement.shadowRoot.activeElement; }\n    return activeElement\n  }\n\n  function addClass(node, cls) {\n    var current = node.className;\n    if (!classTest(cls).test(current)) { node.className += (current ? \" \" : \"\") + cls; }\n  }\n  function joinClasses(a, b) {\n    var as = a.split(\" \");\n    for (var i = 0; i < as.length; i++)\n      { if (as[i] && !classTest(as[i]).test(b)) { b += \" \" + as[i]; } }\n    return b\n  }\n\n  var selectInput = function(node) { node.select(); };\n  if (ios) // Mobile Safari apparently has a bug where select() is broken.\n    { selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; }; }\n  else if (ie) // Suppress mysterious IE10 errors\n    { selectInput = function(node) { try { node.select(); } catch(_e) {} }; }\n\n  function bind(f) {\n    var args = Array.prototype.slice.call(arguments, 1);\n    return function(){return f.apply(null, args)}\n  }\n\n  function copyObj(obj, target, overwrite) {\n    if (!target) { target = {}; }\n    for (var prop in obj)\n      { if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop)))\n        { target[prop] = obj[prop]; } }\n    return target\n  }\n\n  // Counts the column offset in a string, taking tabs into account.\n  // Used mostly to find indentation.\n  function countColumn(string, end, tabSize, startIndex, startValue) {\n    if (end == null) {\n      end = string.search(/[^\\s\\u00a0]/);\n      if (end == -1) { end = string.length; }\n    }\n    for (var i = startIndex || 0, n = startValue || 0;;) {\n      var nextTab = string.indexOf(\"\\t\", i);\n      if (nextTab < 0 || nextTab >= end)\n        { return n + (end - i) }\n      n += nextTab - i;\n      n += tabSize - (n % tabSize);\n      i = nextTab + 1;\n    }\n  }\n\n  var Delayed = function() {\n    this.id = null;\n    this.f = null;\n    this.time = 0;\n    this.handler = bind(this.onTimeout, this);\n  };\n  Delayed.prototype.onTimeout = function (self) {\n    self.id = 0;\n    if (self.time <= +new Date) {\n      self.f();\n    } else {\n      setTimeout(self.handler, self.time - +new Date);\n    }\n  };\n  Delayed.prototype.set = function (ms, f) {\n    this.f = f;\n    var time = +new Date + ms;\n    if (!this.id || time < this.time) {\n      clearTimeout(this.id);\n      this.id = setTimeout(this.handler, ms);\n      this.time = time;\n    }\n  };\n\n  function indexOf(array, elt) {\n    for (var i = 0; i < array.length; ++i)\n      { if (array[i] == elt) { return i } }\n    return -1\n  }\n\n  // Number of pixels added to scroller and sizer to hide scrollbar\n  var scrollerGap = 50;\n\n  // Returned or thrown by various protocols to signal 'I'm not\n  // handling this'.\n  var Pass = {toString: function(){return \"CodeMirror.Pass\"}};\n\n  // Reused option objects for setSelection & friends\n  var sel_dontScroll = {scroll: false}, sel_mouse = {origin: \"*mouse\"}, sel_move = {origin: \"+move\"};\n\n  // The inverse of countColumn -- find the offset that corresponds to\n  // a particular column.\n  function findColumn(string, goal, tabSize) {\n    for (var pos = 0, col = 0;;) {\n      var nextTab = string.indexOf(\"\\t\", pos);\n      if (nextTab == -1) { nextTab = string.length; }\n      var skipped = nextTab - pos;\n      if (nextTab == string.length || col + skipped >= goal)\n        { return pos + Math.min(skipped, goal - col) }\n      col += nextTab - pos;\n      col += tabSize - (col % tabSize);\n      pos = nextTab + 1;\n      if (col >= goal) { return pos }\n    }\n  }\n\n  var spaceStrs = [\"\"];\n  function spaceStr(n) {\n    while (spaceStrs.length <= n)\n      { spaceStrs.push(lst(spaceStrs) + \" \"); }\n    return spaceStrs[n]\n  }\n\n  function lst(arr) { return arr[arr.length-1] }\n\n  function map(array, f) {\n    var out = [];\n    for (var i = 0; i < array.length; i++) { out[i] = f(array[i], i); }\n    return out\n  }\n\n  function insertSorted(array, value, score) {\n    var pos = 0, priority = score(value);\n    while (pos < array.length && score(array[pos]) <= priority) { pos++; }\n    array.splice(pos, 0, value);\n  }\n\n  function nothing() {}\n\n  function createObj(base, props) {\n    var inst;\n    if (Object.create) {\n      inst = Object.create(base);\n    } else {\n      nothing.prototype = base;\n      inst = new nothing();\n    }\n    if (props) { copyObj(props, inst); }\n    return inst\n  }\n\n  var nonASCIISingleCaseWordChar = /[\\u00df\\u0587\\u0590-\\u05f4\\u0600-\\u06ff\\u3040-\\u309f\\u30a0-\\u30ff\\u3400-\\u4db5\\u4e00-\\u9fcc\\uac00-\\ud7af]/;\n  function isWordCharBasic(ch) {\n    return /\\w/.test(ch) || ch > \"\\x80\" &&\n      (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch))\n  }\n  function isWordChar(ch, helper) {\n    if (!helper) { return isWordCharBasic(ch) }\n    if (helper.source.indexOf(\"\\\\w\") > -1 && isWordCharBasic(ch)) { return true }\n    return helper.test(ch)\n  }\n\n  function isEmpty(obj) {\n    for (var n in obj) { if (obj.hasOwnProperty(n) && obj[n]) { return false } }\n    return true\n  }\n\n  // Extending unicode characters. A series of a non-extending char +\n  // any number of extending chars is treated as a single unit as far\n  // as editing and measuring is concerned. This is not fully correct,\n  // since some scripts/fonts/browsers also treat other configurations\n  // of code points as a group.\n  var extendingChars = /[\\u0300-\\u036f\\u0483-\\u0489\\u0591-\\u05bd\\u05bf\\u05c1\\u05c2\\u05c4\\u05c5\\u05c7\\u0610-\\u061a\\u064b-\\u065e\\u0670\\u06d6-\\u06dc\\u06de-\\u06e4\\u06e7\\u06e8\\u06ea-\\u06ed\\u0711\\u0730-\\u074a\\u07a6-\\u07b0\\u07eb-\\u07f3\\u0816-\\u0819\\u081b-\\u0823\\u0825-\\u0827\\u0829-\\u082d\\u0900-\\u0902\\u093c\\u0941-\\u0948\\u094d\\u0951-\\u0955\\u0962\\u0963\\u0981\\u09bc\\u09be\\u09c1-\\u09c4\\u09cd\\u09d7\\u09e2\\u09e3\\u0a01\\u0a02\\u0a3c\\u0a41\\u0a42\\u0a47\\u0a48\\u0a4b-\\u0a4d\\u0a51\\u0a70\\u0a71\\u0a75\\u0a81\\u0a82\\u0abc\\u0ac1-\\u0ac5\\u0ac7\\u0ac8\\u0acd\\u0ae2\\u0ae3\\u0b01\\u0b3c\\u0b3e\\u0b3f\\u0b41-\\u0b44\\u0b4d\\u0b56\\u0b57\\u0b62\\u0b63\\u0b82\\u0bbe\\u0bc0\\u0bcd\\u0bd7\\u0c3e-\\u0c40\\u0c46-\\u0c48\\u0c4a-\\u0c4d\\u0c55\\u0c56\\u0c62\\u0c63\\u0cbc\\u0cbf\\u0cc2\\u0cc6\\u0ccc\\u0ccd\\u0cd5\\u0cd6\\u0ce2\\u0ce3\\u0d3e\\u0d41-\\u0d44\\u0d4d\\u0d57\\u0d62\\u0d63\\u0dca\\u0dcf\\u0dd2-\\u0dd4\\u0dd6\\u0ddf\\u0e31\\u0e34-\\u0e3a\\u0e47-\\u0e4e\\u0eb1\\u0eb4-\\u0eb9\\u0ebb\\u0ebc\\u0ec8-\\u0ecd\\u0f18\\u0f19\\u0f35\\u0f37\\u0f39\\u0f71-\\u0f7e\\u0f80-\\u0f84\\u0f86\\u0f87\\u0f90-\\u0f97\\u0f99-\\u0fbc\\u0fc6\\u102d-\\u1030\\u1032-\\u1037\\u1039\\u103a\\u103d\\u103e\\u1058\\u1059\\u105e-\\u1060\\u1071-\\u1074\\u1082\\u1085\\u1086\\u108d\\u109d\\u135f\\u1712-\\u1714\\u1732-\\u1734\\u1752\\u1753\\u1772\\u1773\\u17b7-\\u17bd\\u17c6\\u17c9-\\u17d3\\u17dd\\u180b-\\u180d\\u18a9\\u1920-\\u1922\\u1927\\u1928\\u1932\\u1939-\\u193b\\u1a17\\u1a18\\u1a56\\u1a58-\\u1a5e\\u1a60\\u1a62\\u1a65-\\u1a6c\\u1a73-\\u1a7c\\u1a7f\\u1b00-\\u1b03\\u1b34\\u1b36-\\u1b3a\\u1b3c\\u1b42\\u1b6b-\\u1b73\\u1b80\\u1b81\\u1ba2-\\u1ba5\\u1ba8\\u1ba9\\u1c2c-\\u1c33\\u1c36\\u1c37\\u1cd0-\\u1cd2\\u1cd4-\\u1ce0\\u1ce2-\\u1ce8\\u1ced\\u1dc0-\\u1de6\\u1dfd-\\u1dff\\u200c\\u200d\\u20d0-\\u20f0\\u2cef-\\u2cf1\\u2de0-\\u2dff\\u302a-\\u302f\\u3099\\u309a\\ua66f-\\ua672\\ua67c\\ua67d\\ua6f0\\ua6f1\\ua802\\ua806\\ua80b\\ua825\\ua826\\ua8c4\\ua8e0-\\ua8f1\\ua926-\\ua92d\\ua947-\\ua951\\ua980-\\ua982\\ua9b3\\ua9b6-\\ua9b9\\ua9bc\\uaa29-\\uaa2e\\uaa31\\uaa32\\uaa35\\uaa36\\uaa43\\uaa4c\\uaab0\\uaab2-\\uaab4\\uaab7\\uaab8\\uaabe\\uaabf\\uaac1\\uabe5\\uabe8\\uabed\\udc00-\\udfff\\ufb1e\\ufe00-\\ufe0f\\ufe20-\\ufe26\\uff9e\\uff9f]/;\n  function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch) }\n\n  // Returns a number from the range [`0`; `str.length`] unless `pos` is outside that range.\n  function skipExtendingChars(str, pos, dir) {\n    while ((dir < 0 ? pos > 0 : pos < str.length) && isExtendingChar(str.charAt(pos))) { pos += dir; }\n    return pos\n  }\n\n  // Returns the value from the range [`from`; `to`] that satisfies\n  // `pred` and is closest to `from`. Assumes that at least `to`\n  // satisfies `pred`. Supports `from` being greater than `to`.\n  function findFirst(pred, from, to) {\n    // At any point we are certain `to` satisfies `pred`, don't know\n    // whether `from` does.\n    var dir = from > to ? -1 : 1;\n    for (;;) {\n      if (from == to) { return from }\n      var midF = (from + to) / 2, mid = dir < 0 ? Math.ceil(midF) : Math.floor(midF);\n      if (mid == from) { return pred(mid) ? from : to }\n      if (pred(mid)) { to = mid; }\n      else { from = mid + dir; }\n    }\n  }\n\n  // BIDI HELPERS\n\n  function iterateBidiSections(order, from, to, f) {\n    if (!order) { return f(from, to, \"ltr\", 0) }\n    var found = false;\n    for (var i = 0; i < order.length; ++i) {\n      var part = order[i];\n      if (part.from < to && part.to > from || from == to && part.to == from) {\n        f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? \"rtl\" : \"ltr\", i);\n        found = true;\n      }\n    }\n    if (!found) { f(from, to, \"ltr\"); }\n  }\n\n  var bidiOther = null;\n  function getBidiPartAt(order, ch, sticky) {\n    var found;\n    bidiOther = null;\n    for (var i = 0; i < order.length; ++i) {\n      var cur = order[i];\n      if (cur.from < ch && cur.to > ch) { return i }\n      if (cur.to == ch) {\n        if (cur.from != cur.to && sticky == \"before\") { found = i; }\n        else { bidiOther = i; }\n      }\n      if (cur.from == ch) {\n        if (cur.from != cur.to && sticky != \"before\") { found = i; }\n        else { bidiOther = i; }\n      }\n    }\n    return found != null ? found : bidiOther\n  }\n\n  // Bidirectional ordering algorithm\n  // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm\n  // that this (partially) implements.\n\n  // One-char codes used for character types:\n  // L (L):   Left-to-Right\n  // R (R):   Right-to-Left\n  // r (AL):  Right-to-Left Arabic\n  // 1 (EN):  European Number\n  // + (ES):  European Number Separator\n  // % (ET):  European Number Terminator\n  // n (AN):  Arabic Number\n  // , (CS):  Common Number Separator\n  // m (NSM): Non-Spacing Mark\n  // b (BN):  Boundary Neutral\n  // s (B):   Paragraph Separator\n  // t (S):   Segment Separator\n  // w (WS):  Whitespace\n  // N (ON):  Other Neutrals\n\n  // Returns null if characters are ordered as they appear\n  // (left-to-right), or an array of sections ({from, to, level}\n  // objects) in the order in which they occur visually.\n  var bidiOrdering = (function() {\n    // Character types for codepoints 0 to 0xff\n    var lowTypes = \"bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN\";\n    // Character types for codepoints 0x600 to 0x6f9\n    var arabicTypes = \"nnnnnnNNr%%r,rNNmmmmmmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmnNmmmmmmrrmmNmmmmrr1111111111\";\n    function charType(code) {\n      if (code <= 0xf7) { return lowTypes.charAt(code) }\n      else if (0x590 <= code && code <= 0x5f4) { return \"R\" }\n      else if (0x600 <= code && code <= 0x6f9) { return arabicTypes.charAt(code - 0x600) }\n      else if (0x6ee <= code && code <= 0x8ac) { return \"r\" }\n      else if (0x2000 <= code && code <= 0x200b) { return \"w\" }\n      else if (code == 0x200c) { return \"b\" }\n      else { return \"L\" }\n    }\n\n    var bidiRE = /[\\u0590-\\u05f4\\u0600-\\u06ff\\u0700-\\u08ac]/;\n    var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;\n\n    function BidiSpan(level, from, to) {\n      this.level = level;\n      this.from = from; this.to = to;\n    }\n\n    return function(str, direction) {\n      var outerType = direction == \"ltr\" ? \"L\" : \"R\";\n\n      if (str.length == 0 || direction == \"ltr\" && !bidiRE.test(str)) { return false }\n      var len = str.length, types = [];\n      for (var i = 0; i < len; ++i)\n        { types.push(charType(str.charCodeAt(i))); }\n\n      // W1. Examine each non-spacing mark (NSM) in the level run, and\n      // change the type of the NSM to the type of the previous\n      // character. If the NSM is at the start of the level run, it will\n      // get the type of sor.\n      for (var i$1 = 0, prev = outerType; i$1 < len; ++i$1) {\n        var type = types[i$1];\n        if (type == \"m\") { types[i$1] = prev; }\n        else { prev = type; }\n      }\n\n      // W2. Search backwards from each instance of a European number\n      // until the first strong type (R, L, AL, or sor) is found. If an\n      // AL is found, change the type of the European number to Arabic\n      // number.\n      // W3. Change all ALs to R.\n      for (var i$2 = 0, cur = outerType; i$2 < len; ++i$2) {\n        var type$1 = types[i$2];\n        if (type$1 == \"1\" && cur == \"r\") { types[i$2] = \"n\"; }\n        else if (isStrong.test(type$1)) { cur = type$1; if (type$1 == \"r\") { types[i$2] = \"R\"; } }\n      }\n\n      // W4. A single European separator between two European numbers\n      // changes to a European number. A single common separator between\n      // two numbers of the same type changes to that type.\n      for (var i$3 = 1, prev$1 = types[0]; i$3 < len - 1; ++i$3) {\n        var type$2 = types[i$3];\n        if (type$2 == \"+\" && prev$1 == \"1\" && types[i$3+1] == \"1\") { types[i$3] = \"1\"; }\n        else if (type$2 == \",\" && prev$1 == types[i$3+1] &&\n                 (prev$1 == \"1\" || prev$1 == \"n\")) { types[i$3] = prev$1; }\n        prev$1 = type$2;\n      }\n\n      // W5. A sequence of European terminators adjacent to European\n      // numbers changes to all European numbers.\n      // W6. Otherwise, separators and terminators change to Other\n      // Neutral.\n      for (var i$4 = 0; i$4 < len; ++i$4) {\n        var type$3 = types[i$4];\n        if (type$3 == \",\") { types[i$4] = \"N\"; }\n        else if (type$3 == \"%\") {\n          var end = (void 0);\n          for (end = i$4 + 1; end < len && types[end] == \"%\"; ++end) {}\n          var replace = (i$4 && types[i$4-1] == \"!\") || (end < len && types[end] == \"1\") ? \"1\" : \"N\";\n          for (var j = i$4; j < end; ++j) { types[j] = replace; }\n          i$4 = end - 1;\n        }\n      }\n\n      // W7. Search backwards from each instance of a European number\n      // until the first strong type (R, L, or sor) is found. If an L is\n      // found, then change the type of the European number to L.\n      for (var i$5 = 0, cur$1 = outerType; i$5 < len; ++i$5) {\n        var type$4 = types[i$5];\n        if (cur$1 == \"L\" && type$4 == \"1\") { types[i$5] = \"L\"; }\n        else if (isStrong.test(type$4)) { cur$1 = type$4; }\n      }\n\n      // N1. A sequence of neutrals takes the direction of the\n      // surrounding strong text if the text on both sides has the same\n      // direction. European and Arabic numbers act as if they were R in\n      // terms of their influence on neutrals. Start-of-level-run (sor)\n      // and end-of-level-run (eor) are used at level run boundaries.\n      // N2. Any remaining neutrals take the embedding direction.\n      for (var i$6 = 0; i$6 < len; ++i$6) {\n        if (isNeutral.test(types[i$6])) {\n          var end$1 = (void 0);\n          for (end$1 = i$6 + 1; end$1 < len && isNeutral.test(types[end$1]); ++end$1) {}\n          var before = (i$6 ? types[i$6-1] : outerType) == \"L\";\n          var after = (end$1 < len ? types[end$1] : outerType) == \"L\";\n          var replace$1 = before == after ? (before ? \"L\" : \"R\") : outerType;\n          for (var j$1 = i$6; j$1 < end$1; ++j$1) { types[j$1] = replace$1; }\n          i$6 = end$1 - 1;\n        }\n      }\n\n      // Here we depart from the documented algorithm, in order to avoid\n      // building up an actual levels array. Since there are only three\n      // levels (0, 1, 2) in an implementation that doesn't take\n      // explicit embedding into account, we can build up the order on\n      // the fly, without following the level-based algorithm.\n      var order = [], m;\n      for (var i$7 = 0; i$7 < len;) {\n        if (countsAsLeft.test(types[i$7])) {\n          var start = i$7;\n          for (++i$7; i$7 < len && countsAsLeft.test(types[i$7]); ++i$7) {}\n          order.push(new BidiSpan(0, start, i$7));\n        } else {\n          var pos = i$7, at = order.length, isRTL = direction == \"rtl\" ? 1 : 0;\n          for (++i$7; i$7 < len && types[i$7] != \"L\"; ++i$7) {}\n          for (var j$2 = pos; j$2 < i$7;) {\n            if (countsAsNum.test(types[j$2])) {\n              if (pos < j$2) { order.splice(at, 0, new BidiSpan(1, pos, j$2)); at += isRTL; }\n              var nstart = j$2;\n              for (++j$2; j$2 < i$7 && countsAsNum.test(types[j$2]); ++j$2) {}\n              order.splice(at, 0, new BidiSpan(2, nstart, j$2));\n              at += isRTL;\n              pos = j$2;\n            } else { ++j$2; }\n          }\n          if (pos < i$7) { order.splice(at, 0, new BidiSpan(1, pos, i$7)); }\n        }\n      }\n      if (direction == \"ltr\") {\n        if (order[0].level == 1 && (m = str.match(/^\\s+/))) {\n          order[0].from = m[0].length;\n          order.unshift(new BidiSpan(0, 0, m[0].length));\n        }\n        if (lst(order).level == 1 && (m = str.match(/\\s+$/))) {\n          lst(order).to -= m[0].length;\n          order.push(new BidiSpan(0, len - m[0].length, len));\n        }\n      }\n\n      return direction == \"rtl\" ? order.reverse() : order\n    }\n  })();\n\n  // Get the bidi ordering for the given line (and cache it). Returns\n  // false for lines that are fully left-to-right, and an array of\n  // BidiSpan objects otherwise.\n  function getOrder(line, direction) {\n    var order = line.order;\n    if (order == null) { order = line.order = bidiOrdering(line.text, direction); }\n    return order\n  }\n\n  // EVENT HANDLING\n\n  // Lightweight event framework. on/off also work on DOM nodes,\n  // registering native DOM handlers.\n\n  var noHandlers = [];\n\n  var on = function(emitter, type, f) {\n    if (emitter.addEventListener) {\n      emitter.addEventListener(type, f, false);\n    } else if (emitter.attachEvent) {\n      emitter.attachEvent(\"on\" + type, f);\n    } else {\n      var map = emitter._handlers || (emitter._handlers = {});\n      map[type] = (map[type] || noHandlers).concat(f);\n    }\n  };\n\n  function getHandlers(emitter, type) {\n    return emitter._handlers && emitter._handlers[type] || noHandlers\n  }\n\n  function off(emitter, type, f) {\n    if (emitter.removeEventListener) {\n      emitter.removeEventListener(type, f, false);\n    } else if (emitter.detachEvent) {\n      emitter.detachEvent(\"on\" + type, f);\n    } else {\n      var map = emitter._handlers, arr = map && map[type];\n      if (arr) {\n        var index = indexOf(arr, f);\n        if (index > -1)\n          { map[type] = arr.slice(0, index).concat(arr.slice(index + 1)); }\n      }\n    }\n  }\n\n  function signal(emitter, type /*, values...*/) {\n    var handlers = getHandlers(emitter, type);\n    if (!handlers.length) { return }\n    var args = Array.prototype.slice.call(arguments, 2);\n    for (var i = 0; i < handlers.length; ++i) { handlers[i].apply(null, args); }\n  }\n\n  // The DOM events that CodeMirror handles can be overridden by\n  // registering a (non-DOM) handler on the editor for the event name,\n  // and preventDefault-ing the event in that handler.\n  function signalDOMEvent(cm, e, override) {\n    if (typeof e == \"string\")\n      { e = {type: e, preventDefault: function() { this.defaultPrevented = true; }}; }\n    signal(cm, override || e.type, cm, e);\n    return e_defaultPrevented(e) || e.codemirrorIgnore\n  }\n\n  function signalCursorActivity(cm) {\n    var arr = cm._handlers && cm._handlers.cursorActivity;\n    if (!arr) { return }\n    var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []);\n    for (var i = 0; i < arr.length; ++i) { if (indexOf(set, arr[i]) == -1)\n      { set.push(arr[i]); } }\n  }\n\n  function hasHandler(emitter, type) {\n    return getHandlers(emitter, type).length > 0\n  }\n\n  // Add on and off methods to a constructor's prototype, to make\n  // registering events on such objects more convenient.\n  function eventMixin(ctor) {\n    ctor.prototype.on = function(type, f) {on(this, type, f);};\n    ctor.prototype.off = function(type, f) {off(this, type, f);};\n  }\n\n  // Due to the fact that we still support jurassic IE versions, some\n  // compatibility wrappers are needed.\n\n  function e_preventDefault(e) {\n    if (e.preventDefault) { e.preventDefault(); }\n    else { e.returnValue = false; }\n  }\n  function e_stopPropagation(e) {\n    if (e.stopPropagation) { e.stopPropagation(); }\n    else { e.cancelBubble = true; }\n  }\n  function e_defaultPrevented(e) {\n    return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false\n  }\n  function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}\n\n  function e_target(e) {return e.target || e.srcElement}\n  function e_button(e) {\n    var b = e.which;\n    if (b == null) {\n      if (e.button & 1) { b = 1; }\n      else if (e.button & 2) { b = 3; }\n      else if (e.button & 4) { b = 2; }\n    }\n    if (mac && e.ctrlKey && b == 1) { b = 3; }\n    return b\n  }\n\n  // Detect drag-and-drop\n  var dragAndDrop = function() {\n    // There is *some* kind of drag-and-drop support in IE6-8, but I\n    // couldn't get it to work yet.\n    if (ie && ie_version < 9) { return false }\n    var div = elt('div');\n    return \"draggable\" in div || \"dragDrop\" in div\n  }();\n\n  var zwspSupported;\n  function zeroWidthElement(measure) {\n    if (zwspSupported == null) {\n      var test = elt(\"span\", \"\\u200b\");\n      removeChildrenAndAdd(measure, elt(\"span\", [test, document.createTextNode(\"x\")]));\n      if (measure.firstChild.offsetHeight != 0)\n        { zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8); }\n    }\n    var node = zwspSupported ? elt(\"span\", \"\\u200b\") :\n      elt(\"span\", \"\\u00a0\", null, \"display: inline-block; width: 1px; margin-right: -1px\");\n    node.setAttribute(\"cm-text\", \"\");\n    return node\n  }\n\n  // Feature-detect IE's crummy client rect reporting for bidi text\n  var badBidiRects;\n  function hasBadBidiRects(measure) {\n    if (badBidiRects != null) { return badBidiRects }\n    var txt = removeChildrenAndAdd(measure, document.createTextNode(\"A\\u062eA\"));\n    var r0 = range(txt, 0, 1).getBoundingClientRect();\n    var r1 = range(txt, 1, 2).getBoundingClientRect();\n    removeChildren(measure);\n    if (!r0 || r0.left == r0.right) { return false } // Safari returns null in some cases (#2780)\n    return badBidiRects = (r1.right - r0.right < 3)\n  }\n\n  // See if \"\".split is the broken IE version, if so, provide an\n  // alternative way to split lines.\n  var splitLinesAuto = \"\\n\\nb\".split(/\\n/).length != 3 ? function (string) {\n    var pos = 0, result = [], l = string.length;\n    while (pos <= l) {\n      var nl = string.indexOf(\"\\n\", pos);\n      if (nl == -1) { nl = string.length; }\n      var line = string.slice(pos, string.charAt(nl - 1) == \"\\r\" ? nl - 1 : nl);\n      var rt = line.indexOf(\"\\r\");\n      if (rt != -1) {\n        result.push(line.slice(0, rt));\n        pos += rt + 1;\n      } else {\n        result.push(line);\n        pos = nl + 1;\n      }\n    }\n    return result\n  } : function (string) { return string.split(/\\r\\n?|\\n/); };\n\n  var hasSelection = window.getSelection ? function (te) {\n    try { return te.selectionStart != te.selectionEnd }\n    catch(e) { return false }\n  } : function (te) {\n    var range;\n    try {range = te.ownerDocument.selection.createRange();}\n    catch(e) {}\n    if (!range || range.parentElement() != te) { return false }\n    return range.compareEndPoints(\"StartToEnd\", range) != 0\n  };\n\n  var hasCopyEvent = (function () {\n    var e = elt(\"div\");\n    if (\"oncopy\" in e) { return true }\n    e.setAttribute(\"oncopy\", \"return;\");\n    return typeof e.oncopy == \"function\"\n  })();\n\n  var badZoomedRects = null;\n  function hasBadZoomedRects(measure) {\n    if (badZoomedRects != null) { return badZoomedRects }\n    var node = removeChildrenAndAdd(measure, elt(\"span\", \"x\"));\n    var normal = node.getBoundingClientRect();\n    var fromRange = range(node, 0, 1).getBoundingClientRect();\n    return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1\n  }\n\n  // Known modes, by name and by MIME\n  var modes = {}, mimeModes = {};\n\n  // Extra arguments are stored as the mode's dependencies, which is\n  // used by (legacy) mechanisms like loadmode.js to automatically\n  // load a mode. (Preferred mechanism is the require/define calls.)\n  function defineMode(name, mode) {\n    if (arguments.length > 2)\n      { mode.dependencies = Array.prototype.slice.call(arguments, 2); }\n    modes[name] = mode;\n  }\n\n  function defineMIME(mime, spec) {\n    mimeModes[mime] = spec;\n  }\n\n  // Given a MIME type, a {name, ...options} config object, or a name\n  // string, return a mode config object.\n  function resolveMode(spec) {\n    if (typeof spec == \"string\" && mimeModes.hasOwnProperty(spec)) {\n      spec = mimeModes[spec];\n    } else if (spec && typeof spec.name == \"string\" && mimeModes.hasOwnProperty(spec.name)) {\n      var found = mimeModes[spec.name];\n      if (typeof found == \"string\") { found = {name: found}; }\n      spec = createObj(found, spec);\n      spec.name = found.name;\n    } else if (typeof spec == \"string\" && /^[\\w\\-]+\\/[\\w\\-]+\\+xml$/.test(spec)) {\n      return resolveMode(\"application/xml\")\n    } else if (typeof spec == \"string\" && /^[\\w\\-]+\\/[\\w\\-]+\\+json$/.test(spec)) {\n      return resolveMode(\"application/json\")\n    }\n    if (typeof spec == \"string\") { return {name: spec} }\n    else { return spec || {name: \"null\"} }\n  }\n\n  // Given a mode spec (anything that resolveMode accepts), find and\n  // initialize an actual mode object.\n  function getMode(options, spec) {\n    spec = resolveMode(spec);\n    var mfactory = modes[spec.name];\n    if (!mfactory) { return getMode(options, \"text/plain\") }\n    var modeObj = mfactory(options, spec);\n    if (modeExtensions.hasOwnProperty(spec.name)) {\n      var exts = modeExtensions[spec.name];\n      for (var prop in exts) {\n        if (!exts.hasOwnProperty(prop)) { continue }\n        if (modeObj.hasOwnProperty(prop)) { modeObj[\"_\" + prop] = modeObj[prop]; }\n        modeObj[prop] = exts[prop];\n      }\n    }\n    modeObj.name = spec.name;\n    if (spec.helperType) { modeObj.helperType = spec.helperType; }\n    if (spec.modeProps) { for (var prop$1 in spec.modeProps)\n      { modeObj[prop$1] = spec.modeProps[prop$1]; } }\n\n    return modeObj\n  }\n\n  // This can be used to attach properties to mode objects from\n  // outside the actual mode definition.\n  var modeExtensions = {};\n  function extendMode(mode, properties) {\n    var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});\n    copyObj(properties, exts);\n  }\n\n  function copyState(mode, state) {\n    if (state === true) { return state }\n    if (mode.copyState) { return mode.copyState(state) }\n    var nstate = {};\n    for (var n in state) {\n      var val = state[n];\n      if (val instanceof Array) { val = val.concat([]); }\n      nstate[n] = val;\n    }\n    return nstate\n  }\n\n  // Given a mode and a state (for that mode), find the inner mode and\n  // state at the position that the state refers to.\n  function innerMode(mode, state) {\n    var info;\n    while (mode.innerMode) {\n      info = mode.innerMode(state);\n      if (!info || info.mode == mode) { break }\n      state = info.state;\n      mode = info.mode;\n    }\n    return info || {mode: mode, state: state}\n  }\n\n  function startState(mode, a1, a2) {\n    return mode.startState ? mode.startState(a1, a2) : true\n  }\n\n  // STRING STREAM\n\n  // Fed to the mode parsers, provides helper functions to make\n  // parsers more succinct.\n\n  var StringStream = function(string, tabSize, lineOracle) {\n    this.pos = this.start = 0;\n    this.string = string;\n    this.tabSize = tabSize || 8;\n    this.lastColumnPos = this.lastColumnValue = 0;\n    this.lineStart = 0;\n    this.lineOracle = lineOracle;\n  };\n\n  StringStream.prototype.eol = function () {return this.pos >= this.string.length};\n  StringStream.prototype.sol = function () {return this.pos == this.lineStart};\n  StringStream.prototype.peek = function () {return this.string.charAt(this.pos) || undefined};\n  StringStream.prototype.next = function () {\n    if (this.pos < this.string.length)\n      { return this.string.charAt(this.pos++) }\n  };\n  StringStream.prototype.eat = function (match) {\n    var ch = this.string.charAt(this.pos);\n    var ok;\n    if (typeof match == \"string\") { ok = ch == match; }\n    else { ok = ch && (match.test ? match.test(ch) : match(ch)); }\n    if (ok) {++this.pos; return ch}\n  };\n  StringStream.prototype.eatWhile = function (match) {\n    var start = this.pos;\n    while (this.eat(match)){}\n    return this.pos > start\n  };\n  StringStream.prototype.eatSpace = function () {\n    var start = this.pos;\n    while (/[\\s\\u00a0]/.test(this.string.charAt(this.pos))) { ++this.pos; }\n    return this.pos > start\n  };\n  StringStream.prototype.skipToEnd = function () {this.pos = this.string.length;};\n  StringStream.prototype.skipTo = function (ch) {\n    var found = this.string.indexOf(ch, this.pos);\n    if (found > -1) {this.pos = found; return true}\n  };\n  StringStream.prototype.backUp = function (n) {this.pos -= n;};\n  StringStream.prototype.column = function () {\n    if (this.lastColumnPos < this.start) {\n      this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);\n      this.lastColumnPos = this.start;\n    }\n    return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)\n  };\n  StringStream.prototype.indentation = function () {\n    return countColumn(this.string, null, this.tabSize) -\n      (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)\n  };\n  StringStream.prototype.match = function (pattern, consume, caseInsensitive) {\n    if (typeof pattern == \"string\") {\n      var cased = function (str) { return caseInsensitive ? str.toLowerCase() : str; };\n      var substr = this.string.substr(this.pos, pattern.length);\n      if (cased(substr) == cased(pattern)) {\n        if (consume !== false) { this.pos += pattern.length; }\n        return true\n      }\n    } else {\n      var match = this.string.slice(this.pos).match(pattern);\n      if (match && match.index > 0) { return null }\n      if (match && consume !== false) { this.pos += match[0].length; }\n      return match\n    }\n  };\n  StringStream.prototype.current = function (){return this.string.slice(this.start, this.pos)};\n  StringStream.prototype.hideFirstChars = function (n, inner) {\n    this.lineStart += n;\n    try { return inner() }\n    finally { this.lineStart -= n; }\n  };\n  StringStream.prototype.lookAhead = function (n) {\n    var oracle = this.lineOracle;\n    return oracle && oracle.lookAhead(n)\n  };\n  StringStream.prototype.baseToken = function () {\n    var oracle = this.lineOracle;\n    return oracle && oracle.baseToken(this.pos)\n  };\n\n  // Find the line object corresponding to the given line number.\n  function getLine(doc, n) {\n    n -= doc.first;\n    if (n < 0 || n >= doc.size) { throw new Error(\"There is no line \" + (n + doc.first) + \" in the document.\") }\n    var chunk = doc;\n    while (!chunk.lines) {\n      for (var i = 0;; ++i) {\n        var child = chunk.children[i], sz = child.chunkSize();\n        if (n < sz) { chunk = child; break }\n        n -= sz;\n      }\n    }\n    return chunk.lines[n]\n  }\n\n  // Get the part of a document between two positions, as an array of\n  // strings.\n  function getBetween(doc, start, end) {\n    var out = [], n = start.line;\n    doc.iter(start.line, end.line + 1, function (line) {\n      var text = line.text;\n      if (n == end.line) { text = text.slice(0, end.ch); }\n      if (n == start.line) { text = text.slice(start.ch); }\n      out.push(text);\n      ++n;\n    });\n    return out\n  }\n  // Get the lines between from and to, as array of strings.\n  function getLines(doc, from, to) {\n    var out = [];\n    doc.iter(from, to, function (line) { out.push(line.text); }); // iter aborts when callback returns truthy value\n    return out\n  }\n\n  // Update the height of a line, propagating the height change\n  // upwards to parent nodes.\n  function updateLineHeight(line, height) {\n    var diff = height - line.height;\n    if (diff) { for (var n = line; n; n = n.parent) { n.height += diff; } }\n  }\n\n  // Given a line object, find its line number by walking up through\n  // its parent links.\n  function lineNo(line) {\n    if (line.parent == null) { return null }\n    var cur = line.parent, no = indexOf(cur.lines, line);\n    for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {\n      for (var i = 0;; ++i) {\n        if (chunk.children[i] == cur) { break }\n        no += chunk.children[i].chunkSize();\n      }\n    }\n    return no + cur.first\n  }\n\n  // Find the line at the given vertical position, using the height\n  // information in the document tree.\n  function lineAtHeight(chunk, h) {\n    var n = chunk.first;\n    outer: do {\n      for (var i$1 = 0; i$1 < chunk.children.length; ++i$1) {\n        var child = chunk.children[i$1], ch = child.height;\n        if (h < ch) { chunk = child; continue outer }\n        h -= ch;\n        n += child.chunkSize();\n      }\n      return n\n    } while (!chunk.lines)\n    var i = 0;\n    for (; i < chunk.lines.length; ++i) {\n      var line = chunk.lines[i], lh = line.height;\n      if (h < lh) { break }\n      h -= lh;\n    }\n    return n + i\n  }\n\n  function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size}\n\n  function lineNumberFor(options, i) {\n    return String(options.lineNumberFormatter(i + options.firstLineNumber))\n  }\n\n  // A Pos instance represents a position within the text.\n  function Pos(line, ch, sticky) {\n    if ( sticky === void 0 ) sticky = null;\n\n    if (!(this instanceof Pos)) { return new Pos(line, ch, sticky) }\n    this.line = line;\n    this.ch = ch;\n    this.sticky = sticky;\n  }\n\n  // Compare two positions, return 0 if they are the same, a negative\n  // number when a is less, and a positive number otherwise.\n  function cmp(a, b) { return a.line - b.line || a.ch - b.ch }\n\n  function equalCursorPos(a, b) { return a.sticky == b.sticky && cmp(a, b) == 0 }\n\n  function copyPos(x) {return Pos(x.line, x.ch)}\n  function maxPos(a, b) { return cmp(a, b) < 0 ? b : a }\n  function minPos(a, b) { return cmp(a, b) < 0 ? a : b }\n\n  // Most of the external API clips given positions to make sure they\n  // actually exist within the document.\n  function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1))}\n  function clipPos(doc, pos) {\n    if (pos.line < doc.first) { return Pos(doc.first, 0) }\n    var last = doc.first + doc.size - 1;\n    if (pos.line > last) { return Pos(last, getLine(doc, last).text.length) }\n    return clipToLen(pos, getLine(doc, pos.line).text.length)\n  }\n  function clipToLen(pos, linelen) {\n    var ch = pos.ch;\n    if (ch == null || ch > linelen) { return Pos(pos.line, linelen) }\n    else if (ch < 0) { return Pos(pos.line, 0) }\n    else { return pos }\n  }\n  function clipPosArray(doc, array) {\n    var out = [];\n    for (var i = 0; i < array.length; i++) { out[i] = clipPos(doc, array[i]); }\n    return out\n  }\n\n  var SavedContext = function(state, lookAhead) {\n    this.state = state;\n    this.lookAhead = lookAhead;\n  };\n\n  var Context = function(doc, state, line, lookAhead) {\n    this.state = state;\n    this.doc = doc;\n    this.line = line;\n    this.maxLookAhead = lookAhead || 0;\n    this.baseTokens = null;\n    this.baseTokenPos = 1;\n  };\n\n  Context.prototype.lookAhead = function (n) {\n    var line = this.doc.getLine(this.line + n);\n    if (line != null && n > this.maxLookAhead) { this.maxLookAhead = n; }\n    return line\n  };\n\n  Context.prototype.baseToken = function (n) {\n    if (!this.baseTokens) { return null }\n    while (this.baseTokens[this.baseTokenPos] <= n)\n      { this.baseTokenPos += 2; }\n    var type = this.baseTokens[this.baseTokenPos + 1];\n    return {type: type && type.replace(/( |^)overlay .*/, \"\"),\n            size: this.baseTokens[this.baseTokenPos] - n}\n  };\n\n  Context.prototype.nextLine = function () {\n    this.line++;\n    if (this.maxLookAhead > 0) { this.maxLookAhead--; }\n  };\n\n  Context.fromSaved = function (doc, saved, line) {\n    if (saved instanceof SavedContext)\n      { return new Context(doc, copyState(doc.mode, saved.state), line, saved.lookAhead) }\n    else\n      { return new Context(doc, copyState(doc.mode, saved), line) }\n  };\n\n  Context.prototype.save = function (copy) {\n    var state = copy !== false ? copyState(this.doc.mode, this.state) : this.state;\n    return this.maxLookAhead > 0 ? new SavedContext(state, this.maxLookAhead) : state\n  };\n\n\n  // Compute a style array (an array starting with a mode generation\n  // -- for invalidation -- followed by pairs of end positions and\n  // style strings), which is used to highlight the tokens on the\n  // line.\n  function highlightLine(cm, line, context, forceToEnd) {\n    // A styles array always starts with a number identifying the\n    // mode/overlays that it is based on (for easy invalidation).\n    var st = [cm.state.modeGen], lineClasses = {};\n    // Compute the base array of styles\n    runMode(cm, line.text, cm.doc.mode, context, function (end, style) { return st.push(end, style); },\n            lineClasses, forceToEnd);\n    var state = context.state;\n\n    // Run overlays, adjust style array.\n    var loop = function ( o ) {\n      context.baseTokens = st;\n      var overlay = cm.state.overlays[o], i = 1, at = 0;\n      context.state = true;\n      runMode(cm, line.text, overlay.mode, context, function (end, style) {\n        var start = i;\n        // Ensure there's a token end at the current position, and that i points at it\n        while (at < end) {\n          var i_end = st[i];\n          if (i_end > end)\n            { st.splice(i, 1, end, st[i+1], i_end); }\n          i += 2;\n          at = Math.min(end, i_end);\n        }\n        if (!style) { return }\n        if (overlay.opaque) {\n          st.splice(start, i - start, end, \"overlay \" + style);\n          i = start + 2;\n        } else {\n          for (; start < i; start += 2) {\n            var cur = st[start+1];\n            st[start+1] = (cur ? cur + \" \" : \"\") + \"overlay \" + style;\n          }\n        }\n      }, lineClasses);\n      context.state = state;\n      context.baseTokens = null;\n      context.baseTokenPos = 1;\n    };\n\n    for (var o = 0; o < cm.state.overlays.length; ++o) loop( o );\n\n    return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null}\n  }\n\n  function getLineStyles(cm, line, updateFrontier) {\n    if (!line.styles || line.styles[0] != cm.state.modeGen) {\n      var context = getContextBefore(cm, lineNo(line));\n      var resetState = line.text.length > cm.options.maxHighlightLength && copyState(cm.doc.mode, context.state);\n      var result = highlightLine(cm, line, context);\n      if (resetState) { context.state = resetState; }\n      line.stateAfter = context.save(!resetState);\n      line.styles = result.styles;\n      if (result.classes) { line.styleClasses = result.classes; }\n      else if (line.styleClasses) { line.styleClasses = null; }\n      if (updateFrontier === cm.doc.highlightFrontier)\n        { cm.doc.modeFrontier = Math.max(cm.doc.modeFrontier, ++cm.doc.highlightFrontier); }\n    }\n    return line.styles\n  }\n\n  function getContextBefore(cm, n, precise) {\n    var doc = cm.doc, display = cm.display;\n    if (!doc.mode.startState) { return new Context(doc, true, n) }\n    var start = findStartLine(cm, n, precise);\n    var saved = start > doc.first && getLine(doc, start - 1).stateAfter;\n    var context = saved ? Context.fromSaved(doc, saved, start) : new Context(doc, startState(doc.mode), start);\n\n    doc.iter(start, n, function (line) {\n      processLine(cm, line.text, context);\n      var pos = context.line;\n      line.stateAfter = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo ? context.save() : null;\n      context.nextLine();\n    });\n    if (precise) { doc.modeFrontier = context.line; }\n    return context\n  }\n\n  // Lightweight form of highlight -- proceed over this line and\n  // update state, but don't save a style array. Used for lines that\n  // aren't currently visible.\n  function processLine(cm, text, context, startAt) {\n    var mode = cm.doc.mode;\n    var stream = new StringStream(text, cm.options.tabSize, context);\n    stream.start = stream.pos = startAt || 0;\n    if (text == \"\") { callBlankLine(mode, context.state); }\n    while (!stream.eol()) {\n      readToken(mode, stream, context.state);\n      stream.start = stream.pos;\n    }\n  }\n\n  function callBlankLine(mode, state) {\n    if (mode.blankLine) { return mode.blankLine(state) }\n    if (!mode.innerMode) { return }\n    var inner = innerMode(mode, state);\n    if (inner.mode.blankLine) { return inner.mode.blankLine(inner.state) }\n  }\n\n  function readToken(mode, stream, state, inner) {\n    for (var i = 0; i < 10; i++) {\n      if (inner) { inner[0] = innerMode(mode, state).mode; }\n      var style = mode.token(stream, state);\n      if (stream.pos > stream.start) { return style }\n    }\n    throw new Error(\"Mode \" + mode.name + \" failed to advance stream.\")\n  }\n\n  var Token = function(stream, type, state) {\n    this.start = stream.start; this.end = stream.pos;\n    this.string = stream.current();\n    this.type = type || null;\n    this.state = state;\n  };\n\n  // Utility for getTokenAt and getLineTokens\n  function takeToken(cm, pos, precise, asArray) {\n    var doc = cm.doc, mode = doc.mode, style;\n    pos = clipPos(doc, pos);\n    var line = getLine(doc, pos.line), context = getContextBefore(cm, pos.line, precise);\n    var stream = new StringStream(line.text, cm.options.tabSize, context), tokens;\n    if (asArray) { tokens = []; }\n    while ((asArray || stream.pos < pos.ch) && !stream.eol()) {\n      stream.start = stream.pos;\n      style = readToken(mode, stream, context.state);\n      if (asArray) { tokens.push(new Token(stream, style, copyState(doc.mode, context.state))); }\n    }\n    return asArray ? tokens : new Token(stream, style, context.state)\n  }\n\n  function extractLineClasses(type, output) {\n    if (type) { for (;;) {\n      var lineClass = type.match(/(?:^|\\s+)line-(background-)?(\\S+)/);\n      if (!lineClass) { break }\n      type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length);\n      var prop = lineClass[1] ? \"bgClass\" : \"textClass\";\n      if (output[prop] == null)\n        { output[prop] = lineClass[2]; }\n      else if (!(new RegExp(\"(?:^|\\\\s)\" + lineClass[2] + \"(?:$|\\\\s)\")).test(output[prop]))\n        { output[prop] += \" \" + lineClass[2]; }\n    } }\n    return type\n  }\n\n  // Run the given mode's parser over a line, calling f for each token.\n  function runMode(cm, text, mode, context, f, lineClasses, forceToEnd) {\n    var flattenSpans = mode.flattenSpans;\n    if (flattenSpans == null) { flattenSpans = cm.options.flattenSpans; }\n    var curStart = 0, curStyle = null;\n    var stream = new StringStream(text, cm.options.tabSize, context), style;\n    var inner = cm.options.addModeClass && [null];\n    if (text == \"\") { extractLineClasses(callBlankLine(mode, context.state), lineClasses); }\n    while (!stream.eol()) {\n      if (stream.pos > cm.options.maxHighlightLength) {\n        flattenSpans = false;\n        if (forceToEnd) { processLine(cm, text, context, stream.pos); }\n        stream.pos = text.length;\n        style = null;\n      } else {\n        style = extractLineClasses(readToken(mode, stream, context.state, inner), lineClasses);\n      }\n      if (inner) {\n        var mName = inner[0].name;\n        if (mName) { style = \"m-\" + (style ? mName + \" \" + style : mName); }\n      }\n      if (!flattenSpans || curStyle != style) {\n        while (curStart < stream.start) {\n          curStart = Math.min(stream.start, curStart + 5000);\n          f(curStart, curStyle);\n        }\n        curStyle = style;\n      }\n      stream.start = stream.pos;\n    }\n    while (curStart < stream.pos) {\n      // Webkit seems to refuse to render text nodes longer than 57444\n      // characters, and returns inaccurate measurements in nodes\n      // starting around 5000 chars.\n      var pos = Math.min(stream.pos, curStart + 5000);\n      f(pos, curStyle);\n      curStart = pos;\n    }\n  }\n\n  // Finds the line to start with when starting a parse. Tries to\n  // find a line with a stateAfter, so that it can start with a\n  // valid state. If that fails, it returns the line with the\n  // smallest indentation, which tends to need the least context to\n  // parse correctly.\n  function findStartLine(cm, n, precise) {\n    var minindent, minline, doc = cm.doc;\n    var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);\n    for (var search = n; search > lim; --search) {\n      if (search <= doc.first) { return doc.first }\n      var line = getLine(doc, search - 1), after = line.stateAfter;\n      if (after && (!precise || search + (after instanceof SavedContext ? after.lookAhead : 0) <= doc.modeFrontier))\n        { return search }\n      var indented = countColumn(line.text, null, cm.options.tabSize);\n      if (minline == null || minindent > indented) {\n        minline = search - 1;\n        minindent = indented;\n      }\n    }\n    return minline\n  }\n\n  function retreatFrontier(doc, n) {\n    doc.modeFrontier = Math.min(doc.modeFrontier, n);\n    if (doc.highlightFrontier < n - 10) { return }\n    var start = doc.first;\n    for (var line = n - 1; line > start; line--) {\n      var saved = getLine(doc, line).stateAfter;\n      // change is on 3\n      // state on line 1 looked ahead 2 -- so saw 3\n      // test 1 + 2 < 3 should cover this\n      if (saved && (!(saved instanceof SavedContext) || line + saved.lookAhead < n)) {\n        start = line + 1;\n        break\n      }\n    }\n    doc.highlightFrontier = Math.min(doc.highlightFrontier, start);\n  }\n\n  // Optimize some code when these features are not used.\n  var sawReadOnlySpans = false, sawCollapsedSpans = false;\n\n  function seeReadOnlySpans() {\n    sawReadOnlySpans = true;\n  }\n\n  function seeCollapsedSpans() {\n    sawCollapsedSpans = true;\n  }\n\n  // TEXTMARKER SPANS\n\n  function MarkedSpan(marker, from, to) {\n    this.marker = marker;\n    this.from = from; this.to = to;\n  }\n\n  // Search an array of spans for a span matching the given marker.\n  function getMarkedSpanFor(spans, marker) {\n    if (spans) { for (var i = 0; i < spans.length; ++i) {\n      var span = spans[i];\n      if (span.marker == marker) { return span }\n    } }\n  }\n\n  // Remove a span from an array, returning undefined if no spans are\n  // left (we don't store arrays for lines without spans).\n  function removeMarkedSpan(spans, span) {\n    var r;\n    for (var i = 0; i < spans.length; ++i)\n      { if (spans[i] != span) { (r || (r = [])).push(spans[i]); } }\n    return r\n  }\n\n  // Add a span to a line.\n  function addMarkedSpan(line, span, op) {\n    var inThisOp = op && window.WeakSet && (op.markedSpans || (op.markedSpans = new WeakSet));\n    if (inThisOp && inThisOp.has(line.markedSpans)) {\n      line.markedSpans.push(span);\n    } else {\n      line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];\n      if (inThisOp) { inThisOp.add(line.markedSpans); }\n    }\n    span.marker.attachLine(line);\n  }\n\n  // Used for the algorithm that adjusts markers for a change in the\n  // document. These functions cut an array of spans at a given\n  // character position, returning an array of remaining chunks (or\n  // undefined if nothing remains).\n  function markedSpansBefore(old, startCh, isInsert) {\n    var nw;\n    if (old) { for (var i = 0; i < old.length; ++i) {\n      var span = old[i], marker = span.marker;\n      var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);\n      if (startsBefore || span.from == startCh && marker.type == \"bookmark\" && (!isInsert || !span.marker.insertLeft)) {\n        var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh)\n        ;(nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to));\n      }\n    } }\n    return nw\n  }\n  function markedSpansAfter(old, endCh, isInsert) {\n    var nw;\n    if (old) { for (var i = 0; i < old.length; ++i) {\n      var span = old[i], marker = span.marker;\n      var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);\n      if (endsAfter || span.from == endCh && marker.type == \"bookmark\" && (!isInsert || span.marker.insertLeft)) {\n        var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh)\n        ;(nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,\n                                              span.to == null ? null : span.to - endCh));\n      }\n    } }\n    return nw\n  }\n\n  // Given a change object, compute the new set of marker spans that\n  // cover the line in which the change took place. Removes spans\n  // entirely within the change, reconnects spans belonging to the\n  // same marker that appear on both sides of the change, and cuts off\n  // spans partially within the change. Returns an array of span\n  // arrays with one element for each line in (after) the change.\n  function stretchSpansOverChange(doc, change) {\n    if (change.full) { return null }\n    var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;\n    var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;\n    if (!oldFirst && !oldLast) { return null }\n\n    var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0;\n    // Get the spans that 'stick out' on both sides\n    var first = markedSpansBefore(oldFirst, startCh, isInsert);\n    var last = markedSpansAfter(oldLast, endCh, isInsert);\n\n    // Next, merge those two ends\n    var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0);\n    if (first) {\n      // Fix up .to properties of first\n      for (var i = 0; i < first.length; ++i) {\n        var span = first[i];\n        if (span.to == null) {\n          var found = getMarkedSpanFor(last, span.marker);\n          if (!found) { span.to = startCh; }\n          else if (sameLine) { span.to = found.to == null ? null : found.to + offset; }\n        }\n      }\n    }\n    if (last) {\n      // Fix up .from in last (or move them into first in case of sameLine)\n      for (var i$1 = 0; i$1 < last.length; ++i$1) {\n        var span$1 = last[i$1];\n        if (span$1.to != null) { span$1.to += offset; }\n        if (span$1.from == null) {\n          var found$1 = getMarkedSpanFor(first, span$1.marker);\n          if (!found$1) {\n            span$1.from = offset;\n            if (sameLine) { (first || (first = [])).push(span$1); }\n          }\n        } else {\n          span$1.from += offset;\n          if (sameLine) { (first || (first = [])).push(span$1); }\n        }\n      }\n    }\n    // Make sure we didn't create any zero-length spans\n    if (first) { first = clearEmptySpans(first); }\n    if (last && last != first) { last = clearEmptySpans(last); }\n\n    var newMarkers = [first];\n    if (!sameLine) {\n      // Fill gap with whole-line-spans\n      var gap = change.text.length - 2, gapMarkers;\n      if (gap > 0 && first)\n        { for (var i$2 = 0; i$2 < first.length; ++i$2)\n          { if (first[i$2].to == null)\n            { (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i$2].marker, null, null)); } } }\n      for (var i$3 = 0; i$3 < gap; ++i$3)\n        { newMarkers.push(gapMarkers); }\n      newMarkers.push(last);\n    }\n    return newMarkers\n  }\n\n  // Remove spans that are empty and don't have a clearWhenEmpty\n  // option of false.\n  function clearEmptySpans(spans) {\n    for (var i = 0; i < spans.length; ++i) {\n      var span = spans[i];\n      if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)\n        { spans.splice(i--, 1); }\n    }\n    if (!spans.length) { return null }\n    return spans\n  }\n\n  // Used to 'clip' out readOnly ranges when making a change.\n  function removeReadOnlyRanges(doc, from, to) {\n    var markers = null;\n    doc.iter(from.line, to.line + 1, function (line) {\n      if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {\n        var mark = line.markedSpans[i].marker;\n        if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))\n          { (markers || (markers = [])).push(mark); }\n      } }\n    });\n    if (!markers) { return null }\n    var parts = [{from: from, to: to}];\n    for (var i = 0; i < markers.length; ++i) {\n      var mk = markers[i], m = mk.find(0);\n      for (var j = 0; j < parts.length; ++j) {\n        var p = parts[j];\n        if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) { continue }\n        var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to);\n        if (dfrom < 0 || !mk.inclusiveLeft && !dfrom)\n          { newParts.push({from: p.from, to: m.from}); }\n        if (dto > 0 || !mk.inclusiveRight && !dto)\n          { newParts.push({from: m.to, to: p.to}); }\n        parts.splice.apply(parts, newParts);\n        j += newParts.length - 3;\n      }\n    }\n    return parts\n  }\n\n  // Connect or disconnect spans from a line.\n  function detachMarkedSpans(line) {\n    var spans = line.markedSpans;\n    if (!spans) { return }\n    for (var i = 0; i < spans.length; ++i)\n      { spans[i].marker.detachLine(line); }\n    line.markedSpans = null;\n  }\n  function attachMarkedSpans(line, spans) {\n    if (!spans) { return }\n    for (var i = 0; i < spans.length; ++i)\n      { spans[i].marker.attachLine(line); }\n    line.markedSpans = spans;\n  }\n\n  // Helpers used when computing which overlapping collapsed span\n  // counts as the larger one.\n  function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0 }\n  function extraRight(marker) { return marker.inclusiveRight ? 1 : 0 }\n\n  // Returns a number indicating which of two overlapping collapsed\n  // spans is larger (and thus includes the other). Falls back to\n  // comparing ids when the spans cover exactly the same range.\n  function compareCollapsedMarkers(a, b) {\n    var lenDiff = a.lines.length - b.lines.length;\n    if (lenDiff != 0) { return lenDiff }\n    var aPos = a.find(), bPos = b.find();\n    var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b);\n    if (fromCmp) { return -fromCmp }\n    var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b);\n    if (toCmp) { return toCmp }\n    return b.id - a.id\n  }\n\n  // Find out whether a line ends or starts in a collapsed span. If\n  // so, return the marker for that span.\n  function collapsedSpanAtSide(line, start) {\n    var sps = sawCollapsedSpans && line.markedSpans, found;\n    if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {\n      sp = sps[i];\n      if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&\n          (!found || compareCollapsedMarkers(found, sp.marker) < 0))\n        { found = sp.marker; }\n    } }\n    return found\n  }\n  function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true) }\n  function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false) }\n\n  function collapsedSpanAround(line, ch) {\n    var sps = sawCollapsedSpans && line.markedSpans, found;\n    if (sps) { for (var i = 0; i < sps.length; ++i) {\n      var sp = sps[i];\n      if (sp.marker.collapsed && (sp.from == null || sp.from < ch) && (sp.to == null || sp.to > ch) &&\n          (!found || compareCollapsedMarkers(found, sp.marker) < 0)) { found = sp.marker; }\n    } }\n    return found\n  }\n\n  // Test whether there exists a collapsed span that partially\n  // overlaps (covers the start or end, but not both) of a new span.\n  // Such overlap is not allowed.\n  function conflictingCollapsedRange(doc, lineNo, from, to, marker) {\n    var line = getLine(doc, lineNo);\n    var sps = sawCollapsedSpans && line.markedSpans;\n    if (sps) { for (var i = 0; i < sps.length; ++i) {\n      var sp = sps[i];\n      if (!sp.marker.collapsed) { continue }\n      var found = sp.marker.find(0);\n      var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker);\n      var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker);\n      if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) { continue }\n      if (fromCmp <= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.to, from) >= 0 : cmp(found.to, from) > 0) ||\n          fromCmp >= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.from, to) <= 0 : cmp(found.from, to) < 0))\n        { return true }\n    } }\n  }\n\n  // A visual line is a line as drawn on the screen. Folding, for\n  // example, can cause multiple logical lines to appear on the same\n  // visual line. This finds the start of the visual line that the\n  // given line is part of (usually that is the line itself).\n  function visualLine(line) {\n    var merged;\n    while (merged = collapsedSpanAtStart(line))\n      { line = merged.find(-1, true).line; }\n    return line\n  }\n\n  function visualLineEnd(line) {\n    var merged;\n    while (merged = collapsedSpanAtEnd(line))\n      { line = merged.find(1, true).line; }\n    return line\n  }\n\n  // Returns an array of logical lines that continue the visual line\n  // started by the argument, or undefined if there are no such lines.\n  function visualLineContinued(line) {\n    var merged, lines;\n    while (merged = collapsedSpanAtEnd(line)) {\n      line = merged.find(1, true).line\n      ;(lines || (lines = [])).push(line);\n    }\n    return lines\n  }\n\n  // Get the line number of the start of the visual line that the\n  // given line number is part of.\n  function visualLineNo(doc, lineN) {\n    var line = getLine(doc, lineN), vis = visualLine(line);\n    if (line == vis) { return lineN }\n    return lineNo(vis)\n  }\n\n  // Get the line number of the start of the next visual line after\n  // the given line.\n  function visualLineEndNo(doc, lineN) {\n    if (lineN > doc.lastLine()) { return lineN }\n    var line = getLine(doc, lineN), merged;\n    if (!lineIsHidden(doc, line)) { return lineN }\n    while (merged = collapsedSpanAtEnd(line))\n      { line = merged.find(1, true).line; }\n    return lineNo(line) + 1\n  }\n\n  // Compute whether a line is hidden. Lines count as hidden when they\n  // are part of a visual line that starts with another line, or when\n  // they are entirely covered by collapsed, non-widget span.\n  function lineIsHidden(doc, line) {\n    var sps = sawCollapsedSpans && line.markedSpans;\n    if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {\n      sp = sps[i];\n      if (!sp.marker.collapsed) { continue }\n      if (sp.from == null) { return true }\n      if (sp.marker.widgetNode) { continue }\n      if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))\n        { return true }\n    } }\n  }\n  function lineIsHiddenInner(doc, line, span) {\n    if (span.to == null) {\n      var end = span.marker.find(1, true);\n      return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker))\n    }\n    if (span.marker.inclusiveRight && span.to == line.text.length)\n      { return true }\n    for (var sp = (void 0), i = 0; i < line.markedSpans.length; ++i) {\n      sp = line.markedSpans[i];\n      if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&\n          (sp.to == null || sp.to != span.from) &&\n          (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&\n          lineIsHiddenInner(doc, line, sp)) { return true }\n    }\n  }\n\n  // Find the height above the given line.\n  function heightAtLine(lineObj) {\n    lineObj = visualLine(lineObj);\n\n    var h = 0, chunk = lineObj.parent;\n    for (var i = 0; i < chunk.lines.length; ++i) {\n      var line = chunk.lines[i];\n      if (line == lineObj) { break }\n      else { h += line.height; }\n    }\n    for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {\n      for (var i$1 = 0; i$1 < p.children.length; ++i$1) {\n        var cur = p.children[i$1];\n        if (cur == chunk) { break }\n        else { h += cur.height; }\n      }\n    }\n    return h\n  }\n\n  // Compute the character length of a line, taking into account\n  // collapsed ranges (see markText) that might hide parts, and join\n  // other lines onto it.\n  function lineLength(line) {\n    if (line.height == 0) { return 0 }\n    var len = line.text.length, merged, cur = line;\n    while (merged = collapsedSpanAtStart(cur)) {\n      var found = merged.find(0, true);\n      cur = found.from.line;\n      len += found.from.ch - found.to.ch;\n    }\n    cur = line;\n    while (merged = collapsedSpanAtEnd(cur)) {\n      var found$1 = merged.find(0, true);\n      len -= cur.text.length - found$1.from.ch;\n      cur = found$1.to.line;\n      len += cur.text.length - found$1.to.ch;\n    }\n    return len\n  }\n\n  // Find the longest line in the document.\n  function findMaxLine(cm) {\n    var d = cm.display, doc = cm.doc;\n    d.maxLine = getLine(doc, doc.first);\n    d.maxLineLength = lineLength(d.maxLine);\n    d.maxLineChanged = true;\n    doc.iter(function (line) {\n      var len = lineLength(line);\n      if (len > d.maxLineLength) {\n        d.maxLineLength = len;\n        d.maxLine = line;\n      }\n    });\n  }\n\n  // LINE DATA STRUCTURE\n\n  // Line objects. These hold state related to a line, including\n  // highlighting info (the styles array).\n  var Line = function(text, markedSpans, estimateHeight) {\n    this.text = text;\n    attachMarkedSpans(this, markedSpans);\n    this.height = estimateHeight ? estimateHeight(this) : 1;\n  };\n\n  Line.prototype.lineNo = function () { return lineNo(this) };\n  eventMixin(Line);\n\n  // Change the content (text, markers) of a line. Automatically\n  // invalidates cached information and tries to re-estimate the\n  // line's height.\n  function updateLine(line, text, markedSpans, estimateHeight) {\n    line.text = text;\n    if (line.stateAfter) { line.stateAfter = null; }\n    if (line.styles) { line.styles = null; }\n    if (line.order != null) { line.order = null; }\n    detachMarkedSpans(line);\n    attachMarkedSpans(line, markedSpans);\n    var estHeight = estimateHeight ? estimateHeight(line) : 1;\n    if (estHeight != line.height) { updateLineHeight(line, estHeight); }\n  }\n\n  // Detach a line from the document tree and its markers.\n  function cleanUpLine(line) {\n    line.parent = null;\n    detachMarkedSpans(line);\n  }\n\n  // Convert a style as returned by a mode (either null, or a string\n  // containing one or more styles) to a CSS style. This is cached,\n  // and also looks for line-wide styles.\n  var styleToClassCache = {}, styleToClassCacheWithMode = {};\n  function interpretTokenStyle(style, options) {\n    if (!style || /^\\s*$/.test(style)) { return null }\n    var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;\n    return cache[style] ||\n      (cache[style] = style.replace(/\\S+/g, \"cm-$&\"))\n  }\n\n  // Render the DOM representation of the text of a line. Also builds\n  // up a 'line map', which points at the DOM nodes that represent\n  // specific stretches of text, and is used by the measuring code.\n  // The returned object contains the DOM node, this map, and\n  // information about line-wide styles that were set by the mode.\n  function buildLineContent(cm, lineView) {\n    // The padding-right forces the element to have a 'border', which\n    // is needed on Webkit to be able to get line-level bounding\n    // rectangles for it (in measureChar).\n    var content = eltP(\"span\", null, null, webkit ? \"padding-right: .1px\" : null);\n    var builder = {pre: eltP(\"pre\", [content], \"CodeMirror-line\"), content: content,\n                   col: 0, pos: 0, cm: cm,\n                   trailingSpace: false,\n                   splitSpaces: cm.getOption(\"lineWrapping\")};\n    lineView.measure = {};\n\n    // Iterate over the logical lines that make up this visual line.\n    for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {\n      var line = i ? lineView.rest[i - 1] : lineView.line, order = (void 0);\n      builder.pos = 0;\n      builder.addToken = buildToken;\n      // Optionally wire in some hacks into the token-rendering\n      // algorithm, to deal with browser quirks.\n      if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line, cm.doc.direction)))\n        { builder.addToken = buildTokenBadBidi(builder.addToken, order); }\n      builder.map = [];\n      var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line);\n      insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate));\n      if (line.styleClasses) {\n        if (line.styleClasses.bgClass)\n          { builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || \"\"); }\n        if (line.styleClasses.textClass)\n          { builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || \"\"); }\n      }\n\n      // Ensure at least a single node is present, for measuring.\n      if (builder.map.length == 0)\n        { builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))); }\n\n      // Store the map and a cache object for the current logical line\n      if (i == 0) {\n        lineView.measure.map = builder.map;\n        lineView.measure.cache = {};\n      } else {\n  (lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map)\n        ;(lineView.measure.caches || (lineView.measure.caches = [])).push({});\n      }\n    }\n\n    // See issue #2901\n    if (webkit) {\n      var last = builder.content.lastChild;\n      if (/\\bcm-tab\\b/.test(last.className) || (last.querySelector && last.querySelector(\".cm-tab\")))\n        { builder.content.className = \"cm-tab-wrap-hack\"; }\n    }\n\n    signal(cm, \"renderLine\", cm, lineView.line, builder.pre);\n    if (builder.pre.className)\n      { builder.textClass = joinClasses(builder.pre.className, builder.textClass || \"\"); }\n\n    return builder\n  }\n\n  function defaultSpecialCharPlaceholder(ch) {\n    var token = elt(\"span\", \"\\u2022\", \"cm-invalidchar\");\n    token.title = \"\\\\u\" + ch.charCodeAt(0).toString(16);\n    token.setAttribute(\"aria-label\", token.title);\n    return token\n  }\n\n  // Build up the DOM representation for a single token, and add it to\n  // the line map. Takes care to render special characters separately.\n  function buildToken(builder, text, style, startStyle, endStyle, css, attributes) {\n    if (!text) { return }\n    var displayText = builder.splitSpaces ? splitSpaces(text, builder.trailingSpace) : text;\n    var special = builder.cm.state.specialChars, mustWrap = false;\n    var content;\n    if (!special.test(text)) {\n      builder.col += text.length;\n      content = document.createTextNode(displayText);\n      builder.map.push(builder.pos, builder.pos + text.length, content);\n      if (ie && ie_version < 9) { mustWrap = true; }\n      builder.pos += text.length;\n    } else {\n      content = document.createDocumentFragment();\n      var pos = 0;\n      while (true) {\n        special.lastIndex = pos;\n        var m = special.exec(text);\n        var skipped = m ? m.index - pos : text.length - pos;\n        if (skipped) {\n          var txt = document.createTextNode(displayText.slice(pos, pos + skipped));\n          if (ie && ie_version < 9) { content.appendChild(elt(\"span\", [txt])); }\n          else { content.appendChild(txt); }\n          builder.map.push(builder.pos, builder.pos + skipped, txt);\n          builder.col += skipped;\n          builder.pos += skipped;\n        }\n        if (!m) { break }\n        pos += skipped + 1;\n        var txt$1 = (void 0);\n        if (m[0] == \"\\t\") {\n          var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;\n          txt$1 = content.appendChild(elt(\"span\", spaceStr(tabWidth), \"cm-tab\"));\n          txt$1.setAttribute(\"role\", \"presentation\");\n          txt$1.setAttribute(\"cm-text\", \"\\t\");\n          builder.col += tabWidth;\n        } else if (m[0] == \"\\r\" || m[0] == \"\\n\") {\n          txt$1 = content.appendChild(elt(\"span\", m[0] == \"\\r\" ? \"\\u240d\" : \"\\u2424\", \"cm-invalidchar\"));\n          txt$1.setAttribute(\"cm-text\", m[0]);\n          builder.col += 1;\n        } else {\n          txt$1 = builder.cm.options.specialCharPlaceholder(m[0]);\n          txt$1.setAttribute(\"cm-text\", m[0]);\n          if (ie && ie_version < 9) { content.appendChild(elt(\"span\", [txt$1])); }\n          else { content.appendChild(txt$1); }\n          builder.col += 1;\n        }\n        builder.map.push(builder.pos, builder.pos + 1, txt$1);\n        builder.pos++;\n      }\n    }\n    builder.trailingSpace = displayText.charCodeAt(text.length - 1) == 32;\n    if (style || startStyle || endStyle || mustWrap || css || attributes) {\n      var fullStyle = style || \"\";\n      if (startStyle) { fullStyle += startStyle; }\n      if (endStyle) { fullStyle += endStyle; }\n      var token = elt(\"span\", [content], fullStyle, css);\n      if (attributes) {\n        for (var attr in attributes) { if (attributes.hasOwnProperty(attr) && attr != \"style\" && attr != \"class\")\n          { token.setAttribute(attr, attributes[attr]); } }\n      }\n      return builder.content.appendChild(token)\n    }\n    builder.content.appendChild(content);\n  }\n\n  // Change some spaces to NBSP to prevent the browser from collapsing\n  // trailing spaces at the end of a line when rendering text (issue #1362).\n  function splitSpaces(text, trailingBefore) {\n    if (text.length > 1 && !/  /.test(text)) { return text }\n    var spaceBefore = trailingBefore, result = \"\";\n    for (var i = 0; i < text.length; i++) {\n      var ch = text.charAt(i);\n      if (ch == \" \" && spaceBefore && (i == text.length - 1 || text.charCodeAt(i + 1) == 32))\n        { ch = \"\\u00a0\"; }\n      result += ch;\n      spaceBefore = ch == \" \";\n    }\n    return result\n  }\n\n  // Work around nonsense dimensions being reported for stretches of\n  // right-to-left text.\n  function buildTokenBadBidi(inner, order) {\n    return function (builder, text, style, startStyle, endStyle, css, attributes) {\n      style = style ? style + \" cm-force-border\" : \"cm-force-border\";\n      var start = builder.pos, end = start + text.length;\n      for (;;) {\n        // Find the part that overlaps with the start of this text\n        var part = (void 0);\n        for (var i = 0; i < order.length; i++) {\n          part = order[i];\n          if (part.to > start && part.from <= start) { break }\n        }\n        if (part.to >= end) { return inner(builder, text, style, startStyle, endStyle, css, attributes) }\n        inner(builder, text.slice(0, part.to - start), style, startStyle, null, css, attributes);\n        startStyle = null;\n        text = text.slice(part.to - start);\n        start = part.to;\n      }\n    }\n  }\n\n  function buildCollapsedSpan(builder, size, marker, ignoreWidget) {\n    var widget = !ignoreWidget && marker.widgetNode;\n    if (widget) { builder.map.push(builder.pos, builder.pos + size, widget); }\n    if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) {\n      if (!widget)\n        { widget = builder.content.appendChild(document.createElement(\"span\")); }\n      widget.setAttribute(\"cm-marker\", marker.id);\n    }\n    if (widget) {\n      builder.cm.display.input.setUneditable(widget);\n      builder.content.appendChild(widget);\n    }\n    builder.pos += size;\n    builder.trailingSpace = false;\n  }\n\n  // Outputs a number of spans to make up a line, taking highlighting\n  // and marked text into account.\n  function insertLineContent(line, builder, styles) {\n    var spans = line.markedSpans, allText = line.text, at = 0;\n    if (!spans) {\n      for (var i$1 = 1; i$1 < styles.length; i$1+=2)\n        { builder.addToken(builder, allText.slice(at, at = styles[i$1]), interpretTokenStyle(styles[i$1+1], builder.cm.options)); }\n      return\n    }\n\n    var len = allText.length, pos = 0, i = 1, text = \"\", style, css;\n    var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, collapsed, attributes;\n    for (;;) {\n      if (nextChange == pos) { // Update current marker set\n        spanStyle = spanEndStyle = spanStartStyle = css = \"\";\n        attributes = null;\n        collapsed = null; nextChange = Infinity;\n        var foundBookmarks = [], endStyles = (void 0);\n        for (var j = 0; j < spans.length; ++j) {\n          var sp = spans[j], m = sp.marker;\n          if (m.type == \"bookmark\" && sp.from == pos && m.widgetNode) {\n            foundBookmarks.push(m);\n          } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) {\n            if (sp.to != null && sp.to != pos && nextChange > sp.to) {\n              nextChange = sp.to;\n              spanEndStyle = \"\";\n            }\n            if (m.className) { spanStyle += \" \" + m.className; }\n            if (m.css) { css = (css ? css + \";\" : \"\") + m.css; }\n            if (m.startStyle && sp.from == pos) { spanStartStyle += \" \" + m.startStyle; }\n            if (m.endStyle && sp.to == nextChange) { (endStyles || (endStyles = [])).push(m.endStyle, sp.to); }\n            // support for the old title property\n            // https://github.com/codemirror/CodeMirror/pull/5673\n            if (m.title) { (attributes || (attributes = {})).title = m.title; }\n            if (m.attributes) {\n              for (var attr in m.attributes)\n                { (attributes || (attributes = {}))[attr] = m.attributes[attr]; }\n            }\n            if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0))\n              { collapsed = sp; }\n          } else if (sp.from > pos && nextChange > sp.from) {\n            nextChange = sp.from;\n          }\n        }\n        if (endStyles) { for (var j$1 = 0; j$1 < endStyles.length; j$1 += 2)\n          { if (endStyles[j$1 + 1] == nextChange) { spanEndStyle += \" \" + endStyles[j$1]; } } }\n\n        if (!collapsed || collapsed.from == pos) { for (var j$2 = 0; j$2 < foundBookmarks.length; ++j$2)\n          { buildCollapsedSpan(builder, 0, foundBookmarks[j$2]); } }\n        if (collapsed && (collapsed.from || 0) == pos) {\n          buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,\n                             collapsed.marker, collapsed.from == null);\n          if (collapsed.to == null) { return }\n          if (collapsed.to == pos) { collapsed = false; }\n        }\n      }\n      if (pos >= len) { break }\n\n      var upto = Math.min(len, nextChange);\n      while (true) {\n        if (text) {\n          var end = pos + text.length;\n          if (!collapsed) {\n            var tokenText = end > upto ? text.slice(0, upto - pos) : text;\n            builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,\n                             spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : \"\", css, attributes);\n          }\n          if (end >= upto) {text = text.slice(upto - pos); pos = upto; break}\n          pos = end;\n          spanStartStyle = \"\";\n        }\n        text = allText.slice(at, at = styles[i++]);\n        style = interpretTokenStyle(styles[i++], builder.cm.options);\n      }\n    }\n  }\n\n\n  // These objects are used to represent the visible (currently drawn)\n  // part of the document. A LineView may correspond to multiple\n  // logical lines, if those are connected by collapsed ranges.\n  function LineView(doc, line, lineN) {\n    // The starting line\n    this.line = line;\n    // Continuing lines, if any\n    this.rest = visualLineContinued(line);\n    // Number of logical lines in this visual line\n    this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1;\n    this.node = this.text = null;\n    this.hidden = lineIsHidden(doc, line);\n  }\n\n  // Create a range of LineView objects for the given lines.\n  function buildViewArray(cm, from, to) {\n    var array = [], nextPos;\n    for (var pos = from; pos < to; pos = nextPos) {\n      var view = new LineView(cm.doc, getLine(cm.doc, pos), pos);\n      nextPos = pos + view.size;\n      array.push(view);\n    }\n    return array\n  }\n\n  var operationGroup = null;\n\n  function pushOperation(op) {\n    if (operationGroup) {\n      operationGroup.ops.push(op);\n    } else {\n      op.ownsGroup = operationGroup = {\n        ops: [op],\n        delayedCallbacks: []\n      };\n    }\n  }\n\n  function fireCallbacksForOps(group) {\n    // Calls delayed callbacks and cursorActivity handlers until no\n    // new ones appear\n    var callbacks = group.delayedCallbacks, i = 0;\n    do {\n      for (; i < callbacks.length; i++)\n        { callbacks[i].call(null); }\n      for (var j = 0; j < group.ops.length; j++) {\n        var op = group.ops[j];\n        if (op.cursorActivityHandlers)\n          { while (op.cursorActivityCalled < op.cursorActivityHandlers.length)\n            { op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm); } }\n      }\n    } while (i < callbacks.length)\n  }\n\n  function finishOperation(op, endCb) {\n    var group = op.ownsGroup;\n    if (!group) { return }\n\n    try { fireCallbacksForOps(group); }\n    finally {\n      operationGroup = null;\n      endCb(group);\n    }\n  }\n\n  var orphanDelayedCallbacks = null;\n\n  // Often, we want to signal events at a point where we are in the\n  // middle of some work, but don't want the handler to start calling\n  // other methods on the editor, which might be in an inconsistent\n  // state or simply not expect any other events to happen.\n  // signalLater looks whether there are any handlers, and schedules\n  // them to be executed when the last operation ends, or, if no\n  // operation is active, when a timeout fires.\n  function signalLater(emitter, type /*, values...*/) {\n    var arr = getHandlers(emitter, type);\n    if (!arr.length) { return }\n    var args = Array.prototype.slice.call(arguments, 2), list;\n    if (operationGroup) {\n      list = operationGroup.delayedCallbacks;\n    } else if (orphanDelayedCallbacks) {\n      list = orphanDelayedCallbacks;\n    } else {\n      list = orphanDelayedCallbacks = [];\n      setTimeout(fireOrphanDelayed, 0);\n    }\n    var loop = function ( i ) {\n      list.push(function () { return arr[i].apply(null, args); });\n    };\n\n    for (var i = 0; i < arr.length; ++i)\n      loop( i );\n  }\n\n  function fireOrphanDelayed() {\n    var delayed = orphanDelayedCallbacks;\n    orphanDelayedCallbacks = null;\n    for (var i = 0; i < delayed.length; ++i) { delayed[i](); }\n  }\n\n  // When an aspect of a line changes, a string is added to\n  // lineView.changes. This updates the relevant part of the line's\n  // DOM structure.\n  function updateLineForChanges(cm, lineView, lineN, dims) {\n    for (var j = 0; j < lineView.changes.length; j++) {\n      var type = lineView.changes[j];\n      if (type == \"text\") { updateLineText(cm, lineView); }\n      else if (type == \"gutter\") { updateLineGutter(cm, lineView, lineN, dims); }\n      else if (type == \"class\") { updateLineClasses(cm, lineView); }\n      else if (type == \"widget\") { updateLineWidgets(cm, lineView, dims); }\n    }\n    lineView.changes = null;\n  }\n\n  // Lines with gutter elements, widgets or a background class need to\n  // be wrapped, and have the extra elements added to the wrapper div\n  function ensureLineWrapped(lineView) {\n    if (lineView.node == lineView.text) {\n      lineView.node = elt(\"div\", null, null, \"position: relative\");\n      if (lineView.text.parentNode)\n        { lineView.text.parentNode.replaceChild(lineView.node, lineView.text); }\n      lineView.node.appendChild(lineView.text);\n      if (ie && ie_version < 8) { lineView.node.style.zIndex = 2; }\n    }\n    return lineView.node\n  }\n\n  function updateLineBackground(cm, lineView) {\n    var cls = lineView.bgClass ? lineView.bgClass + \" \" + (lineView.line.bgClass || \"\") : lineView.line.bgClass;\n    if (cls) { cls += \" CodeMirror-linebackground\"; }\n    if (lineView.background) {\n      if (cls) { lineView.background.className = cls; }\n      else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; }\n    } else if (cls) {\n      var wrap = ensureLineWrapped(lineView);\n      lineView.background = wrap.insertBefore(elt(\"div\", null, cls), wrap.firstChild);\n      cm.display.input.setUneditable(lineView.background);\n    }\n  }\n\n  // Wrapper around buildLineContent which will reuse the structure\n  // in display.externalMeasured when possible.\n  function getLineContent(cm, lineView) {\n    var ext = cm.display.externalMeasured;\n    if (ext && ext.line == lineView.line) {\n      cm.display.externalMeasured = null;\n      lineView.measure = ext.measure;\n      return ext.built\n    }\n    return buildLineContent(cm, lineView)\n  }\n\n  // Redraw the line's text. Interacts with the background and text\n  // classes because the mode may output tokens that influence these\n  // classes.\n  function updateLineText(cm, lineView) {\n    var cls = lineView.text.className;\n    var built = getLineContent(cm, lineView);\n    if (lineView.text == lineView.node) { lineView.node = built.pre; }\n    lineView.text.parentNode.replaceChild(built.pre, lineView.text);\n    lineView.text = built.pre;\n    if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {\n      lineView.bgClass = built.bgClass;\n      lineView.textClass = built.textClass;\n      updateLineClasses(cm, lineView);\n    } else if (cls) {\n      lineView.text.className = cls;\n    }\n  }\n\n  function updateLineClasses(cm, lineView) {\n    updateLineBackground(cm, lineView);\n    if (lineView.line.wrapClass)\n      { ensureLineWrapped(lineView).className = lineView.line.wrapClass; }\n    else if (lineView.node != lineView.text)\n      { lineView.node.className = \"\"; }\n    var textClass = lineView.textClass ? lineView.textClass + \" \" + (lineView.line.textClass || \"\") : lineView.line.textClass;\n    lineView.text.className = textClass || \"\";\n  }\n\n  function updateLineGutter(cm, lineView, lineN, dims) {\n    if (lineView.gutter) {\n      lineView.node.removeChild(lineView.gutter);\n      lineView.gutter = null;\n    }\n    if (lineView.gutterBackground) {\n      lineView.node.removeChild(lineView.gutterBackground);\n      lineView.gutterBackground = null;\n    }\n    if (lineView.line.gutterClass) {\n      var wrap = ensureLineWrapped(lineView);\n      lineView.gutterBackground = elt(\"div\", null, \"CodeMirror-gutter-background \" + lineView.line.gutterClass,\n                                      (\"left: \" + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + \"px; width: \" + (dims.gutterTotalWidth) + \"px\"));\n      cm.display.input.setUneditable(lineView.gutterBackground);\n      wrap.insertBefore(lineView.gutterBackground, lineView.text);\n    }\n    var markers = lineView.line.gutterMarkers;\n    if (cm.options.lineNumbers || markers) {\n      var wrap$1 = ensureLineWrapped(lineView);\n      var gutterWrap = lineView.gutter = elt(\"div\", null, \"CodeMirror-gutter-wrapper\", (\"left: \" + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + \"px\"));\n      gutterWrap.setAttribute(\"aria-hidden\", \"true\");\n      cm.display.input.setUneditable(gutterWrap);\n      wrap$1.insertBefore(gutterWrap, lineView.text);\n      if (lineView.line.gutterClass)\n        { gutterWrap.className += \" \" + lineView.line.gutterClass; }\n      if (cm.options.lineNumbers && (!markers || !markers[\"CodeMirror-linenumbers\"]))\n        { lineView.lineNumber = gutterWrap.appendChild(\n          elt(\"div\", lineNumberFor(cm.options, lineN),\n              \"CodeMirror-linenumber CodeMirror-gutter-elt\",\n              (\"left: \" + (dims.gutterLeft[\"CodeMirror-linenumbers\"]) + \"px; width: \" + (cm.display.lineNumInnerWidth) + \"px\"))); }\n      if (markers) { for (var k = 0; k < cm.display.gutterSpecs.length; ++k) {\n        var id = cm.display.gutterSpecs[k].className, found = markers.hasOwnProperty(id) && markers[id];\n        if (found)\n          { gutterWrap.appendChild(elt(\"div\", [found], \"CodeMirror-gutter-elt\",\n                                     (\"left: \" + (dims.gutterLeft[id]) + \"px; width: \" + (dims.gutterWidth[id]) + \"px\"))); }\n      } }\n    }\n  }\n\n  function updateLineWidgets(cm, lineView, dims) {\n    if (lineView.alignable) { lineView.alignable = null; }\n    var isWidget = classTest(\"CodeMirror-linewidget\");\n    for (var node = lineView.node.firstChild, next = (void 0); node; node = next) {\n      next = node.nextSibling;\n      if (isWidget.test(node.className)) { lineView.node.removeChild(node); }\n    }\n    insertLineWidgets(cm, lineView, dims);\n  }\n\n  // Build a line's DOM representation from scratch\n  function buildLineElement(cm, lineView, lineN, dims) {\n    var built = getLineContent(cm, lineView);\n    lineView.text = lineView.node = built.pre;\n    if (built.bgClass) { lineView.bgClass = built.bgClass; }\n    if (built.textClass) { lineView.textClass = built.textClass; }\n\n    updateLineClasses(cm, lineView);\n    updateLineGutter(cm, lineView, lineN, dims);\n    insertLineWidgets(cm, lineView, dims);\n    return lineView.node\n  }\n\n  // A lineView may contain multiple logical lines (when merged by\n  // collapsed spans). The widgets for all of them need to be drawn.\n  function insertLineWidgets(cm, lineView, dims) {\n    insertLineWidgetsFor(cm, lineView.line, lineView, dims, true);\n    if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)\n      { insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false); } }\n  }\n\n  function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) {\n    if (!line.widgets) { return }\n    var wrap = ensureLineWrapped(lineView);\n    for (var i = 0, ws = line.widgets; i < ws.length; ++i) {\n      var widget = ws[i], node = elt(\"div\", [widget.node], \"CodeMirror-linewidget\" + (widget.className ? \" \" + widget.className : \"\"));\n      if (!widget.handleMouseEvents) { node.setAttribute(\"cm-ignore-events\", \"true\"); }\n      positionLineWidget(widget, node, lineView, dims);\n      cm.display.input.setUneditable(node);\n      if (allowAbove && widget.above)\n        { wrap.insertBefore(node, lineView.gutter || lineView.text); }\n      else\n        { wrap.appendChild(node); }\n      signalLater(widget, \"redraw\");\n    }\n  }\n\n  function positionLineWidget(widget, node, lineView, dims) {\n    if (widget.noHScroll) {\n  (lineView.alignable || (lineView.alignable = [])).push(node);\n      var width = dims.wrapperWidth;\n      node.style.left = dims.fixedPos + \"px\";\n      if (!widget.coverGutter) {\n        width -= dims.gutterTotalWidth;\n        node.style.paddingLeft = dims.gutterTotalWidth + \"px\";\n      }\n      node.style.width = width + \"px\";\n    }\n    if (widget.coverGutter) {\n      node.style.zIndex = 5;\n      node.style.position = \"relative\";\n      if (!widget.noHScroll) { node.style.marginLeft = -dims.gutterTotalWidth + \"px\"; }\n    }\n  }\n\n  function widgetHeight(widget) {\n    if (widget.height != null) { return widget.height }\n    var cm = widget.doc.cm;\n    if (!cm) { return 0 }\n    if (!contains(document.body, widget.node)) {\n      var parentStyle = \"position: relative;\";\n      if (widget.coverGutter)\n        { parentStyle += \"margin-left: -\" + cm.display.gutters.offsetWidth + \"px;\"; }\n      if (widget.noHScroll)\n        { parentStyle += \"width: \" + cm.display.wrapper.clientWidth + \"px;\"; }\n      removeChildrenAndAdd(cm.display.measure, elt(\"div\", [widget.node], null, parentStyle));\n    }\n    return widget.height = widget.node.parentNode.offsetHeight\n  }\n\n  // Return true when the given mouse event happened in a widget\n  function eventInWidget(display, e) {\n    for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {\n      if (!n || (n.nodeType == 1 && n.getAttribute(\"cm-ignore-events\") == \"true\") ||\n          (n.parentNode == display.sizer && n != display.mover))\n        { return true }\n    }\n  }\n\n  // POSITION MEASUREMENT\n\n  function paddingTop(display) {return display.lineSpace.offsetTop}\n  function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight}\n  function paddingH(display) {\n    if (display.cachedPaddingH) { return display.cachedPaddingH }\n    var e = removeChildrenAndAdd(display.measure, elt(\"pre\", \"x\", \"CodeMirror-line-like\"));\n    var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle;\n    var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)};\n    if (!isNaN(data.left) && !isNaN(data.right)) { display.cachedPaddingH = data; }\n    return data\n  }\n\n  function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth }\n  function displayWidth(cm) {\n    return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth\n  }\n  function displayHeight(cm) {\n    return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight\n  }\n\n  // Ensure the lineView.wrapping.heights array is populated. This is\n  // an array of bottom offsets for the lines that make up a drawn\n  // line. When lineWrapping is on, there might be more than one\n  // height.\n  function ensureLineHeights(cm, lineView, rect) {\n    var wrapping = cm.options.lineWrapping;\n    var curWidth = wrapping && displayWidth(cm);\n    if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {\n      var heights = lineView.measure.heights = [];\n      if (wrapping) {\n        lineView.measure.width = curWidth;\n        var rects = lineView.text.firstChild.getClientRects();\n        for (var i = 0; i < rects.length - 1; i++) {\n          var cur = rects[i], next = rects[i + 1];\n          if (Math.abs(cur.bottom - next.bottom) > 2)\n            { heights.push((cur.bottom + next.top) / 2 - rect.top); }\n        }\n      }\n      heights.push(rect.bottom - rect.top);\n    }\n  }\n\n  // Find a line map (mapping character offsets to text nodes) and a\n  // measurement cache for the given line number. (A line view might\n  // contain multiple lines when collapsed ranges are present.)\n  function mapFromLineView(lineView, line, lineN) {\n    if (lineView.line == line)\n      { return {map: lineView.measure.map, cache: lineView.measure.cache} }\n    if (lineView.rest) {\n      for (var i = 0; i < lineView.rest.length; i++)\n        { if (lineView.rest[i] == line)\n          { return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]} } }\n      for (var i$1 = 0; i$1 < lineView.rest.length; i$1++)\n        { if (lineNo(lineView.rest[i$1]) > lineN)\n          { return {map: lineView.measure.maps[i$1], cache: lineView.measure.caches[i$1], before: true} } }\n    }\n  }\n\n  // Render a line into the hidden node display.externalMeasured. Used\n  // when measurement is needed for a line that's not in the viewport.\n  function updateExternalMeasurement(cm, line) {\n    line = visualLine(line);\n    var lineN = lineNo(line);\n    var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN);\n    view.lineN = lineN;\n    var built = view.built = buildLineContent(cm, view);\n    view.text = built.pre;\n    removeChildrenAndAdd(cm.display.lineMeasure, built.pre);\n    return view\n  }\n\n  // Get a {top, bottom, left, right} box (in line-local coordinates)\n  // for a given character.\n  function measureChar(cm, line, ch, bias) {\n    return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias)\n  }\n\n  // Find a line view that corresponds to the given line number.\n  function findViewForLine(cm, lineN) {\n    if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)\n      { return cm.display.view[findViewIndex(cm, lineN)] }\n    var ext = cm.display.externalMeasured;\n    if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)\n      { return ext }\n  }\n\n  // Measurement can be split in two steps, the set-up work that\n  // applies to the whole line, and the measurement of the actual\n  // character. Functions like coordsChar, that need to do a lot of\n  // measurements in a row, can thus ensure that the set-up work is\n  // only done once.\n  function prepareMeasureForLine(cm, line) {\n    var lineN = lineNo(line);\n    var view = findViewForLine(cm, lineN);\n    if (view && !view.text) {\n      view = null;\n    } else if (view && view.changes) {\n      updateLineForChanges(cm, view, lineN, getDimensions(cm));\n      cm.curOp.forceUpdate = true;\n    }\n    if (!view)\n      { view = updateExternalMeasurement(cm, line); }\n\n    var info = mapFromLineView(view, line, lineN);\n    return {\n      line: line, view: view, rect: null,\n      map: info.map, cache: info.cache, before: info.before,\n      hasHeights: false\n    }\n  }\n\n  // Given a prepared measurement object, measures the position of an\n  // actual character (or fetches it from the cache).\n  function measureCharPrepared(cm, prepared, ch, bias, varHeight) {\n    if (prepared.before) { ch = -1; }\n    var key = ch + (bias || \"\"), found;\n    if (prepared.cache.hasOwnProperty(key)) {\n      found = prepared.cache[key];\n    } else {\n      if (!prepared.rect)\n        { prepared.rect = prepared.view.text.getBoundingClientRect(); }\n      if (!prepared.hasHeights) {\n        ensureLineHeights(cm, prepared.view, prepared.rect);\n        prepared.hasHeights = true;\n      }\n      found = measureCharInner(cm, prepared, ch, bias);\n      if (!found.bogus) { prepared.cache[key] = found; }\n    }\n    return {left: found.left, right: found.right,\n            top: varHeight ? found.rtop : found.top,\n            bottom: varHeight ? found.rbottom : found.bottom}\n  }\n\n  var nullRect = {left: 0, right: 0, top: 0, bottom: 0};\n\n  function nodeAndOffsetInLineMap(map, ch, bias) {\n    var node, start, end, collapse, mStart, mEnd;\n    // First, search the line map for the text node corresponding to,\n    // or closest to, the target character.\n    for (var i = 0; i < map.length; i += 3) {\n      mStart = map[i];\n      mEnd = map[i + 1];\n      if (ch < mStart) {\n        start = 0; end = 1;\n        collapse = \"left\";\n      } else if (ch < mEnd) {\n        start = ch - mStart;\n        end = start + 1;\n      } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {\n        end = mEnd - mStart;\n        start = end - 1;\n        if (ch >= mEnd) { collapse = \"right\"; }\n      }\n      if (start != null) {\n        node = map[i + 2];\n        if (mStart == mEnd && bias == (node.insertLeft ? \"left\" : \"right\"))\n          { collapse = bias; }\n        if (bias == \"left\" && start == 0)\n          { while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {\n            node = map[(i -= 3) + 2];\n            collapse = \"left\";\n          } }\n        if (bias == \"right\" && start == mEnd - mStart)\n          { while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {\n            node = map[(i += 3) + 2];\n            collapse = \"right\";\n          } }\n        break\n      }\n    }\n    return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd}\n  }\n\n  function getUsefulRect(rects, bias) {\n    var rect = nullRect;\n    if (bias == \"left\") { for (var i = 0; i < rects.length; i++) {\n      if ((rect = rects[i]).left != rect.right) { break }\n    } } else { for (var i$1 = rects.length - 1; i$1 >= 0; i$1--) {\n      if ((rect = rects[i$1]).left != rect.right) { break }\n    } }\n    return rect\n  }\n\n  function measureCharInner(cm, prepared, ch, bias) {\n    var place = nodeAndOffsetInLineMap(prepared.map, ch, bias);\n    var node = place.node, start = place.start, end = place.end, collapse = place.collapse;\n\n    var rect;\n    if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.\n      for (var i$1 = 0; i$1 < 4; i$1++) { // Retry a maximum of 4 times when nonsense rectangles are returned\n        while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) { --start; }\n        while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) { ++end; }\n        if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart)\n          { rect = node.parentNode.getBoundingClientRect(); }\n        else\n          { rect = getUsefulRect(range(node, start, end).getClientRects(), bias); }\n        if (rect.left || rect.right || start == 0) { break }\n        end = start;\n        start = start - 1;\n        collapse = \"right\";\n      }\n      if (ie && ie_version < 11) { rect = maybeUpdateRectForZooming(cm.display.measure, rect); }\n    } else { // If it is a widget, simply get the box for the whole widget.\n      if (start > 0) { collapse = bias = \"right\"; }\n      var rects;\n      if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)\n        { rect = rects[bias == \"right\" ? rects.length - 1 : 0]; }\n      else\n        { rect = node.getBoundingClientRect(); }\n    }\n    if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) {\n      var rSpan = node.parentNode.getClientRects()[0];\n      if (rSpan)\n        { rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom}; }\n      else\n        { rect = nullRect; }\n    }\n\n    var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top;\n    var mid = (rtop + rbot) / 2;\n    var heights = prepared.view.measure.heights;\n    var i = 0;\n    for (; i < heights.length - 1; i++)\n      { if (mid < heights[i]) { break } }\n    var top = i ? heights[i - 1] : 0, bot = heights[i];\n    var result = {left: (collapse == \"right\" ? rect.right : rect.left) - prepared.rect.left,\n                  right: (collapse == \"left\" ? rect.left : rect.right) - prepared.rect.left,\n                  top: top, bottom: bot};\n    if (!rect.left && !rect.right) { result.bogus = true; }\n    if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; }\n\n    return result\n  }\n\n  // Work around problem with bounding client rects on ranges being\n  // returned incorrectly when zoomed on IE10 and below.\n  function maybeUpdateRectForZooming(measure, rect) {\n    if (!window.screen || screen.logicalXDPI == null ||\n        screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure))\n      { return rect }\n    var scaleX = screen.logicalXDPI / screen.deviceXDPI;\n    var scaleY = screen.logicalYDPI / screen.deviceYDPI;\n    return {left: rect.left * scaleX, right: rect.right * scaleX,\n            top: rect.top * scaleY, bottom: rect.bottom * scaleY}\n  }\n\n  function clearLineMeasurementCacheFor(lineView) {\n    if (lineView.measure) {\n      lineView.measure.cache = {};\n      lineView.measure.heights = null;\n      if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)\n        { lineView.measure.caches[i] = {}; } }\n    }\n  }\n\n  function clearLineMeasurementCache(cm) {\n    cm.display.externalMeasure = null;\n    removeChildren(cm.display.lineMeasure);\n    for (var i = 0; i < cm.display.view.length; i++)\n      { clearLineMeasurementCacheFor(cm.display.view[i]); }\n  }\n\n  function clearCaches(cm) {\n    clearLineMeasurementCache(cm);\n    cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null;\n    if (!cm.options.lineWrapping) { cm.display.maxLineChanged = true; }\n    cm.display.lineNumChars = null;\n  }\n\n  function pageScrollX() {\n    // Work around https://bugs.chromium.org/p/chromium/issues/detail?id=489206\n    // which causes page_Offset and bounding client rects to use\n    // different reference viewports and invalidate our calculations.\n    if (chrome && android) { return -(document.body.getBoundingClientRect().left - parseInt(getComputedStyle(document.body).marginLeft)) }\n    return window.pageXOffset || (document.documentElement || document.body).scrollLeft\n  }\n  function pageScrollY() {\n    if (chrome && android) { return -(document.body.getBoundingClientRect().top - parseInt(getComputedStyle(document.body).marginTop)) }\n    return window.pageYOffset || (document.documentElement || document.body).scrollTop\n  }\n\n  function widgetTopHeight(lineObj) {\n    var ref = visualLine(lineObj);\n    var widgets = ref.widgets;\n    var height = 0;\n    if (widgets) { for (var i = 0; i < widgets.length; ++i) { if (widgets[i].above)\n      { height += widgetHeight(widgets[i]); } } }\n    return height\n  }\n\n  // Converts a {top, bottom, left, right} box from line-local\n  // coordinates into another coordinate system. Context may be one of\n  // \"line\", \"div\" (display.lineDiv), \"local\"./null (editor), \"window\",\n  // or \"page\".\n  function intoCoordSystem(cm, lineObj, rect, context, includeWidgets) {\n    if (!includeWidgets) {\n      var height = widgetTopHeight(lineObj);\n      rect.top += height; rect.bottom += height;\n    }\n    if (context == \"line\") { return rect }\n    if (!context) { context = \"local\"; }\n    var yOff = heightAtLine(lineObj);\n    if (context == \"local\") { yOff += paddingTop(cm.display); }\n    else { yOff -= cm.display.viewOffset; }\n    if (context == \"page\" || context == \"window\") {\n      var lOff = cm.display.lineSpace.getBoundingClientRect();\n      yOff += lOff.top + (context == \"window\" ? 0 : pageScrollY());\n      var xOff = lOff.left + (context == \"window\" ? 0 : pageScrollX());\n      rect.left += xOff; rect.right += xOff;\n    }\n    rect.top += yOff; rect.bottom += yOff;\n    return rect\n  }\n\n  // Coverts a box from \"div\" coords to another coordinate system.\n  // Context may be \"window\", \"page\", \"div\", or \"local\"./null.\n  function fromCoordSystem(cm, coords, context) {\n    if (context == \"div\") { return coords }\n    var left = coords.left, top = coords.top;\n    // First move into \"page\" coordinate system\n    if (context == \"page\") {\n      left -= pageScrollX();\n      top -= pageScrollY();\n    } else if (context == \"local\" || !context) {\n      var localBox = cm.display.sizer.getBoundingClientRect();\n      left += localBox.left;\n      top += localBox.top;\n    }\n\n    var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect();\n    return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}\n  }\n\n  function charCoords(cm, pos, context, lineObj, bias) {\n    if (!lineObj) { lineObj = getLine(cm.doc, pos.line); }\n    return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context)\n  }\n\n  // Returns a box for a given cursor position, which may have an\n  // 'other' property containing the position of the secondary cursor\n  // on a bidi boundary.\n  // A cursor Pos(line, char, \"before\") is on the same visual line as `char - 1`\n  // and after `char - 1` in writing order of `char - 1`\n  // A cursor Pos(line, char, \"after\") is on the same visual line as `char`\n  // and before `char` in writing order of `char`\n  // Examples (upper-case letters are RTL, lower-case are LTR):\n  //     Pos(0, 1, ...)\n  //     before   after\n  // ab     a|b     a|b\n  // aB     a|B     aB|\n  // Ab     |Ab     A|b\n  // AB     B|A     B|A\n  // Every position after the last character on a line is considered to stick\n  // to the last character on the line.\n  function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) {\n    lineObj = lineObj || getLine(cm.doc, pos.line);\n    if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj); }\n    function get(ch, right) {\n      var m = measureCharPrepared(cm, preparedMeasure, ch, right ? \"right\" : \"left\", varHeight);\n      if (right) { m.left = m.right; } else { m.right = m.left; }\n      return intoCoordSystem(cm, lineObj, m, context)\n    }\n    var order = getOrder(lineObj, cm.doc.direction), ch = pos.ch, sticky = pos.sticky;\n    if (ch >= lineObj.text.length) {\n      ch = lineObj.text.length;\n      sticky = \"before\";\n    } else if (ch <= 0) {\n      ch = 0;\n      sticky = \"after\";\n    }\n    if (!order) { return get(sticky == \"before\" ? ch - 1 : ch, sticky == \"before\") }\n\n    function getBidi(ch, partPos, invert) {\n      var part = order[partPos], right = part.level == 1;\n      return get(invert ? ch - 1 : ch, right != invert)\n    }\n    var partPos = getBidiPartAt(order, ch, sticky);\n    var other = bidiOther;\n    var val = getBidi(ch, partPos, sticky == \"before\");\n    if (other != null) { val.other = getBidi(ch, other, sticky != \"before\"); }\n    return val\n  }\n\n  // Used to cheaply estimate the coordinates for a position. Used for\n  // intermediate scroll updates.\n  function estimateCoords(cm, pos) {\n    var left = 0;\n    pos = clipPos(cm.doc, pos);\n    if (!cm.options.lineWrapping) { left = charWidth(cm.display) * pos.ch; }\n    var lineObj = getLine(cm.doc, pos.line);\n    var top = heightAtLine(lineObj) + paddingTop(cm.display);\n    return {left: left, right: left, top: top, bottom: top + lineObj.height}\n  }\n\n  // Positions returned by coordsChar contain some extra information.\n  // xRel is the relative x position of the input coordinates compared\n  // to the found position (so xRel > 0 means the coordinates are to\n  // the right of the character position, for example). When outside\n  // is true, that means the coordinates lie outside the line's\n  // vertical range.\n  function PosWithInfo(line, ch, sticky, outside, xRel) {\n    var pos = Pos(line, ch, sticky);\n    pos.xRel = xRel;\n    if (outside) { pos.outside = outside; }\n    return pos\n  }\n\n  // Compute the character position closest to the given coordinates.\n  // Input must be lineSpace-local (\"div\" coordinate system).\n  function coordsChar(cm, x, y) {\n    var doc = cm.doc;\n    y += cm.display.viewOffset;\n    if (y < 0) { return PosWithInfo(doc.first, 0, null, -1, -1) }\n    var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1;\n    if (lineN > last)\n      { return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, null, 1, 1) }\n    if (x < 0) { x = 0; }\n\n    var lineObj = getLine(doc, lineN);\n    for (;;) {\n      var found = coordsCharInner(cm, lineObj, lineN, x, y);\n      var collapsed = collapsedSpanAround(lineObj, found.ch + (found.xRel > 0 || found.outside > 0 ? 1 : 0));\n      if (!collapsed) { return found }\n      var rangeEnd = collapsed.find(1);\n      if (rangeEnd.line == lineN) { return rangeEnd }\n      lineObj = getLine(doc, lineN = rangeEnd.line);\n    }\n  }\n\n  function wrappedLineExtent(cm, lineObj, preparedMeasure, y) {\n    y -= widgetTopHeight(lineObj);\n    var end = lineObj.text.length;\n    var begin = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch - 1).bottom <= y; }, end, 0);\n    end = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch).top > y; }, begin, end);\n    return {begin: begin, end: end}\n  }\n\n  function wrappedLineExtentChar(cm, lineObj, preparedMeasure, target) {\n    if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj); }\n    var targetTop = intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, target), \"line\").top;\n    return wrappedLineExtent(cm, lineObj, preparedMeasure, targetTop)\n  }\n\n  // Returns true if the given side of a box is after the given\n  // coordinates, in top-to-bottom, left-to-right order.\n  function boxIsAfter(box, x, y, left) {\n    return box.bottom <= y ? false : box.top > y ? true : (left ? box.left : box.right) > x\n  }\n\n  function coordsCharInner(cm, lineObj, lineNo, x, y) {\n    // Move y into line-local coordinate space\n    y -= heightAtLine(lineObj);\n    var preparedMeasure = prepareMeasureForLine(cm, lineObj);\n    // When directly calling `measureCharPrepared`, we have to adjust\n    // for the widgets at this line.\n    var widgetHeight = widgetTopHeight(lineObj);\n    var begin = 0, end = lineObj.text.length, ltr = true;\n\n    var order = getOrder(lineObj, cm.doc.direction);\n    // If the line isn't plain left-to-right text, first figure out\n    // which bidi section the coordinates fall into.\n    if (order) {\n      var part = (cm.options.lineWrapping ? coordsBidiPartWrapped : coordsBidiPart)\n                   (cm, lineObj, lineNo, preparedMeasure, order, x, y);\n      ltr = part.level != 1;\n      // The awkward -1 offsets are needed because findFirst (called\n      // on these below) will treat its first bound as inclusive,\n      // second as exclusive, but we want to actually address the\n      // characters in the part's range\n      begin = ltr ? part.from : part.to - 1;\n      end = ltr ? part.to : part.from - 1;\n    }\n\n    // A binary search to find the first character whose bounding box\n    // starts after the coordinates. If we run across any whose box wrap\n    // the coordinates, store that.\n    var chAround = null, boxAround = null;\n    var ch = findFirst(function (ch) {\n      var box = measureCharPrepared(cm, preparedMeasure, ch);\n      box.top += widgetHeight; box.bottom += widgetHeight;\n      if (!boxIsAfter(box, x, y, false)) { return false }\n      if (box.top <= y && box.left <= x) {\n        chAround = ch;\n        boxAround = box;\n      }\n      return true\n    }, begin, end);\n\n    var baseX, sticky, outside = false;\n    // If a box around the coordinates was found, use that\n    if (boxAround) {\n      // Distinguish coordinates nearer to the left or right side of the box\n      var atLeft = x - boxAround.left < boxAround.right - x, atStart = atLeft == ltr;\n      ch = chAround + (atStart ? 0 : 1);\n      sticky = atStart ? \"after\" : \"before\";\n      baseX = atLeft ? boxAround.left : boxAround.right;\n    } else {\n      // (Adjust for extended bound, if necessary.)\n      if (!ltr && (ch == end || ch == begin)) { ch++; }\n      // To determine which side to associate with, get the box to the\n      // left of the character and compare it's vertical position to the\n      // coordinates\n      sticky = ch == 0 ? \"after\" : ch == lineObj.text.length ? \"before\" :\n        (measureCharPrepared(cm, preparedMeasure, ch - (ltr ? 1 : 0)).bottom + widgetHeight <= y) == ltr ?\n        \"after\" : \"before\";\n      // Now get accurate coordinates for this place, in order to get a\n      // base X position\n      var coords = cursorCoords(cm, Pos(lineNo, ch, sticky), \"line\", lineObj, preparedMeasure);\n      baseX = coords.left;\n      outside = y < coords.top ? -1 : y >= coords.bottom ? 1 : 0;\n    }\n\n    ch = skipExtendingChars(lineObj.text, ch, 1);\n    return PosWithInfo(lineNo, ch, sticky, outside, x - baseX)\n  }\n\n  function coordsBidiPart(cm, lineObj, lineNo, preparedMeasure, order, x, y) {\n    // Bidi parts are sorted left-to-right, and in a non-line-wrapping\n    // situation, we can take this ordering to correspond to the visual\n    // ordering. This finds the first part whose end is after the given\n    // coordinates.\n    var index = findFirst(function (i) {\n      var part = order[i], ltr = part.level != 1;\n      return boxIsAfter(cursorCoords(cm, Pos(lineNo, ltr ? part.to : part.from, ltr ? \"before\" : \"after\"),\n                                     \"line\", lineObj, preparedMeasure), x, y, true)\n    }, 0, order.length - 1);\n    var part = order[index];\n    // If this isn't the first part, the part's start is also after\n    // the coordinates, and the coordinates aren't on the same line as\n    // that start, move one part back.\n    if (index > 0) {\n      var ltr = part.level != 1;\n      var start = cursorCoords(cm, Pos(lineNo, ltr ? part.from : part.to, ltr ? \"after\" : \"before\"),\n                               \"line\", lineObj, preparedMeasure);\n      if (boxIsAfter(start, x, y, true) && start.top > y)\n        { part = order[index - 1]; }\n    }\n    return part\n  }\n\n  function coordsBidiPartWrapped(cm, lineObj, _lineNo, preparedMeasure, order, x, y) {\n    // In a wrapped line, rtl text on wrapping boundaries can do things\n    // that don't correspond to the ordering in our `order` array at\n    // all, so a binary search doesn't work, and we want to return a\n    // part that only spans one line so that the binary search in\n    // coordsCharInner is safe. As such, we first find the extent of the\n    // wrapped line, and then do a flat search in which we discard any\n    // spans that aren't on the line.\n    var ref = wrappedLineExtent(cm, lineObj, preparedMeasure, y);\n    var begin = ref.begin;\n    var end = ref.end;\n    if (/\\s/.test(lineObj.text.charAt(end - 1))) { end--; }\n    var part = null, closestDist = null;\n    for (var i = 0; i < order.length; i++) {\n      var p = order[i];\n      if (p.from >= end || p.to <= begin) { continue }\n      var ltr = p.level != 1;\n      var endX = measureCharPrepared(cm, preparedMeasure, ltr ? Math.min(end, p.to) - 1 : Math.max(begin, p.from)).right;\n      // Weigh against spans ending before this, so that they are only\n      // picked if nothing ends after\n      var dist = endX < x ? x - endX + 1e9 : endX - x;\n      if (!part || closestDist > dist) {\n        part = p;\n        closestDist = dist;\n      }\n    }\n    if (!part) { part = order[order.length - 1]; }\n    // Clip the part to the wrapped line.\n    if (part.from < begin) { part = {from: begin, to: part.to, level: part.level}; }\n    if (part.to > end) { part = {from: part.from, to: end, level: part.level}; }\n    return part\n  }\n\n  var measureText;\n  // Compute the default text height.\n  function textHeight(display) {\n    if (display.cachedTextHeight != null) { return display.cachedTextHeight }\n    if (measureText == null) {\n      measureText = elt(\"pre\", null, \"CodeMirror-line-like\");\n      // Measure a bunch of lines, for browsers that compute\n      // fractional heights.\n      for (var i = 0; i < 49; ++i) {\n        measureText.appendChild(document.createTextNode(\"x\"));\n        measureText.appendChild(elt(\"br\"));\n      }\n      measureText.appendChild(document.createTextNode(\"x\"));\n    }\n    removeChildrenAndAdd(display.measure, measureText);\n    var height = measureText.offsetHeight / 50;\n    if (height > 3) { display.cachedTextHeight = height; }\n    removeChildren(display.measure);\n    return height || 1\n  }\n\n  // Compute the default character width.\n  function charWidth(display) {\n    if (display.cachedCharWidth != null) { return display.cachedCharWidth }\n    var anchor = elt(\"span\", \"xxxxxxxxxx\");\n    var pre = elt(\"pre\", [anchor], \"CodeMirror-line-like\");\n    removeChildrenAndAdd(display.measure, pre);\n    var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10;\n    if (width > 2) { display.cachedCharWidth = width; }\n    return width || 10\n  }\n\n  // Do a bulk-read of the DOM positions and sizes needed to draw the\n  // view, so that we don't interleave reading and writing to the DOM.\n  function getDimensions(cm) {\n    var d = cm.display, left = {}, width = {};\n    var gutterLeft = d.gutters.clientLeft;\n    for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {\n      var id = cm.display.gutterSpecs[i].className;\n      left[id] = n.offsetLeft + n.clientLeft + gutterLeft;\n      width[id] = n.clientWidth;\n    }\n    return {fixedPos: compensateForHScroll(d),\n            gutterTotalWidth: d.gutters.offsetWidth,\n            gutterLeft: left,\n            gutterWidth: width,\n            wrapperWidth: d.wrapper.clientWidth}\n  }\n\n  // Computes display.scroller.scrollLeft + display.gutters.offsetWidth,\n  // but using getBoundingClientRect to get a sub-pixel-accurate\n  // result.\n  function compensateForHScroll(display) {\n    return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left\n  }\n\n  // Returns a function that estimates the height of a line, to use as\n  // first approximation until the line becomes visible (and is thus\n  // properly measurable).\n  function estimateHeight(cm) {\n    var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;\n    var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);\n    return function (line) {\n      if (lineIsHidden(cm.doc, line)) { return 0 }\n\n      var widgetsHeight = 0;\n      if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) {\n        if (line.widgets[i].height) { widgetsHeight += line.widgets[i].height; }\n      } }\n\n      if (wrapping)\n        { return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th }\n      else\n        { return widgetsHeight + th }\n    }\n  }\n\n  function estimateLineHeights(cm) {\n    var doc = cm.doc, est = estimateHeight(cm);\n    doc.iter(function (line) {\n      var estHeight = est(line);\n      if (estHeight != line.height) { updateLineHeight(line, estHeight); }\n    });\n  }\n\n  // Given a mouse event, find the corresponding position. If liberal\n  // is false, it checks whether a gutter or scrollbar was clicked,\n  // and returns null if it was. forRect is used by rectangular\n  // selections, and tries to estimate a character position even for\n  // coordinates beyond the right of the text.\n  function posFromMouse(cm, e, liberal, forRect) {\n    var display = cm.display;\n    if (!liberal && e_target(e).getAttribute(\"cm-not-content\") == \"true\") { return null }\n\n    var x, y, space = display.lineSpace.getBoundingClientRect();\n    // Fails unpredictably on IE[67] when mouse is dragged around quickly.\n    try { x = e.clientX - space.left; y = e.clientY - space.top; }\n    catch (e$1) { return null }\n    var coords = coordsChar(cm, x, y), line;\n    if (forRect && coords.xRel > 0 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {\n      var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length;\n      coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff));\n    }\n    return coords\n  }\n\n  // Find the view element corresponding to a given line. Return null\n  // when the line isn't visible.\n  function findViewIndex(cm, n) {\n    if (n >= cm.display.viewTo) { return null }\n    n -= cm.display.viewFrom;\n    if (n < 0) { return null }\n    var view = cm.display.view;\n    for (var i = 0; i < view.length; i++) {\n      n -= view[i].size;\n      if (n < 0) { return i }\n    }\n  }\n\n  // Updates the display.view data structure for a given change to the\n  // document. From and to are in pre-change coordinates. Lendiff is\n  // the amount of lines added or subtracted by the change. This is\n  // used for changes that span multiple lines, or change the way\n  // lines are divided into visual lines. regLineChange (below)\n  // registers single-line changes.\n  function regChange(cm, from, to, lendiff) {\n    if (from == null) { from = cm.doc.first; }\n    if (to == null) { to = cm.doc.first + cm.doc.size; }\n    if (!lendiff) { lendiff = 0; }\n\n    var display = cm.display;\n    if (lendiff && to < display.viewTo &&\n        (display.updateLineNumbers == null || display.updateLineNumbers > from))\n      { display.updateLineNumbers = from; }\n\n    cm.curOp.viewChanged = true;\n\n    if (from >= display.viewTo) { // Change after\n      if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)\n        { resetView(cm); }\n    } else if (to <= display.viewFrom) { // Change before\n      if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {\n        resetView(cm);\n      } else {\n        display.viewFrom += lendiff;\n        display.viewTo += lendiff;\n      }\n    } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap\n      resetView(cm);\n    } else if (from <= display.viewFrom) { // Top overlap\n      var cut = viewCuttingPoint(cm, to, to + lendiff, 1);\n      if (cut) {\n        display.view = display.view.slice(cut.index);\n        display.viewFrom = cut.lineN;\n        display.viewTo += lendiff;\n      } else {\n        resetView(cm);\n      }\n    } else if (to >= display.viewTo) { // Bottom overlap\n      var cut$1 = viewCuttingPoint(cm, from, from, -1);\n      if (cut$1) {\n        display.view = display.view.slice(0, cut$1.index);\n        display.viewTo = cut$1.lineN;\n      } else {\n        resetView(cm);\n      }\n    } else { // Gap in the middle\n      var cutTop = viewCuttingPoint(cm, from, from, -1);\n      var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1);\n      if (cutTop && cutBot) {\n        display.view = display.view.slice(0, cutTop.index)\n          .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))\n          .concat(display.view.slice(cutBot.index));\n        display.viewTo += lendiff;\n      } else {\n        resetView(cm);\n      }\n    }\n\n    var ext = display.externalMeasured;\n    if (ext) {\n      if (to < ext.lineN)\n        { ext.lineN += lendiff; }\n      else if (from < ext.lineN + ext.size)\n        { display.externalMeasured = null; }\n    }\n  }\n\n  // Register a change to a single line. Type must be one of \"text\",\n  // \"gutter\", \"class\", \"widget\"\n  function regLineChange(cm, line, type) {\n    cm.curOp.viewChanged = true;\n    var display = cm.display, ext = cm.display.externalMeasured;\n    if (ext && line >= ext.lineN && line < ext.lineN + ext.size)\n      { display.externalMeasured = null; }\n\n    if (line < display.viewFrom || line >= display.viewTo) { return }\n    var lineView = display.view[findViewIndex(cm, line)];\n    if (lineView.node == null) { return }\n    var arr = lineView.changes || (lineView.changes = []);\n    if (indexOf(arr, type) == -1) { arr.push(type); }\n  }\n\n  // Clear the view.\n  function resetView(cm) {\n    cm.display.viewFrom = cm.display.viewTo = cm.doc.first;\n    cm.display.view = [];\n    cm.display.viewOffset = 0;\n  }\n\n  function viewCuttingPoint(cm, oldN, newN, dir) {\n    var index = findViewIndex(cm, oldN), diff, view = cm.display.view;\n    if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size)\n      { return {index: index, lineN: newN} }\n    var n = cm.display.viewFrom;\n    for (var i = 0; i < index; i++)\n      { n += view[i].size; }\n    if (n != oldN) {\n      if (dir > 0) {\n        if (index == view.length - 1) { return null }\n        diff = (n + view[index].size) - oldN;\n        index++;\n      } else {\n        diff = n - oldN;\n      }\n      oldN += diff; newN += diff;\n    }\n    while (visualLineNo(cm.doc, newN) != newN) {\n      if (index == (dir < 0 ? 0 : view.length - 1)) { return null }\n      newN += dir * view[index - (dir < 0 ? 1 : 0)].size;\n      index += dir;\n    }\n    return {index: index, lineN: newN}\n  }\n\n  // Force the view to cover a given range, adding empty view element\n  // or clipping off existing ones as needed.\n  function adjustView(cm, from, to) {\n    var display = cm.display, view = display.view;\n    if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {\n      display.view = buildViewArray(cm, from, to);\n      display.viewFrom = from;\n    } else {\n      if (display.viewFrom > from)\n        { display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view); }\n      else if (display.viewFrom < from)\n        { display.view = display.view.slice(findViewIndex(cm, from)); }\n      display.viewFrom = from;\n      if (display.viewTo < to)\n        { display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)); }\n      else if (display.viewTo > to)\n        { display.view = display.view.slice(0, findViewIndex(cm, to)); }\n    }\n    display.viewTo = to;\n  }\n\n  // Count the number of lines in the view whose DOM representation is\n  // out of date (or nonexistent).\n  function countDirtyView(cm) {\n    var view = cm.display.view, dirty = 0;\n    for (var i = 0; i < view.length; i++) {\n      var lineView = view[i];\n      if (!lineView.hidden && (!lineView.node || lineView.changes)) { ++dirty; }\n    }\n    return dirty\n  }\n\n  function updateSelection(cm) {\n    cm.display.input.showSelection(cm.display.input.prepareSelection());\n  }\n\n  function prepareSelection(cm, primary) {\n    if ( primary === void 0 ) primary = true;\n\n    var doc = cm.doc, result = {};\n    var curFragment = result.cursors = document.createDocumentFragment();\n    var selFragment = result.selection = document.createDocumentFragment();\n\n    var customCursor = cm.options.$customCursor;\n    if (customCursor) { primary = true; }\n    for (var i = 0; i < doc.sel.ranges.length; i++) {\n      if (!primary && i == doc.sel.primIndex) { continue }\n      var range = doc.sel.ranges[i];\n      if (range.from().line >= cm.display.viewTo || range.to().line < cm.display.viewFrom) { continue }\n      var collapsed = range.empty();\n      if (customCursor) {\n        var head = customCursor(cm, range);\n        if (head) { drawSelectionCursor(cm, head, curFragment); }\n      } else if (collapsed || cm.options.showCursorWhenSelecting) {\n        drawSelectionCursor(cm, range.head, curFragment);\n      }\n      if (!collapsed)\n        { drawSelectionRange(cm, range, selFragment); }\n    }\n    return result\n  }\n\n  // Draws a cursor for the given range\n  function drawSelectionCursor(cm, head, output) {\n    var pos = cursorCoords(cm, head, \"div\", null, null, !cm.options.singleCursorHeightPerLine);\n\n    var cursor = output.appendChild(elt(\"div\", \"\\u00a0\", \"CodeMirror-cursor\"));\n    cursor.style.left = pos.left + \"px\";\n    cursor.style.top = pos.top + \"px\";\n    cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + \"px\";\n\n    if (/\\bcm-fat-cursor\\b/.test(cm.getWrapperElement().className)) {\n      var charPos = charCoords(cm, head, \"div\", null, null);\n      var width = charPos.right - charPos.left;\n      cursor.style.width = (width > 0 ? width : cm.defaultCharWidth()) + \"px\";\n    }\n\n    if (pos.other) {\n      // Secondary cursor, shown when on a 'jump' in bi-directional text\n      var otherCursor = output.appendChild(elt(\"div\", \"\\u00a0\", \"CodeMirror-cursor CodeMirror-secondarycursor\"));\n      otherCursor.style.display = \"\";\n      otherCursor.style.left = pos.other.left + \"px\";\n      otherCursor.style.top = pos.other.top + \"px\";\n      otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + \"px\";\n    }\n  }\n\n  function cmpCoords(a, b) { return a.top - b.top || a.left - b.left }\n\n  // Draws the given range as a highlighted selection\n  function drawSelectionRange(cm, range, output) {\n    var display = cm.display, doc = cm.doc;\n    var fragment = document.createDocumentFragment();\n    var padding = paddingH(cm.display), leftSide = padding.left;\n    var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right;\n    var docLTR = doc.direction == \"ltr\";\n\n    function add(left, top, width, bottom) {\n      if (top < 0) { top = 0; }\n      top = Math.round(top);\n      bottom = Math.round(bottom);\n      fragment.appendChild(elt(\"div\", null, \"CodeMirror-selected\", (\"position: absolute; left: \" + left + \"px;\\n                             top: \" + top + \"px; width: \" + (width == null ? rightSide - left : width) + \"px;\\n                             height: \" + (bottom - top) + \"px\")));\n    }\n\n    function drawForLine(line, fromArg, toArg) {\n      var lineObj = getLine(doc, line);\n      var lineLen = lineObj.text.length;\n      var start, end;\n      function coords(ch, bias) {\n        return charCoords(cm, Pos(line, ch), \"div\", lineObj, bias)\n      }\n\n      function wrapX(pos, dir, side) {\n        var extent = wrappedLineExtentChar(cm, lineObj, null, pos);\n        var prop = (dir == \"ltr\") == (side == \"after\") ? \"left\" : \"right\";\n        var ch = side == \"after\" ? extent.begin : extent.end - (/\\s/.test(lineObj.text.charAt(extent.end - 1)) ? 2 : 1);\n        return coords(ch, prop)[prop]\n      }\n\n      var order = getOrder(lineObj, doc.direction);\n      iterateBidiSections(order, fromArg || 0, toArg == null ? lineLen : toArg, function (from, to, dir, i) {\n        var ltr = dir == \"ltr\";\n        var fromPos = coords(from, ltr ? \"left\" : \"right\");\n        var toPos = coords(to - 1, ltr ? \"right\" : \"left\");\n\n        var openStart = fromArg == null && from == 0, openEnd = toArg == null && to == lineLen;\n        var first = i == 0, last = !order || i == order.length - 1;\n        if (toPos.top - fromPos.top <= 3) { // Single line\n          var openLeft = (docLTR ? openStart : openEnd) && first;\n          var openRight = (docLTR ? openEnd : openStart) && last;\n          var left = openLeft ? leftSide : (ltr ? fromPos : toPos).left;\n          var right = openRight ? rightSide : (ltr ? toPos : fromPos).right;\n          add(left, fromPos.top, right - left, fromPos.bottom);\n        } else { // Multiple lines\n          var topLeft, topRight, botLeft, botRight;\n          if (ltr) {\n            topLeft = docLTR && openStart && first ? leftSide : fromPos.left;\n            topRight = docLTR ? rightSide : wrapX(from, dir, \"before\");\n            botLeft = docLTR ? leftSide : wrapX(to, dir, \"after\");\n            botRight = docLTR && openEnd && last ? rightSide : toPos.right;\n          } else {\n            topLeft = !docLTR ? leftSide : wrapX(from, dir, \"before\");\n            topRight = !docLTR && openStart && first ? rightSide : fromPos.right;\n            botLeft = !docLTR && openEnd && last ? leftSide : toPos.left;\n            botRight = !docLTR ? rightSide : wrapX(to, dir, \"after\");\n          }\n          add(topLeft, fromPos.top, topRight - topLeft, fromPos.bottom);\n          if (fromPos.bottom < toPos.top) { add(leftSide, fromPos.bottom, null, toPos.top); }\n          add(botLeft, toPos.top, botRight - botLeft, toPos.bottom);\n        }\n\n        if (!start || cmpCoords(fromPos, start) < 0) { start = fromPos; }\n        if (cmpCoords(toPos, start) < 0) { start = toPos; }\n        if (!end || cmpCoords(fromPos, end) < 0) { end = fromPos; }\n        if (cmpCoords(toPos, end) < 0) { end = toPos; }\n      });\n      return {start: start, end: end}\n    }\n\n    var sFrom = range.from(), sTo = range.to();\n    if (sFrom.line == sTo.line) {\n      drawForLine(sFrom.line, sFrom.ch, sTo.ch);\n    } else {\n      var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line);\n      var singleVLine = visualLine(fromLine) == visualLine(toLine);\n      var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end;\n      var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start;\n      if (singleVLine) {\n        if (leftEnd.top < rightStart.top - 2) {\n          add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);\n          add(leftSide, rightStart.top, rightStart.left, rightStart.bottom);\n        } else {\n          add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);\n        }\n      }\n      if (leftEnd.bottom < rightStart.top)\n        { add(leftSide, leftEnd.bottom, null, rightStart.top); }\n    }\n\n    output.appendChild(fragment);\n  }\n\n  // Cursor-blinking\n  function restartBlink(cm) {\n    if (!cm.state.focused) { return }\n    var display = cm.display;\n    clearInterval(display.blinker);\n    var on = true;\n    display.cursorDiv.style.visibility = \"\";\n    if (cm.options.cursorBlinkRate > 0)\n      { display.blinker = setInterval(function () {\n        if (!cm.hasFocus()) { onBlur(cm); }\n        display.cursorDiv.style.visibility = (on = !on) ? \"\" : \"hidden\";\n      }, cm.options.cursorBlinkRate); }\n    else if (cm.options.cursorBlinkRate < 0)\n      { display.cursorDiv.style.visibility = \"hidden\"; }\n  }\n\n  function ensureFocus(cm) {\n    if (!cm.hasFocus()) {\n      cm.display.input.focus();\n      if (!cm.state.focused) { onFocus(cm); }\n    }\n  }\n\n  function delayBlurEvent(cm) {\n    cm.state.delayingBlurEvent = true;\n    setTimeout(function () { if (cm.state.delayingBlurEvent) {\n      cm.state.delayingBlurEvent = false;\n      if (cm.state.focused) { onBlur(cm); }\n    } }, 100);\n  }\n\n  function onFocus(cm, e) {\n    if (cm.state.delayingBlurEvent && !cm.state.draggingText) { cm.state.delayingBlurEvent = false; }\n\n    if (cm.options.readOnly == \"nocursor\") { return }\n    if (!cm.state.focused) {\n      signal(cm, \"focus\", cm, e);\n      cm.state.focused = true;\n      addClass(cm.display.wrapper, \"CodeMirror-focused\");\n      // This test prevents this from firing when a context\n      // menu is closed (since the input reset would kill the\n      // select-all detection hack)\n      if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) {\n        cm.display.input.reset();\n        if (webkit) { setTimeout(function () { return cm.display.input.reset(true); }, 20); } // Issue #1730\n      }\n      cm.display.input.receivedFocus();\n    }\n    restartBlink(cm);\n  }\n  function onBlur(cm, e) {\n    if (cm.state.delayingBlurEvent) { return }\n\n    if (cm.state.focused) {\n      signal(cm, \"blur\", cm, e);\n      cm.state.focused = false;\n      rmClass(cm.display.wrapper, \"CodeMirror-focused\");\n    }\n    clearInterval(cm.display.blinker);\n    setTimeout(function () { if (!cm.state.focused) { cm.display.shift = false; } }, 150);\n  }\n\n  // Read the actual heights of the rendered lines, and update their\n  // stored heights to match.\n  function updateHeightsInViewport(cm) {\n    var display = cm.display;\n    var prevBottom = display.lineDiv.offsetTop;\n    var viewTop = Math.max(0, display.scroller.getBoundingClientRect().top);\n    var oldHeight = display.lineDiv.getBoundingClientRect().top;\n    var mustScroll = 0;\n    for (var i = 0; i < display.view.length; i++) {\n      var cur = display.view[i], wrapping = cm.options.lineWrapping;\n      var height = (void 0), width = 0;\n      if (cur.hidden) { continue }\n      oldHeight += cur.line.height;\n      if (ie && ie_version < 8) {\n        var bot = cur.node.offsetTop + cur.node.offsetHeight;\n        height = bot - prevBottom;\n        prevBottom = bot;\n      } else {\n        var box = cur.node.getBoundingClientRect();\n        height = box.bottom - box.top;\n        // Check that lines don't extend past the right of the current\n        // editor width\n        if (!wrapping && cur.text.firstChild)\n          { width = cur.text.firstChild.getBoundingClientRect().right - box.left - 1; }\n      }\n      var diff = cur.line.height - height;\n      if (diff > .005 || diff < -.005) {\n        if (oldHeight < viewTop) { mustScroll -= diff; }\n        updateLineHeight(cur.line, height);\n        updateWidgetHeight(cur.line);\n        if (cur.rest) { for (var j = 0; j < cur.rest.length; j++)\n          { updateWidgetHeight(cur.rest[j]); } }\n      }\n      if (width > cm.display.sizerWidth) {\n        var chWidth = Math.ceil(width / charWidth(cm.display));\n        if (chWidth > cm.display.maxLineLength) {\n          cm.display.maxLineLength = chWidth;\n          cm.display.maxLine = cur.line;\n          cm.display.maxLineChanged = true;\n        }\n      }\n    }\n    if (Math.abs(mustScroll) > 2) { display.scroller.scrollTop += mustScroll; }\n  }\n\n  // Read and store the height of line widgets associated with the\n  // given line.\n  function updateWidgetHeight(line) {\n    if (line.widgets) { for (var i = 0; i < line.widgets.length; ++i) {\n      var w = line.widgets[i], parent = w.node.parentNode;\n      if (parent) { w.height = parent.offsetHeight; }\n    } }\n  }\n\n  // Compute the lines that are visible in a given viewport (defaults\n  // the the current scroll position). viewport may contain top,\n  // height, and ensure (see op.scrollToPos) properties.\n  function visibleLines(display, doc, viewport) {\n    var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop;\n    top = Math.floor(top - paddingTop(display));\n    var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight;\n\n    var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);\n    // Ensure is a {from: {line, ch}, to: {line, ch}} object, and\n    // forces those lines into the viewport (if possible).\n    if (viewport && viewport.ensure) {\n      var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line;\n      if (ensureFrom < from) {\n        from = ensureFrom;\n        to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight);\n      } else if (Math.min(ensureTo, doc.lastLine()) >= to) {\n        from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight);\n        to = ensureTo;\n      }\n    }\n    return {from: from, to: Math.max(to, from + 1)}\n  }\n\n  // SCROLLING THINGS INTO VIEW\n\n  // If an editor sits on the top or bottom of the window, partially\n  // scrolled out of view, this ensures that the cursor is visible.\n  function maybeScrollWindow(cm, rect) {\n    if (signalDOMEvent(cm, \"scrollCursorIntoView\")) { return }\n\n    var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;\n    if (rect.top + box.top < 0) { doScroll = true; }\n    else if (rect.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) { doScroll = false; }\n    if (doScroll != null && !phantom) {\n      var scrollNode = elt(\"div\", \"\\u200b\", null, (\"position: absolute;\\n                         top: \" + (rect.top - display.viewOffset - paddingTop(cm.display)) + \"px;\\n                         height: \" + (rect.bottom - rect.top + scrollGap(cm) + display.barHeight) + \"px;\\n                         left: \" + (rect.left) + \"px; width: \" + (Math.max(2, rect.right - rect.left)) + \"px;\"));\n      cm.display.lineSpace.appendChild(scrollNode);\n      scrollNode.scrollIntoView(doScroll);\n      cm.display.lineSpace.removeChild(scrollNode);\n    }\n  }\n\n  // Scroll a given position into view (immediately), verifying that\n  // it actually became visible (as line heights are accurately\n  // measured, the position of something may 'drift' during drawing).\n  function scrollPosIntoView(cm, pos, end, margin) {\n    if (margin == null) { margin = 0; }\n    var rect;\n    if (!cm.options.lineWrapping && pos == end) {\n      // Set pos and end to the cursor positions around the character pos sticks to\n      // If pos.sticky == \"before\", that is around pos.ch - 1, otherwise around pos.ch\n      // If pos == Pos(_, 0, \"before\"), pos and end are unchanged\n      end = pos.sticky == \"before\" ? Pos(pos.line, pos.ch + 1, \"before\") : pos;\n      pos = pos.ch ? Pos(pos.line, pos.sticky == \"before\" ? pos.ch - 1 : pos.ch, \"after\") : pos;\n    }\n    for (var limit = 0; limit < 5; limit++) {\n      var changed = false;\n      var coords = cursorCoords(cm, pos);\n      var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);\n      rect = {left: Math.min(coords.left, endCoords.left),\n              top: Math.min(coords.top, endCoords.top) - margin,\n              right: Math.max(coords.left, endCoords.left),\n              bottom: Math.max(coords.bottom, endCoords.bottom) + margin};\n      var scrollPos = calculateScrollPos(cm, rect);\n      var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft;\n      if (scrollPos.scrollTop != null) {\n        updateScrollTop(cm, scrollPos.scrollTop);\n        if (Math.abs(cm.doc.scrollTop - startTop) > 1) { changed = true; }\n      }\n      if (scrollPos.scrollLeft != null) {\n        setScrollLeft(cm, scrollPos.scrollLeft);\n        if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) { changed = true; }\n      }\n      if (!changed) { break }\n    }\n    return rect\n  }\n\n  // Scroll a given set of coordinates into view (immediately).\n  function scrollIntoView(cm, rect) {\n    var scrollPos = calculateScrollPos(cm, rect);\n    if (scrollPos.scrollTop != null) { updateScrollTop(cm, scrollPos.scrollTop); }\n    if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft); }\n  }\n\n  // Calculate a new scroll position needed to scroll the given\n  // rectangle into view. Returns an object with scrollTop and\n  // scrollLeft properties. When these are undefined, the\n  // vertical/horizontal position does not need to be adjusted.\n  function calculateScrollPos(cm, rect) {\n    var display = cm.display, snapMargin = textHeight(cm.display);\n    if (rect.top < 0) { rect.top = 0; }\n    var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;\n    var screen = displayHeight(cm), result = {};\n    if (rect.bottom - rect.top > screen) { rect.bottom = rect.top + screen; }\n    var docBottom = cm.doc.height + paddingVert(display);\n    var atTop = rect.top < snapMargin, atBottom = rect.bottom > docBottom - snapMargin;\n    if (rect.top < screentop) {\n      result.scrollTop = atTop ? 0 : rect.top;\n    } else if (rect.bottom > screentop + screen) {\n      var newTop = Math.min(rect.top, (atBottom ? docBottom : rect.bottom) - screen);\n      if (newTop != screentop) { result.scrollTop = newTop; }\n    }\n\n    var gutterSpace = cm.options.fixedGutter ? 0 : display.gutters.offsetWidth;\n    var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft - gutterSpace;\n    var screenw = displayWidth(cm) - display.gutters.offsetWidth;\n    var tooWide = rect.right - rect.left > screenw;\n    if (tooWide) { rect.right = rect.left + screenw; }\n    if (rect.left < 10)\n      { result.scrollLeft = 0; }\n    else if (rect.left < screenleft)\n      { result.scrollLeft = Math.max(0, rect.left + gutterSpace - (tooWide ? 0 : 10)); }\n    else if (rect.right > screenw + screenleft - 3)\n      { result.scrollLeft = rect.right + (tooWide ? 0 : 10) - screenw; }\n    return result\n  }\n\n  // Store a relative adjustment to the scroll position in the current\n  // operation (to be applied when the operation finishes).\n  function addToScrollTop(cm, top) {\n    if (top == null) { return }\n    resolveScrollToPos(cm);\n    cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top;\n  }\n\n  // Make sure that at the end of the operation the current cursor is\n  // shown.\n  function ensureCursorVisible(cm) {\n    resolveScrollToPos(cm);\n    var cur = cm.getCursor();\n    cm.curOp.scrollToPos = {from: cur, to: cur, margin: cm.options.cursorScrollMargin};\n  }\n\n  function scrollToCoords(cm, x, y) {\n    if (x != null || y != null) { resolveScrollToPos(cm); }\n    if (x != null) { cm.curOp.scrollLeft = x; }\n    if (y != null) { cm.curOp.scrollTop = y; }\n  }\n\n  function scrollToRange(cm, range) {\n    resolveScrollToPos(cm);\n    cm.curOp.scrollToPos = range;\n  }\n\n  // When an operation has its scrollToPos property set, and another\n  // scroll action is applied before the end of the operation, this\n  // 'simulates' scrolling that position into view in a cheap way, so\n  // that the effect of intermediate scroll commands is not ignored.\n  function resolveScrollToPos(cm) {\n    var range = cm.curOp.scrollToPos;\n    if (range) {\n      cm.curOp.scrollToPos = null;\n      var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to);\n      scrollToCoordsRange(cm, from, to, range.margin);\n    }\n  }\n\n  function scrollToCoordsRange(cm, from, to, margin) {\n    var sPos = calculateScrollPos(cm, {\n      left: Math.min(from.left, to.left),\n      top: Math.min(from.top, to.top) - margin,\n      right: Math.max(from.right, to.right),\n      bottom: Math.max(from.bottom, to.bottom) + margin\n    });\n    scrollToCoords(cm, sPos.scrollLeft, sPos.scrollTop);\n  }\n\n  // Sync the scrollable area and scrollbars, ensure the viewport\n  // covers the visible area.\n  function updateScrollTop(cm, val) {\n    if (Math.abs(cm.doc.scrollTop - val) < 2) { return }\n    if (!gecko) { updateDisplaySimple(cm, {top: val}); }\n    setScrollTop(cm, val, true);\n    if (gecko) { updateDisplaySimple(cm); }\n    startWorker(cm, 100);\n  }\n\n  function setScrollTop(cm, val, forceScroll) {\n    val = Math.max(0, Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, val));\n    if (cm.display.scroller.scrollTop == val && !forceScroll) { return }\n    cm.doc.scrollTop = val;\n    cm.display.scrollbars.setScrollTop(val);\n    if (cm.display.scroller.scrollTop != val) { cm.display.scroller.scrollTop = val; }\n  }\n\n  // Sync scroller and scrollbar, ensure the gutter elements are\n  // aligned.\n  function setScrollLeft(cm, val, isScroller, forceScroll) {\n    val = Math.max(0, Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth));\n    if ((isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) && !forceScroll) { return }\n    cm.doc.scrollLeft = val;\n    alignHorizontally(cm);\n    if (cm.display.scroller.scrollLeft != val) { cm.display.scroller.scrollLeft = val; }\n    cm.display.scrollbars.setScrollLeft(val);\n  }\n\n  // SCROLLBARS\n\n  // Prepare DOM reads needed to update the scrollbars. Done in one\n  // shot to minimize update/measure roundtrips.\n  function measureForScrollbars(cm) {\n    var d = cm.display, gutterW = d.gutters.offsetWidth;\n    var docH = Math.round(cm.doc.height + paddingVert(cm.display));\n    return {\n      clientHeight: d.scroller.clientHeight,\n      viewHeight: d.wrapper.clientHeight,\n      scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth,\n      viewWidth: d.wrapper.clientWidth,\n      barLeft: cm.options.fixedGutter ? gutterW : 0,\n      docHeight: docH,\n      scrollHeight: docH + scrollGap(cm) + d.barHeight,\n      nativeBarWidth: d.nativeBarWidth,\n      gutterWidth: gutterW\n    }\n  }\n\n  var NativeScrollbars = function(place, scroll, cm) {\n    this.cm = cm;\n    var vert = this.vert = elt(\"div\", [elt(\"div\", null, null, \"min-width: 1px\")], \"CodeMirror-vscrollbar\");\n    var horiz = this.horiz = elt(\"div\", [elt(\"div\", null, null, \"height: 100%; min-height: 1px\")], \"CodeMirror-hscrollbar\");\n    vert.tabIndex = horiz.tabIndex = -1;\n    place(vert); place(horiz);\n\n    on(vert, \"scroll\", function () {\n      if (vert.clientHeight) { scroll(vert.scrollTop, \"vertical\"); }\n    });\n    on(horiz, \"scroll\", function () {\n      if (horiz.clientWidth) { scroll(horiz.scrollLeft, \"horizontal\"); }\n    });\n\n    this.checkedZeroWidth = false;\n    // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).\n    if (ie && ie_version < 8) { this.horiz.style.minHeight = this.vert.style.minWidth = \"18px\"; }\n  };\n\n  NativeScrollbars.prototype.update = function (measure) {\n    var needsH = measure.scrollWidth > measure.clientWidth + 1;\n    var needsV = measure.scrollHeight > measure.clientHeight + 1;\n    var sWidth = measure.nativeBarWidth;\n\n    if (needsV) {\n      this.vert.style.display = \"block\";\n      this.vert.style.bottom = needsH ? sWidth + \"px\" : \"0\";\n      var totalHeight = measure.viewHeight - (needsH ? sWidth : 0);\n      // A bug in IE8 can cause this value to be negative, so guard it.\n      this.vert.firstChild.style.height =\n        Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + \"px\";\n    } else {\n      this.vert.scrollTop = 0;\n      this.vert.style.display = \"\";\n      this.vert.firstChild.style.height = \"0\";\n    }\n\n    if (needsH) {\n      this.horiz.style.display = \"block\";\n      this.horiz.style.right = needsV ? sWidth + \"px\" : \"0\";\n      this.horiz.style.left = measure.barLeft + \"px\";\n      var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0);\n      this.horiz.firstChild.style.width =\n        Math.max(0, measure.scrollWidth - measure.clientWidth + totalWidth) + \"px\";\n    } else {\n      this.horiz.style.display = \"\";\n      this.horiz.firstChild.style.width = \"0\";\n    }\n\n    if (!this.checkedZeroWidth && measure.clientHeight > 0) {\n      if (sWidth == 0) { this.zeroWidthHack(); }\n      this.checkedZeroWidth = true;\n    }\n\n    return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0}\n  };\n\n  NativeScrollbars.prototype.setScrollLeft = function (pos) {\n    if (this.horiz.scrollLeft != pos) { this.horiz.scrollLeft = pos; }\n    if (this.disableHoriz) { this.enableZeroWidthBar(this.horiz, this.disableHoriz, \"horiz\"); }\n  };\n\n  NativeScrollbars.prototype.setScrollTop = function (pos) {\n    if (this.vert.scrollTop != pos) { this.vert.scrollTop = pos; }\n    if (this.disableVert) { this.enableZeroWidthBar(this.vert, this.disableVert, \"vert\"); }\n  };\n\n  NativeScrollbars.prototype.zeroWidthHack = function () {\n    var w = mac && !mac_geMountainLion ? \"12px\" : \"18px\";\n    this.horiz.style.height = this.vert.style.width = w;\n    this.horiz.style.pointerEvents = this.vert.style.pointerEvents = \"none\";\n    this.disableHoriz = new Delayed;\n    this.disableVert = new Delayed;\n  };\n\n  NativeScrollbars.prototype.enableZeroWidthBar = function (bar, delay, type) {\n    bar.style.pointerEvents = \"auto\";\n    function maybeDisable() {\n      // To find out whether the scrollbar is still visible, we\n      // check whether the element under the pixel in the bottom\n      // right corner of the scrollbar box is the scrollbar box\n      // itself (when the bar is still visible) or its filler child\n      // (when the bar is hidden). If it is still visible, we keep\n      // it enabled, if it's hidden, we disable pointer events.\n      var box = bar.getBoundingClientRect();\n      var elt = type == \"vert\" ? document.elementFromPoint(box.right - 1, (box.top + box.bottom) / 2)\n          : document.elementFromPoint((box.right + box.left) / 2, box.bottom - 1);\n      if (elt != bar) { bar.style.pointerEvents = \"none\"; }\n      else { delay.set(1000, maybeDisable); }\n    }\n    delay.set(1000, maybeDisable);\n  };\n\n  NativeScrollbars.prototype.clear = function () {\n    var parent = this.horiz.parentNode;\n    parent.removeChild(this.horiz);\n    parent.removeChild(this.vert);\n  };\n\n  var NullScrollbars = function () {};\n\n  NullScrollbars.prototype.update = function () { return {bottom: 0, right: 0} };\n  NullScrollbars.prototype.setScrollLeft = function () {};\n  NullScrollbars.prototype.setScrollTop = function () {};\n  NullScrollbars.prototype.clear = function () {};\n\n  function updateScrollbars(cm, measure) {\n    if (!measure) { measure = measureForScrollbars(cm); }\n    var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight;\n    updateScrollbarsInner(cm, measure);\n    for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) {\n      if (startWidth != cm.display.barWidth && cm.options.lineWrapping)\n        { updateHeightsInViewport(cm); }\n      updateScrollbarsInner(cm, measureForScrollbars(cm));\n      startWidth = cm.display.barWidth; startHeight = cm.display.barHeight;\n    }\n  }\n\n  // Re-synchronize the fake scrollbars with the actual size of the\n  // content.\n  function updateScrollbarsInner(cm, measure) {\n    var d = cm.display;\n    var sizes = d.scrollbars.update(measure);\n\n    d.sizer.style.paddingRight = (d.barWidth = sizes.right) + \"px\";\n    d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + \"px\";\n    d.heightForcer.style.borderBottom = sizes.bottom + \"px solid transparent\";\n\n    if (sizes.right && sizes.bottom) {\n      d.scrollbarFiller.style.display = \"block\";\n      d.scrollbarFiller.style.height = sizes.bottom + \"px\";\n      d.scrollbarFiller.style.width = sizes.right + \"px\";\n    } else { d.scrollbarFiller.style.display = \"\"; }\n    if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {\n      d.gutterFiller.style.display = \"block\";\n      d.gutterFiller.style.height = sizes.bottom + \"px\";\n      d.gutterFiller.style.width = measure.gutterWidth + \"px\";\n    } else { d.gutterFiller.style.display = \"\"; }\n  }\n\n  var scrollbarModel = {\"native\": NativeScrollbars, \"null\": NullScrollbars};\n\n  function initScrollbars(cm) {\n    if (cm.display.scrollbars) {\n      cm.display.scrollbars.clear();\n      if (cm.display.scrollbars.addClass)\n        { rmClass(cm.display.wrapper, cm.display.scrollbars.addClass); }\n    }\n\n    cm.display.scrollbars = new scrollbarModel[cm.options.scrollbarStyle](function (node) {\n      cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller);\n      // Prevent clicks in the scrollbars from killing focus\n      on(node, \"mousedown\", function () {\n        if (cm.state.focused) { setTimeout(function () { return cm.display.input.focus(); }, 0); }\n      });\n      node.setAttribute(\"cm-not-content\", \"true\");\n    }, function (pos, axis) {\n      if (axis == \"horizontal\") { setScrollLeft(cm, pos); }\n      else { updateScrollTop(cm, pos); }\n    }, cm);\n    if (cm.display.scrollbars.addClass)\n      { addClass(cm.display.wrapper, cm.display.scrollbars.addClass); }\n  }\n\n  // Operations are used to wrap a series of changes to the editor\n  // state in such a way that each change won't have to update the\n  // cursor and display (which would be awkward, slow, and\n  // error-prone). Instead, display updates are batched and then all\n  // combined and executed at once.\n\n  var nextOpId = 0;\n  // Start a new operation.\n  function startOperation(cm) {\n    cm.curOp = {\n      cm: cm,\n      viewChanged: false,      // Flag that indicates that lines might need to be redrawn\n      startHeight: cm.doc.height, // Used to detect need to update scrollbar\n      forceUpdate: false,      // Used to force a redraw\n      updateInput: 0,       // Whether to reset the input textarea\n      typing: false,           // Whether this reset should be careful to leave existing text (for compositing)\n      changeObjs: null,        // Accumulated changes, for firing change events\n      cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on\n      cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already\n      selectionChanged: false, // Whether the selection needs to be redrawn\n      updateMaxLine: false,    // Set when the widest line needs to be determined anew\n      scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet\n      scrollToPos: null,       // Used to scroll to a specific position\n      focus: false,\n      id: ++nextOpId,          // Unique ID\n      markArrays: null         // Used by addMarkedSpan\n    };\n    pushOperation(cm.curOp);\n  }\n\n  // Finish an operation, updating the display and signalling delayed events\n  function endOperation(cm) {\n    var op = cm.curOp;\n    if (op) { finishOperation(op, function (group) {\n      for (var i = 0; i < group.ops.length; i++)\n        { group.ops[i].cm.curOp = null; }\n      endOperations(group);\n    }); }\n  }\n\n  // The DOM updates done when an operation finishes are batched so\n  // that the minimum number of relayouts are required.\n  function endOperations(group) {\n    var ops = group.ops;\n    for (var i = 0; i < ops.length; i++) // Read DOM\n      { endOperation_R1(ops[i]); }\n    for (var i$1 = 0; i$1 < ops.length; i$1++) // Write DOM (maybe)\n      { endOperation_W1(ops[i$1]); }\n    for (var i$2 = 0; i$2 < ops.length; i$2++) // Read DOM\n      { endOperation_R2(ops[i$2]); }\n    for (var i$3 = 0; i$3 < ops.length; i$3++) // Write DOM (maybe)\n      { endOperation_W2(ops[i$3]); }\n    for (var i$4 = 0; i$4 < ops.length; i$4++) // Read DOM\n      { endOperation_finish(ops[i$4]); }\n  }\n\n  function endOperation_R1(op) {\n    var cm = op.cm, display = cm.display;\n    maybeClipScrollbars(cm);\n    if (op.updateMaxLine) { findMaxLine(cm); }\n\n    op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null ||\n      op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||\n                         op.scrollToPos.to.line >= display.viewTo) ||\n      display.maxLineChanged && cm.options.lineWrapping;\n    op.update = op.mustUpdate &&\n      new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate);\n  }\n\n  function endOperation_W1(op) {\n    op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update);\n  }\n\n  function endOperation_R2(op) {\n    var cm = op.cm, display = cm.display;\n    if (op.updatedDisplay) { updateHeightsInViewport(cm); }\n\n    op.barMeasure = measureForScrollbars(cm);\n\n    // If the max line changed since it was last measured, measure it,\n    // and ensure the document's width matches it.\n    // updateDisplay_W2 will use these properties to do the actual resizing\n    if (display.maxLineChanged && !cm.options.lineWrapping) {\n      op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3;\n      cm.display.sizerWidth = op.adjustWidthTo;\n      op.barMeasure.scrollWidth =\n        Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth);\n      op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm));\n    }\n\n    if (op.updatedDisplay || op.selectionChanged)\n      { op.preparedSelection = display.input.prepareSelection(); }\n  }\n\n  function endOperation_W2(op) {\n    var cm = op.cm;\n\n    if (op.adjustWidthTo != null) {\n      cm.display.sizer.style.minWidth = op.adjustWidthTo + \"px\";\n      if (op.maxScrollLeft < cm.doc.scrollLeft)\n        { setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true); }\n      cm.display.maxLineChanged = false;\n    }\n\n    var takeFocus = op.focus && op.focus == activeElt();\n    if (op.preparedSelection)\n      { cm.display.input.showSelection(op.preparedSelection, takeFocus); }\n    if (op.updatedDisplay || op.startHeight != cm.doc.height)\n      { updateScrollbars(cm, op.barMeasure); }\n    if (op.updatedDisplay)\n      { setDocumentHeight(cm, op.barMeasure); }\n\n    if (op.selectionChanged) { restartBlink(cm); }\n\n    if (cm.state.focused && op.updateInput)\n      { cm.display.input.reset(op.typing); }\n    if (takeFocus) { ensureFocus(op.cm); }\n  }\n\n  function endOperation_finish(op) {\n    var cm = op.cm, display = cm.display, doc = cm.doc;\n\n    if (op.updatedDisplay) { postUpdateDisplay(cm, op.update); }\n\n    // Abort mouse wheel delta measurement, when scrolling explicitly\n    if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos))\n      { display.wheelStartX = display.wheelStartY = null; }\n\n    // Propagate the scroll position to the actual DOM scroller\n    if (op.scrollTop != null) { setScrollTop(cm, op.scrollTop, op.forceScroll); }\n\n    if (op.scrollLeft != null) { setScrollLeft(cm, op.scrollLeft, true, true); }\n    // If we need to scroll a specific position into view, do so.\n    if (op.scrollToPos) {\n      var rect = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),\n                                   clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin);\n      maybeScrollWindow(cm, rect);\n    }\n\n    // Fire events for markers that are hidden/unidden by editing or\n    // undoing\n    var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers;\n    if (hidden) { for (var i = 0; i < hidden.length; ++i)\n      { if (!hidden[i].lines.length) { signal(hidden[i], \"hide\"); } } }\n    if (unhidden) { for (var i$1 = 0; i$1 < unhidden.length; ++i$1)\n      { if (unhidden[i$1].lines.length) { signal(unhidden[i$1], \"unhide\"); } } }\n\n    if (display.wrapper.offsetHeight)\n      { doc.scrollTop = cm.display.scroller.scrollTop; }\n\n    // Fire change events, and delayed event handlers\n    if (op.changeObjs)\n      { signal(cm, \"changes\", cm, op.changeObjs); }\n    if (op.update)\n      { op.update.finish(); }\n  }\n\n  // Run the given function in an operation\n  function runInOp(cm, f) {\n    if (cm.curOp) { return f() }\n    startOperation(cm);\n    try { return f() }\n    finally { endOperation(cm); }\n  }\n  // Wraps a function in an operation. Returns the wrapped function.\n  function operation(cm, f) {\n    return function() {\n      if (cm.curOp) { return f.apply(cm, arguments) }\n      startOperation(cm);\n      try { return f.apply(cm, arguments) }\n      finally { endOperation(cm); }\n    }\n  }\n  // Used to add methods to editor and doc instances, wrapping them in\n  // operations.\n  function methodOp(f) {\n    return function() {\n      if (this.curOp) { return f.apply(this, arguments) }\n      startOperation(this);\n      try { return f.apply(this, arguments) }\n      finally { endOperation(this); }\n    }\n  }\n  function docMethodOp(f) {\n    return function() {\n      var cm = this.cm;\n      if (!cm || cm.curOp) { return f.apply(this, arguments) }\n      startOperation(cm);\n      try { return f.apply(this, arguments) }\n      finally { endOperation(cm); }\n    }\n  }\n\n  // HIGHLIGHT WORKER\n\n  function startWorker(cm, time) {\n    if (cm.doc.highlightFrontier < cm.display.viewTo)\n      { cm.state.highlight.set(time, bind(highlightWorker, cm)); }\n  }\n\n  function highlightWorker(cm) {\n    var doc = cm.doc;\n    if (doc.highlightFrontier >= cm.display.viewTo) { return }\n    var end = +new Date + cm.options.workTime;\n    var context = getContextBefore(cm, doc.highlightFrontier);\n    var changedLines = [];\n\n    doc.iter(context.line, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) {\n      if (context.line >= cm.display.viewFrom) { // Visible\n        var oldStyles = line.styles;\n        var resetState = line.text.length > cm.options.maxHighlightLength ? copyState(doc.mode, context.state) : null;\n        var highlighted = highlightLine(cm, line, context, true);\n        if (resetState) { context.state = resetState; }\n        line.styles = highlighted.styles;\n        var oldCls = line.styleClasses, newCls = highlighted.classes;\n        if (newCls) { line.styleClasses = newCls; }\n        else if (oldCls) { line.styleClasses = null; }\n        var ischange = !oldStyles || oldStyles.length != line.styles.length ||\n          oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass);\n        for (var i = 0; !ischange && i < oldStyles.length; ++i) { ischange = oldStyles[i] != line.styles[i]; }\n        if (ischange) { changedLines.push(context.line); }\n        line.stateAfter = context.save();\n        context.nextLine();\n      } else {\n        if (line.text.length <= cm.options.maxHighlightLength)\n          { processLine(cm, line.text, context); }\n        line.stateAfter = context.line % 5 == 0 ? context.save() : null;\n        context.nextLine();\n      }\n      if (+new Date > end) {\n        startWorker(cm, cm.options.workDelay);\n        return true\n      }\n    });\n    doc.highlightFrontier = context.line;\n    doc.modeFrontier = Math.max(doc.modeFrontier, context.line);\n    if (changedLines.length) { runInOp(cm, function () {\n      for (var i = 0; i < changedLines.length; i++)\n        { regLineChange(cm, changedLines[i], \"text\"); }\n    }); }\n  }\n\n  // DISPLAY DRAWING\n\n  var DisplayUpdate = function(cm, viewport, force) {\n    var display = cm.display;\n\n    this.viewport = viewport;\n    // Store some values that we'll need later (but don't want to force a relayout for)\n    this.visible = visibleLines(display, cm.doc, viewport);\n    this.editorIsHidden = !display.wrapper.offsetWidth;\n    this.wrapperHeight = display.wrapper.clientHeight;\n    this.wrapperWidth = display.wrapper.clientWidth;\n    this.oldDisplayWidth = displayWidth(cm);\n    this.force = force;\n    this.dims = getDimensions(cm);\n    this.events = [];\n  };\n\n  DisplayUpdate.prototype.signal = function (emitter, type) {\n    if (hasHandler(emitter, type))\n      { this.events.push(arguments); }\n  };\n  DisplayUpdate.prototype.finish = function () {\n    for (var i = 0; i < this.events.length; i++)\n      { signal.apply(null, this.events[i]); }\n  };\n\n  function maybeClipScrollbars(cm) {\n    var display = cm.display;\n    if (!display.scrollbarsClipped && display.scroller.offsetWidth) {\n      display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth;\n      display.heightForcer.style.height = scrollGap(cm) + \"px\";\n      display.sizer.style.marginBottom = -display.nativeBarWidth + \"px\";\n      display.sizer.style.borderRightWidth = scrollGap(cm) + \"px\";\n      display.scrollbarsClipped = true;\n    }\n  }\n\n  function selectionSnapshot(cm) {\n    if (cm.hasFocus()) { return null }\n    var active = activeElt();\n    if (!active || !contains(cm.display.lineDiv, active)) { return null }\n    var result = {activeElt: active};\n    if (window.getSelection) {\n      var sel = window.getSelection();\n      if (sel.anchorNode && sel.extend && contains(cm.display.lineDiv, sel.anchorNode)) {\n        result.anchorNode = sel.anchorNode;\n        result.anchorOffset = sel.anchorOffset;\n        result.focusNode = sel.focusNode;\n        result.focusOffset = sel.focusOffset;\n      }\n    }\n    return result\n  }\n\n  function restoreSelection(snapshot) {\n    if (!snapshot || !snapshot.activeElt || snapshot.activeElt == activeElt()) { return }\n    snapshot.activeElt.focus();\n    if (!/^(INPUT|TEXTAREA)$/.test(snapshot.activeElt.nodeName) &&\n        snapshot.anchorNode && contains(document.body, snapshot.anchorNode) && contains(document.body, snapshot.focusNode)) {\n      var sel = window.getSelection(), range = document.createRange();\n      range.setEnd(snapshot.anchorNode, snapshot.anchorOffset);\n      range.collapse(false);\n      sel.removeAllRanges();\n      sel.addRange(range);\n      sel.extend(snapshot.focusNode, snapshot.focusOffset);\n    }\n  }\n\n  // Does the actual updating of the line display. Bails out\n  // (returning false) when there is nothing to be done and forced is\n  // false.\n  function updateDisplayIfNeeded(cm, update) {\n    var display = cm.display, doc = cm.doc;\n\n    if (update.editorIsHidden) {\n      resetView(cm);\n      return false\n    }\n\n    // Bail out if the visible area is already rendered and nothing changed.\n    if (!update.force &&\n        update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo &&\n        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&\n        display.renderedView == display.view && countDirtyView(cm) == 0)\n      { return false }\n\n    if (maybeUpdateLineNumberWidth(cm)) {\n      resetView(cm);\n      update.dims = getDimensions(cm);\n    }\n\n    // Compute a suitable new viewport (from & to)\n    var end = doc.first + doc.size;\n    var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first);\n    var to = Math.min(end, update.visible.to + cm.options.viewportMargin);\n    if (display.viewFrom < from && from - display.viewFrom < 20) { from = Math.max(doc.first, display.viewFrom); }\n    if (display.viewTo > to && display.viewTo - to < 20) { to = Math.min(end, display.viewTo); }\n    if (sawCollapsedSpans) {\n      from = visualLineNo(cm.doc, from);\n      to = visualLineEndNo(cm.doc, to);\n    }\n\n    var different = from != display.viewFrom || to != display.viewTo ||\n      display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth;\n    adjustView(cm, from, to);\n\n    display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));\n    // Position the mover div to align with the current scroll position\n    cm.display.mover.style.top = display.viewOffset + \"px\";\n\n    var toUpdate = countDirtyView(cm);\n    if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view &&\n        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo))\n      { return false }\n\n    // For big changes, we hide the enclosing element during the\n    // update, since that speeds up the operations on most browsers.\n    var selSnapshot = selectionSnapshot(cm);\n    if (toUpdate > 4) { display.lineDiv.style.display = \"none\"; }\n    patchDisplay(cm, display.updateLineNumbers, update.dims);\n    if (toUpdate > 4) { display.lineDiv.style.display = \"\"; }\n    display.renderedView = display.view;\n    // There might have been a widget with a focused element that got\n    // hidden or updated, if so re-focus it.\n    restoreSelection(selSnapshot);\n\n    // Prevent selection and cursors from interfering with the scroll\n    // width and height.\n    removeChildren(display.cursorDiv);\n    removeChildren(display.selectionDiv);\n    display.gutters.style.height = display.sizer.style.minHeight = 0;\n\n    if (different) {\n      display.lastWrapHeight = update.wrapperHeight;\n      display.lastWrapWidth = update.wrapperWidth;\n      startWorker(cm, 400);\n    }\n\n    display.updateLineNumbers = null;\n\n    return true\n  }\n\n  function postUpdateDisplay(cm, update) {\n    var viewport = update.viewport;\n\n    for (var first = true;; first = false) {\n      if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) {\n        // Clip forced viewport to actual scrollable area.\n        if (viewport && viewport.top != null)\n          { viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)}; }\n        // Updated line heights might result in the drawn area not\n        // actually covering the viewport. Keep looping until it does.\n        update.visible = visibleLines(cm.display, cm.doc, viewport);\n        if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo)\n          { break }\n      } else if (first) {\n        update.visible = visibleLines(cm.display, cm.doc, viewport);\n      }\n      if (!updateDisplayIfNeeded(cm, update)) { break }\n      updateHeightsInViewport(cm);\n      var barMeasure = measureForScrollbars(cm);\n      updateSelection(cm);\n      updateScrollbars(cm, barMeasure);\n      setDocumentHeight(cm, barMeasure);\n      update.force = false;\n    }\n\n    update.signal(cm, \"update\", cm);\n    if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) {\n      update.signal(cm, \"viewportChange\", cm, cm.display.viewFrom, cm.display.viewTo);\n      cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo;\n    }\n  }\n\n  function updateDisplaySimple(cm, viewport) {\n    var update = new DisplayUpdate(cm, viewport);\n    if (updateDisplayIfNeeded(cm, update)) {\n      updateHeightsInViewport(cm);\n      postUpdateDisplay(cm, update);\n      var barMeasure = measureForScrollbars(cm);\n      updateSelection(cm);\n      updateScrollbars(cm, barMeasure);\n      setDocumentHeight(cm, barMeasure);\n      update.finish();\n    }\n  }\n\n  // Sync the actual display DOM structure with display.view, removing\n  // nodes for lines that are no longer in view, and creating the ones\n  // that are not there yet, and updating the ones that are out of\n  // date.\n  function patchDisplay(cm, updateNumbersFrom, dims) {\n    var display = cm.display, lineNumbers = cm.options.lineNumbers;\n    var container = display.lineDiv, cur = container.firstChild;\n\n    function rm(node) {\n      var next = node.nextSibling;\n      // Works around a throw-scroll bug in OS X Webkit\n      if (webkit && mac && cm.display.currentWheelTarget == node)\n        { node.style.display = \"none\"; }\n      else\n        { node.parentNode.removeChild(node); }\n      return next\n    }\n\n    var view = display.view, lineN = display.viewFrom;\n    // Loop over the elements in the view, syncing cur (the DOM nodes\n    // in display.lineDiv) with the view as we go.\n    for (var i = 0; i < view.length; i++) {\n      var lineView = view[i];\n      if (lineView.hidden) ; else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet\n        var node = buildLineElement(cm, lineView, lineN, dims);\n        container.insertBefore(node, cur);\n      } else { // Already drawn\n        while (cur != lineView.node) { cur = rm(cur); }\n        var updateNumber = lineNumbers && updateNumbersFrom != null &&\n          updateNumbersFrom <= lineN && lineView.lineNumber;\n        if (lineView.changes) {\n          if (indexOf(lineView.changes, \"gutter\") > -1) { updateNumber = false; }\n          updateLineForChanges(cm, lineView, lineN, dims);\n        }\n        if (updateNumber) {\n          removeChildren(lineView.lineNumber);\n          lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));\n        }\n        cur = lineView.node.nextSibling;\n      }\n      lineN += lineView.size;\n    }\n    while (cur) { cur = rm(cur); }\n  }\n\n  function updateGutterSpace(display) {\n    var width = display.gutters.offsetWidth;\n    display.sizer.style.marginLeft = width + \"px\";\n    // Send an event to consumers responding to changes in gutter width.\n    signalLater(display, \"gutterChanged\", display);\n  }\n\n  function setDocumentHeight(cm, measure) {\n    cm.display.sizer.style.minHeight = measure.docHeight + \"px\";\n    cm.display.heightForcer.style.top = measure.docHeight + \"px\";\n    cm.display.gutters.style.height = (measure.docHeight + cm.display.barHeight + scrollGap(cm)) + \"px\";\n  }\n\n  // Re-align line numbers and gutter marks to compensate for\n  // horizontal scrolling.\n  function alignHorizontally(cm) {\n    var display = cm.display, view = display.view;\n    if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) { return }\n    var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;\n    var gutterW = display.gutters.offsetWidth, left = comp + \"px\";\n    for (var i = 0; i < view.length; i++) { if (!view[i].hidden) {\n      if (cm.options.fixedGutter) {\n        if (view[i].gutter)\n          { view[i].gutter.style.left = left; }\n        if (view[i].gutterBackground)\n          { view[i].gutterBackground.style.left = left; }\n      }\n      var align = view[i].alignable;\n      if (align) { for (var j = 0; j < align.length; j++)\n        { align[j].style.left = left; } }\n    } }\n    if (cm.options.fixedGutter)\n      { display.gutters.style.left = (comp + gutterW) + \"px\"; }\n  }\n\n  // Used to ensure that the line number gutter is still the right\n  // size for the current document size. Returns true when an update\n  // is needed.\n  function maybeUpdateLineNumberWidth(cm) {\n    if (!cm.options.lineNumbers) { return false }\n    var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;\n    if (last.length != display.lineNumChars) {\n      var test = display.measure.appendChild(elt(\"div\", [elt(\"div\", last)],\n                                                 \"CodeMirror-linenumber CodeMirror-gutter-elt\"));\n      var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;\n      display.lineGutter.style.width = \"\";\n      display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1;\n      display.lineNumWidth = display.lineNumInnerWidth + padding;\n      display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;\n      display.lineGutter.style.width = display.lineNumWidth + \"px\";\n      updateGutterSpace(cm.display);\n      return true\n    }\n    return false\n  }\n\n  function getGutters(gutters, lineNumbers) {\n    var result = [], sawLineNumbers = false;\n    for (var i = 0; i < gutters.length; i++) {\n      var name = gutters[i], style = null;\n      if (typeof name != \"string\") { style = name.style; name = name.className; }\n      if (name == \"CodeMirror-linenumbers\") {\n        if (!lineNumbers) { continue }\n        else { sawLineNumbers = true; }\n      }\n      result.push({className: name, style: style});\n    }\n    if (lineNumbers && !sawLineNumbers) { result.push({className: \"CodeMirror-linenumbers\", style: null}); }\n    return result\n  }\n\n  // Rebuild the gutter elements, ensure the margin to the left of the\n  // code matches their width.\n  function renderGutters(display) {\n    var gutters = display.gutters, specs = display.gutterSpecs;\n    removeChildren(gutters);\n    display.lineGutter = null;\n    for (var i = 0; i < specs.length; ++i) {\n      var ref = specs[i];\n      var className = ref.className;\n      var style = ref.style;\n      var gElt = gutters.appendChild(elt(\"div\", null, \"CodeMirror-gutter \" + className));\n      if (style) { gElt.style.cssText = style; }\n      if (className == \"CodeMirror-linenumbers\") {\n        display.lineGutter = gElt;\n        gElt.style.width = (display.lineNumWidth || 1) + \"px\";\n      }\n    }\n    gutters.style.display = specs.length ? \"\" : \"none\";\n    updateGutterSpace(display);\n  }\n\n  function updateGutters(cm) {\n    renderGutters(cm.display);\n    regChange(cm);\n    alignHorizontally(cm);\n  }\n\n  // The display handles the DOM integration, both for input reading\n  // and content drawing. It holds references to DOM nodes and\n  // display-related state.\n\n  function Display(place, doc, input, options) {\n    var d = this;\n    this.input = input;\n\n    // Covers bottom-right square when both scrollbars are present.\n    d.scrollbarFiller = elt(\"div\", null, \"CodeMirror-scrollbar-filler\");\n    d.scrollbarFiller.setAttribute(\"cm-not-content\", \"true\");\n    // Covers bottom of gutter when coverGutterNextToScrollbar is on\n    // and h scrollbar is present.\n    d.gutterFiller = elt(\"div\", null, \"CodeMirror-gutter-filler\");\n    d.gutterFiller.setAttribute(\"cm-not-content\", \"true\");\n    // Will contain the actual code, positioned to cover the viewport.\n    d.lineDiv = eltP(\"div\", null, \"CodeMirror-code\");\n    // Elements are added to these to represent selection and cursors.\n    d.selectionDiv = elt(\"div\", null, null, \"position: relative; z-index: 1\");\n    d.cursorDiv = elt(\"div\", null, \"CodeMirror-cursors\");\n    // A visibility: hidden element used to find the size of things.\n    d.measure = elt(\"div\", null, \"CodeMirror-measure\");\n    // When lines outside of the viewport are measured, they are drawn in this.\n    d.lineMeasure = elt(\"div\", null, \"CodeMirror-measure\");\n    // Wraps everything that needs to exist inside the vertically-padded coordinate system\n    d.lineSpace = eltP(\"div\", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],\n                      null, \"position: relative; outline: none\");\n    var lines = eltP(\"div\", [d.lineSpace], \"CodeMirror-lines\");\n    // Moved around its parent to cover visible view.\n    d.mover = elt(\"div\", [lines], null, \"position: relative\");\n    // Set to the height of the document, allowing scrolling.\n    d.sizer = elt(\"div\", [d.mover], \"CodeMirror-sizer\");\n    d.sizerWidth = null;\n    // Behavior of elts with overflow: auto and padding is\n    // inconsistent across browsers. This is used to ensure the\n    // scrollable area is big enough.\n    d.heightForcer = elt(\"div\", null, null, \"position: absolute; height: \" + scrollerGap + \"px; width: 1px;\");\n    // Will contain the gutters, if any.\n    d.gutters = elt(\"div\", null, \"CodeMirror-gutters\");\n    d.lineGutter = null;\n    // Actual scrollable element.\n    d.scroller = elt(\"div\", [d.sizer, d.heightForcer, d.gutters], \"CodeMirror-scroll\");\n    d.scroller.setAttribute(\"tabIndex\", \"-1\");\n    // The element in which the editor lives.\n    d.wrapper = elt(\"div\", [d.scrollbarFiller, d.gutterFiller, d.scroller], \"CodeMirror\");\n\n    // This attribute is respected by automatic translation systems such as Google Translate,\n    // and may also be respected by tools used by human translators.\n    d.wrapper.setAttribute('translate', 'no');\n\n    // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)\n    if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }\n    if (!webkit && !(gecko && mobile)) { d.scroller.draggable = true; }\n\n    if (place) {\n      if (place.appendChild) { place.appendChild(d.wrapper); }\n      else { place(d.wrapper); }\n    }\n\n    // Current rendered range (may be bigger than the view window).\n    d.viewFrom = d.viewTo = doc.first;\n    d.reportedViewFrom = d.reportedViewTo = doc.first;\n    // Information about the rendered lines.\n    d.view = [];\n    d.renderedView = null;\n    // Holds info about a single rendered line when it was rendered\n    // for measurement, while not in view.\n    d.externalMeasured = null;\n    // Empty space (in pixels) above the view\n    d.viewOffset = 0;\n    d.lastWrapHeight = d.lastWrapWidth = 0;\n    d.updateLineNumbers = null;\n\n    d.nativeBarWidth = d.barHeight = d.barWidth = 0;\n    d.scrollbarsClipped = false;\n\n    // Used to only resize the line number gutter when necessary (when\n    // the amount of lines crosses a boundary that makes its width change)\n    d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;\n    // Set to true when a non-horizontal-scrolling line widget is\n    // added. As an optimization, line widget aligning is skipped when\n    // this is false.\n    d.alignWidgets = false;\n\n    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;\n\n    // Tracks the maximum line length so that the horizontal scrollbar\n    // can be kept static when scrolling.\n    d.maxLine = null;\n    d.maxLineLength = 0;\n    d.maxLineChanged = false;\n\n    // Used for measuring wheel scrolling granularity\n    d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;\n\n    // True when shift is held down.\n    d.shift = false;\n\n    // Used to track whether anything happened since the context menu\n    // was opened.\n    d.selForContextMenu = null;\n\n    d.activeTouch = null;\n\n    d.gutterSpecs = getGutters(options.gutters, options.lineNumbers);\n    renderGutters(d);\n\n    input.init(d);\n  }\n\n  // Since the delta values reported on mouse wheel events are\n  // unstandardized between browsers and even browser versions, and\n  // generally horribly unpredictable, this code starts by measuring\n  // the scroll effect that the first few mouse wheel events have,\n  // and, from that, detects the way it can convert deltas to pixel\n  // offsets afterwards.\n  //\n  // The reason we want to know the amount a wheel event will scroll\n  // is that it gives us a chance to update the display before the\n  // actual scrolling happens, reducing flickering.\n\n  var wheelSamples = 0, wheelPixelsPerUnit = null;\n  // Fill in a browser-detected starting value on browsers where we\n  // know one. These don't have to be accurate -- the result of them\n  // being wrong would just be a slight flicker on the first wheel\n  // scroll (if it is large enough).\n  if (ie) { wheelPixelsPerUnit = -.53; }\n  else if (gecko) { wheelPixelsPerUnit = 15; }\n  else if (chrome) { wheelPixelsPerUnit = -.7; }\n  else if (safari) { wheelPixelsPerUnit = -1/3; }\n\n  function wheelEventDelta(e) {\n    var dx = e.wheelDeltaX, dy = e.wheelDeltaY;\n    if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) { dx = e.detail; }\n    if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) { dy = e.detail; }\n    else if (dy == null) { dy = e.wheelDelta; }\n    return {x: dx, y: dy}\n  }\n  function wheelEventPixels(e) {\n    var delta = wheelEventDelta(e);\n    delta.x *= wheelPixelsPerUnit;\n    delta.y *= wheelPixelsPerUnit;\n    return delta\n  }\n\n  function onScrollWheel(cm, e) {\n    var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y;\n    var pixelsPerUnit = wheelPixelsPerUnit;\n    if (e.deltaMode === 0) {\n      dx = e.deltaX;\n      dy = e.deltaY;\n      pixelsPerUnit = 1;\n    }\n\n    var display = cm.display, scroll = display.scroller;\n    // Quit if there's nothing to scroll here\n    var canScrollX = scroll.scrollWidth > scroll.clientWidth;\n    var canScrollY = scroll.scrollHeight > scroll.clientHeight;\n    if (!(dx && canScrollX || dy && canScrollY)) { return }\n\n    // Webkit browsers on OS X abort momentum scrolls when the target\n    // of the scroll event is removed from the scrollable element.\n    // This hack (see related code in patchDisplay) makes sure the\n    // element is kept around.\n    if (dy && mac && webkit) {\n      outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {\n        for (var i = 0; i < view.length; i++) {\n          if (view[i].node == cur) {\n            cm.display.currentWheelTarget = cur;\n            break outer\n          }\n        }\n      }\n    }\n\n    // On some browsers, horizontal scrolling will cause redraws to\n    // happen before the gutter has been realigned, causing it to\n    // wriggle around in a most unseemly way. When we have an\n    // estimated pixels/delta value, we just handle horizontal\n    // scrolling entirely here. It'll be slightly off from native, but\n    // better than glitching out.\n    if (dx && !gecko && !presto && pixelsPerUnit != null) {\n      if (dy && canScrollY)\n        { updateScrollTop(cm, Math.max(0, scroll.scrollTop + dy * pixelsPerUnit)); }\n      setScrollLeft(cm, Math.max(0, scroll.scrollLeft + dx * pixelsPerUnit));\n      // Only prevent default scrolling if vertical scrolling is\n      // actually possible. Otherwise, it causes vertical scroll\n      // jitter on OSX trackpads when deltaX is small and deltaY\n      // is large (issue #3579)\n      if (!dy || (dy && canScrollY))\n        { e_preventDefault(e); }\n      display.wheelStartX = null; // Abort measurement, if in progress\n      return\n    }\n\n    // 'Project' the visible viewport to cover the area that is being\n    // scrolled into view (if we know enough to estimate it).\n    if (dy && pixelsPerUnit != null) {\n      var pixels = dy * pixelsPerUnit;\n      var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;\n      if (pixels < 0) { top = Math.max(0, top + pixels - 50); }\n      else { bot = Math.min(cm.doc.height, bot + pixels + 50); }\n      updateDisplaySimple(cm, {top: top, bottom: bot});\n    }\n\n    if (wheelSamples < 20 && e.deltaMode !== 0) {\n      if (display.wheelStartX == null) {\n        display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop;\n        display.wheelDX = dx; display.wheelDY = dy;\n        setTimeout(function () {\n          if (display.wheelStartX == null) { return }\n          var movedX = scroll.scrollLeft - display.wheelStartX;\n          var movedY = scroll.scrollTop - display.wheelStartY;\n          var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||\n            (movedX && display.wheelDX && movedX / display.wheelDX);\n          display.wheelStartX = display.wheelStartY = null;\n          if (!sample) { return }\n          wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);\n          ++wheelSamples;\n        }, 200);\n      } else {\n        display.wheelDX += dx; display.wheelDY += dy;\n      }\n    }\n  }\n\n  // Selection objects are immutable. A new one is created every time\n  // the selection changes. A selection is one or more non-overlapping\n  // (and non-touching) ranges, sorted, and an integer that indicates\n  // which one is the primary selection (the one that's scrolled into\n  // view, that getCursor returns, etc).\n  var Selection = function(ranges, primIndex) {\n    this.ranges = ranges;\n    this.primIndex = primIndex;\n  };\n\n  Selection.prototype.primary = function () { return this.ranges[this.primIndex] };\n\n  Selection.prototype.equals = function (other) {\n    if (other == this) { return true }\n    if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) { return false }\n    for (var i = 0; i < this.ranges.length; i++) {\n      var here = this.ranges[i], there = other.ranges[i];\n      if (!equalCursorPos(here.anchor, there.anchor) || !equalCursorPos(here.head, there.head)) { return false }\n    }\n    return true\n  };\n\n  Selection.prototype.deepCopy = function () {\n    var out = [];\n    for (var i = 0; i < this.ranges.length; i++)\n      { out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head)); }\n    return new Selection(out, this.primIndex)\n  };\n\n  Selection.prototype.somethingSelected = function () {\n    for (var i = 0; i < this.ranges.length; i++)\n      { if (!this.ranges[i].empty()) { return true } }\n    return false\n  };\n\n  Selection.prototype.contains = function (pos, end) {\n    if (!end) { end = pos; }\n    for (var i = 0; i < this.ranges.length; i++) {\n      var range = this.ranges[i];\n      if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)\n        { return i }\n    }\n    return -1\n  };\n\n  var Range = function(anchor, head) {\n    this.anchor = anchor; this.head = head;\n  };\n\n  Range.prototype.from = function () { return minPos(this.anchor, this.head) };\n  Range.prototype.to = function () { return maxPos(this.anchor, this.head) };\n  Range.prototype.empty = function () { return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch };\n\n  // Take an unsorted, potentially overlapping set of ranges, and\n  // build a selection out of it. 'Consumes' ranges array (modifying\n  // it).\n  function normalizeSelection(cm, ranges, primIndex) {\n    var mayTouch = cm && cm.options.selectionsMayTouch;\n    var prim = ranges[primIndex];\n    ranges.sort(function (a, b) { return cmp(a.from(), b.from()); });\n    primIndex = indexOf(ranges, prim);\n    for (var i = 1; i < ranges.length; i++) {\n      var cur = ranges[i], prev = ranges[i - 1];\n      var diff = cmp(prev.to(), cur.from());\n      if (mayTouch && !cur.empty() ? diff > 0 : diff >= 0) {\n        var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to());\n        var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;\n        if (i <= primIndex) { --primIndex; }\n        ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));\n      }\n    }\n    return new Selection(ranges, primIndex)\n  }\n\n  function simpleSelection(anchor, head) {\n    return new Selection([new Range(anchor, head || anchor)], 0)\n  }\n\n  // Compute the position of the end of a change (its 'to' property\n  // refers to the pre-change end).\n  function changeEnd(change) {\n    if (!change.text) { return change.to }\n    return Pos(change.from.line + change.text.length - 1,\n               lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0))\n  }\n\n  // Adjust a position to refer to the post-change position of the\n  // same text, or the end of the change if the change covers it.\n  function adjustForChange(pos, change) {\n    if (cmp(pos, change.from) < 0) { return pos }\n    if (cmp(pos, change.to) <= 0) { return changeEnd(change) }\n\n    var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;\n    if (pos.line == change.to.line) { ch += changeEnd(change).ch - change.to.ch; }\n    return Pos(line, ch)\n  }\n\n  function computeSelAfterChange(doc, change) {\n    var out = [];\n    for (var i = 0; i < doc.sel.ranges.length; i++) {\n      var range = doc.sel.ranges[i];\n      out.push(new Range(adjustForChange(range.anchor, change),\n                         adjustForChange(range.head, change)));\n    }\n    return normalizeSelection(doc.cm, out, doc.sel.primIndex)\n  }\n\n  function offsetPos(pos, old, nw) {\n    if (pos.line == old.line)\n      { return Pos(nw.line, pos.ch - old.ch + nw.ch) }\n    else\n      { return Pos(nw.line + (pos.line - old.line), pos.ch) }\n  }\n\n  // Used by replaceSelections to allow moving the selection to the\n  // start or around the replaced test. Hint may be \"start\" or \"around\".\n  function computeReplacedSel(doc, changes, hint) {\n    var out = [];\n    var oldPrev = Pos(doc.first, 0), newPrev = oldPrev;\n    for (var i = 0; i < changes.length; i++) {\n      var change = changes[i];\n      var from = offsetPos(change.from, oldPrev, newPrev);\n      var to = offsetPos(changeEnd(change), oldPrev, newPrev);\n      oldPrev = change.to;\n      newPrev = to;\n      if (hint == \"around\") {\n        var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0;\n        out[i] = new Range(inv ? to : from, inv ? from : to);\n      } else {\n        out[i] = new Range(from, from);\n      }\n    }\n    return new Selection(out, doc.sel.primIndex)\n  }\n\n  // Used to get the editor into a consistent state again when options change.\n\n  function loadMode(cm) {\n    cm.doc.mode = getMode(cm.options, cm.doc.modeOption);\n    resetModeState(cm);\n  }\n\n  function resetModeState(cm) {\n    cm.doc.iter(function (line) {\n      if (line.stateAfter) { line.stateAfter = null; }\n      if (line.styles) { line.styles = null; }\n    });\n    cm.doc.modeFrontier = cm.doc.highlightFrontier = cm.doc.first;\n    startWorker(cm, 100);\n    cm.state.modeGen++;\n    if (cm.curOp) { regChange(cm); }\n  }\n\n  // DOCUMENT DATA STRUCTURE\n\n  // By default, updates that start and end at the beginning of a line\n  // are treated specially, in order to make the association of line\n  // widgets and marker elements with the text behave more intuitive.\n  function isWholeLineUpdate(doc, change) {\n    return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == \"\" &&\n      (!doc.cm || doc.cm.options.wholeLineUpdateBefore)\n  }\n\n  // Perform a change on the document data structure.\n  function updateDoc(doc, change, markedSpans, estimateHeight) {\n    function spansFor(n) {return markedSpans ? markedSpans[n] : null}\n    function update(line, text, spans) {\n      updateLine(line, text, spans, estimateHeight);\n      signalLater(line, \"change\", line, change);\n    }\n    function linesFor(start, end) {\n      var result = [];\n      for (var i = start; i < end; ++i)\n        { result.push(new Line(text[i], spansFor(i), estimateHeight)); }\n      return result\n    }\n\n    var from = change.from, to = change.to, text = change.text;\n    var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);\n    var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;\n\n    // Adjust the line structure\n    if (change.full) {\n      doc.insert(0, linesFor(0, text.length));\n      doc.remove(text.length, doc.size - text.length);\n    } else if (isWholeLineUpdate(doc, change)) {\n      // This is a whole-line replace. Treated specially to make\n      // sure line objects move the way they are supposed to.\n      var added = linesFor(0, text.length - 1);\n      update(lastLine, lastLine.text, lastSpans);\n      if (nlines) { doc.remove(from.line, nlines); }\n      if (added.length) { doc.insert(from.line, added); }\n    } else if (firstLine == lastLine) {\n      if (text.length == 1) {\n        update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);\n      } else {\n        var added$1 = linesFor(1, text.length - 1);\n        added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight));\n        update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));\n        doc.insert(from.line + 1, added$1);\n      }\n    } else if (text.length == 1) {\n      update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));\n      doc.remove(from.line + 1, nlines);\n    } else {\n      update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));\n      update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);\n      var added$2 = linesFor(1, text.length - 1);\n      if (nlines > 1) { doc.remove(from.line + 1, nlines - 1); }\n      doc.insert(from.line + 1, added$2);\n    }\n\n    signalLater(doc, \"change\", doc, change);\n  }\n\n  // Call f for all linked documents.\n  function linkedDocs(doc, f, sharedHistOnly) {\n    function propagate(doc, skip, sharedHist) {\n      if (doc.linked) { for (var i = 0; i < doc.linked.length; ++i) {\n        var rel = doc.linked[i];\n        if (rel.doc == skip) { continue }\n        var shared = sharedHist && rel.sharedHist;\n        if (sharedHistOnly && !shared) { continue }\n        f(rel.doc, shared);\n        propagate(rel.doc, doc, shared);\n      } }\n    }\n    propagate(doc, null, true);\n  }\n\n  // Attach a document to an editor.\n  function attachDoc(cm, doc) {\n    if (doc.cm) { throw new Error(\"This document is already in use.\") }\n    cm.doc = doc;\n    doc.cm = cm;\n    estimateLineHeights(cm);\n    loadMode(cm);\n    setDirectionClass(cm);\n    cm.options.direction = doc.direction;\n    if (!cm.options.lineWrapping) { findMaxLine(cm); }\n    cm.options.mode = doc.modeOption;\n    regChange(cm);\n  }\n\n  function setDirectionClass(cm) {\n  (cm.doc.direction == \"rtl\" ? addClass : rmClass)(cm.display.lineDiv, \"CodeMirror-rtl\");\n  }\n\n  function directionChanged(cm) {\n    runInOp(cm, function () {\n      setDirectionClass(cm);\n      regChange(cm);\n    });\n  }\n\n  function History(prev) {\n    // Arrays of change events and selections. Doing something adds an\n    // event to done and clears undo. Undoing moves events from done\n    // to undone, redoing moves them in the other direction.\n    this.done = []; this.undone = [];\n    this.undoDepth = prev ? prev.undoDepth : Infinity;\n    // Used to track when changes can be merged into a single undo\n    // event\n    this.lastModTime = this.lastSelTime = 0;\n    this.lastOp = this.lastSelOp = null;\n    this.lastOrigin = this.lastSelOrigin = null;\n    // Used by the isClean() method\n    this.generation = this.maxGeneration = prev ? prev.maxGeneration : 1;\n  }\n\n  // Create a history change event from an updateDoc-style change\n  // object.\n  function historyChangeFromChange(doc, change) {\n    var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)};\n    attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);\n    linkedDocs(doc, function (doc) { return attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); }, true);\n    return histChange\n  }\n\n  // Pop all selection events off the end of a history array. Stop at\n  // a change event.\n  function clearSelectionEvents(array) {\n    while (array.length) {\n      var last = lst(array);\n      if (last.ranges) { array.pop(); }\n      else { break }\n    }\n  }\n\n  // Find the top change event in the history. Pop off selection\n  // events that are in the way.\n  function lastChangeEvent(hist, force) {\n    if (force) {\n      clearSelectionEvents(hist.done);\n      return lst(hist.done)\n    } else if (hist.done.length && !lst(hist.done).ranges) {\n      return lst(hist.done)\n    } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {\n      hist.done.pop();\n      return lst(hist.done)\n    }\n  }\n\n  // Register a change in the history. Merges changes that are within\n  // a single operation, or are close together with an origin that\n  // allows merging (starting with \"+\") into a single event.\n  function addChangeToHistory(doc, change, selAfter, opId) {\n    var hist = doc.history;\n    hist.undone.length = 0;\n    var time = +new Date, cur;\n    var last;\n\n    if ((hist.lastOp == opId ||\n         hist.lastOrigin == change.origin && change.origin &&\n         ((change.origin.charAt(0) == \"+\" && hist.lastModTime > time - (doc.cm ? doc.cm.options.historyEventDelay : 500)) ||\n          change.origin.charAt(0) == \"*\")) &&\n        (cur = lastChangeEvent(hist, hist.lastOp == opId))) {\n      // Merge this change into the last event\n      last = lst(cur.changes);\n      if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {\n        // Optimized case for simple insertion -- don't want to add\n        // new changesets for every character typed\n        last.to = changeEnd(change);\n      } else {\n        // Add new sub-event\n        cur.changes.push(historyChangeFromChange(doc, change));\n      }\n    } else {\n      // Can not be merged, start a new event.\n      var before = lst(hist.done);\n      if (!before || !before.ranges)\n        { pushSelectionToHistory(doc.sel, hist.done); }\n      cur = {changes: [historyChangeFromChange(doc, change)],\n             generation: hist.generation};\n      hist.done.push(cur);\n      while (hist.done.length > hist.undoDepth) {\n        hist.done.shift();\n        if (!hist.done[0].ranges) { hist.done.shift(); }\n      }\n    }\n    hist.done.push(selAfter);\n    hist.generation = ++hist.maxGeneration;\n    hist.lastModTime = hist.lastSelTime = time;\n    hist.lastOp = hist.lastSelOp = opId;\n    hist.lastOrigin = hist.lastSelOrigin = change.origin;\n\n    if (!last) { signal(doc, \"historyAdded\"); }\n  }\n\n  function selectionEventCanBeMerged(doc, origin, prev, sel) {\n    var ch = origin.charAt(0);\n    return ch == \"*\" ||\n      ch == \"+\" &&\n      prev.ranges.length == sel.ranges.length &&\n      prev.somethingSelected() == sel.somethingSelected() &&\n      new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500)\n  }\n\n  // Called whenever the selection changes, sets the new selection as\n  // the pending selection in the history, and pushes the old pending\n  // selection into the 'done' array when it was significantly\n  // different (in number of selected ranges, emptiness, or time).\n  function addSelectionToHistory(doc, sel, opId, options) {\n    var hist = doc.history, origin = options && options.origin;\n\n    // A new event is started when the previous origin does not match\n    // the current, or the origins don't allow matching. Origins\n    // starting with * are always merged, those starting with + are\n    // merged when similar and close together in time.\n    if (opId == hist.lastSelOp ||\n        (origin && hist.lastSelOrigin == origin &&\n         (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||\n          selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))\n      { hist.done[hist.done.length - 1] = sel; }\n    else\n      { pushSelectionToHistory(sel, hist.done); }\n\n    hist.lastSelTime = +new Date;\n    hist.lastSelOrigin = origin;\n    hist.lastSelOp = opId;\n    if (options && options.clearRedo !== false)\n      { clearSelectionEvents(hist.undone); }\n  }\n\n  function pushSelectionToHistory(sel, dest) {\n    var top = lst(dest);\n    if (!(top && top.ranges && top.equals(sel)))\n      { dest.push(sel); }\n  }\n\n  // Used to store marked span information in the history.\n  function attachLocalSpans(doc, change, from, to) {\n    var existing = change[\"spans_\" + doc.id], n = 0;\n    doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function (line) {\n      if (line.markedSpans)\n        { (existing || (existing = change[\"spans_\" + doc.id] = {}))[n] = line.markedSpans; }\n      ++n;\n    });\n  }\n\n  // When un/re-doing restores text containing marked spans, those\n  // that have been explicitly cleared should not be restored.\n  function removeClearedSpans(spans) {\n    if (!spans) { return null }\n    var out;\n    for (var i = 0; i < spans.length; ++i) {\n      if (spans[i].marker.explicitlyCleared) { if (!out) { out = spans.slice(0, i); } }\n      else if (out) { out.push(spans[i]); }\n    }\n    return !out ? spans : out.length ? out : null\n  }\n\n  // Retrieve and filter the old marked spans stored in a change event.\n  function getOldSpans(doc, change) {\n    var found = change[\"spans_\" + doc.id];\n    if (!found) { return null }\n    var nw = [];\n    for (var i = 0; i < change.text.length; ++i)\n      { nw.push(removeClearedSpans(found[i])); }\n    return nw\n  }\n\n  // Used for un/re-doing changes from the history. Combines the\n  // result of computing the existing spans with the set of spans that\n  // existed in the history (so that deleting around a span and then\n  // undoing brings back the span).\n  function mergeOldSpans(doc, change) {\n    var old = getOldSpans(doc, change);\n    var stretched = stretchSpansOverChange(doc, change);\n    if (!old) { return stretched }\n    if (!stretched) { return old }\n\n    for (var i = 0; i < old.length; ++i) {\n      var oldCur = old[i], stretchCur = stretched[i];\n      if (oldCur && stretchCur) {\n        spans: for (var j = 0; j < stretchCur.length; ++j) {\n          var span = stretchCur[j];\n          for (var k = 0; k < oldCur.length; ++k)\n            { if (oldCur[k].marker == span.marker) { continue spans } }\n          oldCur.push(span);\n        }\n      } else if (stretchCur) {\n        old[i] = stretchCur;\n      }\n    }\n    return old\n  }\n\n  // Used both to provide a JSON-safe object in .getHistory, and, when\n  // detaching a document, to split the history in two\n  function copyHistoryArray(events, newGroup, instantiateSel) {\n    var copy = [];\n    for (var i = 0; i < events.length; ++i) {\n      var event = events[i];\n      if (event.ranges) {\n        copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event);\n        continue\n      }\n      var changes = event.changes, newChanges = [];\n      copy.push({changes: newChanges});\n      for (var j = 0; j < changes.length; ++j) {\n        var change = changes[j], m = (void 0);\n        newChanges.push({from: change.from, to: change.to, text: change.text});\n        if (newGroup) { for (var prop in change) { if (m = prop.match(/^spans_(\\d+)$/)) {\n          if (indexOf(newGroup, Number(m[1])) > -1) {\n            lst(newChanges)[prop] = change[prop];\n            delete change[prop];\n          }\n        } } }\n      }\n    }\n    return copy\n  }\n\n  // The 'scroll' parameter given to many of these indicated whether\n  // the new cursor position should be scrolled into view after\n  // modifying the selection.\n\n  // If shift is held or the extend flag is set, extends a range to\n  // include a given position (and optionally a second position).\n  // Otherwise, simply returns the range between the given positions.\n  // Used for cursor motion and such.\n  function extendRange(range, head, other, extend) {\n    if (extend) {\n      var anchor = range.anchor;\n      if (other) {\n        var posBefore = cmp(head, anchor) < 0;\n        if (posBefore != (cmp(other, anchor) < 0)) {\n          anchor = head;\n          head = other;\n        } else if (posBefore != (cmp(head, other) < 0)) {\n          head = other;\n        }\n      }\n      return new Range(anchor, head)\n    } else {\n      return new Range(other || head, head)\n    }\n  }\n\n  // Extend the primary selection range, discard the rest.\n  function extendSelection(doc, head, other, options, extend) {\n    if (extend == null) { extend = doc.cm && (doc.cm.display.shift || doc.extend); }\n    setSelection(doc, new Selection([extendRange(doc.sel.primary(), head, other, extend)], 0), options);\n  }\n\n  // Extend all selections (pos is an array of selections with length\n  // equal the number of selections)\n  function extendSelections(doc, heads, options) {\n    var out = [];\n    var extend = doc.cm && (doc.cm.display.shift || doc.extend);\n    for (var i = 0; i < doc.sel.ranges.length; i++)\n      { out[i] = extendRange(doc.sel.ranges[i], heads[i], null, extend); }\n    var newSel = normalizeSelection(doc.cm, out, doc.sel.primIndex);\n    setSelection(doc, newSel, options);\n  }\n\n  // Updates a single range in the selection.\n  function replaceOneSelection(doc, i, range, options) {\n    var ranges = doc.sel.ranges.slice(0);\n    ranges[i] = range;\n    setSelection(doc, normalizeSelection(doc.cm, ranges, doc.sel.primIndex), options);\n  }\n\n  // Reset the selection to a single range.\n  function setSimpleSelection(doc, anchor, head, options) {\n    setSelection(doc, simpleSelection(anchor, head), options);\n  }\n\n  // Give beforeSelectionChange handlers a change to influence a\n  // selection update.\n  function filterSelectionChange(doc, sel, options) {\n    var obj = {\n      ranges: sel.ranges,\n      update: function(ranges) {\n        this.ranges = [];\n        for (var i = 0; i < ranges.length; i++)\n          { this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),\n                                     clipPos(doc, ranges[i].head)); }\n      },\n      origin: options && options.origin\n    };\n    signal(doc, \"beforeSelectionChange\", doc, obj);\n    if (doc.cm) { signal(doc.cm, \"beforeSelectionChange\", doc.cm, obj); }\n    if (obj.ranges != sel.ranges) { return normalizeSelection(doc.cm, obj.ranges, obj.ranges.length - 1) }\n    else { return sel }\n  }\n\n  function setSelectionReplaceHistory(doc, sel, options) {\n    var done = doc.history.done, last = lst(done);\n    if (last && last.ranges) {\n      done[done.length - 1] = sel;\n      setSelectionNoUndo(doc, sel, options);\n    } else {\n      setSelection(doc, sel, options);\n    }\n  }\n\n  // Set a new selection.\n  function setSelection(doc, sel, options) {\n    setSelectionNoUndo(doc, sel, options);\n    addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);\n  }\n\n  function setSelectionNoUndo(doc, sel, options) {\n    if (hasHandler(doc, \"beforeSelectionChange\") || doc.cm && hasHandler(doc.cm, \"beforeSelectionChange\"))\n      { sel = filterSelectionChange(doc, sel, options); }\n\n    var bias = options && options.bias ||\n      (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1);\n    setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));\n\n    if (!(options && options.scroll === false) && doc.cm && doc.cm.getOption(\"readOnly\") != \"nocursor\")\n      { ensureCursorVisible(doc.cm); }\n  }\n\n  function setSelectionInner(doc, sel) {\n    if (sel.equals(doc.sel)) { return }\n\n    doc.sel = sel;\n\n    if (doc.cm) {\n      doc.cm.curOp.updateInput = 1;\n      doc.cm.curOp.selectionChanged = true;\n      signalCursorActivity(doc.cm);\n    }\n    signalLater(doc, \"cursorActivity\", doc);\n  }\n\n  // Verify that the selection does not partially select any atomic\n  // marked ranges.\n  function reCheckSelection(doc) {\n    setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false));\n  }\n\n  // Return a selection that does not partially select any atomic\n  // ranges.\n  function skipAtomicInSelection(doc, sel, bias, mayClear) {\n    var out;\n    for (var i = 0; i < sel.ranges.length; i++) {\n      var range = sel.ranges[i];\n      var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i];\n      var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear);\n      var newHead = skipAtomic(doc, range.head, old && old.head, bias, mayClear);\n      if (out || newAnchor != range.anchor || newHead != range.head) {\n        if (!out) { out = sel.ranges.slice(0, i); }\n        out[i] = new Range(newAnchor, newHead);\n      }\n    }\n    return out ? normalizeSelection(doc.cm, out, sel.primIndex) : sel\n  }\n\n  function skipAtomicInner(doc, pos, oldPos, dir, mayClear) {\n    var line = getLine(doc, pos.line);\n    if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {\n      var sp = line.markedSpans[i], m = sp.marker;\n\n      // Determine if we should prevent the cursor being placed to the left/right of an atomic marker\n      // Historically this was determined using the inclusiveLeft/Right option, but the new way to control it\n      // is with selectLeft/Right\n      var preventCursorLeft = (\"selectLeft\" in m) ? !m.selectLeft : m.inclusiveLeft;\n      var preventCursorRight = (\"selectRight\" in m) ? !m.selectRight : m.inclusiveRight;\n\n      if ((sp.from == null || (preventCursorLeft ? sp.from <= pos.ch : sp.from < pos.ch)) &&\n          (sp.to == null || (preventCursorRight ? sp.to >= pos.ch : sp.to > pos.ch))) {\n        if (mayClear) {\n          signal(m, \"beforeCursorEnter\");\n          if (m.explicitlyCleared) {\n            if (!line.markedSpans) { break }\n            else {--i; continue}\n          }\n        }\n        if (!m.atomic) { continue }\n\n        if (oldPos) {\n          var near = m.find(dir < 0 ? 1 : -1), diff = (void 0);\n          if (dir < 0 ? preventCursorRight : preventCursorLeft)\n            { near = movePos(doc, near, -dir, near && near.line == pos.line ? line : null); }\n          if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0))\n            { return skipAtomicInner(doc, near, pos, dir, mayClear) }\n        }\n\n        var far = m.find(dir < 0 ? -1 : 1);\n        if (dir < 0 ? preventCursorLeft : preventCursorRight)\n          { far = movePos(doc, far, dir, far.line == pos.line ? line : null); }\n        return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null\n      }\n    } }\n    return pos\n  }\n\n  // Ensure a given position is not inside an atomic range.\n  function skipAtomic(doc, pos, oldPos, bias, mayClear) {\n    var dir = bias || 1;\n    var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) ||\n        (!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) ||\n        skipAtomicInner(doc, pos, oldPos, -dir, mayClear) ||\n        (!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true));\n    if (!found) {\n      doc.cantEdit = true;\n      return Pos(doc.first, 0)\n    }\n    return found\n  }\n\n  function movePos(doc, pos, dir, line) {\n    if (dir < 0 && pos.ch == 0) {\n      if (pos.line > doc.first) { return clipPos(doc, Pos(pos.line - 1)) }\n      else { return null }\n    } else if (dir > 0 && pos.ch == (line || getLine(doc, pos.line)).text.length) {\n      if (pos.line < doc.first + doc.size - 1) { return Pos(pos.line + 1, 0) }\n      else { return null }\n    } else {\n      return new Pos(pos.line, pos.ch + dir)\n    }\n  }\n\n  function selectAll(cm) {\n    cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);\n  }\n\n  // UPDATING\n\n  // Allow \"beforeChange\" event handlers to influence a change\n  function filterChange(doc, change, update) {\n    var obj = {\n      canceled: false,\n      from: change.from,\n      to: change.to,\n      text: change.text,\n      origin: change.origin,\n      cancel: function () { return obj.canceled = true; }\n    };\n    if (update) { obj.update = function (from, to, text, origin) {\n      if (from) { obj.from = clipPos(doc, from); }\n      if (to) { obj.to = clipPos(doc, to); }\n      if (text) { obj.text = text; }\n      if (origin !== undefined) { obj.origin = origin; }\n    }; }\n    signal(doc, \"beforeChange\", doc, obj);\n    if (doc.cm) { signal(doc.cm, \"beforeChange\", doc.cm, obj); }\n\n    if (obj.canceled) {\n      if (doc.cm) { doc.cm.curOp.updateInput = 2; }\n      return null\n    }\n    return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin}\n  }\n\n  // Apply a change to a document, and add it to the document's\n  // history, and propagating it to all linked documents.\n  function makeChange(doc, change, ignoreReadOnly) {\n    if (doc.cm) {\n      if (!doc.cm.curOp) { return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly) }\n      if (doc.cm.state.suppressEdits) { return }\n    }\n\n    if (hasHandler(doc, \"beforeChange\") || doc.cm && hasHandler(doc.cm, \"beforeChange\")) {\n      change = filterChange(doc, change, true);\n      if (!change) { return }\n    }\n\n    // Possibly split or suppress the update based on the presence\n    // of read-only spans in its range.\n    var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);\n    if (split) {\n      for (var i = split.length - 1; i >= 0; --i)\n        { makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [\"\"] : change.text, origin: change.origin}); }\n    } else {\n      makeChangeInner(doc, change);\n    }\n  }\n\n  function makeChangeInner(doc, change) {\n    if (change.text.length == 1 && change.text[0] == \"\" && cmp(change.from, change.to) == 0) { return }\n    var selAfter = computeSelAfterChange(doc, change);\n    addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);\n\n    makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));\n    var rebased = [];\n\n    linkedDocs(doc, function (doc, sharedHist) {\n      if (!sharedHist && indexOf(rebased, doc.history) == -1) {\n        rebaseHist(doc.history, change);\n        rebased.push(doc.history);\n      }\n      makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));\n    });\n  }\n\n  // Revert a change stored in a document's history.\n  function makeChangeFromHistory(doc, type, allowSelectionOnly) {\n    var suppress = doc.cm && doc.cm.state.suppressEdits;\n    if (suppress && !allowSelectionOnly) { return }\n\n    var hist = doc.history, event, selAfter = doc.sel;\n    var source = type == \"undo\" ? hist.done : hist.undone, dest = type == \"undo\" ? hist.undone : hist.done;\n\n    // Verify that there is a useable event (so that ctrl-z won't\n    // needlessly clear selection events)\n    var i = 0;\n    for (; i < source.length; i++) {\n      event = source[i];\n      if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)\n        { break }\n    }\n    if (i == source.length) { return }\n    hist.lastOrigin = hist.lastSelOrigin = null;\n\n    for (;;) {\n      event = source.pop();\n      if (event.ranges) {\n        pushSelectionToHistory(event, dest);\n        if (allowSelectionOnly && !event.equals(doc.sel)) {\n          setSelection(doc, event, {clearRedo: false});\n          return\n        }\n        selAfter = event;\n      } else if (suppress) {\n        source.push(event);\n        return\n      } else { break }\n    }\n\n    // Build up a reverse change object to add to the opposite history\n    // stack (redo when undoing, and vice versa).\n    var antiChanges = [];\n    pushSelectionToHistory(selAfter, dest);\n    dest.push({changes: antiChanges, generation: hist.generation});\n    hist.generation = event.generation || ++hist.maxGeneration;\n\n    var filter = hasHandler(doc, \"beforeChange\") || doc.cm && hasHandler(doc.cm, \"beforeChange\");\n\n    var loop = function ( i ) {\n      var change = event.changes[i];\n      change.origin = type;\n      if (filter && !filterChange(doc, change, false)) {\n        source.length = 0;\n        return {}\n      }\n\n      antiChanges.push(historyChangeFromChange(doc, change));\n\n      var after = i ? computeSelAfterChange(doc, change) : lst(source);\n      makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));\n      if (!i && doc.cm) { doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}); }\n      var rebased = [];\n\n      // Propagate to the linked documents\n      linkedDocs(doc, function (doc, sharedHist) {\n        if (!sharedHist && indexOf(rebased, doc.history) == -1) {\n          rebaseHist(doc.history, change);\n          rebased.push(doc.history);\n        }\n        makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));\n      });\n    };\n\n    for (var i$1 = event.changes.length - 1; i$1 >= 0; --i$1) {\n      var returned = loop( i$1 );\n\n      if ( returned ) return returned.v;\n    }\n  }\n\n  // Sub-views need their line numbers shifted when text is added\n  // above or below them in the parent document.\n  function shiftDoc(doc, distance) {\n    if (distance == 0) { return }\n    doc.first += distance;\n    doc.sel = new Selection(map(doc.sel.ranges, function (range) { return new Range(\n      Pos(range.anchor.line + distance, range.anchor.ch),\n      Pos(range.head.line + distance, range.head.ch)\n    ); }), doc.sel.primIndex);\n    if (doc.cm) {\n      regChange(doc.cm, doc.first, doc.first - distance, distance);\n      for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++)\n        { regLineChange(doc.cm, l, \"gutter\"); }\n    }\n  }\n\n  // More lower-level change function, handling only a single document\n  // (not linked ones).\n  function makeChangeSingleDoc(doc, change, selAfter, spans) {\n    if (doc.cm && !doc.cm.curOp)\n      { return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans) }\n\n    if (change.to.line < doc.first) {\n      shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));\n      return\n    }\n    if (change.from.line > doc.lastLine()) { return }\n\n    // Clip the change to the size of this doc\n    if (change.from.line < doc.first) {\n      var shift = change.text.length - 1 - (doc.first - change.from.line);\n      shiftDoc(doc, shift);\n      change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),\n                text: [lst(change.text)], origin: change.origin};\n    }\n    var last = doc.lastLine();\n    if (change.to.line > last) {\n      change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),\n                text: [change.text[0]], origin: change.origin};\n    }\n\n    change.removed = getBetween(doc, change.from, change.to);\n\n    if (!selAfter) { selAfter = computeSelAfterChange(doc, change); }\n    if (doc.cm) { makeChangeSingleDocInEditor(doc.cm, change, spans); }\n    else { updateDoc(doc, change, spans); }\n    setSelectionNoUndo(doc, selAfter, sel_dontScroll);\n\n    if (doc.cantEdit && skipAtomic(doc, Pos(doc.firstLine(), 0)))\n      { doc.cantEdit = false; }\n  }\n\n  // Handle the interaction of a change to a document with the editor\n  // that this document is part of.\n  function makeChangeSingleDocInEditor(cm, change, spans) {\n    var doc = cm.doc, display = cm.display, from = change.from, to = change.to;\n\n    var recomputeMaxLength = false, checkWidthStart = from.line;\n    if (!cm.options.lineWrapping) {\n      checkWidthStart = lineNo(visualLine(getLine(doc, from.line)));\n      doc.iter(checkWidthStart, to.line + 1, function (line) {\n        if (line == display.maxLine) {\n          recomputeMaxLength = true;\n          return true\n        }\n      });\n    }\n\n    if (doc.sel.contains(change.from, change.to) > -1)\n      { signalCursorActivity(cm); }\n\n    updateDoc(doc, change, spans, estimateHeight(cm));\n\n    if (!cm.options.lineWrapping) {\n      doc.iter(checkWidthStart, from.line + change.text.length, function (line) {\n        var len = lineLength(line);\n        if (len > display.maxLineLength) {\n          display.maxLine = line;\n          display.maxLineLength = len;\n          display.maxLineChanged = true;\n          recomputeMaxLength = false;\n        }\n      });\n      if (recomputeMaxLength) { cm.curOp.updateMaxLine = true; }\n    }\n\n    retreatFrontier(doc, from.line);\n    startWorker(cm, 400);\n\n    var lendiff = change.text.length - (to.line - from.line) - 1;\n    // Remember that these lines changed, for updating the display\n    if (change.full)\n      { regChange(cm); }\n    else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))\n      { regLineChange(cm, from.line, \"text\"); }\n    else\n      { regChange(cm, from.line, to.line + 1, lendiff); }\n\n    var changesHandler = hasHandler(cm, \"changes\"), changeHandler = hasHandler(cm, \"change\");\n    if (changeHandler || changesHandler) {\n      var obj = {\n        from: from, to: to,\n        text: change.text,\n        removed: change.removed,\n        origin: change.origin\n      };\n      if (changeHandler) { signalLater(cm, \"change\", cm, obj); }\n      if (changesHandler) { (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj); }\n    }\n    cm.display.selForContextMenu = null;\n  }\n\n  function replaceRange(doc, code, from, to, origin) {\n    var assign;\n\n    if (!to) { to = from; }\n    if (cmp(to, from) < 0) { (assign = [to, from], from = assign[0], to = assign[1]); }\n    if (typeof code == \"string\") { code = doc.splitLines(code); }\n    makeChange(doc, {from: from, to: to, text: code, origin: origin});\n  }\n\n  // Rebasing/resetting history to deal with externally-sourced changes\n\n  function rebaseHistSelSingle(pos, from, to, diff) {\n    if (to < pos.line) {\n      pos.line += diff;\n    } else if (from < pos.line) {\n      pos.line = from;\n      pos.ch = 0;\n    }\n  }\n\n  // Tries to rebase an array of history events given a change in the\n  // document. If the change touches the same lines as the event, the\n  // event, and everything 'behind' it, is discarded. If the change is\n  // before the event, the event's positions are updated. Uses a\n  // copy-on-write scheme for the positions, to avoid having to\n  // reallocate them all on every rebase, but also avoid problems with\n  // shared position objects being unsafely updated.\n  function rebaseHistArray(array, from, to, diff) {\n    for (var i = 0; i < array.length; ++i) {\n      var sub = array[i], ok = true;\n      if (sub.ranges) {\n        if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; }\n        for (var j = 0; j < sub.ranges.length; j++) {\n          rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff);\n          rebaseHistSelSingle(sub.ranges[j].head, from, to, diff);\n        }\n        continue\n      }\n      for (var j$1 = 0; j$1 < sub.changes.length; ++j$1) {\n        var cur = sub.changes[j$1];\n        if (to < cur.from.line) {\n          cur.from = Pos(cur.from.line + diff, cur.from.ch);\n          cur.to = Pos(cur.to.line + diff, cur.to.ch);\n        } else if (from <= cur.to.line) {\n          ok = false;\n          break\n        }\n      }\n      if (!ok) {\n        array.splice(0, i + 1);\n        i = 0;\n      }\n    }\n  }\n\n  function rebaseHist(hist, change) {\n    var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1;\n    rebaseHistArray(hist.done, from, to, diff);\n    rebaseHistArray(hist.undone, from, to, diff);\n  }\n\n  // Utility for applying a change to a line by handle or number,\n  // returning the number and optionally registering the line as\n  // changed.\n  function changeLine(doc, handle, changeType, op) {\n    var no = handle, line = handle;\n    if (typeof handle == \"number\") { line = getLine(doc, clipLine(doc, handle)); }\n    else { no = lineNo(handle); }\n    if (no == null) { return null }\n    if (op(line, no) && doc.cm) { regLineChange(doc.cm, no, changeType); }\n    return line\n  }\n\n  // The document is represented as a BTree consisting of leaves, with\n  // chunk of lines in them, and branches, with up to ten leaves or\n  // other branch nodes below them. The top node is always a branch\n  // node, and is the document object itself (meaning it has\n  // additional methods and properties).\n  //\n  // All nodes have parent links. The tree is used both to go from\n  // line numbers to line objects, and to go from objects to numbers.\n  // It also indexes by height, and is used to convert between height\n  // and line object, and to find the total height of the document.\n  //\n  // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html\n\n  function LeafChunk(lines) {\n    this.lines = lines;\n    this.parent = null;\n    var height = 0;\n    for (var i = 0; i < lines.length; ++i) {\n      lines[i].parent = this;\n      height += lines[i].height;\n    }\n    this.height = height;\n  }\n\n  LeafChunk.prototype = {\n    chunkSize: function() { return this.lines.length },\n\n    // Remove the n lines at offset 'at'.\n    removeInner: function(at, n) {\n      for (var i = at, e = at + n; i < e; ++i) {\n        var line = this.lines[i];\n        this.height -= line.height;\n        cleanUpLine(line);\n        signalLater(line, \"delete\");\n      }\n      this.lines.splice(at, n);\n    },\n\n    // Helper used to collapse a small branch into a single leaf.\n    collapse: function(lines) {\n      lines.push.apply(lines, this.lines);\n    },\n\n    // Insert the given array of lines at offset 'at', count them as\n    // having the given height.\n    insertInner: function(at, lines, height) {\n      this.height += height;\n      this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));\n      for (var i = 0; i < lines.length; ++i) { lines[i].parent = this; }\n    },\n\n    // Used to iterate over a part of the tree.\n    iterN: function(at, n, op) {\n      for (var e = at + n; at < e; ++at)\n        { if (op(this.lines[at])) { return true } }\n    }\n  };\n\n  function BranchChunk(children) {\n    this.children = children;\n    var size = 0, height = 0;\n    for (var i = 0; i < children.length; ++i) {\n      var ch = children[i];\n      size += ch.chunkSize(); height += ch.height;\n      ch.parent = this;\n    }\n    this.size = size;\n    this.height = height;\n    this.parent = null;\n  }\n\n  BranchChunk.prototype = {\n    chunkSize: function() { return this.size },\n\n    removeInner: function(at, n) {\n      this.size -= n;\n      for (var i = 0; i < this.children.length; ++i) {\n        var child = this.children[i], sz = child.chunkSize();\n        if (at < sz) {\n          var rm = Math.min(n, sz - at), oldHeight = child.height;\n          child.removeInner(at, rm);\n          this.height -= oldHeight - child.height;\n          if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }\n          if ((n -= rm) == 0) { break }\n          at = 0;\n        } else { at -= sz; }\n      }\n      // If the result is smaller than 25 lines, ensure that it is a\n      // single leaf node.\n      if (this.size - n < 25 &&\n          (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {\n        var lines = [];\n        this.collapse(lines);\n        this.children = [new LeafChunk(lines)];\n        this.children[0].parent = this;\n      }\n    },\n\n    collapse: function(lines) {\n      for (var i = 0; i < this.children.length; ++i) { this.children[i].collapse(lines); }\n    },\n\n    insertInner: function(at, lines, height) {\n      this.size += lines.length;\n      this.height += height;\n      for (var i = 0; i < this.children.length; ++i) {\n        var child = this.children[i], sz = child.chunkSize();\n        if (at <= sz) {\n          child.insertInner(at, lines, height);\n          if (child.lines && child.lines.length > 50) {\n            // To avoid memory thrashing when child.lines is huge (e.g. first view of a large file), it's never spliced.\n            // Instead, small slices are taken. They're taken in order because sequential memory accesses are fastest.\n            var remaining = child.lines.length % 25 + 25;\n            for (var pos = remaining; pos < child.lines.length;) {\n              var leaf = new LeafChunk(child.lines.slice(pos, pos += 25));\n              child.height -= leaf.height;\n              this.children.splice(++i, 0, leaf);\n              leaf.parent = this;\n            }\n            child.lines = child.lines.slice(0, remaining);\n            this.maybeSpill();\n          }\n          break\n        }\n        at -= sz;\n      }\n    },\n\n    // When a node has grown, check whether it should be split.\n    maybeSpill: function() {\n      if (this.children.length <= 10) { return }\n      var me = this;\n      do {\n        var spilled = me.children.splice(me.children.length - 5, 5);\n        var sibling = new BranchChunk(spilled);\n        if (!me.parent) { // Become the parent node\n          var copy = new BranchChunk(me.children);\n          copy.parent = me;\n          me.children = [copy, sibling];\n          me = copy;\n       } else {\n          me.size -= sibling.size;\n          me.height -= sibling.height;\n          var myIndex = indexOf(me.parent.children, me);\n          me.parent.children.splice(myIndex + 1, 0, sibling);\n        }\n        sibling.parent = me.parent;\n      } while (me.children.length > 10)\n      me.parent.maybeSpill();\n    },\n\n    iterN: function(at, n, op) {\n      for (var i = 0; i < this.children.length; ++i) {\n        var child = this.children[i], sz = child.chunkSize();\n        if (at < sz) {\n          var used = Math.min(n, sz - at);\n          if (child.iterN(at, used, op)) { return true }\n          if ((n -= used) == 0) { break }\n          at = 0;\n        } else { at -= sz; }\n      }\n    }\n  };\n\n  // Line widgets are block elements displayed above or below a line.\n\n  var LineWidget = function(doc, node, options) {\n    if (options) { for (var opt in options) { if (options.hasOwnProperty(opt))\n      { this[opt] = options[opt]; } } }\n    this.doc = doc;\n    this.node = node;\n  };\n\n  LineWidget.prototype.clear = function () {\n    var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line);\n    if (no == null || !ws) { return }\n    for (var i = 0; i < ws.length; ++i) { if (ws[i] == this) { ws.splice(i--, 1); } }\n    if (!ws.length) { line.widgets = null; }\n    var height = widgetHeight(this);\n    updateLineHeight(line, Math.max(0, line.height - height));\n    if (cm) {\n      runInOp(cm, function () {\n        adjustScrollWhenAboveVisible(cm, line, -height);\n        regLineChange(cm, no, \"widget\");\n      });\n      signalLater(cm, \"lineWidgetCleared\", cm, this, no);\n    }\n  };\n\n  LineWidget.prototype.changed = function () {\n      var this$1 = this;\n\n    var oldH = this.height, cm = this.doc.cm, line = this.line;\n    this.height = null;\n    var diff = widgetHeight(this) - oldH;\n    if (!diff) { return }\n    if (!lineIsHidden(this.doc, line)) { updateLineHeight(line, line.height + diff); }\n    if (cm) {\n      runInOp(cm, function () {\n        cm.curOp.forceUpdate = true;\n        adjustScrollWhenAboveVisible(cm, line, diff);\n        signalLater(cm, \"lineWidgetChanged\", cm, this$1, lineNo(line));\n      });\n    }\n  };\n  eventMixin(LineWidget);\n\n  function adjustScrollWhenAboveVisible(cm, line, diff) {\n    if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))\n      { addToScrollTop(cm, diff); }\n  }\n\n  function addLineWidget(doc, handle, node, options) {\n    var widget = new LineWidget(doc, node, options);\n    var cm = doc.cm;\n    if (cm && widget.noHScroll) { cm.display.alignWidgets = true; }\n    changeLine(doc, handle, \"widget\", function (line) {\n      var widgets = line.widgets || (line.widgets = []);\n      if (widget.insertAt == null) { widgets.push(widget); }\n      else { widgets.splice(Math.min(widgets.length, Math.max(0, widget.insertAt)), 0, widget); }\n      widget.line = line;\n      if (cm && !lineIsHidden(doc, line)) {\n        var aboveVisible = heightAtLine(line) < doc.scrollTop;\n        updateLineHeight(line, line.height + widgetHeight(widget));\n        if (aboveVisible) { addToScrollTop(cm, widget.height); }\n        cm.curOp.forceUpdate = true;\n      }\n      return true\n    });\n    if (cm) { signalLater(cm, \"lineWidgetAdded\", cm, widget, typeof handle == \"number\" ? handle : lineNo(handle)); }\n    return widget\n  }\n\n  // TEXTMARKERS\n\n  // Created with markText and setBookmark methods. A TextMarker is a\n  // handle that can be used to clear or find a marked position in the\n  // document. Line objects hold arrays (markedSpans) containing\n  // {from, to, marker} object pointing to such marker objects, and\n  // indicating that such a marker is present on that line. Multiple\n  // lines may point to the same marker when it spans across lines.\n  // The spans will have null for their from/to properties when the\n  // marker continues beyond the start/end of the line. Markers have\n  // links back to the lines they currently touch.\n\n  // Collapsed markers have unique ids, in order to be able to order\n  // them, which is needed for uniquely determining an outer marker\n  // when they overlap (they may nest, but not partially overlap).\n  var nextMarkerId = 0;\n\n  var TextMarker = function(doc, type) {\n    this.lines = [];\n    this.type = type;\n    this.doc = doc;\n    this.id = ++nextMarkerId;\n  };\n\n  // Clear the marker.\n  TextMarker.prototype.clear = function () {\n    if (this.explicitlyCleared) { return }\n    var cm = this.doc.cm, withOp = cm && !cm.curOp;\n    if (withOp) { startOperation(cm); }\n    if (hasHandler(this, \"clear\")) {\n      var found = this.find();\n      if (found) { signalLater(this, \"clear\", found.from, found.to); }\n    }\n    var min = null, max = null;\n    for (var i = 0; i < this.lines.length; ++i) {\n      var line = this.lines[i];\n      var span = getMarkedSpanFor(line.markedSpans, this);\n      if (cm && !this.collapsed) { regLineChange(cm, lineNo(line), \"text\"); }\n      else if (cm) {\n        if (span.to != null) { max = lineNo(line); }\n        if (span.from != null) { min = lineNo(line); }\n      }\n      line.markedSpans = removeMarkedSpan(line.markedSpans, span);\n      if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm)\n        { updateLineHeight(line, textHeight(cm.display)); }\n    }\n    if (cm && this.collapsed && !cm.options.lineWrapping) { for (var i$1 = 0; i$1 < this.lines.length; ++i$1) {\n      var visual = visualLine(this.lines[i$1]), len = lineLength(visual);\n      if (len > cm.display.maxLineLength) {\n        cm.display.maxLine = visual;\n        cm.display.maxLineLength = len;\n        cm.display.maxLineChanged = true;\n      }\n    } }\n\n    if (min != null && cm && this.collapsed) { regChange(cm, min, max + 1); }\n    this.lines.length = 0;\n    this.explicitlyCleared = true;\n    if (this.atomic && this.doc.cantEdit) {\n      this.doc.cantEdit = false;\n      if (cm) { reCheckSelection(cm.doc); }\n    }\n    if (cm) { signalLater(cm, \"markerCleared\", cm, this, min, max); }\n    if (withOp) { endOperation(cm); }\n    if (this.parent) { this.parent.clear(); }\n  };\n\n  // Find the position of the marker in the document. Returns a {from,\n  // to} object by default. Side can be passed to get a specific side\n  // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the\n  // Pos objects returned contain a line object, rather than a line\n  // number (used to prevent looking up the same line twice).\n  TextMarker.prototype.find = function (side, lineObj) {\n    if (side == null && this.type == \"bookmark\") { side = 1; }\n    var from, to;\n    for (var i = 0; i < this.lines.length; ++i) {\n      var line = this.lines[i];\n      var span = getMarkedSpanFor(line.markedSpans, this);\n      if (span.from != null) {\n        from = Pos(lineObj ? line : lineNo(line), span.from);\n        if (side == -1) { return from }\n      }\n      if (span.to != null) {\n        to = Pos(lineObj ? line : lineNo(line), span.to);\n        if (side == 1) { return to }\n      }\n    }\n    return from && {from: from, to: to}\n  };\n\n  // Signals that the marker's widget changed, and surrounding layout\n  // should be recomputed.\n  TextMarker.prototype.changed = function () {\n      var this$1 = this;\n\n    var pos = this.find(-1, true), widget = this, cm = this.doc.cm;\n    if (!pos || !cm) { return }\n    runInOp(cm, function () {\n      var line = pos.line, lineN = lineNo(pos.line);\n      var view = findViewForLine(cm, lineN);\n      if (view) {\n        clearLineMeasurementCacheFor(view);\n        cm.curOp.selectionChanged = cm.curOp.forceUpdate = true;\n      }\n      cm.curOp.updateMaxLine = true;\n      if (!lineIsHidden(widget.doc, line) && widget.height != null) {\n        var oldHeight = widget.height;\n        widget.height = null;\n        var dHeight = widgetHeight(widget) - oldHeight;\n        if (dHeight)\n          { updateLineHeight(line, line.height + dHeight); }\n      }\n      signalLater(cm, \"markerChanged\", cm, this$1);\n    });\n  };\n\n  TextMarker.prototype.attachLine = function (line) {\n    if (!this.lines.length && this.doc.cm) {\n      var op = this.doc.cm.curOp;\n      if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)\n        { (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this); }\n    }\n    this.lines.push(line);\n  };\n\n  TextMarker.prototype.detachLine = function (line) {\n    this.lines.splice(indexOf(this.lines, line), 1);\n    if (!this.lines.length && this.doc.cm) {\n      var op = this.doc.cm.curOp\n      ;(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this);\n    }\n  };\n  eventMixin(TextMarker);\n\n  // Create a marker, wire it up to the right lines, and\n  function markText(doc, from, to, options, type) {\n    // Shared markers (across linked documents) are handled separately\n    // (markTextShared will call out to this again, once per\n    // document).\n    if (options && options.shared) { return markTextShared(doc, from, to, options, type) }\n    // Ensure we are in an operation.\n    if (doc.cm && !doc.cm.curOp) { return operation(doc.cm, markText)(doc, from, to, options, type) }\n\n    var marker = new TextMarker(doc, type), diff = cmp(from, to);\n    if (options) { copyObj(options, marker, false); }\n    // Don't connect empty markers unless clearWhenEmpty is false\n    if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false)\n      { return marker }\n    if (marker.replacedWith) {\n      // Showing up as a widget implies collapsed (widget replaces text)\n      marker.collapsed = true;\n      marker.widgetNode = eltP(\"span\", [marker.replacedWith], \"CodeMirror-widget\");\n      if (!options.handleMouseEvents) { marker.widgetNode.setAttribute(\"cm-ignore-events\", \"true\"); }\n      if (options.insertLeft) { marker.widgetNode.insertLeft = true; }\n    }\n    if (marker.collapsed) {\n      if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||\n          from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))\n        { throw new Error(\"Inserting collapsed marker partially overlapping an existing one\") }\n      seeCollapsedSpans();\n    }\n\n    if (marker.addToHistory)\n      { addChangeToHistory(doc, {from: from, to: to, origin: \"markText\"}, doc.sel, NaN); }\n\n    var curLine = from.line, cm = doc.cm, updateMaxLine;\n    doc.iter(curLine, to.line + 1, function (line) {\n      if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)\n        { updateMaxLine = true; }\n      if (marker.collapsed && curLine != from.line) { updateLineHeight(line, 0); }\n      addMarkedSpan(line, new MarkedSpan(marker,\n                                         curLine == from.line ? from.ch : null,\n                                         curLine == to.line ? to.ch : null), doc.cm && doc.cm.curOp);\n      ++curLine;\n    });\n    // lineIsHidden depends on the presence of the spans, so needs a second pass\n    if (marker.collapsed) { doc.iter(from.line, to.line + 1, function (line) {\n      if (lineIsHidden(doc, line)) { updateLineHeight(line, 0); }\n    }); }\n\n    if (marker.clearOnEnter) { on(marker, \"beforeCursorEnter\", function () { return marker.clear(); }); }\n\n    if (marker.readOnly) {\n      seeReadOnlySpans();\n      if (doc.history.done.length || doc.history.undone.length)\n        { doc.clearHistory(); }\n    }\n    if (marker.collapsed) {\n      marker.id = ++nextMarkerId;\n      marker.atomic = true;\n    }\n    if (cm) {\n      // Sync editor state\n      if (updateMaxLine) { cm.curOp.updateMaxLine = true; }\n      if (marker.collapsed)\n        { regChange(cm, from.line, to.line + 1); }\n      else if (marker.className || marker.startStyle || marker.endStyle || marker.css ||\n               marker.attributes || marker.title)\n        { for (var i = from.line; i <= to.line; i++) { regLineChange(cm, i, \"text\"); } }\n      if (marker.atomic) { reCheckSelection(cm.doc); }\n      signalLater(cm, \"markerAdded\", cm, marker);\n    }\n    return marker\n  }\n\n  // SHARED TEXTMARKERS\n\n  // A shared marker spans multiple linked documents. It is\n  // implemented as a meta-marker-object controlling multiple normal\n  // markers.\n  var SharedTextMarker = function(markers, primary) {\n    this.markers = markers;\n    this.primary = primary;\n    for (var i = 0; i < markers.length; ++i)\n      { markers[i].parent = this; }\n  };\n\n  SharedTextMarker.prototype.clear = function () {\n    if (this.explicitlyCleared) { return }\n    this.explicitlyCleared = true;\n    for (var i = 0; i < this.markers.length; ++i)\n      { this.markers[i].clear(); }\n    signalLater(this, \"clear\");\n  };\n\n  SharedTextMarker.prototype.find = function (side, lineObj) {\n    return this.primary.find(side, lineObj)\n  };\n  eventMixin(SharedTextMarker);\n\n  function markTextShared(doc, from, to, options, type) {\n    options = copyObj(options);\n    options.shared = false;\n    var markers = [markText(doc, from, to, options, type)], primary = markers[0];\n    var widget = options.widgetNode;\n    linkedDocs(doc, function (doc) {\n      if (widget) { options.widgetNode = widget.cloneNode(true); }\n      markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));\n      for (var i = 0; i < doc.linked.length; ++i)\n        { if (doc.linked[i].isParent) { return } }\n      primary = lst(markers);\n    });\n    return new SharedTextMarker(markers, primary)\n  }\n\n  function findSharedMarkers(doc) {\n    return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), function (m) { return m.parent; })\n  }\n\n  function copySharedMarkers(doc, markers) {\n    for (var i = 0; i < markers.length; i++) {\n      var marker = markers[i], pos = marker.find();\n      var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to);\n      if (cmp(mFrom, mTo)) {\n        var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type);\n        marker.markers.push(subMark);\n        subMark.parent = marker;\n      }\n    }\n  }\n\n  function detachSharedMarkers(markers) {\n    var loop = function ( i ) {\n      var marker = markers[i], linked = [marker.primary.doc];\n      linkedDocs(marker.primary.doc, function (d) { return linked.push(d); });\n      for (var j = 0; j < marker.markers.length; j++) {\n        var subMarker = marker.markers[j];\n        if (indexOf(linked, subMarker.doc) == -1) {\n          subMarker.parent = null;\n          marker.markers.splice(j--, 1);\n        }\n      }\n    };\n\n    for (var i = 0; i < markers.length; i++) loop( i );\n  }\n\n  var nextDocId = 0;\n  var Doc = function(text, mode, firstLine, lineSep, direction) {\n    if (!(this instanceof Doc)) { return new Doc(text, mode, firstLine, lineSep, direction) }\n    if (firstLine == null) { firstLine = 0; }\n\n    BranchChunk.call(this, [new LeafChunk([new Line(\"\", null)])]);\n    this.first = firstLine;\n    this.scrollTop = this.scrollLeft = 0;\n    this.cantEdit = false;\n    this.cleanGeneration = 1;\n    this.modeFrontier = this.highlightFrontier = firstLine;\n    var start = Pos(firstLine, 0);\n    this.sel = simpleSelection(start);\n    this.history = new History(null);\n    this.id = ++nextDocId;\n    this.modeOption = mode;\n    this.lineSep = lineSep;\n    this.direction = (direction == \"rtl\") ? \"rtl\" : \"ltr\";\n    this.extend = false;\n\n    if (typeof text == \"string\") { text = this.splitLines(text); }\n    updateDoc(this, {from: start, to: start, text: text});\n    setSelection(this, simpleSelection(start), sel_dontScroll);\n  };\n\n  Doc.prototype = createObj(BranchChunk.prototype, {\n    constructor: Doc,\n    // Iterate over the document. Supports two forms -- with only one\n    // argument, it calls that for each line in the document. With\n    // three, it iterates over the range given by the first two (with\n    // the second being non-inclusive).\n    iter: function(from, to, op) {\n      if (op) { this.iterN(from - this.first, to - from, op); }\n      else { this.iterN(this.first, this.first + this.size, from); }\n    },\n\n    // Non-public interface for adding and removing lines.\n    insert: function(at, lines) {\n      var height = 0;\n      for (var i = 0; i < lines.length; ++i) { height += lines[i].height; }\n      this.insertInner(at - this.first, lines, height);\n    },\n    remove: function(at, n) { this.removeInner(at - this.first, n); },\n\n    // From here, the methods are part of the public interface. Most\n    // are also available from CodeMirror (editor) instances.\n\n    getValue: function(lineSep) {\n      var lines = getLines(this, this.first, this.first + this.size);\n      if (lineSep === false) { return lines }\n      return lines.join(lineSep || this.lineSeparator())\n    },\n    setValue: docMethodOp(function(code) {\n      var top = Pos(this.first, 0), last = this.first + this.size - 1;\n      makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),\n                        text: this.splitLines(code), origin: \"setValue\", full: true}, true);\n      if (this.cm) { scrollToCoords(this.cm, 0, 0); }\n      setSelection(this, simpleSelection(top), sel_dontScroll);\n    }),\n    replaceRange: function(code, from, to, origin) {\n      from = clipPos(this, from);\n      to = to ? clipPos(this, to) : from;\n      replaceRange(this, code, from, to, origin);\n    },\n    getRange: function(from, to, lineSep) {\n      var lines = getBetween(this, clipPos(this, from), clipPos(this, to));\n      if (lineSep === false) { return lines }\n      if (lineSep === '') { return lines.join('') }\n      return lines.join(lineSep || this.lineSeparator())\n    },\n\n    getLine: function(line) {var l = this.getLineHandle(line); return l && l.text},\n\n    getLineHandle: function(line) {if (isLine(this, line)) { return getLine(this, line) }},\n    getLineNumber: function(line) {return lineNo(line)},\n\n    getLineHandleVisualStart: function(line) {\n      if (typeof line == \"number\") { line = getLine(this, line); }\n      return visualLine(line)\n    },\n\n    lineCount: function() {return this.size},\n    firstLine: function() {return this.first},\n    lastLine: function() {return this.first + this.size - 1},\n\n    clipPos: function(pos) {return clipPos(this, pos)},\n\n    getCursor: function(start) {\n      var range = this.sel.primary(), pos;\n      if (start == null || start == \"head\") { pos = range.head; }\n      else if (start == \"anchor\") { pos = range.anchor; }\n      else if (start == \"end\" || start == \"to\" || start === false) { pos = range.to(); }\n      else { pos = range.from(); }\n      return pos\n    },\n    listSelections: function() { return this.sel.ranges },\n    somethingSelected: function() {return this.sel.somethingSelected()},\n\n    setCursor: docMethodOp(function(line, ch, options) {\n      setSimpleSelection(this, clipPos(this, typeof line == \"number\" ? Pos(line, ch || 0) : line), null, options);\n    }),\n    setSelection: docMethodOp(function(anchor, head, options) {\n      setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options);\n    }),\n    extendSelection: docMethodOp(function(head, other, options) {\n      extendSelection(this, clipPos(this, head), other && clipPos(this, other), options);\n    }),\n    extendSelections: docMethodOp(function(heads, options) {\n      extendSelections(this, clipPosArray(this, heads), options);\n    }),\n    extendSelectionsBy: docMethodOp(function(f, options) {\n      var heads = map(this.sel.ranges, f);\n      extendSelections(this, clipPosArray(this, heads), options);\n    }),\n    setSelections: docMethodOp(function(ranges, primary, options) {\n      if (!ranges.length) { return }\n      var out = [];\n      for (var i = 0; i < ranges.length; i++)\n        { out[i] = new Range(clipPos(this, ranges[i].anchor),\n                           clipPos(this, ranges[i].head || ranges[i].anchor)); }\n      if (primary == null) { primary = Math.min(ranges.length - 1, this.sel.primIndex); }\n      setSelection(this, normalizeSelection(this.cm, out, primary), options);\n    }),\n    addSelection: docMethodOp(function(anchor, head, options) {\n      var ranges = this.sel.ranges.slice(0);\n      ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)));\n      setSelection(this, normalizeSelection(this.cm, ranges, ranges.length - 1), options);\n    }),\n\n    getSelection: function(lineSep) {\n      var ranges = this.sel.ranges, lines;\n      for (var i = 0; i < ranges.length; i++) {\n        var sel = getBetween(this, ranges[i].from(), ranges[i].to());\n        lines = lines ? lines.concat(sel) : sel;\n      }\n      if (lineSep === false) { return lines }\n      else { return lines.join(lineSep || this.lineSeparator()) }\n    },\n    getSelections: function(lineSep) {\n      var parts = [], ranges = this.sel.ranges;\n      for (var i = 0; i < ranges.length; i++) {\n        var sel = getBetween(this, ranges[i].from(), ranges[i].to());\n        if (lineSep !== false) { sel = sel.join(lineSep || this.lineSeparator()); }\n        parts[i] = sel;\n      }\n      return parts\n    },\n    replaceSelection: function(code, collapse, origin) {\n      var dup = [];\n      for (var i = 0; i < this.sel.ranges.length; i++)\n        { dup[i] = code; }\n      this.replaceSelections(dup, collapse, origin || \"+input\");\n    },\n    replaceSelections: docMethodOp(function(code, collapse, origin) {\n      var changes = [], sel = this.sel;\n      for (var i = 0; i < sel.ranges.length; i++) {\n        var range = sel.ranges[i];\n        changes[i] = {from: range.from(), to: range.to(), text: this.splitLines(code[i]), origin: origin};\n      }\n      var newSel = collapse && collapse != \"end\" && computeReplacedSel(this, changes, collapse);\n      for (var i$1 = changes.length - 1; i$1 >= 0; i$1--)\n        { makeChange(this, changes[i$1]); }\n      if (newSel) { setSelectionReplaceHistory(this, newSel); }\n      else if (this.cm) { ensureCursorVisible(this.cm); }\n    }),\n    undo: docMethodOp(function() {makeChangeFromHistory(this, \"undo\");}),\n    redo: docMethodOp(function() {makeChangeFromHistory(this, \"redo\");}),\n    undoSelection: docMethodOp(function() {makeChangeFromHistory(this, \"undo\", true);}),\n    redoSelection: docMethodOp(function() {makeChangeFromHistory(this, \"redo\", true);}),\n\n    setExtending: function(val) {this.extend = val;},\n    getExtending: function() {return this.extend},\n\n    historySize: function() {\n      var hist = this.history, done = 0, undone = 0;\n      for (var i = 0; i < hist.done.length; i++) { if (!hist.done[i].ranges) { ++done; } }\n      for (var i$1 = 0; i$1 < hist.undone.length; i$1++) { if (!hist.undone[i$1].ranges) { ++undone; } }\n      return {undo: done, redo: undone}\n    },\n    clearHistory: function() {\n      var this$1 = this;\n\n      this.history = new History(this.history);\n      linkedDocs(this, function (doc) { return doc.history = this$1.history; }, true);\n    },\n\n    markClean: function() {\n      this.cleanGeneration = this.changeGeneration(true);\n    },\n    changeGeneration: function(forceSplit) {\n      if (forceSplit)\n        { this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null; }\n      return this.history.generation\n    },\n    isClean: function (gen) {\n      return this.history.generation == (gen || this.cleanGeneration)\n    },\n\n    getHistory: function() {\n      return {done: copyHistoryArray(this.history.done),\n              undone: copyHistoryArray(this.history.undone)}\n    },\n    setHistory: function(histData) {\n      var hist = this.history = new History(this.history);\n      hist.done = copyHistoryArray(histData.done.slice(0), null, true);\n      hist.undone = copyHistoryArray(histData.undone.slice(0), null, true);\n    },\n\n    setGutterMarker: docMethodOp(function(line, gutterID, value) {\n      return changeLine(this, line, \"gutter\", function (line) {\n        var markers = line.gutterMarkers || (line.gutterMarkers = {});\n        markers[gutterID] = value;\n        if (!value && isEmpty(markers)) { line.gutterMarkers = null; }\n        return true\n      })\n    }),\n\n    clearGutter: docMethodOp(function(gutterID) {\n      var this$1 = this;\n\n      this.iter(function (line) {\n        if (line.gutterMarkers && line.gutterMarkers[gutterID]) {\n          changeLine(this$1, line, \"gutter\", function () {\n            line.gutterMarkers[gutterID] = null;\n            if (isEmpty(line.gutterMarkers)) { line.gutterMarkers = null; }\n            return true\n          });\n        }\n      });\n    }),\n\n    lineInfo: function(line) {\n      var n;\n      if (typeof line == \"number\") {\n        if (!isLine(this, line)) { return null }\n        n = line;\n        line = getLine(this, line);\n        if (!line) { return null }\n      } else {\n        n = lineNo(line);\n        if (n == null) { return null }\n      }\n      return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,\n              textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,\n              widgets: line.widgets}\n    },\n\n    addLineClass: docMethodOp(function(handle, where, cls) {\n      return changeLine(this, handle, where == \"gutter\" ? \"gutter\" : \"class\", function (line) {\n        var prop = where == \"text\" ? \"textClass\"\n                 : where == \"background\" ? \"bgClass\"\n                 : where == \"gutter\" ? \"gutterClass\" : \"wrapClass\";\n        if (!line[prop]) { line[prop] = cls; }\n        else if (classTest(cls).test(line[prop])) { return false }\n        else { line[prop] += \" \" + cls; }\n        return true\n      })\n    }),\n    removeLineClass: docMethodOp(function(handle, where, cls) {\n      return changeLine(this, handle, where == \"gutter\" ? \"gutter\" : \"class\", function (line) {\n        var prop = where == \"text\" ? \"textClass\"\n                 : where == \"background\" ? \"bgClass\"\n                 : where == \"gutter\" ? \"gutterClass\" : \"wrapClass\";\n        var cur = line[prop];\n        if (!cur) { return false }\n        else if (cls == null) { line[prop] = null; }\n        else {\n          var found = cur.match(classTest(cls));\n          if (!found) { return false }\n          var end = found.index + found[0].length;\n          line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? \"\" : \" \") + cur.slice(end) || null;\n        }\n        return true\n      })\n    }),\n\n    addLineWidget: docMethodOp(function(handle, node, options) {\n      return addLineWidget(this, handle, node, options)\n    }),\n    removeLineWidget: function(widget) { widget.clear(); },\n\n    markText: function(from, to, options) {\n      return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type || \"range\")\n    },\n    setBookmark: function(pos, options) {\n      var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),\n                      insertLeft: options && options.insertLeft,\n                      clearWhenEmpty: false, shared: options && options.shared,\n                      handleMouseEvents: options && options.handleMouseEvents};\n      pos = clipPos(this, pos);\n      return markText(this, pos, pos, realOpts, \"bookmark\")\n    },\n    findMarksAt: function(pos) {\n      pos = clipPos(this, pos);\n      var markers = [], spans = getLine(this, pos.line).markedSpans;\n      if (spans) { for (var i = 0; i < spans.length; ++i) {\n        var span = spans[i];\n        if ((span.from == null || span.from <= pos.ch) &&\n            (span.to == null || span.to >= pos.ch))\n          { markers.push(span.marker.parent || span.marker); }\n      } }\n      return markers\n    },\n    findMarks: function(from, to, filter) {\n      from = clipPos(this, from); to = clipPos(this, to);\n      var found = [], lineNo = from.line;\n      this.iter(from.line, to.line + 1, function (line) {\n        var spans = line.markedSpans;\n        if (spans) { for (var i = 0; i < spans.length; i++) {\n          var span = spans[i];\n          if (!(span.to != null && lineNo == from.line && from.ch >= span.to ||\n                span.from == null && lineNo != from.line ||\n                span.from != null && lineNo == to.line && span.from >= to.ch) &&\n              (!filter || filter(span.marker)))\n            { found.push(span.marker.parent || span.marker); }\n        } }\n        ++lineNo;\n      });\n      return found\n    },\n    getAllMarks: function() {\n      var markers = [];\n      this.iter(function (line) {\n        var sps = line.markedSpans;\n        if (sps) { for (var i = 0; i < sps.length; ++i)\n          { if (sps[i].from != null) { markers.push(sps[i].marker); } } }\n      });\n      return markers\n    },\n\n    posFromIndex: function(off) {\n      var ch, lineNo = this.first, sepSize = this.lineSeparator().length;\n      this.iter(function (line) {\n        var sz = line.text.length + sepSize;\n        if (sz > off) { ch = off; return true }\n        off -= sz;\n        ++lineNo;\n      });\n      return clipPos(this, Pos(lineNo, ch))\n    },\n    indexFromPos: function (coords) {\n      coords = clipPos(this, coords);\n      var index = coords.ch;\n      if (coords.line < this.first || coords.ch < 0) { return 0 }\n      var sepSize = this.lineSeparator().length;\n      this.iter(this.first, coords.line, function (line) { // iter aborts when callback returns a truthy value\n        index += line.text.length + sepSize;\n      });\n      return index\n    },\n\n    copy: function(copyHistory) {\n      var doc = new Doc(getLines(this, this.first, this.first + this.size),\n                        this.modeOption, this.first, this.lineSep, this.direction);\n      doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;\n      doc.sel = this.sel;\n      doc.extend = false;\n      if (copyHistory) {\n        doc.history.undoDepth = this.history.undoDepth;\n        doc.setHistory(this.getHistory());\n      }\n      return doc\n    },\n\n    linkedDoc: function(options) {\n      if (!options) { options = {}; }\n      var from = this.first, to = this.first + this.size;\n      if (options.from != null && options.from > from) { from = options.from; }\n      if (options.to != null && options.to < to) { to = options.to; }\n      var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep, this.direction);\n      if (options.sharedHist) { copy.history = this.history\n      ; }(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist});\n      copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}];\n      copySharedMarkers(copy, findSharedMarkers(this));\n      return copy\n    },\n    unlinkDoc: function(other) {\n      if (other instanceof CodeMirror) { other = other.doc; }\n      if (this.linked) { for (var i = 0; i < this.linked.length; ++i) {\n        var link = this.linked[i];\n        if (link.doc != other) { continue }\n        this.linked.splice(i, 1);\n        other.unlinkDoc(this);\n        detachSharedMarkers(findSharedMarkers(this));\n        break\n      } }\n      // If the histories were shared, split them again\n      if (other.history == this.history) {\n        var splitIds = [other.id];\n        linkedDocs(other, function (doc) { return splitIds.push(doc.id); }, true);\n        other.history = new History(null);\n        other.history.done = copyHistoryArray(this.history.done, splitIds);\n        other.history.undone = copyHistoryArray(this.history.undone, splitIds);\n      }\n    },\n    iterLinkedDocs: function(f) {linkedDocs(this, f);},\n\n    getMode: function() {return this.mode},\n    getEditor: function() {return this.cm},\n\n    splitLines: function(str) {\n      if (this.lineSep) { return str.split(this.lineSep) }\n      return splitLinesAuto(str)\n    },\n    lineSeparator: function() { return this.lineSep || \"\\n\" },\n\n    setDirection: docMethodOp(function (dir) {\n      if (dir != \"rtl\") { dir = \"ltr\"; }\n      if (dir == this.direction) { return }\n      this.direction = dir;\n      this.iter(function (line) { return line.order = null; });\n      if (this.cm) { directionChanged(this.cm); }\n    })\n  });\n\n  // Public alias.\n  Doc.prototype.eachLine = Doc.prototype.iter;\n\n  // Kludge to work around strange IE behavior where it'll sometimes\n  // re-fire a series of drag-related events right after the drop (#1551)\n  var lastDrop = 0;\n\n  function onDrop(e) {\n    var cm = this;\n    clearDragCursor(cm);\n    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e))\n      { return }\n    e_preventDefault(e);\n    if (ie) { lastDrop = +new Date; }\n    var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;\n    if (!pos || cm.isReadOnly()) { return }\n    // Might be a file drop, in which case we simply extract the text\n    // and insert it.\n    if (files && files.length && window.FileReader && window.File) {\n      var n = files.length, text = Array(n), read = 0;\n      var markAsReadAndPasteIfAllFilesAreRead = function () {\n        if (++read == n) {\n          operation(cm, function () {\n            pos = clipPos(cm.doc, pos);\n            var change = {from: pos, to: pos,\n                          text: cm.doc.splitLines(\n                              text.filter(function (t) { return t != null; }).join(cm.doc.lineSeparator())),\n                          origin: \"paste\"};\n            makeChange(cm.doc, change);\n            setSelectionReplaceHistory(cm.doc, simpleSelection(clipPos(cm.doc, pos), clipPos(cm.doc, changeEnd(change))));\n          })();\n        }\n      };\n      var readTextFromFile = function (file, i) {\n        if (cm.options.allowDropFileTypes &&\n            indexOf(cm.options.allowDropFileTypes, file.type) == -1) {\n          markAsReadAndPasteIfAllFilesAreRead();\n          return\n        }\n        var reader = new FileReader;\n        reader.onerror = function () { return markAsReadAndPasteIfAllFilesAreRead(); };\n        reader.onload = function () {\n          var content = reader.result;\n          if (/[\\x00-\\x08\\x0e-\\x1f]{2}/.test(content)) {\n            markAsReadAndPasteIfAllFilesAreRead();\n            return\n          }\n          text[i] = content;\n          markAsReadAndPasteIfAllFilesAreRead();\n        };\n        reader.readAsText(file);\n      };\n      for (var i = 0; i < files.length; i++) { readTextFromFile(files[i], i); }\n    } else { // Normal drop\n      // Don't do a replace if the drop happened inside of the selected text.\n      if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {\n        cm.state.draggingText(e);\n        // Ensure the editor is re-focused\n        setTimeout(function () { return cm.display.input.focus(); }, 20);\n        return\n      }\n      try {\n        var text$1 = e.dataTransfer.getData(\"Text\");\n        if (text$1) {\n          var selected;\n          if (cm.state.draggingText && !cm.state.draggingText.copy)\n            { selected = cm.listSelections(); }\n          setSelectionNoUndo(cm.doc, simpleSelection(pos, pos));\n          if (selected) { for (var i$1 = 0; i$1 < selected.length; ++i$1)\n            { replaceRange(cm.doc, \"\", selected[i$1].anchor, selected[i$1].head, \"drag\"); } }\n          cm.replaceSelection(text$1, \"around\", \"paste\");\n          cm.display.input.focus();\n        }\n      }\n      catch(e$1){}\n    }\n  }\n\n  function onDragStart(cm, e) {\n    if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return }\n    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) { return }\n\n    e.dataTransfer.setData(\"Text\", cm.getSelection());\n    e.dataTransfer.effectAllowed = \"copyMove\";\n\n    // Use dummy image instead of default browsers image.\n    // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.\n    if (e.dataTransfer.setDragImage && !safari) {\n      var img = elt(\"img\", null, null, \"position: fixed; left: 0; top: 0;\");\n      img.src = \"data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\";\n      if (presto) {\n        img.width = img.height = 1;\n        cm.display.wrapper.appendChild(img);\n        // Force a relayout, or Opera won't use our image for some obscure reason\n        img._top = img.offsetTop;\n      }\n      e.dataTransfer.setDragImage(img, 0, 0);\n      if (presto) { img.parentNode.removeChild(img); }\n    }\n  }\n\n  function onDragOver(cm, e) {\n    var pos = posFromMouse(cm, e);\n    if (!pos) { return }\n    var frag = document.createDocumentFragment();\n    drawSelectionCursor(cm, pos, frag);\n    if (!cm.display.dragCursor) {\n      cm.display.dragCursor = elt(\"div\", null, \"CodeMirror-cursors CodeMirror-dragcursors\");\n      cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv);\n    }\n    removeChildrenAndAdd(cm.display.dragCursor, frag);\n  }\n\n  function clearDragCursor(cm) {\n    if (cm.display.dragCursor) {\n      cm.display.lineSpace.removeChild(cm.display.dragCursor);\n      cm.display.dragCursor = null;\n    }\n  }\n\n  // These must be handled carefully, because naively registering a\n  // handler for each editor will cause the editors to never be\n  // garbage collected.\n\n  function forEachCodeMirror(f) {\n    if (!document.getElementsByClassName) { return }\n    var byClass = document.getElementsByClassName(\"CodeMirror\"), editors = [];\n    for (var i = 0; i < byClass.length; i++) {\n      var cm = byClass[i].CodeMirror;\n      if (cm) { editors.push(cm); }\n    }\n    if (editors.length) { editors[0].operation(function () {\n      for (var i = 0; i < editors.length; i++) { f(editors[i]); }\n    }); }\n  }\n\n  var globalsRegistered = false;\n  function ensureGlobalHandlers() {\n    if (globalsRegistered) { return }\n    registerGlobalHandlers();\n    globalsRegistered = true;\n  }\n  function registerGlobalHandlers() {\n    // When the window resizes, we need to refresh active editors.\n    var resizeTimer;\n    on(window, \"resize\", function () {\n      if (resizeTimer == null) { resizeTimer = setTimeout(function () {\n        resizeTimer = null;\n        forEachCodeMirror(onResize);\n      }, 100); }\n    });\n    // When the window loses focus, we want to show the editor as blurred\n    on(window, \"blur\", function () { return forEachCodeMirror(onBlur); });\n  }\n  // Called when the window resizes\n  function onResize(cm) {\n    var d = cm.display;\n    // Might be a text scaling operation, clear size caches.\n    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;\n    d.scrollbarsClipped = false;\n    cm.setSize();\n  }\n\n  var keyNames = {\n    3: \"Pause\", 8: \"Backspace\", 9: \"Tab\", 13: \"Enter\", 16: \"Shift\", 17: \"Ctrl\", 18: \"Alt\",\n    19: \"Pause\", 20: \"CapsLock\", 27: \"Esc\", 32: \"Space\", 33: \"PageUp\", 34: \"PageDown\", 35: \"End\",\n    36: \"Home\", 37: \"Left\", 38: \"Up\", 39: \"Right\", 40: \"Down\", 44: \"PrintScrn\", 45: \"Insert\",\n    46: \"Delete\", 59: \";\", 61: \"=\", 91: \"Mod\", 92: \"Mod\", 93: \"Mod\",\n    106: \"*\", 107: \"=\", 109: \"-\", 110: \".\", 111: \"/\", 145: \"ScrollLock\",\n    173: \"-\", 186: \";\", 187: \"=\", 188: \",\", 189: \"-\", 190: \".\", 191: \"/\", 192: \"`\", 219: \"[\", 220: \"\\\\\",\n    221: \"]\", 222: \"'\", 224: \"Mod\", 63232: \"Up\", 63233: \"Down\", 63234: \"Left\", 63235: \"Right\", 63272: \"Delete\",\n    63273: \"Home\", 63275: \"End\", 63276: \"PageUp\", 63277: \"PageDown\", 63302: \"Insert\"\n  };\n\n  // Number keys\n  for (var i = 0; i < 10; i++) { keyNames[i + 48] = keyNames[i + 96] = String(i); }\n  // Alphabetic keys\n  for (var i$1 = 65; i$1 <= 90; i$1++) { keyNames[i$1] = String.fromCharCode(i$1); }\n  // Function keys\n  for (var i$2 = 1; i$2 <= 12; i$2++) { keyNames[i$2 + 111] = keyNames[i$2 + 63235] = \"F\" + i$2; }\n\n  var keyMap = {};\n\n  keyMap.basic = {\n    \"Left\": \"goCharLeft\", \"Right\": \"goCharRight\", \"Up\": \"goLineUp\", \"Down\": \"goLineDown\",\n    \"End\": \"goLineEnd\", \"Home\": \"goLineStartSmart\", \"PageUp\": \"goPageUp\", \"PageDown\": \"goPageDown\",\n    \"Delete\": \"delCharAfter\", \"Backspace\": \"delCharBefore\", \"Shift-Backspace\": \"delCharBefore\",\n    \"Tab\": \"defaultTab\", \"Shift-Tab\": \"indentAuto\",\n    \"Enter\": \"newlineAndIndent\", \"Insert\": \"toggleOverwrite\",\n    \"Esc\": \"singleSelection\"\n  };\n  // Note that the save and find-related commands aren't defined by\n  // default. User code or addons can define them. Unknown commands\n  // are simply ignored.\n  keyMap.pcDefault = {\n    \"Ctrl-A\": \"selectAll\", \"Ctrl-D\": \"deleteLine\", \"Ctrl-Z\": \"undo\", \"Shift-Ctrl-Z\": \"redo\", \"Ctrl-Y\": \"redo\",\n    \"Ctrl-Home\": \"goDocStart\", \"Ctrl-End\": \"goDocEnd\", \"Ctrl-Up\": \"goLineUp\", \"Ctrl-Down\": \"goLineDown\",\n    \"Ctrl-Left\": \"goGroupLeft\", \"Ctrl-Right\": \"goGroupRight\", \"Alt-Left\": \"goLineStart\", \"Alt-Right\": \"goLineEnd\",\n    \"Ctrl-Backspace\": \"delGroupBefore\", \"Ctrl-Delete\": \"delGroupAfter\", \"Ctrl-S\": \"save\", \"Ctrl-F\": \"find\",\n    \"Ctrl-G\": \"findNext\", \"Shift-Ctrl-G\": \"findPrev\", \"Shift-Ctrl-F\": \"replace\", \"Shift-Ctrl-R\": \"replaceAll\",\n    \"Ctrl-[\": \"indentLess\", \"Ctrl-]\": \"indentMore\",\n    \"Ctrl-U\": \"undoSelection\", \"Shift-Ctrl-U\": \"redoSelection\", \"Alt-U\": \"redoSelection\",\n    \"fallthrough\": \"basic\"\n  };\n  // Very basic readline/emacs-style bindings, which are standard on Mac.\n  keyMap.emacsy = {\n    \"Ctrl-F\": \"goCharRight\", \"Ctrl-B\": \"goCharLeft\", \"Ctrl-P\": \"goLineUp\", \"Ctrl-N\": \"goLineDown\",\n    \"Ctrl-A\": \"goLineStart\", \"Ctrl-E\": \"goLineEnd\", \"Ctrl-V\": \"goPageDown\", \"Shift-Ctrl-V\": \"goPageUp\",\n    \"Ctrl-D\": \"delCharAfter\", \"Ctrl-H\": \"delCharBefore\", \"Alt-Backspace\": \"delWordBefore\", \"Ctrl-K\": \"killLine\",\n    \"Ctrl-T\": \"transposeChars\", \"Ctrl-O\": \"openLine\"\n  };\n  keyMap.macDefault = {\n    \"Cmd-A\": \"selectAll\", \"Cmd-D\": \"deleteLine\", \"Cmd-Z\": \"undo\", \"Shift-Cmd-Z\": \"redo\", \"Cmd-Y\": \"redo\",\n    \"Cmd-Home\": \"goDocStart\", \"Cmd-Up\": \"goDocStart\", \"Cmd-End\": \"goDocEnd\", \"Cmd-Down\": \"goDocEnd\", \"Alt-Left\": \"goGroupLeft\",\n    \"Alt-Right\": \"goGroupRight\", \"Cmd-Left\": \"goLineLeft\", \"Cmd-Right\": \"goLineRight\", \"Alt-Backspace\": \"delGroupBefore\",\n    \"Ctrl-Alt-Backspace\": \"delGroupAfter\", \"Alt-Delete\": \"delGroupAfter\", \"Cmd-S\": \"save\", \"Cmd-F\": \"find\",\n    \"Cmd-G\": \"findNext\", \"Shift-Cmd-G\": \"findPrev\", \"Cmd-Alt-F\": \"replace\", \"Shift-Cmd-Alt-F\": \"replaceAll\",\n    \"Cmd-[\": \"indentLess\", \"Cmd-]\": \"indentMore\", \"Cmd-Backspace\": \"delWrappedLineLeft\", \"Cmd-Delete\": \"delWrappedLineRight\",\n    \"Cmd-U\": \"undoSelection\", \"Shift-Cmd-U\": \"redoSelection\", \"Ctrl-Up\": \"goDocStart\", \"Ctrl-Down\": \"goDocEnd\",\n    \"fallthrough\": [\"basic\", \"emacsy\"]\n  };\n  keyMap[\"default\"] = mac ? keyMap.macDefault : keyMap.pcDefault;\n\n  // KEYMAP DISPATCH\n\n  function normalizeKeyName(name) {\n    var parts = name.split(/-(?!$)/);\n    name = parts[parts.length - 1];\n    var alt, ctrl, shift, cmd;\n    for (var i = 0; i < parts.length - 1; i++) {\n      var mod = parts[i];\n      if (/^(cmd|meta|m)$/i.test(mod)) { cmd = true; }\n      else if (/^a(lt)?$/i.test(mod)) { alt = true; }\n      else if (/^(c|ctrl|control)$/i.test(mod)) { ctrl = true; }\n      else if (/^s(hift)?$/i.test(mod)) { shift = true; }\n      else { throw new Error(\"Unrecognized modifier name: \" + mod) }\n    }\n    if (alt) { name = \"Alt-\" + name; }\n    if (ctrl) { name = \"Ctrl-\" + name; }\n    if (cmd) { name = \"Cmd-\" + name; }\n    if (shift) { name = \"Shift-\" + name; }\n    return name\n  }\n\n  // This is a kludge to keep keymaps mostly working as raw objects\n  // (backwards compatibility) while at the same time support features\n  // like normalization and multi-stroke key bindings. It compiles a\n  // new normalized keymap, and then updates the old object to reflect\n  // this.\n  function normalizeKeyMap(keymap) {\n    var copy = {};\n    for (var keyname in keymap) { if (keymap.hasOwnProperty(keyname)) {\n      var value = keymap[keyname];\n      if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) { continue }\n      if (value == \"...\") { delete keymap[keyname]; continue }\n\n      var keys = map(keyname.split(\" \"), normalizeKeyName);\n      for (var i = 0; i < keys.length; i++) {\n        var val = (void 0), name = (void 0);\n        if (i == keys.length - 1) {\n          name = keys.join(\" \");\n          val = value;\n        } else {\n          name = keys.slice(0, i + 1).join(\" \");\n          val = \"...\";\n        }\n        var prev = copy[name];\n        if (!prev) { copy[name] = val; }\n        else if (prev != val) { throw new Error(\"Inconsistent bindings for \" + name) }\n      }\n      delete keymap[keyname];\n    } }\n    for (var prop in copy) { keymap[prop] = copy[prop]; }\n    return keymap\n  }\n\n  function lookupKey(key, map, handle, context) {\n    map = getKeyMap(map);\n    var found = map.call ? map.call(key, context) : map[key];\n    if (found === false) { return \"nothing\" }\n    if (found === \"...\") { return \"multi\" }\n    if (found != null && handle(found)) { return \"handled\" }\n\n    if (map.fallthrough) {\n      if (Object.prototype.toString.call(map.fallthrough) != \"[object Array]\")\n        { return lookupKey(key, map.fallthrough, handle, context) }\n      for (var i = 0; i < map.fallthrough.length; i++) {\n        var result = lookupKey(key, map.fallthrough[i], handle, context);\n        if (result) { return result }\n      }\n    }\n  }\n\n  // Modifier key presses don't count as 'real' key presses for the\n  // purpose of keymap fallthrough.\n  function isModifierKey(value) {\n    var name = typeof value == \"string\" ? value : keyNames[value.keyCode];\n    return name == \"Ctrl\" || name == \"Alt\" || name == \"Shift\" || name == \"Mod\"\n  }\n\n  function addModifierNames(name, event, noShift) {\n    var base = name;\n    if (event.altKey && base != \"Alt\") { name = \"Alt-\" + name; }\n    if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != \"Ctrl\") { name = \"Ctrl-\" + name; }\n    if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != \"Mod\") { name = \"Cmd-\" + name; }\n    if (!noShift && event.shiftKey && base != \"Shift\") { name = \"Shift-\" + name; }\n    return name\n  }\n\n  // Look up the name of a key as indicated by an event object.\n  function keyName(event, noShift) {\n    if (presto && event.keyCode == 34 && event[\"char\"]) { return false }\n    var name = keyNames[event.keyCode];\n    if (name == null || event.altGraphKey) { return false }\n    // Ctrl-ScrollLock has keyCode 3, same as Ctrl-Pause,\n    // so we'll use event.code when available (Chrome 48+, FF 38+, Safari 10.1+)\n    if (event.keyCode == 3 && event.code) { name = event.code; }\n    return addModifierNames(name, event, noShift)\n  }\n\n  function getKeyMap(val) {\n    return typeof val == \"string\" ? keyMap[val] : val\n  }\n\n  // Helper for deleting text near the selection(s), used to implement\n  // backspace, delete, and similar functionality.\n  function deleteNearSelection(cm, compute) {\n    var ranges = cm.doc.sel.ranges, kill = [];\n    // Build up a set of ranges to kill first, merging overlapping\n    // ranges.\n    for (var i = 0; i < ranges.length; i++) {\n      var toKill = compute(ranges[i]);\n      while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {\n        var replaced = kill.pop();\n        if (cmp(replaced.from, toKill.from) < 0) {\n          toKill.from = replaced.from;\n          break\n        }\n      }\n      kill.push(toKill);\n    }\n    // Next, remove those actual ranges.\n    runInOp(cm, function () {\n      for (var i = kill.length - 1; i >= 0; i--)\n        { replaceRange(cm.doc, \"\", kill[i].from, kill[i].to, \"+delete\"); }\n      ensureCursorVisible(cm);\n    });\n  }\n\n  function moveCharLogically(line, ch, dir) {\n    var target = skipExtendingChars(line.text, ch + dir, dir);\n    return target < 0 || target > line.text.length ? null : target\n  }\n\n  function moveLogically(line, start, dir) {\n    var ch = moveCharLogically(line, start.ch, dir);\n    return ch == null ? null : new Pos(start.line, ch, dir < 0 ? \"after\" : \"before\")\n  }\n\n  function endOfLine(visually, cm, lineObj, lineNo, dir) {\n    if (visually) {\n      if (cm.doc.direction == \"rtl\") { dir = -dir; }\n      var order = getOrder(lineObj, cm.doc.direction);\n      if (order) {\n        var part = dir < 0 ? lst(order) : order[0];\n        var moveInStorageOrder = (dir < 0) == (part.level == 1);\n        var sticky = moveInStorageOrder ? \"after\" : \"before\";\n        var ch;\n        // With a wrapped rtl chunk (possibly spanning multiple bidi parts),\n        // it could be that the last bidi part is not on the last visual line,\n        // since visual lines contain content order-consecutive chunks.\n        // Thus, in rtl, we are looking for the first (content-order) character\n        // in the rtl chunk that is on the last line (that is, the same line\n        // as the last (content-order) character).\n        if (part.level > 0 || cm.doc.direction == \"rtl\") {\n          var prep = prepareMeasureForLine(cm, lineObj);\n          ch = dir < 0 ? lineObj.text.length - 1 : 0;\n          var targetTop = measureCharPrepared(cm, prep, ch).top;\n          ch = findFirst(function (ch) { return measureCharPrepared(cm, prep, ch).top == targetTop; }, (dir < 0) == (part.level == 1) ? part.from : part.to - 1, ch);\n          if (sticky == \"before\") { ch = moveCharLogically(lineObj, ch, 1); }\n        } else { ch = dir < 0 ? part.to : part.from; }\n        return new Pos(lineNo, ch, sticky)\n      }\n    }\n    return new Pos(lineNo, dir < 0 ? lineObj.text.length : 0, dir < 0 ? \"before\" : \"after\")\n  }\n\n  function moveVisually(cm, line, start, dir) {\n    var bidi = getOrder(line, cm.doc.direction);\n    if (!bidi) { return moveLogically(line, start, dir) }\n    if (start.ch >= line.text.length) {\n      start.ch = line.text.length;\n      start.sticky = \"before\";\n    } else if (start.ch <= 0) {\n      start.ch = 0;\n      start.sticky = \"after\";\n    }\n    var partPos = getBidiPartAt(bidi, start.ch, start.sticky), part = bidi[partPos];\n    if (cm.doc.direction == \"ltr\" && part.level % 2 == 0 && (dir > 0 ? part.to > start.ch : part.from < start.ch)) {\n      // Case 1: We move within an ltr part in an ltr editor. Even with wrapped lines,\n      // nothing interesting happens.\n      return moveLogically(line, start, dir)\n    }\n\n    var mv = function (pos, dir) { return moveCharLogically(line, pos instanceof Pos ? pos.ch : pos, dir); };\n    var prep;\n    var getWrappedLineExtent = function (ch) {\n      if (!cm.options.lineWrapping) { return {begin: 0, end: line.text.length} }\n      prep = prep || prepareMeasureForLine(cm, line);\n      return wrappedLineExtentChar(cm, line, prep, ch)\n    };\n    var wrappedLineExtent = getWrappedLineExtent(start.sticky == \"before\" ? mv(start, -1) : start.ch);\n\n    if (cm.doc.direction == \"rtl\" || part.level == 1) {\n      var moveInStorageOrder = (part.level == 1) == (dir < 0);\n      var ch = mv(start, moveInStorageOrder ? 1 : -1);\n      if (ch != null && (!moveInStorageOrder ? ch >= part.from && ch >= wrappedLineExtent.begin : ch <= part.to && ch <= wrappedLineExtent.end)) {\n        // Case 2: We move within an rtl part or in an rtl editor on the same visual line\n        var sticky = moveInStorageOrder ? \"before\" : \"after\";\n        return new Pos(start.line, ch, sticky)\n      }\n    }\n\n    // Case 3: Could not move within this bidi part in this visual line, so leave\n    // the current bidi part\n\n    var searchInVisualLine = function (partPos, dir, wrappedLineExtent) {\n      var getRes = function (ch, moveInStorageOrder) { return moveInStorageOrder\n        ? new Pos(start.line, mv(ch, 1), \"before\")\n        : new Pos(start.line, ch, \"after\"); };\n\n      for (; partPos >= 0 && partPos < bidi.length; partPos += dir) {\n        var part = bidi[partPos];\n        var moveInStorageOrder = (dir > 0) == (part.level != 1);\n        var ch = moveInStorageOrder ? wrappedLineExtent.begin : mv(wrappedLineExtent.end, -1);\n        if (part.from <= ch && ch < part.to) { return getRes(ch, moveInStorageOrder) }\n        ch = moveInStorageOrder ? part.from : mv(part.to, -1);\n        if (wrappedLineExtent.begin <= ch && ch < wrappedLineExtent.end) { return getRes(ch, moveInStorageOrder) }\n      }\n    };\n\n    // Case 3a: Look for other bidi parts on the same visual line\n    var res = searchInVisualLine(partPos + dir, dir, wrappedLineExtent);\n    if (res) { return res }\n\n    // Case 3b: Look for other bidi parts on the next visual line\n    var nextCh = dir > 0 ? wrappedLineExtent.end : mv(wrappedLineExtent.begin, -1);\n    if (nextCh != null && !(dir > 0 && nextCh == line.text.length)) {\n      res = searchInVisualLine(dir > 0 ? 0 : bidi.length - 1, dir, getWrappedLineExtent(nextCh));\n      if (res) { return res }\n    }\n\n    // Case 4: Nowhere to move\n    return null\n  }\n\n  // Commands are parameter-less actions that can be performed on an\n  // editor, mostly used for keybindings.\n  var commands = {\n    selectAll: selectAll,\n    singleSelection: function (cm) { return cm.setSelection(cm.getCursor(\"anchor\"), cm.getCursor(\"head\"), sel_dontScroll); },\n    killLine: function (cm) { return deleteNearSelection(cm, function (range) {\n      if (range.empty()) {\n        var len = getLine(cm.doc, range.head.line).text.length;\n        if (range.head.ch == len && range.head.line < cm.lastLine())\n          { return {from: range.head, to: Pos(range.head.line + 1, 0)} }\n        else\n          { return {from: range.head, to: Pos(range.head.line, len)} }\n      } else {\n        return {from: range.from(), to: range.to()}\n      }\n    }); },\n    deleteLine: function (cm) { return deleteNearSelection(cm, function (range) { return ({\n      from: Pos(range.from().line, 0),\n      to: clipPos(cm.doc, Pos(range.to().line + 1, 0))\n    }); }); },\n    delLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { return ({\n      from: Pos(range.from().line, 0), to: range.from()\n    }); }); },\n    delWrappedLineLeft: function (cm) { return deleteNearSelection(cm, function (range) {\n      var top = cm.charCoords(range.head, \"div\").top + 5;\n      var leftPos = cm.coordsChar({left: 0, top: top}, \"div\");\n      return {from: leftPos, to: range.from()}\n    }); },\n    delWrappedLineRight: function (cm) { return deleteNearSelection(cm, function (range) {\n      var top = cm.charCoords(range.head, \"div\").top + 5;\n      var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, \"div\");\n      return {from: range.from(), to: rightPos }\n    }); },\n    undo: function (cm) { return cm.undo(); },\n    redo: function (cm) { return cm.redo(); },\n    undoSelection: function (cm) { return cm.undoSelection(); },\n    redoSelection: function (cm) { return cm.redoSelection(); },\n    goDocStart: function (cm) { return cm.extendSelection(Pos(cm.firstLine(), 0)); },\n    goDocEnd: function (cm) { return cm.extendSelection(Pos(cm.lastLine())); },\n    goLineStart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStart(cm, range.head.line); },\n      {origin: \"+move\", bias: 1}\n    ); },\n    goLineStartSmart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStartSmart(cm, range.head); },\n      {origin: \"+move\", bias: 1}\n    ); },\n    goLineEnd: function (cm) { return cm.extendSelectionsBy(function (range) { return lineEnd(cm, range.head.line); },\n      {origin: \"+move\", bias: -1}\n    ); },\n    goLineRight: function (cm) { return cm.extendSelectionsBy(function (range) {\n      var top = cm.cursorCoords(range.head, \"div\").top + 5;\n      return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, \"div\")\n    }, sel_move); },\n    goLineLeft: function (cm) { return cm.extendSelectionsBy(function (range) {\n      var top = cm.cursorCoords(range.head, \"div\").top + 5;\n      return cm.coordsChar({left: 0, top: top}, \"div\")\n    }, sel_move); },\n    goLineLeftSmart: function (cm) { return cm.extendSelectionsBy(function (range) {\n      var top = cm.cursorCoords(range.head, \"div\").top + 5;\n      var pos = cm.coordsChar({left: 0, top: top}, \"div\");\n      if (pos.ch < cm.getLine(pos.line).search(/\\S/)) { return lineStartSmart(cm, range.head) }\n      return pos\n    }, sel_move); },\n    goLineUp: function (cm) { return cm.moveV(-1, \"line\"); },\n    goLineDown: function (cm) { return cm.moveV(1, \"line\"); },\n    goPageUp: function (cm) { return cm.moveV(-1, \"page\"); },\n    goPageDown: function (cm) { return cm.moveV(1, \"page\"); },\n    goCharLeft: function (cm) { return cm.moveH(-1, \"char\"); },\n    goCharRight: function (cm) { return cm.moveH(1, \"char\"); },\n    goColumnLeft: function (cm) { return cm.moveH(-1, \"column\"); },\n    goColumnRight: function (cm) { return cm.moveH(1, \"column\"); },\n    goWordLeft: function (cm) { return cm.moveH(-1, \"word\"); },\n    goGroupRight: function (cm) { return cm.moveH(1, \"group\"); },\n    goGroupLeft: function (cm) { return cm.moveH(-1, \"group\"); },\n    goWordRight: function (cm) { return cm.moveH(1, \"word\"); },\n    delCharBefore: function (cm) { return cm.deleteH(-1, \"codepoint\"); },\n    delCharAfter: function (cm) { return cm.deleteH(1, \"char\"); },\n    delWordBefore: function (cm) { return cm.deleteH(-1, \"word\"); },\n    delWordAfter: function (cm) { return cm.deleteH(1, \"word\"); },\n    delGroupBefore: function (cm) { return cm.deleteH(-1, \"group\"); },\n    delGroupAfter: function (cm) { return cm.deleteH(1, \"group\"); },\n    indentAuto: function (cm) { return cm.indentSelection(\"smart\"); },\n    indentMore: function (cm) { return cm.indentSelection(\"add\"); },\n    indentLess: function (cm) { return cm.indentSelection(\"subtract\"); },\n    insertTab: function (cm) { return cm.replaceSelection(\"\\t\"); },\n    insertSoftTab: function (cm) {\n      var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize;\n      for (var i = 0; i < ranges.length; i++) {\n        var pos = ranges[i].from();\n        var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize);\n        spaces.push(spaceStr(tabSize - col % tabSize));\n      }\n      cm.replaceSelections(spaces);\n    },\n    defaultTab: function (cm) {\n      if (cm.somethingSelected()) { cm.indentSelection(\"add\"); }\n      else { cm.execCommand(\"insertTab\"); }\n    },\n    // Swap the two chars left and right of each selection's head.\n    // Move cursor behind the two swapped characters afterwards.\n    //\n    // Doesn't consider line feeds a character.\n    // Doesn't scan more than one line above to find a character.\n    // Doesn't do anything on an empty line.\n    // Doesn't do anything with non-empty selections.\n    transposeChars: function (cm) { return runInOp(cm, function () {\n      var ranges = cm.listSelections(), newSel = [];\n      for (var i = 0; i < ranges.length; i++) {\n        if (!ranges[i].empty()) { continue }\n        var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text;\n        if (line) {\n          if (cur.ch == line.length) { cur = new Pos(cur.line, cur.ch - 1); }\n          if (cur.ch > 0) {\n            cur = new Pos(cur.line, cur.ch + 1);\n            cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2),\n                            Pos(cur.line, cur.ch - 2), cur, \"+transpose\");\n          } else if (cur.line > cm.doc.first) {\n            var prev = getLine(cm.doc, cur.line - 1).text;\n            if (prev) {\n              cur = new Pos(cur.line, 1);\n              cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() +\n                              prev.charAt(prev.length - 1),\n                              Pos(cur.line - 1, prev.length - 1), cur, \"+transpose\");\n            }\n          }\n        }\n        newSel.push(new Range(cur, cur));\n      }\n      cm.setSelections(newSel);\n    }); },\n    newlineAndIndent: function (cm) { return runInOp(cm, function () {\n      var sels = cm.listSelections();\n      for (var i = sels.length - 1; i >= 0; i--)\n        { cm.replaceRange(cm.doc.lineSeparator(), sels[i].anchor, sels[i].head, \"+input\"); }\n      sels = cm.listSelections();\n      for (var i$1 = 0; i$1 < sels.length; i$1++)\n        { cm.indentLine(sels[i$1].from().line, null, true); }\n      ensureCursorVisible(cm);\n    }); },\n    openLine: function (cm) { return cm.replaceSelection(\"\\n\", \"start\"); },\n    toggleOverwrite: function (cm) { return cm.toggleOverwrite(); }\n  };\n\n\n  function lineStart(cm, lineN) {\n    var line = getLine(cm.doc, lineN);\n    var visual = visualLine(line);\n    if (visual != line) { lineN = lineNo(visual); }\n    return endOfLine(true, cm, visual, lineN, 1)\n  }\n  function lineEnd(cm, lineN) {\n    var line = getLine(cm.doc, lineN);\n    var visual = visualLineEnd(line);\n    if (visual != line) { lineN = lineNo(visual); }\n    return endOfLine(true, cm, line, lineN, -1)\n  }\n  function lineStartSmart(cm, pos) {\n    var start = lineStart(cm, pos.line);\n    var line = getLine(cm.doc, start.line);\n    var order = getOrder(line, cm.doc.direction);\n    if (!order || order[0].level == 0) {\n      var firstNonWS = Math.max(start.ch, line.text.search(/\\S/));\n      var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch;\n      return Pos(start.line, inWS ? 0 : firstNonWS, start.sticky)\n    }\n    return start\n  }\n\n  // Run a handler that was bound to a key.\n  function doHandleBinding(cm, bound, dropShift) {\n    if (typeof bound == \"string\") {\n      bound = commands[bound];\n      if (!bound) { return false }\n    }\n    // Ensure previous input has been read, so that the handler sees a\n    // consistent view of the document\n    cm.display.input.ensurePolled();\n    var prevShift = cm.display.shift, done = false;\n    try {\n      if (cm.isReadOnly()) { cm.state.suppressEdits = true; }\n      if (dropShift) { cm.display.shift = false; }\n      done = bound(cm) != Pass;\n    } finally {\n      cm.display.shift = prevShift;\n      cm.state.suppressEdits = false;\n    }\n    return done\n  }\n\n  function lookupKeyForEditor(cm, name, handle) {\n    for (var i = 0; i < cm.state.keyMaps.length; i++) {\n      var result = lookupKey(name, cm.state.keyMaps[i], handle, cm);\n      if (result) { return result }\n    }\n    return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm))\n      || lookupKey(name, cm.options.keyMap, handle, cm)\n  }\n\n  // Note that, despite the name, this function is also used to check\n  // for bound mouse clicks.\n\n  var stopSeq = new Delayed;\n\n  function dispatchKey(cm, name, e, handle) {\n    var seq = cm.state.keySeq;\n    if (seq) {\n      if (isModifierKey(name)) { return \"handled\" }\n      if (/\\'$/.test(name))\n        { cm.state.keySeq = null; }\n      else\n        { stopSeq.set(50, function () {\n          if (cm.state.keySeq == seq) {\n            cm.state.keySeq = null;\n            cm.display.input.reset();\n          }\n        }); }\n      if (dispatchKeyInner(cm, seq + \" \" + name, e, handle)) { return true }\n    }\n    return dispatchKeyInner(cm, name, e, handle)\n  }\n\n  function dispatchKeyInner(cm, name, e, handle) {\n    var result = lookupKeyForEditor(cm, name, handle);\n\n    if (result == \"multi\")\n      { cm.state.keySeq = name; }\n    if (result == \"handled\")\n      { signalLater(cm, \"keyHandled\", cm, name, e); }\n\n    if (result == \"handled\" || result == \"multi\") {\n      e_preventDefault(e);\n      restartBlink(cm);\n    }\n\n    return !!result\n  }\n\n  // Handle a key from the keydown event.\n  function handleKeyBinding(cm, e) {\n    var name = keyName(e, true);\n    if (!name) { return false }\n\n    if (e.shiftKey && !cm.state.keySeq) {\n      // First try to resolve full name (including 'Shift-'). Failing\n      // that, see if there is a cursor-motion command (starting with\n      // 'go') bound to the keyname without 'Shift-'.\n      return dispatchKey(cm, \"Shift-\" + name, e, function (b) { return doHandleBinding(cm, b, true); })\n          || dispatchKey(cm, name, e, function (b) {\n               if (typeof b == \"string\" ? /^go[A-Z]/.test(b) : b.motion)\n                 { return doHandleBinding(cm, b) }\n             })\n    } else {\n      return dispatchKey(cm, name, e, function (b) { return doHandleBinding(cm, b); })\n    }\n  }\n\n  // Handle a key from the keypress event\n  function handleCharBinding(cm, e, ch) {\n    return dispatchKey(cm, \"'\" + ch + \"'\", e, function (b) { return doHandleBinding(cm, b, true); })\n  }\n\n  var lastStoppedKey = null;\n  function onKeyDown(e) {\n    var cm = this;\n    if (e.target && e.target != cm.display.input.getField()) { return }\n    cm.curOp.focus = activeElt();\n    if (signalDOMEvent(cm, e)) { return }\n    // IE does strange things with escape.\n    if (ie && ie_version < 11 && e.keyCode == 27) { e.returnValue = false; }\n    var code = e.keyCode;\n    cm.display.shift = code == 16 || e.shiftKey;\n    var handled = handleKeyBinding(cm, e);\n    if (presto) {\n      lastStoppedKey = handled ? code : null;\n      // Opera has no cut event... we try to at least catch the key combo\n      if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))\n        { cm.replaceSelection(\"\", null, \"cut\"); }\n    }\n    if (gecko && !mac && !handled && code == 46 && e.shiftKey && !e.ctrlKey && document.execCommand)\n      { document.execCommand(\"cut\"); }\n\n    // Turn mouse into crosshair when Alt is held on Mac.\n    if (code == 18 && !/\\bCodeMirror-crosshair\\b/.test(cm.display.lineDiv.className))\n      { showCrossHair(cm); }\n  }\n\n  function showCrossHair(cm) {\n    var lineDiv = cm.display.lineDiv;\n    addClass(lineDiv, \"CodeMirror-crosshair\");\n\n    function up(e) {\n      if (e.keyCode == 18 || !e.altKey) {\n        rmClass(lineDiv, \"CodeMirror-crosshair\");\n        off(document, \"keyup\", up);\n        off(document, \"mouseover\", up);\n      }\n    }\n    on(document, \"keyup\", up);\n    on(document, \"mouseover\", up);\n  }\n\n  function onKeyUp(e) {\n    if (e.keyCode == 16) { this.doc.sel.shift = false; }\n    signalDOMEvent(this, e);\n  }\n\n  function onKeyPress(e) {\n    var cm = this;\n    if (e.target && e.target != cm.display.input.getField()) { return }\n    if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) { return }\n    var keyCode = e.keyCode, charCode = e.charCode;\n    if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return}\n    if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) { return }\n    var ch = String.fromCharCode(charCode == null ? keyCode : charCode);\n    // Some browsers fire keypress events for backspace\n    if (ch == \"\\x08\") { return }\n    if (handleCharBinding(cm, e, ch)) { return }\n    cm.display.input.onKeyPress(e);\n  }\n\n  var DOUBLECLICK_DELAY = 400;\n\n  var PastClick = function(time, pos, button) {\n    this.time = time;\n    this.pos = pos;\n    this.button = button;\n  };\n\n  PastClick.prototype.compare = function (time, pos, button) {\n    return this.time + DOUBLECLICK_DELAY > time &&\n      cmp(pos, this.pos) == 0 && button == this.button\n  };\n\n  var lastClick, lastDoubleClick;\n  function clickRepeat(pos, button) {\n    var now = +new Date;\n    if (lastDoubleClick && lastDoubleClick.compare(now, pos, button)) {\n      lastClick = lastDoubleClick = null;\n      return \"triple\"\n    } else if (lastClick && lastClick.compare(now, pos, button)) {\n      lastDoubleClick = new PastClick(now, pos, button);\n      lastClick = null;\n      return \"double\"\n    } else {\n      lastClick = new PastClick(now, pos, button);\n      lastDoubleClick = null;\n      return \"single\"\n    }\n  }\n\n  // A mouse down can be a single click, double click, triple click,\n  // start of selection drag, start of text drag, new cursor\n  // (ctrl-click), rectangle drag (alt-drag), or xwin\n  // middle-click-paste. Or it might be a click on something we should\n  // not interfere with, such as a scrollbar or widget.\n  function onMouseDown(e) {\n    var cm = this, display = cm.display;\n    if (signalDOMEvent(cm, e) || display.activeTouch && display.input.supportsTouch()) { return }\n    display.input.ensurePolled();\n    display.shift = e.shiftKey;\n\n    if (eventInWidget(display, e)) {\n      if (!webkit) {\n        // Briefly turn off draggability, to allow widgets to do\n        // normal dragging things.\n        display.scroller.draggable = false;\n        setTimeout(function () { return display.scroller.draggable = true; }, 100);\n      }\n      return\n    }\n    if (clickInGutter(cm, e)) { return }\n    var pos = posFromMouse(cm, e), button = e_button(e), repeat = pos ? clickRepeat(pos, button) : \"single\";\n    window.focus();\n\n    // #3261: make sure, that we're not starting a second selection\n    if (button == 1 && cm.state.selectingText)\n      { cm.state.selectingText(e); }\n\n    if (pos && handleMappedButton(cm, button, pos, repeat, e)) { return }\n\n    if (button == 1) {\n      if (pos) { leftButtonDown(cm, pos, repeat, e); }\n      else if (e_target(e) == display.scroller) { e_preventDefault(e); }\n    } else if (button == 2) {\n      if (pos) { extendSelection(cm.doc, pos); }\n      setTimeout(function () { return display.input.focus(); }, 20);\n    } else if (button == 3) {\n      if (captureRightClick) { cm.display.input.onContextMenu(e); }\n      else { delayBlurEvent(cm); }\n    }\n  }\n\n  function handleMappedButton(cm, button, pos, repeat, event) {\n    var name = \"Click\";\n    if (repeat == \"double\") { name = \"Double\" + name; }\n    else if (repeat == \"triple\") { name = \"Triple\" + name; }\n    name = (button == 1 ? \"Left\" : button == 2 ? \"Middle\" : \"Right\") + name;\n\n    return dispatchKey(cm,  addModifierNames(name, event), event, function (bound) {\n      if (typeof bound == \"string\") { bound = commands[bound]; }\n      if (!bound) { return false }\n      var done = false;\n      try {\n        if (cm.isReadOnly()) { cm.state.suppressEdits = true; }\n        done = bound(cm, pos) != Pass;\n      } finally {\n        cm.state.suppressEdits = false;\n      }\n      return done\n    })\n  }\n\n  function configureMouse(cm, repeat, event) {\n    var option = cm.getOption(\"configureMouse\");\n    var value = option ? option(cm, repeat, event) : {};\n    if (value.unit == null) {\n      var rect = chromeOS ? event.shiftKey && event.metaKey : event.altKey;\n      value.unit = rect ? \"rectangle\" : repeat == \"single\" ? \"char\" : repeat == \"double\" ? \"word\" : \"line\";\n    }\n    if (value.extend == null || cm.doc.extend) { value.extend = cm.doc.extend || event.shiftKey; }\n    if (value.addNew == null) { value.addNew = mac ? event.metaKey : event.ctrlKey; }\n    if (value.moveOnDrag == null) { value.moveOnDrag = !(mac ? event.altKey : event.ctrlKey); }\n    return value\n  }\n\n  function leftButtonDown(cm, pos, repeat, event) {\n    if (ie) { setTimeout(bind(ensureFocus, cm), 0); }\n    else { cm.curOp.focus = activeElt(); }\n\n    var behavior = configureMouse(cm, repeat, event);\n\n    var sel = cm.doc.sel, contained;\n    if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() &&\n        repeat == \"single\" && (contained = sel.contains(pos)) > -1 &&\n        (cmp((contained = sel.ranges[contained]).from(), pos) < 0 || pos.xRel > 0) &&\n        (cmp(contained.to(), pos) > 0 || pos.xRel < 0))\n      { leftButtonStartDrag(cm, event, pos, behavior); }\n    else\n      { leftButtonSelect(cm, event, pos, behavior); }\n  }\n\n  // Start a text drag. When it ends, see if any dragging actually\n  // happen, and treat as a click if it didn't.\n  function leftButtonStartDrag(cm, event, pos, behavior) {\n    var display = cm.display, moved = false;\n    var dragEnd = operation(cm, function (e) {\n      if (webkit) { display.scroller.draggable = false; }\n      cm.state.draggingText = false;\n      if (cm.state.delayingBlurEvent) {\n        if (cm.hasFocus()) { cm.state.delayingBlurEvent = false; }\n        else { delayBlurEvent(cm); }\n      }\n      off(display.wrapper.ownerDocument, \"mouseup\", dragEnd);\n      off(display.wrapper.ownerDocument, \"mousemove\", mouseMove);\n      off(display.scroller, \"dragstart\", dragStart);\n      off(display.scroller, \"drop\", dragEnd);\n      if (!moved) {\n        e_preventDefault(e);\n        if (!behavior.addNew)\n          { extendSelection(cm.doc, pos, null, null, behavior.extend); }\n        // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)\n        if ((webkit && !safari) || ie && ie_version == 9)\n          { setTimeout(function () {display.wrapper.ownerDocument.body.focus({preventScroll: true}); display.input.focus();}, 20); }\n        else\n          { display.input.focus(); }\n      }\n    });\n    var mouseMove = function(e2) {\n      moved = moved || Math.abs(event.clientX - e2.clientX) + Math.abs(event.clientY - e2.clientY) >= 10;\n    };\n    var dragStart = function () { return moved = true; };\n    // Let the drag handler handle this.\n    if (webkit) { display.scroller.draggable = true; }\n    cm.state.draggingText = dragEnd;\n    dragEnd.copy = !behavior.moveOnDrag;\n    on(display.wrapper.ownerDocument, \"mouseup\", dragEnd);\n    on(display.wrapper.ownerDocument, \"mousemove\", mouseMove);\n    on(display.scroller, \"dragstart\", dragStart);\n    on(display.scroller, \"drop\", dragEnd);\n\n    cm.state.delayingBlurEvent = true;\n    setTimeout(function () { return display.input.focus(); }, 20);\n    // IE's approach to draggable\n    if (display.scroller.dragDrop) { display.scroller.dragDrop(); }\n  }\n\n  function rangeForUnit(cm, pos, unit) {\n    if (unit == \"char\") { return new Range(pos, pos) }\n    if (unit == \"word\") { return cm.findWordAt(pos) }\n    if (unit == \"line\") { return new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))) }\n    var result = unit(cm, pos);\n    return new Range(result.from, result.to)\n  }\n\n  // Normal selection, as opposed to text dragging.\n  function leftButtonSelect(cm, event, start, behavior) {\n    if (ie) { delayBlurEvent(cm); }\n    var display = cm.display, doc = cm.doc;\n    e_preventDefault(event);\n\n    var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges;\n    if (behavior.addNew && !behavior.extend) {\n      ourIndex = doc.sel.contains(start);\n      if (ourIndex > -1)\n        { ourRange = ranges[ourIndex]; }\n      else\n        { ourRange = new Range(start, start); }\n    } else {\n      ourRange = doc.sel.primary();\n      ourIndex = doc.sel.primIndex;\n    }\n\n    if (behavior.unit == \"rectangle\") {\n      if (!behavior.addNew) { ourRange = new Range(start, start); }\n      start = posFromMouse(cm, event, true, true);\n      ourIndex = -1;\n    } else {\n      var range = rangeForUnit(cm, start, behavior.unit);\n      if (behavior.extend)\n        { ourRange = extendRange(ourRange, range.anchor, range.head, behavior.extend); }\n      else\n        { ourRange = range; }\n    }\n\n    if (!behavior.addNew) {\n      ourIndex = 0;\n      setSelection(doc, new Selection([ourRange], 0), sel_mouse);\n      startSel = doc.sel;\n    } else if (ourIndex == -1) {\n      ourIndex = ranges.length;\n      setSelection(doc, normalizeSelection(cm, ranges.concat([ourRange]), ourIndex),\n                   {scroll: false, origin: \"*mouse\"});\n    } else if (ranges.length > 1 && ranges[ourIndex].empty() && behavior.unit == \"char\" && !behavior.extend) {\n      setSelection(doc, normalizeSelection(cm, ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0),\n                   {scroll: false, origin: \"*mouse\"});\n      startSel = doc.sel;\n    } else {\n      replaceOneSelection(doc, ourIndex, ourRange, sel_mouse);\n    }\n\n    var lastPos = start;\n    function extendTo(pos) {\n      if (cmp(lastPos, pos) == 0) { return }\n      lastPos = pos;\n\n      if (behavior.unit == \"rectangle\") {\n        var ranges = [], tabSize = cm.options.tabSize;\n        var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize);\n        var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize);\n        var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol);\n        for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));\n             line <= end; line++) {\n          var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize);\n          if (left == right)\n            { ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos))); }\n          else if (text.length > leftPos)\n            { ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize)))); }\n        }\n        if (!ranges.length) { ranges.push(new Range(start, start)); }\n        setSelection(doc, normalizeSelection(cm, startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),\n                     {origin: \"*mouse\", scroll: false});\n        cm.scrollIntoView(pos);\n      } else {\n        var oldRange = ourRange;\n        var range = rangeForUnit(cm, pos, behavior.unit);\n        var anchor = oldRange.anchor, head;\n        if (cmp(range.anchor, anchor) > 0) {\n          head = range.head;\n          anchor = minPos(oldRange.from(), range.anchor);\n        } else {\n          head = range.anchor;\n          anchor = maxPos(oldRange.to(), range.head);\n        }\n        var ranges$1 = startSel.ranges.slice(0);\n        ranges$1[ourIndex] = bidiSimplify(cm, new Range(clipPos(doc, anchor), head));\n        setSelection(doc, normalizeSelection(cm, ranges$1, ourIndex), sel_mouse);\n      }\n    }\n\n    var editorSize = display.wrapper.getBoundingClientRect();\n    // Used to ensure timeout re-tries don't fire when another extend\n    // happened in the meantime (clearTimeout isn't reliable -- at\n    // least on Chrome, the timeouts still happen even when cleared,\n    // if the clear happens after their scheduled firing time).\n    var counter = 0;\n\n    function extend(e) {\n      var curCount = ++counter;\n      var cur = posFromMouse(cm, e, true, behavior.unit == \"rectangle\");\n      if (!cur) { return }\n      if (cmp(cur, lastPos) != 0) {\n        cm.curOp.focus = activeElt();\n        extendTo(cur);\n        var visible = visibleLines(display, doc);\n        if (cur.line >= visible.to || cur.line < visible.from)\n          { setTimeout(operation(cm, function () {if (counter == curCount) { extend(e); }}), 150); }\n      } else {\n        var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;\n        if (outside) { setTimeout(operation(cm, function () {\n          if (counter != curCount) { return }\n          display.scroller.scrollTop += outside;\n          extend(e);\n        }), 50); }\n      }\n    }\n\n    function done(e) {\n      cm.state.selectingText = false;\n      counter = Infinity;\n      // If e is null or undefined we interpret this as someone trying\n      // to explicitly cancel the selection rather than the user\n      // letting go of the mouse button.\n      if (e) {\n        e_preventDefault(e);\n        display.input.focus();\n      }\n      off(display.wrapper.ownerDocument, \"mousemove\", move);\n      off(display.wrapper.ownerDocument, \"mouseup\", up);\n      doc.history.lastSelOrigin = null;\n    }\n\n    var move = operation(cm, function (e) {\n      if (e.buttons === 0 || !e_button(e)) { done(e); }\n      else { extend(e); }\n    });\n    var up = operation(cm, done);\n    cm.state.selectingText = up;\n    on(display.wrapper.ownerDocument, \"mousemove\", move);\n    on(display.wrapper.ownerDocument, \"mouseup\", up);\n  }\n\n  // Used when mouse-selecting to adjust the anchor to the proper side\n  // of a bidi jump depending on the visual position of the head.\n  function bidiSimplify(cm, range) {\n    var anchor = range.anchor;\n    var head = range.head;\n    var anchorLine = getLine(cm.doc, anchor.line);\n    if (cmp(anchor, head) == 0 && anchor.sticky == head.sticky) { return range }\n    var order = getOrder(anchorLine);\n    if (!order) { return range }\n    var index = getBidiPartAt(order, anchor.ch, anchor.sticky), part = order[index];\n    if (part.from != anchor.ch && part.to != anchor.ch) { return range }\n    var boundary = index + ((part.from == anchor.ch) == (part.level != 1) ? 0 : 1);\n    if (boundary == 0 || boundary == order.length) { return range }\n\n    // Compute the relative visual position of the head compared to the\n    // anchor (<0 is to the left, >0 to the right)\n    var leftSide;\n    if (head.line != anchor.line) {\n      leftSide = (head.line - anchor.line) * (cm.doc.direction == \"ltr\" ? 1 : -1) > 0;\n    } else {\n      var headIndex = getBidiPartAt(order, head.ch, head.sticky);\n      var dir = headIndex - index || (head.ch - anchor.ch) * (part.level == 1 ? -1 : 1);\n      if (headIndex == boundary - 1 || headIndex == boundary)\n        { leftSide = dir < 0; }\n      else\n        { leftSide = dir > 0; }\n    }\n\n    var usePart = order[boundary + (leftSide ? -1 : 0)];\n    var from = leftSide == (usePart.level == 1);\n    var ch = from ? usePart.from : usePart.to, sticky = from ? \"after\" : \"before\";\n    return anchor.ch == ch && anchor.sticky == sticky ? range : new Range(new Pos(anchor.line, ch, sticky), head)\n  }\n\n\n  // Determines whether an event happened in the gutter, and fires the\n  // handlers for the corresponding event.\n  function gutterEvent(cm, e, type, prevent) {\n    var mX, mY;\n    if (e.touches) {\n      mX = e.touches[0].clientX;\n      mY = e.touches[0].clientY;\n    } else {\n      try { mX = e.clientX; mY = e.clientY; }\n      catch(e$1) { return false }\n    }\n    if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) { return false }\n    if (prevent) { e_preventDefault(e); }\n\n    var display = cm.display;\n    var lineBox = display.lineDiv.getBoundingClientRect();\n\n    if (mY > lineBox.bottom || !hasHandler(cm, type)) { return e_defaultPrevented(e) }\n    mY -= lineBox.top - display.viewOffset;\n\n    for (var i = 0; i < cm.display.gutterSpecs.length; ++i) {\n      var g = display.gutters.childNodes[i];\n      if (g && g.getBoundingClientRect().right >= mX) {\n        var line = lineAtHeight(cm.doc, mY);\n        var gutter = cm.display.gutterSpecs[i];\n        signal(cm, type, cm, line, gutter.className, e);\n        return e_defaultPrevented(e)\n      }\n    }\n  }\n\n  function clickInGutter(cm, e) {\n    return gutterEvent(cm, e, \"gutterClick\", true)\n  }\n\n  // CONTEXT MENU HANDLING\n\n  // To make the context menu work, we need to briefly unhide the\n  // textarea (making it as unobtrusive as possible) to let the\n  // right-click take effect on it.\n  function onContextMenu(cm, e) {\n    if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) { return }\n    if (signalDOMEvent(cm, e, \"contextmenu\")) { return }\n    if (!captureRightClick) { cm.display.input.onContextMenu(e); }\n  }\n\n  function contextMenuInGutter(cm, e) {\n    if (!hasHandler(cm, \"gutterContextMenu\")) { return false }\n    return gutterEvent(cm, e, \"gutterContextMenu\", false)\n  }\n\n  function themeChanged(cm) {\n    cm.display.wrapper.className = cm.display.wrapper.className.replace(/\\s*cm-s-\\S+/g, \"\") +\n      cm.options.theme.replace(/(^|\\s)\\s*/g, \" cm-s-\");\n    clearCaches(cm);\n  }\n\n  var Init = {toString: function(){return \"CodeMirror.Init\"}};\n\n  var defaults = {};\n  var optionHandlers = {};\n\n  function defineOptions(CodeMirror) {\n    var optionHandlers = CodeMirror.optionHandlers;\n\n    function option(name, deflt, handle, notOnInit) {\n      CodeMirror.defaults[name] = deflt;\n      if (handle) { optionHandlers[name] =\n        notOnInit ? function (cm, val, old) {if (old != Init) { handle(cm, val, old); }} : handle; }\n    }\n\n    CodeMirror.defineOption = option;\n\n    // Passed to option handlers when there is no old value.\n    CodeMirror.Init = Init;\n\n    // These two are, on init, called from the constructor because they\n    // have to be initialized before the editor can start at all.\n    option(\"value\", \"\", function (cm, val) { return cm.setValue(val); }, true);\n    option(\"mode\", null, function (cm, val) {\n      cm.doc.modeOption = val;\n      loadMode(cm);\n    }, true);\n\n    option(\"indentUnit\", 2, loadMode, true);\n    option(\"indentWithTabs\", false);\n    option(\"smartIndent\", true);\n    option(\"tabSize\", 4, function (cm) {\n      resetModeState(cm);\n      clearCaches(cm);\n      regChange(cm);\n    }, true);\n\n    option(\"lineSeparator\", null, function (cm, val) {\n      cm.doc.lineSep = val;\n      if (!val) { return }\n      var newBreaks = [], lineNo = cm.doc.first;\n      cm.doc.iter(function (line) {\n        for (var pos = 0;;) {\n          var found = line.text.indexOf(val, pos);\n          if (found == -1) { break }\n          pos = found + val.length;\n          newBreaks.push(Pos(lineNo, found));\n        }\n        lineNo++;\n      });\n      for (var i = newBreaks.length - 1; i >= 0; i--)\n        { replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length)); }\n    });\n    option(\"specialChars\", /[\\u0000-\\u001f\\u007f-\\u009f\\u00ad\\u061c\\u200b\\u200e\\u200f\\u2028\\u2029\\ufeff\\ufff9-\\ufffc]/g, function (cm, val, old) {\n      cm.state.specialChars = new RegExp(val.source + (val.test(\"\\t\") ? \"\" : \"|\\t\"), \"g\");\n      if (old != Init) { cm.refresh(); }\n    });\n    option(\"specialCharPlaceholder\", defaultSpecialCharPlaceholder, function (cm) { return cm.refresh(); }, true);\n    option(\"electricChars\", true);\n    option(\"inputStyle\", mobile ? \"contenteditable\" : \"textarea\", function () {\n      throw new Error(\"inputStyle can not (yet) be changed in a running editor\") // FIXME\n    }, true);\n    option(\"spellcheck\", false, function (cm, val) { return cm.getInputField().spellcheck = val; }, true);\n    option(\"autocorrect\", false, function (cm, val) { return cm.getInputField().autocorrect = val; }, true);\n    option(\"autocapitalize\", false, function (cm, val) { return cm.getInputField().autocapitalize = val; }, true);\n    option(\"rtlMoveVisually\", !windows);\n    option(\"wholeLineUpdateBefore\", true);\n\n    option(\"theme\", \"default\", function (cm) {\n      themeChanged(cm);\n      updateGutters(cm);\n    }, true);\n    option(\"keyMap\", \"default\", function (cm, val, old) {\n      var next = getKeyMap(val);\n      var prev = old != Init && getKeyMap(old);\n      if (prev && prev.detach) { prev.detach(cm, next); }\n      if (next.attach) { next.attach(cm, prev || null); }\n    });\n    option(\"extraKeys\", null);\n    option(\"configureMouse\", null);\n\n    option(\"lineWrapping\", false, wrappingChanged, true);\n    option(\"gutters\", [], function (cm, val) {\n      cm.display.gutterSpecs = getGutters(val, cm.options.lineNumbers);\n      updateGutters(cm);\n    }, true);\n    option(\"fixedGutter\", true, function (cm, val) {\n      cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + \"px\" : \"0\";\n      cm.refresh();\n    }, true);\n    option(\"coverGutterNextToScrollbar\", false, function (cm) { return updateScrollbars(cm); }, true);\n    option(\"scrollbarStyle\", \"native\", function (cm) {\n      initScrollbars(cm);\n      updateScrollbars(cm);\n      cm.display.scrollbars.setScrollTop(cm.doc.scrollTop);\n      cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft);\n    }, true);\n    option(\"lineNumbers\", false, function (cm, val) {\n      cm.display.gutterSpecs = getGutters(cm.options.gutters, val);\n      updateGutters(cm);\n    }, true);\n    option(\"firstLineNumber\", 1, updateGutters, true);\n    option(\"lineNumberFormatter\", function (integer) { return integer; }, updateGutters, true);\n    option(\"showCursorWhenSelecting\", false, updateSelection, true);\n\n    option(\"resetSelectionOnContextMenu\", true);\n    option(\"lineWiseCopyCut\", true);\n    option(\"pasteLinesPerSelection\", true);\n    option(\"selectionsMayTouch\", false);\n\n    option(\"readOnly\", false, function (cm, val) {\n      if (val == \"nocursor\") {\n        onBlur(cm);\n        cm.display.input.blur();\n      }\n      cm.display.input.readOnlyChanged(val);\n    });\n\n    option(\"screenReaderLabel\", null, function (cm, val) {\n      val = (val === '') ? null : val;\n      cm.display.input.screenReaderLabelChanged(val);\n    });\n\n    option(\"disableInput\", false, function (cm, val) {if (!val) { cm.display.input.reset(); }}, true);\n    option(\"dragDrop\", true, dragDropChanged);\n    option(\"allowDropFileTypes\", null);\n\n    option(\"cursorBlinkRate\", 530);\n    option(\"cursorScrollMargin\", 0);\n    option(\"cursorHeight\", 1, updateSelection, true);\n    option(\"singleCursorHeightPerLine\", true, updateSelection, true);\n    option(\"workTime\", 100);\n    option(\"workDelay\", 100);\n    option(\"flattenSpans\", true, resetModeState, true);\n    option(\"addModeClass\", false, resetModeState, true);\n    option(\"pollInterval\", 100);\n    option(\"undoDepth\", 200, function (cm, val) { return cm.doc.history.undoDepth = val; });\n    option(\"historyEventDelay\", 1250);\n    option(\"viewportMargin\", 10, function (cm) { return cm.refresh(); }, true);\n    option(\"maxHighlightLength\", 10000, resetModeState, true);\n    option(\"moveInputWithCursor\", true, function (cm, val) {\n      if (!val) { cm.display.input.resetPosition(); }\n    });\n\n    option(\"tabindex\", null, function (cm, val) { return cm.display.input.getField().tabIndex = val || \"\"; });\n    option(\"autofocus\", null);\n    option(\"direction\", \"ltr\", function (cm, val) { return cm.doc.setDirection(val); }, true);\n    option(\"phrases\", null);\n  }\n\n  function dragDropChanged(cm, value, old) {\n    var wasOn = old && old != Init;\n    if (!value != !wasOn) {\n      var funcs = cm.display.dragFunctions;\n      var toggle = value ? on : off;\n      toggle(cm.display.scroller, \"dragstart\", funcs.start);\n      toggle(cm.display.scroller, \"dragenter\", funcs.enter);\n      toggle(cm.display.scroller, \"dragover\", funcs.over);\n      toggle(cm.display.scroller, \"dragleave\", funcs.leave);\n      toggle(cm.display.scroller, \"drop\", funcs.drop);\n    }\n  }\n\n  function wrappingChanged(cm) {\n    if (cm.options.lineWrapping) {\n      addClass(cm.display.wrapper, \"CodeMirror-wrap\");\n      cm.display.sizer.style.minWidth = \"\";\n      cm.display.sizerWidth = null;\n    } else {\n      rmClass(cm.display.wrapper, \"CodeMirror-wrap\");\n      findMaxLine(cm);\n    }\n    estimateLineHeights(cm);\n    regChange(cm);\n    clearCaches(cm);\n    setTimeout(function () { return updateScrollbars(cm); }, 100);\n  }\n\n  // A CodeMirror instance represents an editor. This is the object\n  // that user code is usually dealing with.\n\n  function CodeMirror(place, options) {\n    var this$1 = this;\n\n    if (!(this instanceof CodeMirror)) { return new CodeMirror(place, options) }\n\n    this.options = options = options ? copyObj(options) : {};\n    // Determine effective options based on given values and defaults.\n    copyObj(defaults, options, false);\n\n    var doc = options.value;\n    if (typeof doc == \"string\") { doc = new Doc(doc, options.mode, null, options.lineSeparator, options.direction); }\n    else if (options.mode) { doc.modeOption = options.mode; }\n    this.doc = doc;\n\n    var input = new CodeMirror.inputStyles[options.inputStyle](this);\n    var display = this.display = new Display(place, doc, input, options);\n    display.wrapper.CodeMirror = this;\n    themeChanged(this);\n    if (options.lineWrapping)\n      { this.display.wrapper.className += \" CodeMirror-wrap\"; }\n    initScrollbars(this);\n\n    this.state = {\n      keyMaps: [],  // stores maps added by addKeyMap\n      overlays: [], // highlighting overlays, as added by addOverlay\n      modeGen: 0,   // bumped when mode/overlay changes, used to invalidate highlighting info\n      overwrite: false,\n      delayingBlurEvent: false,\n      focused: false,\n      suppressEdits: false, // used to disable editing during key handlers when in readOnly mode\n      pasteIncoming: -1, cutIncoming: -1, // help recognize paste/cut edits in input.poll\n      selectingText: false,\n      draggingText: false,\n      highlight: new Delayed(), // stores highlight worker timeout\n      keySeq: null,  // Unfinished key sequence\n      specialChars: null\n    };\n\n    if (options.autofocus && !mobile) { display.input.focus(); }\n\n    // Override magic textarea content restore that IE sometimes does\n    // on our hidden textarea on reload\n    if (ie && ie_version < 11) { setTimeout(function () { return this$1.display.input.reset(true); }, 20); }\n\n    registerEventHandlers(this);\n    ensureGlobalHandlers();\n\n    startOperation(this);\n    this.curOp.forceUpdate = true;\n    attachDoc(this, doc);\n\n    if ((options.autofocus && !mobile) || this.hasFocus())\n      { setTimeout(function () {\n        if (this$1.hasFocus() && !this$1.state.focused) { onFocus(this$1); }\n      }, 20); }\n    else\n      { onBlur(this); }\n\n    for (var opt in optionHandlers) { if (optionHandlers.hasOwnProperty(opt))\n      { optionHandlers[opt](this, options[opt], Init); } }\n    maybeUpdateLineNumberWidth(this);\n    if (options.finishInit) { options.finishInit(this); }\n    for (var i = 0; i < initHooks.length; ++i) { initHooks[i](this); }\n    endOperation(this);\n    // Suppress optimizelegibility in Webkit, since it breaks text\n    // measuring on line wrapping boundaries.\n    if (webkit && options.lineWrapping &&\n        getComputedStyle(display.lineDiv).textRendering == \"optimizelegibility\")\n      { display.lineDiv.style.textRendering = \"auto\"; }\n  }\n\n  // The default configuration options.\n  CodeMirror.defaults = defaults;\n  // Functions to run when options are changed.\n  CodeMirror.optionHandlers = optionHandlers;\n\n  // Attach the necessary event handlers when initializing the editor\n  function registerEventHandlers(cm) {\n    var d = cm.display;\n    on(d.scroller, \"mousedown\", operation(cm, onMouseDown));\n    // Older IE's will not fire a second mousedown for a double click\n    if (ie && ie_version < 11)\n      { on(d.scroller, \"dblclick\", operation(cm, function (e) {\n        if (signalDOMEvent(cm, e)) { return }\n        var pos = posFromMouse(cm, e);\n        if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) { return }\n        e_preventDefault(e);\n        var word = cm.findWordAt(pos);\n        extendSelection(cm.doc, word.anchor, word.head);\n      })); }\n    else\n      { on(d.scroller, \"dblclick\", function (e) { return signalDOMEvent(cm, e) || e_preventDefault(e); }); }\n    // Some browsers fire contextmenu *after* opening the menu, at\n    // which point we can't mess with it anymore. Context menu is\n    // handled in onMouseDown for these browsers.\n    on(d.scroller, \"contextmenu\", function (e) { return onContextMenu(cm, e); });\n    on(d.input.getField(), \"contextmenu\", function (e) {\n      if (!d.scroller.contains(e.target)) { onContextMenu(cm, e); }\n    });\n\n    // Used to suppress mouse event handling when a touch happens\n    var touchFinished, prevTouch = {end: 0};\n    function finishTouch() {\n      if (d.activeTouch) {\n        touchFinished = setTimeout(function () { return d.activeTouch = null; }, 1000);\n        prevTouch = d.activeTouch;\n        prevTouch.end = +new Date;\n      }\n    }\n    function isMouseLikeTouchEvent(e) {\n      if (e.touches.length != 1) { return false }\n      var touch = e.touches[0];\n      return touch.radiusX <= 1 && touch.radiusY <= 1\n    }\n    function farAway(touch, other) {\n      if (other.left == null) { return true }\n      var dx = other.left - touch.left, dy = other.top - touch.top;\n      return dx * dx + dy * dy > 20 * 20\n    }\n    on(d.scroller, \"touchstart\", function (e) {\n      if (!signalDOMEvent(cm, e) && !isMouseLikeTouchEvent(e) && !clickInGutter(cm, e)) {\n        d.input.ensurePolled();\n        clearTimeout(touchFinished);\n        var now = +new Date;\n        d.activeTouch = {start: now, moved: false,\n                         prev: now - prevTouch.end <= 300 ? prevTouch : null};\n        if (e.touches.length == 1) {\n          d.activeTouch.left = e.touches[0].pageX;\n          d.activeTouch.top = e.touches[0].pageY;\n        }\n      }\n    });\n    on(d.scroller, \"touchmove\", function () {\n      if (d.activeTouch) { d.activeTouch.moved = true; }\n    });\n    on(d.scroller, \"touchend\", function (e) {\n      var touch = d.activeTouch;\n      if (touch && !eventInWidget(d, e) && touch.left != null &&\n          !touch.moved && new Date - touch.start < 300) {\n        var pos = cm.coordsChar(d.activeTouch, \"page\"), range;\n        if (!touch.prev || farAway(touch, touch.prev)) // Single tap\n          { range = new Range(pos, pos); }\n        else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap\n          { range = cm.findWordAt(pos); }\n        else // Triple tap\n          { range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))); }\n        cm.setSelection(range.anchor, range.head);\n        cm.focus();\n        e_preventDefault(e);\n      }\n      finishTouch();\n    });\n    on(d.scroller, \"touchcancel\", finishTouch);\n\n    // Sync scrolling between fake scrollbars and real scrollable\n    // area, ensure viewport is updated when scrolling.\n    on(d.scroller, \"scroll\", function () {\n      if (d.scroller.clientHeight) {\n        updateScrollTop(cm, d.scroller.scrollTop);\n        setScrollLeft(cm, d.scroller.scrollLeft, true);\n        signal(cm, \"scroll\", cm);\n      }\n    });\n\n    // Listen to wheel events in order to try and update the viewport on time.\n    on(d.scroller, \"mousewheel\", function (e) { return onScrollWheel(cm, e); });\n    on(d.scroller, \"DOMMouseScroll\", function (e) { return onScrollWheel(cm, e); });\n\n    // Prevent wrapper from ever scrolling\n    on(d.wrapper, \"scroll\", function () { return d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });\n\n    d.dragFunctions = {\n      enter: function (e) {if (!signalDOMEvent(cm, e)) { e_stop(e); }},\n      over: function (e) {if (!signalDOMEvent(cm, e)) { onDragOver(cm, e); e_stop(e); }},\n      start: function (e) { return onDragStart(cm, e); },\n      drop: operation(cm, onDrop),\n      leave: function (e) {if (!signalDOMEvent(cm, e)) { clearDragCursor(cm); }}\n    };\n\n    var inp = d.input.getField();\n    on(inp, \"keyup\", function (e) { return onKeyUp.call(cm, e); });\n    on(inp, \"keydown\", operation(cm, onKeyDown));\n    on(inp, \"keypress\", operation(cm, onKeyPress));\n    on(inp, \"focus\", function (e) { return onFocus(cm, e); });\n    on(inp, \"blur\", function (e) { return onBlur(cm, e); });\n  }\n\n  var initHooks = [];\n  CodeMirror.defineInitHook = function (f) { return initHooks.push(f); };\n\n  // Indent the given line. The how parameter can be \"smart\",\n  // \"add\"/null, \"subtract\", or \"prev\". When aggressive is false\n  // (typically set to true for forced single-line indents), empty\n  // lines are not indented, and places where the mode returns Pass\n  // are left alone.\n  function indentLine(cm, n, how, aggressive) {\n    var doc = cm.doc, state;\n    if (how == null) { how = \"add\"; }\n    if (how == \"smart\") {\n      // Fall back to \"prev\" when the mode doesn't have an indentation\n      // method.\n      if (!doc.mode.indent) { how = \"prev\"; }\n      else { state = getContextBefore(cm, n).state; }\n    }\n\n    var tabSize = cm.options.tabSize;\n    var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);\n    if (line.stateAfter) { line.stateAfter = null; }\n    var curSpaceString = line.text.match(/^\\s*/)[0], indentation;\n    if (!aggressive && !/\\S/.test(line.text)) {\n      indentation = 0;\n      how = \"not\";\n    } else if (how == \"smart\") {\n      indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);\n      if (indentation == Pass || indentation > 150) {\n        if (!aggressive) { return }\n        how = \"prev\";\n      }\n    }\n    if (how == \"prev\") {\n      if (n > doc.first) { indentation = countColumn(getLine(doc, n-1).text, null, tabSize); }\n      else { indentation = 0; }\n    } else if (how == \"add\") {\n      indentation = curSpace + cm.options.indentUnit;\n    } else if (how == \"subtract\") {\n      indentation = curSpace - cm.options.indentUnit;\n    } else if (typeof how == \"number\") {\n      indentation = curSpace + how;\n    }\n    indentation = Math.max(0, indentation);\n\n    var indentString = \"\", pos = 0;\n    if (cm.options.indentWithTabs)\n      { for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += \"\\t\";} }\n    if (pos < indentation) { indentString += spaceStr(indentation - pos); }\n\n    if (indentString != curSpaceString) {\n      replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), \"+input\");\n      line.stateAfter = null;\n      return true\n    } else {\n      // Ensure that, if the cursor was in the whitespace at the start\n      // of the line, it is moved to the end of that space.\n      for (var i$1 = 0; i$1 < doc.sel.ranges.length; i$1++) {\n        var range = doc.sel.ranges[i$1];\n        if (range.head.line == n && range.head.ch < curSpaceString.length) {\n          var pos$1 = Pos(n, curSpaceString.length);\n          replaceOneSelection(doc, i$1, new Range(pos$1, pos$1));\n          break\n        }\n      }\n    }\n  }\n\n  // This will be set to a {lineWise: bool, text: [string]} object, so\n  // that, when pasting, we know what kind of selections the copied\n  // text was made out of.\n  var lastCopied = null;\n\n  function setLastCopied(newLastCopied) {\n    lastCopied = newLastCopied;\n  }\n\n  function applyTextInput(cm, inserted, deleted, sel, origin) {\n    var doc = cm.doc;\n    cm.display.shift = false;\n    if (!sel) { sel = doc.sel; }\n\n    var recent = +new Date - 200;\n    var paste = origin == \"paste\" || cm.state.pasteIncoming > recent;\n    var textLines = splitLinesAuto(inserted), multiPaste = null;\n    // When pasting N lines into N selections, insert one line per selection\n    if (paste && sel.ranges.length > 1) {\n      if (lastCopied && lastCopied.text.join(\"\\n\") == inserted) {\n        if (sel.ranges.length % lastCopied.text.length == 0) {\n          multiPaste = [];\n          for (var i = 0; i < lastCopied.text.length; i++)\n            { multiPaste.push(doc.splitLines(lastCopied.text[i])); }\n        }\n      } else if (textLines.length == sel.ranges.length && cm.options.pasteLinesPerSelection) {\n        multiPaste = map(textLines, function (l) { return [l]; });\n      }\n    }\n\n    var updateInput = cm.curOp.updateInput;\n    // Normal behavior is to insert the new text into every selection\n    for (var i$1 = sel.ranges.length - 1; i$1 >= 0; i$1--) {\n      var range = sel.ranges[i$1];\n      var from = range.from(), to = range.to();\n      if (range.empty()) {\n        if (deleted && deleted > 0) // Handle deletion\n          { from = Pos(from.line, from.ch - deleted); }\n        else if (cm.state.overwrite && !paste) // Handle overwrite\n          { to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)); }\n        else if (paste && lastCopied && lastCopied.lineWise && lastCopied.text.join(\"\\n\") == textLines.join(\"\\n\"))\n          { from = to = Pos(from.line, 0); }\n      }\n      var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i$1 % multiPaste.length] : textLines,\n                         origin: origin || (paste ? \"paste\" : cm.state.cutIncoming > recent ? \"cut\" : \"+input\")};\n      makeChange(cm.doc, changeEvent);\n      signalLater(cm, \"inputRead\", cm, changeEvent);\n    }\n    if (inserted && !paste)\n      { triggerElectric(cm, inserted); }\n\n    ensureCursorVisible(cm);\n    if (cm.curOp.updateInput < 2) { cm.curOp.updateInput = updateInput; }\n    cm.curOp.typing = true;\n    cm.state.pasteIncoming = cm.state.cutIncoming = -1;\n  }\n\n  function handlePaste(e, cm) {\n    var pasted = e.clipboardData && e.clipboardData.getData(\"Text\");\n    if (pasted) {\n      e.preventDefault();\n      if (!cm.isReadOnly() && !cm.options.disableInput)\n        { runInOp(cm, function () { return applyTextInput(cm, pasted, 0, null, \"paste\"); }); }\n      return true\n    }\n  }\n\n  function triggerElectric(cm, inserted) {\n    // When an 'electric' character is inserted, immediately trigger a reindent\n    if (!cm.options.electricChars || !cm.options.smartIndent) { return }\n    var sel = cm.doc.sel;\n\n    for (var i = sel.ranges.length - 1; i >= 0; i--) {\n      var range = sel.ranges[i];\n      if (range.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range.head.line)) { continue }\n      var mode = cm.getModeAt(range.head);\n      var indented = false;\n      if (mode.electricChars) {\n        for (var j = 0; j < mode.electricChars.length; j++)\n          { if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {\n            indented = indentLine(cm, range.head.line, \"smart\");\n            break\n          } }\n      } else if (mode.electricInput) {\n        if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch)))\n          { indented = indentLine(cm, range.head.line, \"smart\"); }\n      }\n      if (indented) { signalLater(cm, \"electricInput\", cm, range.head.line); }\n    }\n  }\n\n  function copyableRanges(cm) {\n    var text = [], ranges = [];\n    for (var i = 0; i < cm.doc.sel.ranges.length; i++) {\n      var line = cm.doc.sel.ranges[i].head.line;\n      var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)};\n      ranges.push(lineRange);\n      text.push(cm.getRange(lineRange.anchor, lineRange.head));\n    }\n    return {text: text, ranges: ranges}\n  }\n\n  function disableBrowserMagic(field, spellcheck, autocorrect, autocapitalize) {\n    field.setAttribute(\"autocorrect\", autocorrect ? \"\" : \"off\");\n    field.setAttribute(\"autocapitalize\", autocapitalize ? \"\" : \"off\");\n    field.setAttribute(\"spellcheck\", !!spellcheck);\n  }\n\n  function hiddenTextarea() {\n    var te = elt(\"textarea\", null, null, \"position: absolute; bottom: -1em; padding: 0; width: 1px; height: 1em; min-height: 1em; outline: none\");\n    var div = elt(\"div\", [te], null, \"overflow: hidden; position: relative; width: 3px; height: 0px;\");\n    // The textarea is kept positioned near the cursor to prevent the\n    // fact that it'll be scrolled into view on input from scrolling\n    // our fake cursor out of view. On webkit, when wrap=off, paste is\n    // very slow. So make the area wide instead.\n    if (webkit) { te.style.width = \"1000px\"; }\n    else { te.setAttribute(\"wrap\", \"off\"); }\n    // If border: 0; -- iOS fails to open keyboard (issue #1287)\n    if (ios) { te.style.border = \"1px solid black\"; }\n    disableBrowserMagic(te);\n    return div\n  }\n\n  // The publicly visible API. Note that methodOp(f) means\n  // 'wrap f in an operation, performed on its `this` parameter'.\n\n  // This is not the complete set of editor methods. Most of the\n  // methods defined on the Doc type are also injected into\n  // CodeMirror.prototype, for backwards compatibility and\n  // convenience.\n\n  function addEditorMethods(CodeMirror) {\n    var optionHandlers = CodeMirror.optionHandlers;\n\n    var helpers = CodeMirror.helpers = {};\n\n    CodeMirror.prototype = {\n      constructor: CodeMirror,\n      focus: function(){window.focus(); this.display.input.focus();},\n\n      setOption: function(option, value) {\n        var options = this.options, old = options[option];\n        if (options[option] == value && option != \"mode\") { return }\n        options[option] = value;\n        if (optionHandlers.hasOwnProperty(option))\n          { operation(this, optionHandlers[option])(this, value, old); }\n        signal(this, \"optionChange\", this, option);\n      },\n\n      getOption: function(option) {return this.options[option]},\n      getDoc: function() {return this.doc},\n\n      addKeyMap: function(map, bottom) {\n        this.state.keyMaps[bottom ? \"push\" : \"unshift\"](getKeyMap(map));\n      },\n      removeKeyMap: function(map) {\n        var maps = this.state.keyMaps;\n        for (var i = 0; i < maps.length; ++i)\n          { if (maps[i] == map || maps[i].name == map) {\n            maps.splice(i, 1);\n            return true\n          } }\n      },\n\n      addOverlay: methodOp(function(spec, options) {\n        var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);\n        if (mode.startState) { throw new Error(\"Overlays may not be stateful.\") }\n        insertSorted(this.state.overlays,\n                     {mode: mode, modeSpec: spec, opaque: options && options.opaque,\n                      priority: (options && options.priority) || 0},\n                     function (overlay) { return overlay.priority; });\n        this.state.modeGen++;\n        regChange(this);\n      }),\n      removeOverlay: methodOp(function(spec) {\n        var overlays = this.state.overlays;\n        for (var i = 0; i < overlays.length; ++i) {\n          var cur = overlays[i].modeSpec;\n          if (cur == spec || typeof spec == \"string\" && cur.name == spec) {\n            overlays.splice(i, 1);\n            this.state.modeGen++;\n            regChange(this);\n            return\n          }\n        }\n      }),\n\n      indentLine: methodOp(function(n, dir, aggressive) {\n        if (typeof dir != \"string\" && typeof dir != \"number\") {\n          if (dir == null) { dir = this.options.smartIndent ? \"smart\" : \"prev\"; }\n          else { dir = dir ? \"add\" : \"subtract\"; }\n        }\n        if (isLine(this.doc, n)) { indentLine(this, n, dir, aggressive); }\n      }),\n      indentSelection: methodOp(function(how) {\n        var ranges = this.doc.sel.ranges, end = -1;\n        for (var i = 0; i < ranges.length; i++) {\n          var range = ranges[i];\n          if (!range.empty()) {\n            var from = range.from(), to = range.to();\n            var start = Math.max(end, from.line);\n            end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;\n            for (var j = start; j < end; ++j)\n              { indentLine(this, j, how); }\n            var newRanges = this.doc.sel.ranges;\n            if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)\n              { replaceOneSelection(this.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll); }\n          } else if (range.head.line > end) {\n            indentLine(this, range.head.line, how, true);\n            end = range.head.line;\n            if (i == this.doc.sel.primIndex) { ensureCursorVisible(this); }\n          }\n        }\n      }),\n\n      // Fetch the parser token for a given character. Useful for hacks\n      // that want to inspect the mode state (say, for completion).\n      getTokenAt: function(pos, precise) {\n        return takeToken(this, pos, precise)\n      },\n\n      getLineTokens: function(line, precise) {\n        return takeToken(this, Pos(line), precise, true)\n      },\n\n      getTokenTypeAt: function(pos) {\n        pos = clipPos(this.doc, pos);\n        var styles = getLineStyles(this, getLine(this.doc, pos.line));\n        var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;\n        var type;\n        if (ch == 0) { type = styles[2]; }\n        else { for (;;) {\n          var mid = (before + after) >> 1;\n          if ((mid ? styles[mid * 2 - 1] : 0) >= ch) { after = mid; }\n          else if (styles[mid * 2 + 1] < ch) { before = mid + 1; }\n          else { type = styles[mid * 2 + 2]; break }\n        } }\n        var cut = type ? type.indexOf(\"overlay \") : -1;\n        return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1)\n      },\n\n      getModeAt: function(pos) {\n        var mode = this.doc.mode;\n        if (!mode.innerMode) { return mode }\n        return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode\n      },\n\n      getHelper: function(pos, type) {\n        return this.getHelpers(pos, type)[0]\n      },\n\n      getHelpers: function(pos, type) {\n        var found = [];\n        if (!helpers.hasOwnProperty(type)) { return found }\n        var help = helpers[type], mode = this.getModeAt(pos);\n        if (typeof mode[type] == \"string\") {\n          if (help[mode[type]]) { found.push(help[mode[type]]); }\n        } else if (mode[type]) {\n          for (var i = 0; i < mode[type].length; i++) {\n            var val = help[mode[type][i]];\n            if (val) { found.push(val); }\n          }\n        } else if (mode.helperType && help[mode.helperType]) {\n          found.push(help[mode.helperType]);\n        } else if (help[mode.name]) {\n          found.push(help[mode.name]);\n        }\n        for (var i$1 = 0; i$1 < help._global.length; i$1++) {\n          var cur = help._global[i$1];\n          if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)\n            { found.push(cur.val); }\n        }\n        return found\n      },\n\n      getStateAfter: function(line, precise) {\n        var doc = this.doc;\n        line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);\n        return getContextBefore(this, line + 1, precise).state\n      },\n\n      cursorCoords: function(start, mode) {\n        var pos, range = this.doc.sel.primary();\n        if (start == null) { pos = range.head; }\n        else if (typeof start == \"object\") { pos = clipPos(this.doc, start); }\n        else { pos = start ? range.from() : range.to(); }\n        return cursorCoords(this, pos, mode || \"page\")\n      },\n\n      charCoords: function(pos, mode) {\n        return charCoords(this, clipPos(this.doc, pos), mode || \"page\")\n      },\n\n      coordsChar: function(coords, mode) {\n        coords = fromCoordSystem(this, coords, mode || \"page\");\n        return coordsChar(this, coords.left, coords.top)\n      },\n\n      lineAtHeight: function(height, mode) {\n        height = fromCoordSystem(this, {top: height, left: 0}, mode || \"page\").top;\n        return lineAtHeight(this.doc, height + this.display.viewOffset)\n      },\n      heightAtLine: function(line, mode, includeWidgets) {\n        var end = false, lineObj;\n        if (typeof line == \"number\") {\n          var last = this.doc.first + this.doc.size - 1;\n          if (line < this.doc.first) { line = this.doc.first; }\n          else if (line > last) { line = last; end = true; }\n          lineObj = getLine(this.doc, line);\n        } else {\n          lineObj = line;\n        }\n        return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || \"page\", includeWidgets || end).top +\n          (end ? this.doc.height - heightAtLine(lineObj) : 0)\n      },\n\n      defaultTextHeight: function() { return textHeight(this.display) },\n      defaultCharWidth: function() { return charWidth(this.display) },\n\n      getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo}},\n\n      addWidget: function(pos, node, scroll, vert, horiz) {\n        var display = this.display;\n        pos = cursorCoords(this, clipPos(this.doc, pos));\n        var top = pos.bottom, left = pos.left;\n        node.style.position = \"absolute\";\n        node.setAttribute(\"cm-ignore-events\", \"true\");\n        this.display.input.setUneditable(node);\n        display.sizer.appendChild(node);\n        if (vert == \"over\") {\n          top = pos.top;\n        } else if (vert == \"above\" || vert == \"near\") {\n          var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),\n          hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);\n          // Default to positioning above (if specified and possible); otherwise default to positioning below\n          if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)\n            { top = pos.top - node.offsetHeight; }\n          else if (pos.bottom + node.offsetHeight <= vspace)\n            { top = pos.bottom; }\n          if (left + node.offsetWidth > hspace)\n            { left = hspace - node.offsetWidth; }\n        }\n        node.style.top = top + \"px\";\n        node.style.left = node.style.right = \"\";\n        if (horiz == \"right\") {\n          left = display.sizer.clientWidth - node.offsetWidth;\n          node.style.right = \"0px\";\n        } else {\n          if (horiz == \"left\") { left = 0; }\n          else if (horiz == \"middle\") { left = (display.sizer.clientWidth - node.offsetWidth) / 2; }\n          node.style.left = left + \"px\";\n        }\n        if (scroll)\n          { scrollIntoView(this, {left: left, top: top, right: left + node.offsetWidth, bottom: top + node.offsetHeight}); }\n      },\n\n      triggerOnKeyDown: methodOp(onKeyDown),\n      triggerOnKeyPress: methodOp(onKeyPress),\n      triggerOnKeyUp: onKeyUp,\n      triggerOnMouseDown: methodOp(onMouseDown),\n\n      execCommand: function(cmd) {\n        if (commands.hasOwnProperty(cmd))\n          { return commands[cmd].call(null, this) }\n      },\n\n      triggerElectric: methodOp(function(text) { triggerElectric(this, text); }),\n\n      findPosH: function(from, amount, unit, visually) {\n        var dir = 1;\n        if (amount < 0) { dir = -1; amount = -amount; }\n        var cur = clipPos(this.doc, from);\n        for (var i = 0; i < amount; ++i) {\n          cur = findPosH(this.doc, cur, dir, unit, visually);\n          if (cur.hitSide) { break }\n        }\n        return cur\n      },\n\n      moveH: methodOp(function(dir, unit) {\n        var this$1 = this;\n\n        this.extendSelectionsBy(function (range) {\n          if (this$1.display.shift || this$1.doc.extend || range.empty())\n            { return findPosH(this$1.doc, range.head, dir, unit, this$1.options.rtlMoveVisually) }\n          else\n            { return dir < 0 ? range.from() : range.to() }\n        }, sel_move);\n      }),\n\n      deleteH: methodOp(function(dir, unit) {\n        var sel = this.doc.sel, doc = this.doc;\n        if (sel.somethingSelected())\n          { doc.replaceSelection(\"\", null, \"+delete\"); }\n        else\n          { deleteNearSelection(this, function (range) {\n            var other = findPosH(doc, range.head, dir, unit, false);\n            return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other}\n          }); }\n      }),\n\n      findPosV: function(from, amount, unit, goalColumn) {\n        var dir = 1, x = goalColumn;\n        if (amount < 0) { dir = -1; amount = -amount; }\n        var cur = clipPos(this.doc, from);\n        for (var i = 0; i < amount; ++i) {\n          var coords = cursorCoords(this, cur, \"div\");\n          if (x == null) { x = coords.left; }\n          else { coords.left = x; }\n          cur = findPosV(this, coords, dir, unit);\n          if (cur.hitSide) { break }\n        }\n        return cur\n      },\n\n      moveV: methodOp(function(dir, unit) {\n        var this$1 = this;\n\n        var doc = this.doc, goals = [];\n        var collapse = !this.display.shift && !doc.extend && doc.sel.somethingSelected();\n        doc.extendSelectionsBy(function (range) {\n          if (collapse)\n            { return dir < 0 ? range.from() : range.to() }\n          var headPos = cursorCoords(this$1, range.head, \"div\");\n          if (range.goalColumn != null) { headPos.left = range.goalColumn; }\n          goals.push(headPos.left);\n          var pos = findPosV(this$1, headPos, dir, unit);\n          if (unit == \"page\" && range == doc.sel.primary())\n            { addToScrollTop(this$1, charCoords(this$1, pos, \"div\").top - headPos.top); }\n          return pos\n        }, sel_move);\n        if (goals.length) { for (var i = 0; i < doc.sel.ranges.length; i++)\n          { doc.sel.ranges[i].goalColumn = goals[i]; } }\n      }),\n\n      // Find the word at the given position (as returned by coordsChar).\n      findWordAt: function(pos) {\n        var doc = this.doc, line = getLine(doc, pos.line).text;\n        var start = pos.ch, end = pos.ch;\n        if (line) {\n          var helper = this.getHelper(pos, \"wordChars\");\n          if ((pos.sticky == \"before\" || end == line.length) && start) { --start; } else { ++end; }\n          var startChar = line.charAt(start);\n          var check = isWordChar(startChar, helper)\n            ? function (ch) { return isWordChar(ch, helper); }\n            : /\\s/.test(startChar) ? function (ch) { return /\\s/.test(ch); }\n            : function (ch) { return (!/\\s/.test(ch) && !isWordChar(ch)); };\n          while (start > 0 && check(line.charAt(start - 1))) { --start; }\n          while (end < line.length && check(line.charAt(end))) { ++end; }\n        }\n        return new Range(Pos(pos.line, start), Pos(pos.line, end))\n      },\n\n      toggleOverwrite: function(value) {\n        if (value != null && value == this.state.overwrite) { return }\n        if (this.state.overwrite = !this.state.overwrite)\n          { addClass(this.display.cursorDiv, \"CodeMirror-overwrite\"); }\n        else\n          { rmClass(this.display.cursorDiv, \"CodeMirror-overwrite\"); }\n\n        signal(this, \"overwriteToggle\", this, this.state.overwrite);\n      },\n      hasFocus: function() { return this.display.input.getField() == activeElt() },\n      isReadOnly: function() { return !!(this.options.readOnly || this.doc.cantEdit) },\n\n      scrollTo: methodOp(function (x, y) { scrollToCoords(this, x, y); }),\n      getScrollInfo: function() {\n        var scroller = this.display.scroller;\n        return {left: scroller.scrollLeft, top: scroller.scrollTop,\n                height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight,\n                width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth,\n                clientHeight: displayHeight(this), clientWidth: displayWidth(this)}\n      },\n\n      scrollIntoView: methodOp(function(range, margin) {\n        if (range == null) {\n          range = {from: this.doc.sel.primary().head, to: null};\n          if (margin == null) { margin = this.options.cursorScrollMargin; }\n        } else if (typeof range == \"number\") {\n          range = {from: Pos(range, 0), to: null};\n        } else if (range.from == null) {\n          range = {from: range, to: null};\n        }\n        if (!range.to) { range.to = range.from; }\n        range.margin = margin || 0;\n\n        if (range.from.line != null) {\n          scrollToRange(this, range);\n        } else {\n          scrollToCoordsRange(this, range.from, range.to, range.margin);\n        }\n      }),\n\n      setSize: methodOp(function(width, height) {\n        var this$1 = this;\n\n        var interpret = function (val) { return typeof val == \"number\" || /^\\d+$/.test(String(val)) ? val + \"px\" : val; };\n        if (width != null) { this.display.wrapper.style.width = interpret(width); }\n        if (height != null) { this.display.wrapper.style.height = interpret(height); }\n        if (this.options.lineWrapping) { clearLineMeasurementCache(this); }\n        var lineNo = this.display.viewFrom;\n        this.doc.iter(lineNo, this.display.viewTo, function (line) {\n          if (line.widgets) { for (var i = 0; i < line.widgets.length; i++)\n            { if (line.widgets[i].noHScroll) { regLineChange(this$1, lineNo, \"widget\"); break } } }\n          ++lineNo;\n        });\n        this.curOp.forceUpdate = true;\n        signal(this, \"refresh\", this);\n      }),\n\n      operation: function(f){return runInOp(this, f)},\n      startOperation: function(){return startOperation(this)},\n      endOperation: function(){return endOperation(this)},\n\n      refresh: methodOp(function() {\n        var oldHeight = this.display.cachedTextHeight;\n        regChange(this);\n        this.curOp.forceUpdate = true;\n        clearCaches(this);\n        scrollToCoords(this, this.doc.scrollLeft, this.doc.scrollTop);\n        updateGutterSpace(this.display);\n        if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5 || this.options.lineWrapping)\n          { estimateLineHeights(this); }\n        signal(this, \"refresh\", this);\n      }),\n\n      swapDoc: methodOp(function(doc) {\n        var old = this.doc;\n        old.cm = null;\n        // Cancel the current text selection if any (#5821)\n        if (this.state.selectingText) { this.state.selectingText(); }\n        attachDoc(this, doc);\n        clearCaches(this);\n        this.display.input.reset();\n        scrollToCoords(this, doc.scrollLeft, doc.scrollTop);\n        this.curOp.forceScroll = true;\n        signalLater(this, \"swapDoc\", this, old);\n        return old\n      }),\n\n      phrase: function(phraseText) {\n        var phrases = this.options.phrases;\n        return phrases && Object.prototype.hasOwnProperty.call(phrases, phraseText) ? phrases[phraseText] : phraseText\n      },\n\n      getInputField: function(){return this.display.input.getField()},\n      getWrapperElement: function(){return this.display.wrapper},\n      getScrollerElement: function(){return this.display.scroller},\n      getGutterElement: function(){return this.display.gutters}\n    };\n    eventMixin(CodeMirror);\n\n    CodeMirror.registerHelper = function(type, name, value) {\n      if (!helpers.hasOwnProperty(type)) { helpers[type] = CodeMirror[type] = {_global: []}; }\n      helpers[type][name] = value;\n    };\n    CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {\n      CodeMirror.registerHelper(type, name, value);\n      helpers[type]._global.push({pred: predicate, val: value});\n    };\n  }\n\n  // Used for horizontal relative motion. Dir is -1 or 1 (left or\n  // right), unit can be \"codepoint\", \"char\", \"column\" (like char, but\n  // doesn't cross line boundaries), \"word\" (across next word), or\n  // \"group\" (to the start of next group of word or\n  // non-word-non-whitespace chars). The visually param controls\n  // whether, in right-to-left text, direction 1 means to move towards\n  // the next index in the string, or towards the character to the right\n  // of the current position. The resulting position will have a\n  // hitSide=true property if it reached the end of the document.\n  function findPosH(doc, pos, dir, unit, visually) {\n    var oldPos = pos;\n    var origDir = dir;\n    var lineObj = getLine(doc, pos.line);\n    var lineDir = visually && doc.direction == \"rtl\" ? -dir : dir;\n    function findNextLine() {\n      var l = pos.line + lineDir;\n      if (l < doc.first || l >= doc.first + doc.size) { return false }\n      pos = new Pos(l, pos.ch, pos.sticky);\n      return lineObj = getLine(doc, l)\n    }\n    function moveOnce(boundToLine) {\n      var next;\n      if (unit == \"codepoint\") {\n        var ch = lineObj.text.charCodeAt(pos.ch + (dir > 0 ? 0 : -1));\n        if (isNaN(ch)) {\n          next = null;\n        } else {\n          var astral = dir > 0 ? ch >= 0xD800 && ch < 0xDC00 : ch >= 0xDC00 && ch < 0xDFFF;\n          next = new Pos(pos.line, Math.max(0, Math.min(lineObj.text.length, pos.ch + dir * (astral ? 2 : 1))), -dir);\n        }\n      } else if (visually) {\n        next = moveVisually(doc.cm, lineObj, pos, dir);\n      } else {\n        next = moveLogically(lineObj, pos, dir);\n      }\n      if (next == null) {\n        if (!boundToLine && findNextLine())\n          { pos = endOfLine(visually, doc.cm, lineObj, pos.line, lineDir); }\n        else\n          { return false }\n      } else {\n        pos = next;\n      }\n      return true\n    }\n\n    if (unit == \"char\" || unit == \"codepoint\") {\n      moveOnce();\n    } else if (unit == \"column\") {\n      moveOnce(true);\n    } else if (unit == \"word\" || unit == \"group\") {\n      var sawType = null, group = unit == \"group\";\n      var helper = doc.cm && doc.cm.getHelper(pos, \"wordChars\");\n      for (var first = true;; first = false) {\n        if (dir < 0 && !moveOnce(!first)) { break }\n        var cur = lineObj.text.charAt(pos.ch) || \"\\n\";\n        var type = isWordChar(cur, helper) ? \"w\"\n          : group && cur == \"\\n\" ? \"n\"\n          : !group || /\\s/.test(cur) ? null\n          : \"p\";\n        if (group && !first && !type) { type = \"s\"; }\n        if (sawType && sawType != type) {\n          if (dir < 0) {dir = 1; moveOnce(); pos.sticky = \"after\";}\n          break\n        }\n\n        if (type) { sawType = type; }\n        if (dir > 0 && !moveOnce(!first)) { break }\n      }\n    }\n    var result = skipAtomic(doc, pos, oldPos, origDir, true);\n    if (equalCursorPos(oldPos, result)) { result.hitSide = true; }\n    return result\n  }\n\n  // For relative vertical movement. Dir may be -1 or 1. Unit can be\n  // \"page\" or \"line\". The resulting position will have a hitSide=true\n  // property if it reached the end of the document.\n  function findPosV(cm, pos, dir, unit) {\n    var doc = cm.doc, x = pos.left, y;\n    if (unit == \"page\") {\n      var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);\n      var moveAmount = Math.max(pageSize - .5 * textHeight(cm.display), 3);\n      y = (dir > 0 ? pos.bottom : pos.top) + dir * moveAmount;\n\n    } else if (unit == \"line\") {\n      y = dir > 0 ? pos.bottom + 3 : pos.top - 3;\n    }\n    var target;\n    for (;;) {\n      target = coordsChar(cm, x, y);\n      if (!target.outside) { break }\n      if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break }\n      y += dir * 5;\n    }\n    return target\n  }\n\n  // CONTENTEDITABLE INPUT STYLE\n\n  var ContentEditableInput = function(cm) {\n    this.cm = cm;\n    this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null;\n    this.polling = new Delayed();\n    this.composing = null;\n    this.gracePeriod = false;\n    this.readDOMTimeout = null;\n  };\n\n  ContentEditableInput.prototype.init = function (display) {\n      var this$1 = this;\n\n    var input = this, cm = input.cm;\n    var div = input.div = display.lineDiv;\n    div.contentEditable = true;\n    disableBrowserMagic(div, cm.options.spellcheck, cm.options.autocorrect, cm.options.autocapitalize);\n\n    function belongsToInput(e) {\n      for (var t = e.target; t; t = t.parentNode) {\n        if (t == div) { return true }\n        if (/\\bCodeMirror-(?:line)?widget\\b/.test(t.className)) { break }\n      }\n      return false\n    }\n\n    on(div, \"paste\", function (e) {\n      if (!belongsToInput(e) || signalDOMEvent(cm, e) || handlePaste(e, cm)) { return }\n      // IE doesn't fire input events, so we schedule a read for the pasted content in this way\n      if (ie_version <= 11) { setTimeout(operation(cm, function () { return this$1.updateFromDOM(); }), 20); }\n    });\n\n    on(div, \"compositionstart\", function (e) {\n      this$1.composing = {data: e.data, done: false};\n    });\n    on(div, \"compositionupdate\", function (e) {\n      if (!this$1.composing) { this$1.composing = {data: e.data, done: false}; }\n    });\n    on(div, \"compositionend\", function (e) {\n      if (this$1.composing) {\n        if (e.data != this$1.composing.data) { this$1.readFromDOMSoon(); }\n        this$1.composing.done = true;\n      }\n    });\n\n    on(div, \"touchstart\", function () { return input.forceCompositionEnd(); });\n\n    on(div, \"input\", function () {\n      if (!this$1.composing) { this$1.readFromDOMSoon(); }\n    });\n\n    function onCopyCut(e) {\n      if (!belongsToInput(e) || signalDOMEvent(cm, e)) { return }\n      if (cm.somethingSelected()) {\n        setLastCopied({lineWise: false, text: cm.getSelections()});\n        if (e.type == \"cut\") { cm.replaceSelection(\"\", null, \"cut\"); }\n      } else if (!cm.options.lineWiseCopyCut) {\n        return\n      } else {\n        var ranges = copyableRanges(cm);\n        setLastCopied({lineWise: true, text: ranges.text});\n        if (e.type == \"cut\") {\n          cm.operation(function () {\n            cm.setSelections(ranges.ranges, 0, sel_dontScroll);\n            cm.replaceSelection(\"\", null, \"cut\");\n          });\n        }\n      }\n      if (e.clipboardData) {\n        e.clipboardData.clearData();\n        var content = lastCopied.text.join(\"\\n\");\n        // iOS exposes the clipboard API, but seems to discard content inserted into it\n        e.clipboardData.setData(\"Text\", content);\n        if (e.clipboardData.getData(\"Text\") == content) {\n          e.preventDefault();\n          return\n        }\n      }\n      // Old-fashioned briefly-focus-a-textarea hack\n      var kludge = hiddenTextarea(), te = kludge.firstChild;\n      cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild);\n      te.value = lastCopied.text.join(\"\\n\");\n      var hadFocus = activeElt();\n      selectInput(te);\n      setTimeout(function () {\n        cm.display.lineSpace.removeChild(kludge);\n        hadFocus.focus();\n        if (hadFocus == div) { input.showPrimarySelection(); }\n      }, 50);\n    }\n    on(div, \"copy\", onCopyCut);\n    on(div, \"cut\", onCopyCut);\n  };\n\n  ContentEditableInput.prototype.screenReaderLabelChanged = function (label) {\n    // Label for screenreaders, accessibility\n    if(label) {\n      this.div.setAttribute('aria-label', label);\n    } else {\n      this.div.removeAttribute('aria-label');\n    }\n  };\n\n  ContentEditableInput.prototype.prepareSelection = function () {\n    var result = prepareSelection(this.cm, false);\n    result.focus = activeElt() == this.div;\n    return result\n  };\n\n  ContentEditableInput.prototype.showSelection = function (info, takeFocus) {\n    if (!info || !this.cm.display.view.length) { return }\n    if (info.focus || takeFocus) { this.showPrimarySelection(); }\n    this.showMultipleSelections(info);\n  };\n\n  ContentEditableInput.prototype.getSelection = function () {\n    return this.cm.display.wrapper.ownerDocument.getSelection()\n  };\n\n  ContentEditableInput.prototype.showPrimarySelection = function () {\n    var sel = this.getSelection(), cm = this.cm, prim = cm.doc.sel.primary();\n    var from = prim.from(), to = prim.to();\n\n    if (cm.display.viewTo == cm.display.viewFrom || from.line >= cm.display.viewTo || to.line < cm.display.viewFrom) {\n      sel.removeAllRanges();\n      return\n    }\n\n    var curAnchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);\n    var curFocus = domToPos(cm, sel.focusNode, sel.focusOffset);\n    if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&\n        cmp(minPos(curAnchor, curFocus), from) == 0 &&\n        cmp(maxPos(curAnchor, curFocus), to) == 0)\n      { return }\n\n    var view = cm.display.view;\n    var start = (from.line >= cm.display.viewFrom && posToDOM(cm, from)) ||\n        {node: view[0].measure.map[2], offset: 0};\n    var end = to.line < cm.display.viewTo && posToDOM(cm, to);\n    if (!end) {\n      var measure = view[view.length - 1].measure;\n      var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map;\n      end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]};\n    }\n\n    if (!start || !end) {\n      sel.removeAllRanges();\n      return\n    }\n\n    var old = sel.rangeCount && sel.getRangeAt(0), rng;\n    try { rng = range(start.node, start.offset, end.offset, end.node); }\n    catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible\n    if (rng) {\n      if (!gecko && cm.state.focused) {\n        sel.collapse(start.node, start.offset);\n        if (!rng.collapsed) {\n          sel.removeAllRanges();\n          sel.addRange(rng);\n        }\n      } else {\n        sel.removeAllRanges();\n        sel.addRange(rng);\n      }\n      if (old && sel.anchorNode == null) { sel.addRange(old); }\n      else if (gecko) { this.startGracePeriod(); }\n    }\n    this.rememberSelection();\n  };\n\n  ContentEditableInput.prototype.startGracePeriod = function () {\n      var this$1 = this;\n\n    clearTimeout(this.gracePeriod);\n    this.gracePeriod = setTimeout(function () {\n      this$1.gracePeriod = false;\n      if (this$1.selectionChanged())\n        { this$1.cm.operation(function () { return this$1.cm.curOp.selectionChanged = true; }); }\n    }, 20);\n  };\n\n  ContentEditableInput.prototype.showMultipleSelections = function (info) {\n    removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors);\n    removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection);\n  };\n\n  ContentEditableInput.prototype.rememberSelection = function () {\n    var sel = this.getSelection();\n    this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset;\n    this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset;\n  };\n\n  ContentEditableInput.prototype.selectionInEditor = function () {\n    var sel = this.getSelection();\n    if (!sel.rangeCount) { return false }\n    var node = sel.getRangeAt(0).commonAncestorContainer;\n    return contains(this.div, node)\n  };\n\n  ContentEditableInput.prototype.focus = function () {\n    if (this.cm.options.readOnly != \"nocursor\") {\n      if (!this.selectionInEditor() || activeElt() != this.div)\n        { this.showSelection(this.prepareSelection(), true); }\n      this.div.focus();\n    }\n  };\n  ContentEditableInput.prototype.blur = function () { this.div.blur(); };\n  ContentEditableInput.prototype.getField = function () { return this.div };\n\n  ContentEditableInput.prototype.supportsTouch = function () { return true };\n\n  ContentEditableInput.prototype.receivedFocus = function () {\n      var this$1 = this;\n\n    var input = this;\n    if (this.selectionInEditor())\n      { setTimeout(function () { return this$1.pollSelection(); }, 20); }\n    else\n      { runInOp(this.cm, function () { return input.cm.curOp.selectionChanged = true; }); }\n\n    function poll() {\n      if (input.cm.state.focused) {\n        input.pollSelection();\n        input.polling.set(input.cm.options.pollInterval, poll);\n      }\n    }\n    this.polling.set(this.cm.options.pollInterval, poll);\n  };\n\n  ContentEditableInput.prototype.selectionChanged = function () {\n    var sel = this.getSelection();\n    return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset ||\n      sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset\n  };\n\n  ContentEditableInput.prototype.pollSelection = function () {\n    if (this.readDOMTimeout != null || this.gracePeriod || !this.selectionChanged()) { return }\n    var sel = this.getSelection(), cm = this.cm;\n    // On Android Chrome (version 56, at least), backspacing into an\n    // uneditable block element will put the cursor in that element,\n    // and then, because it's not editable, hide the virtual keyboard.\n    // Because Android doesn't allow us to actually detect backspace\n    // presses in a sane way, this code checks for when that happens\n    // and simulates a backspace press in this case.\n    if (android && chrome && this.cm.display.gutterSpecs.length && isInGutter(sel.anchorNode)) {\n      this.cm.triggerOnKeyDown({type: \"keydown\", keyCode: 8, preventDefault: Math.abs});\n      this.blur();\n      this.focus();\n      return\n    }\n    if (this.composing) { return }\n    this.rememberSelection();\n    var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);\n    var head = domToPos(cm, sel.focusNode, sel.focusOffset);\n    if (anchor && head) { runInOp(cm, function () {\n      setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll);\n      if (anchor.bad || head.bad) { cm.curOp.selectionChanged = true; }\n    }); }\n  };\n\n  ContentEditableInput.prototype.pollContent = function () {\n    if (this.readDOMTimeout != null) {\n      clearTimeout(this.readDOMTimeout);\n      this.readDOMTimeout = null;\n    }\n\n    var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary();\n    var from = sel.from(), to = sel.to();\n    if (from.ch == 0 && from.line > cm.firstLine())\n      { from = Pos(from.line - 1, getLine(cm.doc, from.line - 1).length); }\n    if (to.ch == getLine(cm.doc, to.line).text.length && to.line < cm.lastLine())\n      { to = Pos(to.line + 1, 0); }\n    if (from.line < display.viewFrom || to.line > display.viewTo - 1) { return false }\n\n    var fromIndex, fromLine, fromNode;\n    if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) {\n      fromLine = lineNo(display.view[0].line);\n      fromNode = display.view[0].node;\n    } else {\n      fromLine = lineNo(display.view[fromIndex].line);\n      fromNode = display.view[fromIndex - 1].node.nextSibling;\n    }\n    var toIndex = findViewIndex(cm, to.line);\n    var toLine, toNode;\n    if (toIndex == display.view.length - 1) {\n      toLine = display.viewTo - 1;\n      toNode = display.lineDiv.lastChild;\n    } else {\n      toLine = lineNo(display.view[toIndex + 1].line) - 1;\n      toNode = display.view[toIndex + 1].node.previousSibling;\n    }\n\n    if (!fromNode) { return false }\n    var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine));\n    var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length));\n    while (newText.length > 1 && oldText.length > 1) {\n      if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine--; }\n      else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++; }\n      else { break }\n    }\n\n    var cutFront = 0, cutEnd = 0;\n    var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length);\n    while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront))\n      { ++cutFront; }\n    var newBot = lst(newText), oldBot = lst(oldText);\n    var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0),\n                             oldBot.length - (oldText.length == 1 ? cutFront : 0));\n    while (cutEnd < maxCutEnd &&\n           newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1))\n      { ++cutEnd; }\n    // Try to move start of change to start of selection if ambiguous\n    if (newText.length == 1 && oldText.length == 1 && fromLine == from.line) {\n      while (cutFront && cutFront > from.ch &&\n             newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) {\n        cutFront--;\n        cutEnd++;\n      }\n    }\n\n    newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd).replace(/^\\u200b+/, \"\");\n    newText[0] = newText[0].slice(cutFront).replace(/\\u200b+$/, \"\");\n\n    var chFrom = Pos(fromLine, cutFront);\n    var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0);\n    if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) {\n      replaceRange(cm.doc, newText, chFrom, chTo, \"+input\");\n      return true\n    }\n  };\n\n  ContentEditableInput.prototype.ensurePolled = function () {\n    this.forceCompositionEnd();\n  };\n  ContentEditableInput.prototype.reset = function () {\n    this.forceCompositionEnd();\n  };\n  ContentEditableInput.prototype.forceCompositionEnd = function () {\n    if (!this.composing) { return }\n    clearTimeout(this.readDOMTimeout);\n    this.composing = null;\n    this.updateFromDOM();\n    this.div.blur();\n    this.div.focus();\n  };\n  ContentEditableInput.prototype.readFromDOMSoon = function () {\n      var this$1 = this;\n\n    if (this.readDOMTimeout != null) { return }\n    this.readDOMTimeout = setTimeout(function () {\n      this$1.readDOMTimeout = null;\n      if (this$1.composing) {\n        if (this$1.composing.done) { this$1.composing = null; }\n        else { return }\n      }\n      this$1.updateFromDOM();\n    }, 80);\n  };\n\n  ContentEditableInput.prototype.updateFromDOM = function () {\n      var this$1 = this;\n\n    if (this.cm.isReadOnly() || !this.pollContent())\n      { runInOp(this.cm, function () { return regChange(this$1.cm); }); }\n  };\n\n  ContentEditableInput.prototype.setUneditable = function (node) {\n    node.contentEditable = \"false\";\n  };\n\n  ContentEditableInput.prototype.onKeyPress = function (e) {\n    if (e.charCode == 0 || this.composing) { return }\n    e.preventDefault();\n    if (!this.cm.isReadOnly())\n      { operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0); }\n  };\n\n  ContentEditableInput.prototype.readOnlyChanged = function (val) {\n    this.div.contentEditable = String(val != \"nocursor\");\n  };\n\n  ContentEditableInput.prototype.onContextMenu = function () {};\n  ContentEditableInput.prototype.resetPosition = function () {};\n\n  ContentEditableInput.prototype.needsContentAttribute = true;\n\n  function posToDOM(cm, pos) {\n    var view = findViewForLine(cm, pos.line);\n    if (!view || view.hidden) { return null }\n    var line = getLine(cm.doc, pos.line);\n    var info = mapFromLineView(view, line, pos.line);\n\n    var order = getOrder(line, cm.doc.direction), side = \"left\";\n    if (order) {\n      var partPos = getBidiPartAt(order, pos.ch);\n      side = partPos % 2 ? \"right\" : \"left\";\n    }\n    var result = nodeAndOffsetInLineMap(info.map, pos.ch, side);\n    result.offset = result.collapse == \"right\" ? result.end : result.start;\n    return result\n  }\n\n  function isInGutter(node) {\n    for (var scan = node; scan; scan = scan.parentNode)\n      { if (/CodeMirror-gutter-wrapper/.test(scan.className)) { return true } }\n    return false\n  }\n\n  function badPos(pos, bad) { if (bad) { pos.bad = true; } return pos }\n\n  function domTextBetween(cm, from, to, fromLine, toLine) {\n    var text = \"\", closing = false, lineSep = cm.doc.lineSeparator(), extraLinebreak = false;\n    function recognizeMarker(id) { return function (marker) { return marker.id == id; } }\n    function close() {\n      if (closing) {\n        text += lineSep;\n        if (extraLinebreak) { text += lineSep; }\n        closing = extraLinebreak = false;\n      }\n    }\n    function addText(str) {\n      if (str) {\n        close();\n        text += str;\n      }\n    }\n    function walk(node) {\n      if (node.nodeType == 1) {\n        var cmText = node.getAttribute(\"cm-text\");\n        if (cmText) {\n          addText(cmText);\n          return\n        }\n        var markerID = node.getAttribute(\"cm-marker\"), range;\n        if (markerID) {\n          var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID));\n          if (found.length && (range = found[0].find(0)))\n            { addText(getBetween(cm.doc, range.from, range.to).join(lineSep)); }\n          return\n        }\n        if (node.getAttribute(\"contenteditable\") == \"false\") { return }\n        var isBlock = /^(pre|div|p|li|table|br)$/i.test(node.nodeName);\n        if (!/^br$/i.test(node.nodeName) && node.textContent.length == 0) { return }\n\n        if (isBlock) { close(); }\n        for (var i = 0; i < node.childNodes.length; i++)\n          { walk(node.childNodes[i]); }\n\n        if (/^(pre|p)$/i.test(node.nodeName)) { extraLinebreak = true; }\n        if (isBlock) { closing = true; }\n      } else if (node.nodeType == 3) {\n        addText(node.nodeValue.replace(/\\u200b/g, \"\").replace(/\\u00a0/g, \" \"));\n      }\n    }\n    for (;;) {\n      walk(from);\n      if (from == to) { break }\n      from = from.nextSibling;\n      extraLinebreak = false;\n    }\n    return text\n  }\n\n  function domToPos(cm, node, offset) {\n    var lineNode;\n    if (node == cm.display.lineDiv) {\n      lineNode = cm.display.lineDiv.childNodes[offset];\n      if (!lineNode) { return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true) }\n      node = null; offset = 0;\n    } else {\n      for (lineNode = node;; lineNode = lineNode.parentNode) {\n        if (!lineNode || lineNode == cm.display.lineDiv) { return null }\n        if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) { break }\n      }\n    }\n    for (var i = 0; i < cm.display.view.length; i++) {\n      var lineView = cm.display.view[i];\n      if (lineView.node == lineNode)\n        { return locateNodeInLineView(lineView, node, offset) }\n    }\n  }\n\n  function locateNodeInLineView(lineView, node, offset) {\n    var wrapper = lineView.text.firstChild, bad = false;\n    if (!node || !contains(wrapper, node)) { return badPos(Pos(lineNo(lineView.line), 0), true) }\n    if (node == wrapper) {\n      bad = true;\n      node = wrapper.childNodes[offset];\n      offset = 0;\n      if (!node) {\n        var line = lineView.rest ? lst(lineView.rest) : lineView.line;\n        return badPos(Pos(lineNo(line), line.text.length), bad)\n      }\n    }\n\n    var textNode = node.nodeType == 3 ? node : null, topNode = node;\n    if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) {\n      textNode = node.firstChild;\n      if (offset) { offset = textNode.nodeValue.length; }\n    }\n    while (topNode.parentNode != wrapper) { topNode = topNode.parentNode; }\n    var measure = lineView.measure, maps = measure.maps;\n\n    function find(textNode, topNode, offset) {\n      for (var i = -1; i < (maps ? maps.length : 0); i++) {\n        var map = i < 0 ? measure.map : maps[i];\n        for (var j = 0; j < map.length; j += 3) {\n          var curNode = map[j + 2];\n          if (curNode == textNode || curNode == topNode) {\n            var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]);\n            var ch = map[j] + offset;\n            if (offset < 0 || curNode != textNode) { ch = map[j + (offset ? 1 : 0)]; }\n            return Pos(line, ch)\n          }\n        }\n      }\n    }\n    var found = find(textNode, topNode, offset);\n    if (found) { return badPos(found, bad) }\n\n    // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems\n    for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) {\n      found = find(after, after.firstChild, 0);\n      if (found)\n        { return badPos(Pos(found.line, found.ch - dist), bad) }\n      else\n        { dist += after.textContent.length; }\n    }\n    for (var before = topNode.previousSibling, dist$1 = offset; before; before = before.previousSibling) {\n      found = find(before, before.firstChild, -1);\n      if (found)\n        { return badPos(Pos(found.line, found.ch + dist$1), bad) }\n      else\n        { dist$1 += before.textContent.length; }\n    }\n  }\n\n  // TEXTAREA INPUT STYLE\n\n  var TextareaInput = function(cm) {\n    this.cm = cm;\n    // See input.poll and input.reset\n    this.prevInput = \"\";\n\n    // Flag that indicates whether we expect input to appear real soon\n    // now (after some event like 'keypress' or 'input') and are\n    // polling intensively.\n    this.pollingFast = false;\n    // Self-resetting timeout for the poller\n    this.polling = new Delayed();\n    // Used to work around IE issue with selection being forgotten when focus moves away from textarea\n    this.hasSelection = false;\n    this.composing = null;\n  };\n\n  TextareaInput.prototype.init = function (display) {\n      var this$1 = this;\n\n    var input = this, cm = this.cm;\n    this.createField(display);\n    var te = this.textarea;\n\n    display.wrapper.insertBefore(this.wrapper, display.wrapper.firstChild);\n\n    // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore)\n    if (ios) { te.style.width = \"0px\"; }\n\n    on(te, \"input\", function () {\n      if (ie && ie_version >= 9 && this$1.hasSelection) { this$1.hasSelection = null; }\n      input.poll();\n    });\n\n    on(te, \"paste\", function (e) {\n      if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return }\n\n      cm.state.pasteIncoming = +new Date;\n      input.fastPoll();\n    });\n\n    function prepareCopyCut(e) {\n      if (signalDOMEvent(cm, e)) { return }\n      if (cm.somethingSelected()) {\n        setLastCopied({lineWise: false, text: cm.getSelections()});\n      } else if (!cm.options.lineWiseCopyCut) {\n        return\n      } else {\n        var ranges = copyableRanges(cm);\n        setLastCopied({lineWise: true, text: ranges.text});\n        if (e.type == \"cut\") {\n          cm.setSelections(ranges.ranges, null, sel_dontScroll);\n        } else {\n          input.prevInput = \"\";\n          te.value = ranges.text.join(\"\\n\");\n          selectInput(te);\n        }\n      }\n      if (e.type == \"cut\") { cm.state.cutIncoming = +new Date; }\n    }\n    on(te, \"cut\", prepareCopyCut);\n    on(te, \"copy\", prepareCopyCut);\n\n    on(display.scroller, \"paste\", function (e) {\n      if (eventInWidget(display, e) || signalDOMEvent(cm, e)) { return }\n      if (!te.dispatchEvent) {\n        cm.state.pasteIncoming = +new Date;\n        input.focus();\n        return\n      }\n\n      // Pass the `paste` event to the textarea so it's handled by its event listener.\n      var event = new Event(\"paste\");\n      event.clipboardData = e.clipboardData;\n      te.dispatchEvent(event);\n    });\n\n    // Prevent normal selection in the editor (we handle our own)\n    on(display.lineSpace, \"selectstart\", function (e) {\n      if (!eventInWidget(display, e)) { e_preventDefault(e); }\n    });\n\n    on(te, \"compositionstart\", function () {\n      var start = cm.getCursor(\"from\");\n      if (input.composing) { input.composing.range.clear(); }\n      input.composing = {\n        start: start,\n        range: cm.markText(start, cm.getCursor(\"to\"), {className: \"CodeMirror-composing\"})\n      };\n    });\n    on(te, \"compositionend\", function () {\n      if (input.composing) {\n        input.poll();\n        input.composing.range.clear();\n        input.composing = null;\n      }\n    });\n  };\n\n  TextareaInput.prototype.createField = function (_display) {\n    // Wraps and hides input textarea\n    this.wrapper = hiddenTextarea();\n    // The semihidden textarea that is focused when the editor is\n    // focused, and receives input.\n    this.textarea = this.wrapper.firstChild;\n  };\n\n  TextareaInput.prototype.screenReaderLabelChanged = function (label) {\n    // Label for screenreaders, accessibility\n    if(label) {\n      this.textarea.setAttribute('aria-label', label);\n    } else {\n      this.textarea.removeAttribute('aria-label');\n    }\n  };\n\n  TextareaInput.prototype.prepareSelection = function () {\n    // Redraw the selection and/or cursor\n    var cm = this.cm, display = cm.display, doc = cm.doc;\n    var result = prepareSelection(cm);\n\n    // Move the hidden textarea near the cursor to prevent scrolling artifacts\n    if (cm.options.moveInputWithCursor) {\n      var headPos = cursorCoords(cm, doc.sel.primary().head, \"div\");\n      var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();\n      result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10,\n                                          headPos.top + lineOff.top - wrapOff.top));\n      result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10,\n                                           headPos.left + lineOff.left - wrapOff.left));\n    }\n\n    return result\n  };\n\n  TextareaInput.prototype.showSelection = function (drawn) {\n    var cm = this.cm, display = cm.display;\n    removeChildrenAndAdd(display.cursorDiv, drawn.cursors);\n    removeChildrenAndAdd(display.selectionDiv, drawn.selection);\n    if (drawn.teTop != null) {\n      this.wrapper.style.top = drawn.teTop + \"px\";\n      this.wrapper.style.left = drawn.teLeft + \"px\";\n    }\n  };\n\n  // Reset the input to correspond to the selection (or to be empty,\n  // when not typing and nothing is selected)\n  TextareaInput.prototype.reset = function (typing) {\n    if (this.contextMenuPending || this.composing) { return }\n    var cm = this.cm;\n    if (cm.somethingSelected()) {\n      this.prevInput = \"\";\n      var content = cm.getSelection();\n      this.textarea.value = content;\n      if (cm.state.focused) { selectInput(this.textarea); }\n      if (ie && ie_version >= 9) { this.hasSelection = content; }\n    } else if (!typing) {\n      this.prevInput = this.textarea.value = \"\";\n      if (ie && ie_version >= 9) { this.hasSelection = null; }\n    }\n  };\n\n  TextareaInput.prototype.getField = function () { return this.textarea };\n\n  TextareaInput.prototype.supportsTouch = function () { return false };\n\n  TextareaInput.prototype.focus = function () {\n    if (this.cm.options.readOnly != \"nocursor\" && (!mobile || activeElt() != this.textarea)) {\n      try { this.textarea.focus(); }\n      catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM\n    }\n  };\n\n  TextareaInput.prototype.blur = function () { this.textarea.blur(); };\n\n  TextareaInput.prototype.resetPosition = function () {\n    this.wrapper.style.top = this.wrapper.style.left = 0;\n  };\n\n  TextareaInput.prototype.receivedFocus = function () { this.slowPoll(); };\n\n  // Poll for input changes, using the normal rate of polling. This\n  // runs as long as the editor is focused.\n  TextareaInput.prototype.slowPoll = function () {\n      var this$1 = this;\n\n    if (this.pollingFast) { return }\n    this.polling.set(this.cm.options.pollInterval, function () {\n      this$1.poll();\n      if (this$1.cm.state.focused) { this$1.slowPoll(); }\n    });\n  };\n\n  // When an event has just come in that is likely to add or change\n  // something in the input textarea, we poll faster, to ensure that\n  // the change appears on the screen quickly.\n  TextareaInput.prototype.fastPoll = function () {\n    var missed = false, input = this;\n    input.pollingFast = true;\n    function p() {\n      var changed = input.poll();\n      if (!changed && !missed) {missed = true; input.polling.set(60, p);}\n      else {input.pollingFast = false; input.slowPoll();}\n    }\n    input.polling.set(20, p);\n  };\n\n  // Read input from the textarea, and update the document to match.\n  // When something is selected, it is present in the textarea, and\n  // selected (unless it is huge, in which case a placeholder is\n  // used). When nothing is selected, the cursor sits after previously\n  // seen text (can be empty), which is stored in prevInput (we must\n  // not reset the textarea when typing, because that breaks IME).\n  TextareaInput.prototype.poll = function () {\n      var this$1 = this;\n\n    var cm = this.cm, input = this.textarea, prevInput = this.prevInput;\n    // Since this is called a *lot*, try to bail out as cheaply as\n    // possible when it is clear that nothing happened. hasSelection\n    // will be the case when there is a lot of text in the textarea,\n    // in which case reading its value would be expensive.\n    if (this.contextMenuPending || !cm.state.focused ||\n        (hasSelection(input) && !prevInput && !this.composing) ||\n        cm.isReadOnly() || cm.options.disableInput || cm.state.keySeq)\n      { return false }\n\n    var text = input.value;\n    // If nothing changed, bail.\n    if (text == prevInput && !cm.somethingSelected()) { return false }\n    // Work around nonsensical selection resetting in IE9/10, and\n    // inexplicable appearance of private area unicode characters on\n    // some key combos in Mac (#2689).\n    if (ie && ie_version >= 9 && this.hasSelection === text ||\n        mac && /[\\uf700-\\uf7ff]/.test(text)) {\n      cm.display.input.reset();\n      return false\n    }\n\n    if (cm.doc.sel == cm.display.selForContextMenu) {\n      var first = text.charCodeAt(0);\n      if (first == 0x200b && !prevInput) { prevInput = \"\\u200b\"; }\n      if (first == 0x21da) { this.reset(); return this.cm.execCommand(\"undo\") }\n    }\n    // Find the part of the input that is actually new\n    var same = 0, l = Math.min(prevInput.length, text.length);\n    while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) { ++same; }\n\n    runInOp(cm, function () {\n      applyTextInput(cm, text.slice(same), prevInput.length - same,\n                     null, this$1.composing ? \"*compose\" : null);\n\n      // Don't leave long text in the textarea, since it makes further polling slow\n      if (text.length > 1000 || text.indexOf(\"\\n\") > -1) { input.value = this$1.prevInput = \"\"; }\n      else { this$1.prevInput = text; }\n\n      if (this$1.composing) {\n        this$1.composing.range.clear();\n        this$1.composing.range = cm.markText(this$1.composing.start, cm.getCursor(\"to\"),\n                                           {className: \"CodeMirror-composing\"});\n      }\n    });\n    return true\n  };\n\n  TextareaInput.prototype.ensurePolled = function () {\n    if (this.pollingFast && this.poll()) { this.pollingFast = false; }\n  };\n\n  TextareaInput.prototype.onKeyPress = function () {\n    if (ie && ie_version >= 9) { this.hasSelection = null; }\n    this.fastPoll();\n  };\n\n  TextareaInput.prototype.onContextMenu = function (e) {\n    var input = this, cm = input.cm, display = cm.display, te = input.textarea;\n    if (input.contextMenuPending) { input.contextMenuPending(); }\n    var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;\n    if (!pos || presto) { return } // Opera is difficult.\n\n    // Reset the current text selection only if the click is done outside of the selection\n    // and 'resetSelectionOnContextMenu' option is true.\n    var reset = cm.options.resetSelectionOnContextMenu;\n    if (reset && cm.doc.sel.contains(pos) == -1)\n      { operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll); }\n\n    var oldCSS = te.style.cssText, oldWrapperCSS = input.wrapper.style.cssText;\n    var wrapperBox = input.wrapper.offsetParent.getBoundingClientRect();\n    input.wrapper.style.cssText = \"position: static\";\n    te.style.cssText = \"position: absolute; width: 30px; height: 30px;\\n      top: \" + (e.clientY - wrapperBox.top - 5) + \"px; left: \" + (e.clientX - wrapperBox.left - 5) + \"px;\\n      z-index: 1000; background: \" + (ie ? \"rgba(255, 255, 255, .05)\" : \"transparent\") + \";\\n      outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);\";\n    var oldScrollY;\n    if (webkit) { oldScrollY = window.scrollY; } // Work around Chrome issue (#2712)\n    display.input.focus();\n    if (webkit) { window.scrollTo(null, oldScrollY); }\n    display.input.reset();\n    // Adds \"Select all\" to context menu in FF\n    if (!cm.somethingSelected()) { te.value = input.prevInput = \" \"; }\n    input.contextMenuPending = rehide;\n    display.selForContextMenu = cm.doc.sel;\n    clearTimeout(display.detectingSelectAll);\n\n    // Select-all will be greyed out if there's nothing to select, so\n    // this adds a zero-width space so that we can later check whether\n    // it got selected.\n    function prepareSelectAllHack() {\n      if (te.selectionStart != null) {\n        var selected = cm.somethingSelected();\n        var extval = \"\\u200b\" + (selected ? te.value : \"\");\n        te.value = \"\\u21da\"; // Used to catch context-menu undo\n        te.value = extval;\n        input.prevInput = selected ? \"\" : \"\\u200b\";\n        te.selectionStart = 1; te.selectionEnd = extval.length;\n        // Re-set this, in case some other handler touched the\n        // selection in the meantime.\n        display.selForContextMenu = cm.doc.sel;\n      }\n    }\n    function rehide() {\n      if (input.contextMenuPending != rehide) { return }\n      input.contextMenuPending = false;\n      input.wrapper.style.cssText = oldWrapperCSS;\n      te.style.cssText = oldCSS;\n      if (ie && ie_version < 9) { display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos); }\n\n      // Try to detect the user choosing select-all\n      if (te.selectionStart != null) {\n        if (!ie || (ie && ie_version < 9)) { prepareSelectAllHack(); }\n        var i = 0, poll = function () {\n          if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 &&\n              te.selectionEnd > 0 && input.prevInput == \"\\u200b\") {\n            operation(cm, selectAll)(cm);\n          } else if (i++ < 10) {\n            display.detectingSelectAll = setTimeout(poll, 500);\n          } else {\n            display.selForContextMenu = null;\n            display.input.reset();\n          }\n        };\n        display.detectingSelectAll = setTimeout(poll, 200);\n      }\n    }\n\n    if (ie && ie_version >= 9) { prepareSelectAllHack(); }\n    if (captureRightClick) {\n      e_stop(e);\n      var mouseup = function () {\n        off(window, \"mouseup\", mouseup);\n        setTimeout(rehide, 20);\n      };\n      on(window, \"mouseup\", mouseup);\n    } else {\n      setTimeout(rehide, 50);\n    }\n  };\n\n  TextareaInput.prototype.readOnlyChanged = function (val) {\n    if (!val) { this.reset(); }\n    this.textarea.disabled = val == \"nocursor\";\n    this.textarea.readOnly = !!val;\n  };\n\n  TextareaInput.prototype.setUneditable = function () {};\n\n  TextareaInput.prototype.needsContentAttribute = false;\n\n  function fromTextArea(textarea, options) {\n    options = options ? copyObj(options) : {};\n    options.value = textarea.value;\n    if (!options.tabindex && textarea.tabIndex)\n      { options.tabindex = textarea.tabIndex; }\n    if (!options.placeholder && textarea.placeholder)\n      { options.placeholder = textarea.placeholder; }\n    // Set autofocus to true if this textarea is focused, or if it has\n    // autofocus and no other element is focused.\n    if (options.autofocus == null) {\n      var hasFocus = activeElt();\n      options.autofocus = hasFocus == textarea ||\n        textarea.getAttribute(\"autofocus\") != null && hasFocus == document.body;\n    }\n\n    function save() {textarea.value = cm.getValue();}\n\n    var realSubmit;\n    if (textarea.form) {\n      on(textarea.form, \"submit\", save);\n      // Deplorable hack to make the submit method do the right thing.\n      if (!options.leaveSubmitMethodAlone) {\n        var form = textarea.form;\n        realSubmit = form.submit;\n        try {\n          var wrappedSubmit = form.submit = function () {\n            save();\n            form.submit = realSubmit;\n            form.submit();\n            form.submit = wrappedSubmit;\n          };\n        } catch(e) {}\n      }\n    }\n\n    options.finishInit = function (cm) {\n      cm.save = save;\n      cm.getTextArea = function () { return textarea; };\n      cm.toTextArea = function () {\n        cm.toTextArea = isNaN; // Prevent this from being ran twice\n        save();\n        textarea.parentNode.removeChild(cm.getWrapperElement());\n        textarea.style.display = \"\";\n        if (textarea.form) {\n          off(textarea.form, \"submit\", save);\n          if (!options.leaveSubmitMethodAlone && typeof textarea.form.submit == \"function\")\n            { textarea.form.submit = realSubmit; }\n        }\n      };\n    };\n\n    textarea.style.display = \"none\";\n    var cm = CodeMirror(function (node) { return textarea.parentNode.insertBefore(node, textarea.nextSibling); },\n      options);\n    return cm\n  }\n\n  function addLegacyProps(CodeMirror) {\n    CodeMirror.off = off;\n    CodeMirror.on = on;\n    CodeMirror.wheelEventPixels = wheelEventPixels;\n    CodeMirror.Doc = Doc;\n    CodeMirror.splitLines = splitLinesAuto;\n    CodeMirror.countColumn = countColumn;\n    CodeMirror.findColumn = findColumn;\n    CodeMirror.isWordChar = isWordCharBasic;\n    CodeMirror.Pass = Pass;\n    CodeMirror.signal = signal;\n    CodeMirror.Line = Line;\n    CodeMirror.changeEnd = changeEnd;\n    CodeMirror.scrollbarModel = scrollbarModel;\n    CodeMirror.Pos = Pos;\n    CodeMirror.cmpPos = cmp;\n    CodeMirror.modes = modes;\n    CodeMirror.mimeModes = mimeModes;\n    CodeMirror.resolveMode = resolveMode;\n    CodeMirror.getMode = getMode;\n    CodeMirror.modeExtensions = modeExtensions;\n    CodeMirror.extendMode = extendMode;\n    CodeMirror.copyState = copyState;\n    CodeMirror.startState = startState;\n    CodeMirror.innerMode = innerMode;\n    CodeMirror.commands = commands;\n    CodeMirror.keyMap = keyMap;\n    CodeMirror.keyName = keyName;\n    CodeMirror.isModifierKey = isModifierKey;\n    CodeMirror.lookupKey = lookupKey;\n    CodeMirror.normalizeKeyMap = normalizeKeyMap;\n    CodeMirror.StringStream = StringStream;\n    CodeMirror.SharedTextMarker = SharedTextMarker;\n    CodeMirror.TextMarker = TextMarker;\n    CodeMirror.LineWidget = LineWidget;\n    CodeMirror.e_preventDefault = e_preventDefault;\n    CodeMirror.e_stopPropagation = e_stopPropagation;\n    CodeMirror.e_stop = e_stop;\n    CodeMirror.addClass = addClass;\n    CodeMirror.contains = contains;\n    CodeMirror.rmClass = rmClass;\n    CodeMirror.keyNames = keyNames;\n  }\n\n  // EDITOR CONSTRUCTOR\n\n  defineOptions(CodeMirror);\n\n  addEditorMethods(CodeMirror);\n\n  // Set up methods on CodeMirror's prototype to redirect to the editor's document.\n  var dontDelegate = \"iter insert remove copy getEditor constructor\".split(\" \");\n  for (var prop in Doc.prototype) { if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)\n    { CodeMirror.prototype[prop] = (function(method) {\n      return function() {return method.apply(this.doc, arguments)}\n    })(Doc.prototype[prop]); } }\n\n  eventMixin(Doc);\n  CodeMirror.inputStyles = {\"textarea\": TextareaInput, \"contenteditable\": ContentEditableInput};\n\n  // Extra arguments are stored as the mode's dependencies, which is\n  // used by (legacy) mechanisms like loadmode.js to automatically\n  // load a mode. (Preferred mechanism is the require/define calls.)\n  CodeMirror.defineMode = function(name/*, mode, …*/) {\n    if (!CodeMirror.defaults.mode && name != \"null\") { CodeMirror.defaults.mode = name; }\n    defineMode.apply(this, arguments);\n  };\n\n  CodeMirror.defineMIME = defineMIME;\n\n  // Minimal default mode.\n  CodeMirror.defineMode(\"null\", function () { return ({token: function (stream) { return stream.skipToEnd(); }}); });\n  CodeMirror.defineMIME(\"text/plain\", \"null\");\n\n  // EXTENSIONS\n\n  CodeMirror.defineExtension = function (name, func) {\n    CodeMirror.prototype[name] = func;\n  };\n  CodeMirror.defineDocExtension = function (name, func) {\n    Doc.prototype[name] = func;\n  };\n\n  CodeMirror.fromTextArea = fromTextArea;\n\n  addLegacyProps(CodeMirror);\n\n  CodeMirror.version = \"5.65.1\";\n\n  return CodeMirror;\n\n})));\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n(function(mod) {\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n    mod(require(\"../../lib/codemirror\"));\n  else if (typeof define == \"function\" && define.amd) // AMD\n    define([\"../../lib/codemirror\"], mod);\n  else // Plain browser env\n    mod(CodeMirror);\n})(function(CodeMirror) {\n\"use strict\";\n\nCodeMirror.defineMode(\"javascript\", function(config, parserConfig) {\n  var indentUnit = config.indentUnit;\n  var statementIndent = parserConfig.statementIndent;\n  var jsonldMode = parserConfig.jsonld;\n  var jsonMode = parserConfig.json || jsonldMode;\n  var trackScope = parserConfig.trackScope !== false\n  var isTS = parserConfig.typescript;\n  var wordRE = parserConfig.wordCharacters || /[\\w$\\xa1-\\uffff]/;\n\n  // Tokenizer\n\n  var keywords = function(){\n    function kw(type) {return {type: type, style: \"keyword\"};}\n    var A = kw(\"keyword a\"), B = kw(\"keyword b\"), C = kw(\"keyword c\"), D = kw(\"keyword d\");\n    var operator = kw(\"operator\"), atom = {type: \"atom\", style: \"atom\"};\n\n    return {\n      \"if\": kw(\"if\"), \"while\": A, \"with\": A, \"else\": B, \"do\": B, \"try\": B, \"finally\": B,\n      \"return\": D, \"break\": D, \"continue\": D, \"new\": kw(\"new\"), \"delete\": C, \"void\": C, \"throw\": C,\n      \"debugger\": kw(\"debugger\"), \"var\": kw(\"var\"), \"const\": kw(\"var\"), \"let\": kw(\"var\"),\n      \"function\": kw(\"function\"), \"catch\": kw(\"catch\"),\n      \"for\": kw(\"for\"), \"switch\": kw(\"switch\"), \"case\": kw(\"case\"), \"default\": kw(\"default\"),\n      \"in\": operator, \"typeof\": operator, \"instanceof\": operator,\n      \"true\": atom, \"false\": atom, \"null\": atom, \"undefined\": atom, \"NaN\": atom, \"Infinity\": atom,\n      \"this\": kw(\"this\"), \"class\": kw(\"class\"), \"super\": kw(\"atom\"),\n      \"yield\": C, \"export\": kw(\"export\"), \"import\": kw(\"import\"), \"extends\": C,\n      \"await\": C\n    };\n  }();\n\n  var isOperatorChar = /[+\\-*&%=<>!?|~^@]/;\n  var isJsonldKeyword = /^@(context|id|value|language|type|container|list|set|reverse|index|base|vocab|graph)\"/;\n\n  function readRegexp(stream) {\n    var escaped = false, next, inSet = false;\n    while ((next = stream.next()) != null) {\n      if (!escaped) {\n        if (next == \"/\" && !inSet) return;\n        if (next == \"[\") inSet = true;\n        else if (inSet && next == \"]\") inSet = false;\n      }\n      escaped = !escaped && next == \"\\\\\";\n    }\n  }\n\n  // Used as scratch variables to communicate multiple values without\n  // consing up tons of objects.\n  var type, content;\n  function ret(tp, style, cont) {\n    type = tp; content = cont;\n    return style;\n  }\n  function tokenBase(stream, state) {\n    var ch = stream.next();\n    if (ch == '\"' || ch == \"'\") {\n      state.tokenize = tokenString(ch);\n      return state.tokenize(stream, state);\n    } else if (ch == \".\" && stream.match(/^\\d[\\d_]*(?:[eE][+\\-]?[\\d_]+)?/)) {\n      return ret(\"number\", \"number\");\n    } else if (ch == \".\" && stream.match(\"..\")) {\n      return ret(\"spread\", \"meta\");\n    } else if (/[\\[\\]{}\\(\\),;\\:\\.]/.test(ch)) {\n      return ret(ch);\n    } else if (ch == \"=\" && stream.eat(\">\")) {\n      return ret(\"=>\", \"operator\");\n    } else if (ch == \"0\" && stream.match(/^(?:x[\\dA-Fa-f_]+|o[0-7_]+|b[01_]+)n?/)) {\n      return ret(\"number\", \"number\");\n    } else if (/\\d/.test(ch)) {\n      stream.match(/^[\\d_]*(?:n|(?:\\.[\\d_]*)?(?:[eE][+\\-]?[\\d_]+)?)?/);\n      return ret(\"number\", \"number\");\n    } else if (ch == \"/\") {\n      if (stream.eat(\"*\")) {\n        state.tokenize = tokenComment;\n        return tokenComment(stream, state);\n      } else if (stream.eat(\"/\")) {\n        stream.skipToEnd();\n        return ret(\"comment\", \"comment\");\n      } else if (expressionAllowed(stream, state, 1)) {\n        readRegexp(stream);\n        stream.match(/^\\b(([gimyus])(?![gimyus]*\\2))+\\b/);\n        return ret(\"regexp\", \"string-2\");\n      } else {\n        stream.eat(\"=\");\n        return ret(\"operator\", \"operator\", stream.current());\n      }\n    } else if (ch == \"`\") {\n      state.tokenize = tokenQuasi;\n      return tokenQuasi(stream, state);\n    } else if (ch == \"#\" && stream.peek() == \"!\") {\n      stream.skipToEnd();\n      return ret(\"meta\", \"meta\");\n    } else if (ch == \"#\" && stream.eatWhile(wordRE)) {\n      return ret(\"variable\", \"property\")\n    } else if (ch == \"<\" && stream.match(\"!--\") ||\n               (ch == \"-\" && stream.match(\"->\") && !/\\S/.test(stream.string.slice(0, stream.start)))) {\n      stream.skipToEnd()\n      return ret(\"comment\", \"comment\")\n    } else if (isOperatorChar.test(ch)) {\n      if (ch != \">\" || !state.lexical || state.lexical.type != \">\") {\n        if (stream.eat(\"=\")) {\n          if (ch == \"!\" || ch == \"=\") stream.eat(\"=\")\n        } else if (/[<>*+\\-|&?]/.test(ch)) {\n          stream.eat(ch)\n          if (ch == \">\") stream.eat(ch)\n        }\n      }\n      if (ch == \"?\" && stream.eat(\".\")) return ret(\".\")\n      return ret(\"operator\", \"operator\", stream.current());\n    } else if (wordRE.test(ch)) {\n      stream.eatWhile(wordRE);\n      var word = stream.current()\n      if (state.lastType != \".\") {\n        if (keywords.propertyIsEnumerable(word)) {\n          var kw = keywords[word]\n          return ret(kw.type, kw.style, word)\n        }\n        if (word == \"async\" && stream.match(/^(\\s|\\/\\*([^*]|\\*(?!\\/))*?\\*\\/)*[\\[\\(\\w]/, false))\n          return ret(\"async\", \"keyword\", word)\n      }\n      return ret(\"variable\", \"variable\", word)\n    }\n  }\n\n  function tokenString(quote) {\n    return function(stream, state) {\n      var escaped = false, next;\n      if (jsonldMode && stream.peek() == \"@\" && stream.match(isJsonldKeyword)){\n        state.tokenize = tokenBase;\n        return ret(\"jsonld-keyword\", \"meta\");\n      }\n      while ((next = stream.next()) != null) {\n        if (next == quote && !escaped) break;\n        escaped = !escaped && next == \"\\\\\";\n      }\n      if (!escaped) state.tokenize = tokenBase;\n      return ret(\"string\", \"string\");\n    };\n  }\n\n  function tokenComment(stream, state) {\n    var maybeEnd = false, ch;\n    while (ch = stream.next()) {\n      if (ch == \"/\" && maybeEnd) {\n        state.tokenize = tokenBase;\n        break;\n      }\n      maybeEnd = (ch == \"*\");\n    }\n    return ret(\"comment\", \"comment\");\n  }\n\n  function tokenQuasi(stream, state) {\n    var escaped = false, next;\n    while ((next = stream.next()) != null) {\n      if (!escaped && (next == \"`\" || next == \"$\" && stream.eat(\"{\"))) {\n        state.tokenize = tokenBase;\n        break;\n      }\n      escaped = !escaped && next == \"\\\\\";\n    }\n    return ret(\"quasi\", \"string-2\", stream.current());\n  }\n\n  var brackets = \"([{}])\";\n  // This is a crude lookahead trick to try and notice that we're\n  // parsing the argument patterns for a fat-arrow function before we\n  // actually hit the arrow token. It only works if the arrow is on\n  // the same line as the arguments and there's no strange noise\n  // (comments) in between. Fallback is to only notice when we hit the\n  // arrow, and not declare the arguments as locals for the arrow\n  // body.\n  function findFatArrow(stream, state) {\n    if (state.fatArrowAt) state.fatArrowAt = null;\n    var arrow = stream.string.indexOf(\"=>\", stream.start);\n    if (arrow < 0) return;\n\n    if (isTS) { // Try to skip TypeScript return type declarations after the arguments\n      var m = /:\\s*(?:\\w+(?:<[^>]*>|\\[\\])?|\\{[^}]*\\})\\s*$/.exec(stream.string.slice(stream.start, arrow))\n      if (m) arrow = m.index\n    }\n\n    var depth = 0, sawSomething = false;\n    for (var pos = arrow - 1; pos >= 0; --pos) {\n      var ch = stream.string.charAt(pos);\n      var bracket = brackets.indexOf(ch);\n      if (bracket >= 0 && bracket < 3) {\n        if (!depth) { ++pos; break; }\n        if (--depth == 0) { if (ch == \"(\") sawSomething = true; break; }\n      } else if (bracket >= 3 && bracket < 6) {\n        ++depth;\n      } else if (wordRE.test(ch)) {\n        sawSomething = true;\n      } else if (/[\"'\\/`]/.test(ch)) {\n        for (;; --pos) {\n          if (pos == 0) return\n          var next = stream.string.charAt(pos - 1)\n          if (next == ch && stream.string.charAt(pos - 2) != \"\\\\\") { pos--; break }\n        }\n      } else if (sawSomething && !depth) {\n        ++pos;\n        break;\n      }\n    }\n    if (sawSomething && !depth) state.fatArrowAt = pos;\n  }\n\n  // Parser\n\n  var atomicTypes = {\"atom\": true, \"number\": true, \"variable\": true, \"string\": true,\n                     \"regexp\": true, \"this\": true, \"import\": true, \"jsonld-keyword\": true};\n\n  function JSLexical(indented, column, type, align, prev, info) {\n    this.indented = indented;\n    this.column = column;\n    this.type = type;\n    this.prev = prev;\n    this.info = info;\n    if (align != null) this.align = align;\n  }\n\n  function inScope(state, varname) {\n    if (!trackScope) return false\n    for (var v = state.localVars; v; v = v.next)\n      if (v.name == varname) return true;\n    for (var cx = state.context; cx; cx = cx.prev) {\n      for (var v = cx.vars; v; v = v.next)\n        if (v.name == varname) return true;\n    }\n  }\n\n  function parseJS(state, style, type, content, stream) {\n    var cc = state.cc;\n    // Communicate our context to the combinators.\n    // (Less wasteful than consing up a hundred closures on every call.)\n    cx.state = state; cx.stream = stream; cx.marked = null, cx.cc = cc; cx.style = style;\n\n    if (!state.lexical.hasOwnProperty(\"align\"))\n      state.lexical.align = true;\n\n    while(true) {\n      var combinator = cc.length ? cc.pop() : jsonMode ? expression : statement;\n      if (combinator(type, content)) {\n        while(cc.length && cc[cc.length - 1].lex)\n          cc.pop()();\n        if (cx.marked) return cx.marked;\n        if (type == \"variable\" && inScope(state, content)) return \"variable-2\";\n        return style;\n      }\n    }\n  }\n\n  // Combinator utils\n\n  var cx = {state: null, column: null, marked: null, cc: null};\n  function pass() {\n    for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i]);\n  }\n  function cont() {\n    pass.apply(null, arguments);\n    return true;\n  }\n  function inList(name, list) {\n    for (var v = list; v; v = v.next) if (v.name == name) return true\n    return false;\n  }\n  function register(varname) {\n    var state = cx.state;\n    cx.marked = \"def\";\n    if (!trackScope) return\n    if (state.context) {\n      if (state.lexical.info == \"var\" && state.context && state.context.block) {\n        // FIXME function decls are also not block scoped\n        var newContext = registerVarScoped(varname, state.context)\n        if (newContext != null) {\n          state.context = newContext\n          return\n        }\n      } else if (!inList(varname, state.localVars)) {\n        state.localVars = new Var(varname, state.localVars)\n        return\n      }\n    }\n    // Fall through means this is global\n    if (parserConfig.globalVars && !inList(varname, state.globalVars))\n      state.globalVars = new Var(varname, state.globalVars)\n  }\n  function registerVarScoped(varname, context) {\n    if (!context) {\n      return null\n    } else if (context.block) {\n      var inner = registerVarScoped(varname, context.prev)\n      if (!inner) return null\n      if (inner == context.prev) return context\n      return new Context(inner, context.vars, true)\n    } else if (inList(varname, context.vars)) {\n      return context\n    } else {\n      return new Context(context.prev, new Var(varname, context.vars), false)\n    }\n  }\n\n  function isModifier(name) {\n    return name == \"public\" || name == \"private\" || name == \"protected\" || name == \"abstract\" || name == \"readonly\"\n  }\n\n  // Combinators\n\n  function Context(prev, vars, block) { this.prev = prev; this.vars = vars; this.block = block }\n  function Var(name, next) { this.name = name; this.next = next }\n\n  var defaultVars = new Var(\"this\", new Var(\"arguments\", null))\n  function pushcontext() {\n    cx.state.context = new Context(cx.state.context, cx.state.localVars, false)\n    cx.state.localVars = defaultVars\n  }\n  function pushblockcontext() {\n    cx.state.context = new Context(cx.state.context, cx.state.localVars, true)\n    cx.state.localVars = null\n  }\n  pushcontext.lex = pushblockcontext.lex = true\n  function popcontext() {\n    cx.state.localVars = cx.state.context.vars\n    cx.state.context = cx.state.context.prev\n  }\n  popcontext.lex = true\n  function pushlex(type, info) {\n    var result = function() {\n      var state = cx.state, indent = state.indented;\n      if (state.lexical.type == \"stat\") indent = state.lexical.indented;\n      else for (var outer = state.lexical; outer && outer.type == \")\" && outer.align; outer = outer.prev)\n        indent = outer.indented;\n      state.lexical = new JSLexical(indent, cx.stream.column(), type, null, state.lexical, info);\n    };\n    result.lex = true;\n    return result;\n  }\n  function poplex() {\n    var state = cx.state;\n    if (state.lexical.prev) {\n      if (state.lexical.type == \")\")\n        state.indented = state.lexical.indented;\n      state.lexical = state.lexical.prev;\n    }\n  }\n  poplex.lex = true;\n\n  function expect(wanted) {\n    function exp(type) {\n      if (type == wanted) return cont();\n      else if (wanted == \";\" || type == \"}\" || type == \")\" || type == \"]\") return pass();\n      else return cont(exp);\n    };\n    return exp;\n  }\n\n  function statement(type, value) {\n    if (type == \"var\") return cont(pushlex(\"vardef\", value), vardef, expect(\";\"), poplex);\n    if (type == \"keyword a\") return cont(pushlex(\"form\"), parenExpr, statement, poplex);\n    if (type == \"keyword b\") return cont(pushlex(\"form\"), statement, poplex);\n    if (type == \"keyword d\") return cx.stream.match(/^\\s*$/, false) ? cont() : cont(pushlex(\"stat\"), maybeexpression, expect(\";\"), poplex);\n    if (type == \"debugger\") return cont(expect(\";\"));\n    if (type == \"{\") return cont(pushlex(\"}\"), pushblockcontext, block, poplex, popcontext);\n    if (type == \";\") return cont();\n    if (type == \"if\") {\n      if (cx.state.lexical.info == \"else\" && cx.state.cc[cx.state.cc.length - 1] == poplex)\n        cx.state.cc.pop()();\n      return cont(pushlex(\"form\"), parenExpr, statement, poplex, maybeelse);\n    }\n    if (type == \"function\") return cont(functiondef);\n    if (type == \"for\") return cont(pushlex(\"form\"), pushblockcontext, forspec, statement, popcontext, poplex);\n    if (type == \"class\" || (isTS && value == \"interface\")) {\n      cx.marked = \"keyword\"\n      return cont(pushlex(\"form\", type == \"class\" ? type : value), className, poplex)\n    }\n    if (type == \"variable\") {\n      if (isTS && value == \"declare\") {\n        cx.marked = \"keyword\"\n        return cont(statement)\n      } else if (isTS && (value == \"module\" || value == \"enum\" || value == \"type\") && cx.stream.match(/^\\s*\\w/, false)) {\n        cx.marked = \"keyword\"\n        if (value == \"enum\") return cont(enumdef);\n        else if (value == \"type\") return cont(typename, expect(\"operator\"), typeexpr, expect(\";\"));\n        else return cont(pushlex(\"form\"), pattern, expect(\"{\"), pushlex(\"}\"), block, poplex, poplex)\n      } else if (isTS && value == \"namespace\") {\n        cx.marked = \"keyword\"\n        return cont(pushlex(\"form\"), expression, statement, poplex)\n      } else if (isTS && value == \"abstract\") {\n        cx.marked = \"keyword\"\n        return cont(statement)\n      } else {\n        return cont(pushlex(\"stat\"), maybelabel);\n      }\n    }\n    if (type == \"switch\") return cont(pushlex(\"form\"), parenExpr, expect(\"{\"), pushlex(\"}\", \"switch\"), pushblockcontext,\n                                      block, poplex, poplex, popcontext);\n    if (type == \"case\") return cont(expression, expect(\":\"));\n    if (type == \"default\") return cont(expect(\":\"));\n    if (type == \"catch\") return cont(pushlex(\"form\"), pushcontext, maybeCatchBinding, statement, poplex, popcontext);\n    if (type == \"export\") return cont(pushlex(\"stat\"), afterExport, poplex);\n    if (type == \"import\") return cont(pushlex(\"stat\"), afterImport, poplex);\n    if (type == \"async\") return cont(statement)\n    if (value == \"@\") return cont(expression, statement)\n    return pass(pushlex(\"stat\"), expression, expect(\";\"), poplex);\n  }\n  function maybeCatchBinding(type) {\n    if (type == \"(\") return cont(funarg, expect(\")\"))\n  }\n  function expression(type, value) {\n    return expressionInner(type, value, false);\n  }\n  function expressionNoComma(type, value) {\n    return expressionInner(type, value, true);\n  }\n  function parenExpr(type) {\n    if (type != \"(\") return pass()\n    return cont(pushlex(\")\"), maybeexpression, expect(\")\"), poplex)\n  }\n  function expressionInner(type, value, noComma) {\n    if (cx.state.fatArrowAt == cx.stream.start) {\n      var body = noComma ? arrowBodyNoComma : arrowBody;\n      if (type == \"(\") return cont(pushcontext, pushlex(\")\"), commasep(funarg, \")\"), poplex, expect(\"=>\"), body, popcontext);\n      else if (type == \"variable\") return pass(pushcontext, pattern, expect(\"=>\"), body, popcontext);\n    }\n\n    var maybeop = noComma ? maybeoperatorNoComma : maybeoperatorComma;\n    if (atomicTypes.hasOwnProperty(type)) return cont(maybeop);\n    if (type == \"function\") return cont(functiondef, maybeop);\n    if (type == \"class\" || (isTS && value == \"interface\")) { cx.marked = \"keyword\"; return cont(pushlex(\"form\"), classExpression, poplex); }\n    if (type == \"keyword c\" || type == \"async\") return cont(noComma ? expressionNoComma : expression);\n    if (type == \"(\") return cont(pushlex(\")\"), maybeexpression, expect(\")\"), poplex, maybeop);\n    if (type == \"operator\" || type == \"spread\") return cont(noComma ? expressionNoComma : expression);\n    if (type == \"[\") return cont(pushlex(\"]\"), arrayLiteral, poplex, maybeop);\n    if (type == \"{\") return contCommasep(objprop, \"}\", null, maybeop);\n    if (type == \"quasi\") return pass(quasi, maybeop);\n    if (type == \"new\") return cont(maybeTarget(noComma));\n    return cont();\n  }\n  function maybeexpression(type) {\n    if (type.match(/[;\\}\\)\\],]/)) return pass();\n    return pass(expression);\n  }\n\n  function maybeoperatorComma(type, value) {\n    if (type == \",\") return cont(maybeexpression);\n    return maybeoperatorNoComma(type, value, false);\n  }\n  function maybeoperatorNoComma(type, value, noComma) {\n    var me = noComma == false ? maybeoperatorComma : maybeoperatorNoComma;\n    var expr = noComma == false ? expression : expressionNoComma;\n    if (type == \"=>\") return cont(pushcontext, noComma ? arrowBodyNoComma : arrowBody, popcontext);\n    if (type == \"operator\") {\n      if (/\\+\\+|--/.test(value) || isTS && value == \"!\") return cont(me);\n      if (isTS && value == \"<\" && cx.stream.match(/^([^<>]|<[^<>]*>)*>\\s*\\(/, false))\n        return cont(pushlex(\">\"), commasep(typeexpr, \">\"), poplex, me);\n      if (value == \"?\") return cont(expression, expect(\":\"), expr);\n      return cont(expr);\n    }\n    if (type == \"quasi\") { return pass(quasi, me); }\n    if (type == \";\") return;\n    if (type == \"(\") return contCommasep(expressionNoComma, \")\", \"call\", me);\n    if (type == \".\") return cont(property, me);\n    if (type == \"[\") return cont(pushlex(\"]\"), maybeexpression, expect(\"]\"), poplex, me);\n    if (isTS && value == \"as\") { cx.marked = \"keyword\"; return cont(typeexpr, me) }\n    if (type == \"regexp\") {\n      cx.state.lastType = cx.marked = \"operator\"\n      cx.stream.backUp(cx.stream.pos - cx.stream.start - 1)\n      return cont(expr)\n    }\n  }\n  function quasi(type, value) {\n    if (type != \"quasi\") return pass();\n    if (value.slice(value.length - 2) != \"${\") return cont(quasi);\n    return cont(maybeexpression, continueQuasi);\n  }\n  function continueQuasi(type) {\n    if (type == \"}\") {\n      cx.marked = \"string-2\";\n      cx.state.tokenize = tokenQuasi;\n      return cont(quasi);\n    }\n  }\n  function arrowBody(type) {\n    findFatArrow(cx.stream, cx.state);\n    return pass(type == \"{\" ? statement : expression);\n  }\n  function arrowBodyNoComma(type) {\n    findFatArrow(cx.stream, cx.state);\n    return pass(type == \"{\" ? statement : expressionNoComma);\n  }\n  function maybeTarget(noComma) {\n    return function(type) {\n      if (type == \".\") return cont(noComma ? targetNoComma : target);\n      else if (type == \"variable\" && isTS) return cont(maybeTypeArgs, noComma ? maybeoperatorNoComma : maybeoperatorComma)\n      else return pass(noComma ? expressionNoComma : expression);\n    };\n  }\n  function target(_, value) {\n    if (value == \"target\") { cx.marked = \"keyword\"; return cont(maybeoperatorComma); }\n  }\n  function targetNoComma(_, value) {\n    if (value == \"target\") { cx.marked = \"keyword\"; return cont(maybeoperatorNoComma); }\n  }\n  function maybelabel(type) {\n    if (type == \":\") return cont(poplex, statement);\n    return pass(maybeoperatorComma, expect(\";\"), poplex);\n  }\n  function property(type) {\n    if (type == \"variable\") {cx.marked = \"property\"; return cont();}\n  }\n  function objprop(type, value) {\n    if (type == \"async\") {\n      cx.marked = \"property\";\n      return cont(objprop);\n    } else if (type == \"variable\" || cx.style == \"keyword\") {\n      cx.marked = \"property\";\n      if (value == \"get\" || value == \"set\") return cont(getterSetter);\n      var m // Work around fat-arrow-detection complication for detecting typescript typed arrow params\n      if (isTS && cx.state.fatArrowAt == cx.stream.start && (m = cx.stream.match(/^\\s*:\\s*/, false)))\n        cx.state.fatArrowAt = cx.stream.pos + m[0].length\n      return cont(afterprop);\n    } else if (type == \"number\" || type == \"string\") {\n      cx.marked = jsonldMode ? \"property\" : (cx.style + \" property\");\n      return cont(afterprop);\n    } else if (type == \"jsonld-keyword\") {\n      return cont(afterprop);\n    } else if (isTS && isModifier(value)) {\n      cx.marked = \"keyword\"\n      return cont(objprop)\n    } else if (type == \"[\") {\n      return cont(expression, maybetype, expect(\"]\"), afterprop);\n    } else if (type == \"spread\") {\n      return cont(expressionNoComma, afterprop);\n    } else if (value == \"*\") {\n      cx.marked = \"keyword\";\n      return cont(objprop);\n    } else if (type == \":\") {\n      return pass(afterprop)\n    }\n  }\n  function getterSetter(type) {\n    if (type != \"variable\") return pass(afterprop);\n    cx.marked = \"property\";\n    return cont(functiondef);\n  }\n  function afterprop(type) {\n    if (type == \":\") return cont(expressionNoComma);\n    if (type == \"(\") return pass(functiondef);\n  }\n  function commasep(what, end, sep) {\n    function proceed(type, value) {\n      if (sep ? sep.indexOf(type) > -1 : type == \",\") {\n        var lex = cx.state.lexical;\n        if (lex.info == \"call\") lex.pos = (lex.pos || 0) + 1;\n        return cont(function(type, value) {\n          if (type == end || value == end) return pass()\n          return pass(what)\n        }, proceed);\n      }\n      if (type == end || value == end) return cont();\n      if (sep && sep.indexOf(\";\") > -1) return pass(what)\n      return cont(expect(end));\n    }\n    return function(type, value) {\n      if (type == end || value == end) return cont();\n      return pass(what, proceed);\n    };\n  }\n  function contCommasep(what, end, info) {\n    for (var i = 3; i < arguments.length; i++)\n      cx.cc.push(arguments[i]);\n    return cont(pushlex(end, info), commasep(what, end), poplex);\n  }\n  function block(type) {\n    if (type == \"}\") return cont();\n    return pass(statement, block);\n  }\n  function maybetype(type, value) {\n    if (isTS) {\n      if (type == \":\") return cont(typeexpr);\n      if (value == \"?\") return cont(maybetype);\n    }\n  }\n  function maybetypeOrIn(type, value) {\n    if (isTS && (type == \":\" || value == \"in\")) return cont(typeexpr)\n  }\n  function mayberettype(type) {\n    if (isTS && type == \":\") {\n      if (cx.stream.match(/^\\s*\\w+\\s+is\\b/, false)) return cont(expression, isKW, typeexpr)\n      else return cont(typeexpr)\n    }\n  }\n  function isKW(_, value) {\n    if (value == \"is\") {\n      cx.marked = \"keyword\"\n      return cont()\n    }\n  }\n  function typeexpr(type, value) {\n    if (value == \"keyof\" || value == \"typeof\" || value == \"infer\" || value == \"readonly\") {\n      cx.marked = \"keyword\"\n      return cont(value == \"typeof\" ? expressionNoComma : typeexpr)\n    }\n    if (type == \"variable\" || value == \"void\") {\n      cx.marked = \"type\"\n      return cont(afterType)\n    }\n    if (value == \"|\" || value == \"&\") return cont(typeexpr)\n    if (type == \"string\" || type == \"number\" || type == \"atom\") return cont(afterType);\n    if (type == \"[\") return cont(pushlex(\"]\"), commasep(typeexpr, \"]\", \",\"), poplex, afterType)\n    if (type == \"{\") return cont(pushlex(\"}\"), typeprops, poplex, afterType)\n    if (type == \"(\") return cont(commasep(typearg, \")\"), maybeReturnType, afterType)\n    if (type == \"<\") return cont(commasep(typeexpr, \">\"), typeexpr)\n    if (type == \"quasi\") { return pass(quasiType, afterType); }\n  }\n  function maybeReturnType(type) {\n    if (type == \"=>\") return cont(typeexpr)\n  }\n  function typeprops(type) {\n    if (type.match(/[\\}\\)\\]]/)) return cont()\n    if (type == \",\" || type == \";\") return cont(typeprops)\n    return pass(typeprop, typeprops)\n  }\n  function typeprop(type, value) {\n    if (type == \"variable\" || cx.style == \"keyword\") {\n      cx.marked = \"property\"\n      return cont(typeprop)\n    } else if (value == \"?\" || type == \"number\" || type == \"string\") {\n      return cont(typeprop)\n    } else if (type == \":\") {\n      return cont(typeexpr)\n    } else if (type == \"[\") {\n      return cont(expect(\"variable\"), maybetypeOrIn, expect(\"]\"), typeprop)\n    } else if (type == \"(\") {\n      return pass(functiondecl, typeprop)\n    } else if (!type.match(/[;\\}\\)\\],]/)) {\n      return cont()\n    }\n  }\n  function quasiType(type, value) {\n    if (type != \"quasi\") return pass();\n    if (value.slice(value.length - 2) != \"${\") return cont(quasiType);\n    return cont(typeexpr, continueQuasiType);\n  }\n  function continueQuasiType(type) {\n    if (type == \"}\") {\n      cx.marked = \"string-2\";\n      cx.state.tokenize = tokenQuasi;\n      return cont(quasiType);\n    }\n  }\n  function typearg(type, value) {\n    if (type == \"variable\" && cx.stream.match(/^\\s*[?:]/, false) || value == \"?\") return cont(typearg)\n    if (type == \":\") return cont(typeexpr)\n    if (type == \"spread\") return cont(typearg)\n    return pass(typeexpr)\n  }\n  function afterType(type, value) {\n    if (value == \"<\") return cont(pushlex(\">\"), commasep(typeexpr, \">\"), poplex, afterType)\n    if (value == \"|\" || type == \".\" || value == \"&\") return cont(typeexpr)\n    if (type == \"[\") return cont(typeexpr, expect(\"]\"), afterType)\n    if (value == \"extends\" || value == \"implements\") { cx.marked = \"keyword\"; return cont(typeexpr) }\n    if (value == \"?\") return cont(typeexpr, expect(\":\"), typeexpr)\n  }\n  function maybeTypeArgs(_, value) {\n    if (value == \"<\") return cont(pushlex(\">\"), commasep(typeexpr, \">\"), poplex, afterType)\n  }\n  function typeparam() {\n    return pass(typeexpr, maybeTypeDefault)\n  }\n  function maybeTypeDefault(_, value) {\n    if (value == \"=\") return cont(typeexpr)\n  }\n  function vardef(_, value) {\n    if (value == \"enum\") {cx.marked = \"keyword\"; return cont(enumdef)}\n    return pass(pattern, maybetype, maybeAssign, vardefCont);\n  }\n  function pattern(type, value) {\n    if (isTS && isModifier(value)) { cx.marked = \"keyword\"; return cont(pattern) }\n    if (type == \"variable\") { register(value); return cont(); }\n    if (type == \"spread\") return cont(pattern);\n    if (type == \"[\") return contCommasep(eltpattern, \"]\");\n    if (type == \"{\") return contCommasep(proppattern, \"}\");\n  }\n  function proppattern(type, value) {\n    if (type == \"variable\" && !cx.stream.match(/^\\s*:/, false)) {\n      register(value);\n      return cont(maybeAssign);\n    }\n    if (type == \"variable\") cx.marked = \"property\";\n    if (type == \"spread\") return cont(pattern);\n    if (type == \"}\") return pass();\n    if (type == \"[\") return cont(expression, expect(']'), expect(':'), proppattern);\n    return cont(expect(\":\"), pattern, maybeAssign);\n  }\n  function eltpattern() {\n    return pass(pattern, maybeAssign)\n  }\n  function maybeAssign(_type, value) {\n    if (value == \"=\") return cont(expressionNoComma);\n  }\n  function vardefCont(type) {\n    if (type == \",\") return cont(vardef);\n  }\n  function maybeelse(type, value) {\n    if (type == \"keyword b\" && value == \"else\") return cont(pushlex(\"form\", \"else\"), statement, poplex);\n  }\n  function forspec(type, value) {\n    if (value == \"await\") return cont(forspec);\n    if (type == \"(\") return cont(pushlex(\")\"), forspec1, poplex);\n  }\n  function forspec1(type) {\n    if (type == \"var\") return cont(vardef, forspec2);\n    if (type == \"variable\") return cont(forspec2);\n    return pass(forspec2)\n  }\n  function forspec2(type, value) {\n    if (type == \")\") return cont()\n    if (type == \";\") return cont(forspec2)\n    if (value == \"in\" || value == \"of\") { cx.marked = \"keyword\"; return cont(expression, forspec2) }\n    return pass(expression, forspec2)\n  }\n  function functiondef(type, value) {\n    if (value == \"*\") {cx.marked = \"keyword\"; return cont(functiondef);}\n    if (type == \"variable\") {register(value); return cont(functiondef);}\n    if (type == \"(\") return cont(pushcontext, pushlex(\")\"), commasep(funarg, \")\"), poplex, mayberettype, statement, popcontext);\n    if (isTS && value == \"<\") return cont(pushlex(\">\"), commasep(typeparam, \">\"), poplex, functiondef)\n  }\n  function functiondecl(type, value) {\n    if (value == \"*\") {cx.marked = \"keyword\"; return cont(functiondecl);}\n    if (type == \"variable\") {register(value); return cont(functiondecl);}\n    if (type == \"(\") return cont(pushcontext, pushlex(\")\"), commasep(funarg, \")\"), poplex, mayberettype, popcontext);\n    if (isTS && value == \"<\") return cont(pushlex(\">\"), commasep(typeparam, \">\"), poplex, functiondecl)\n  }\n  function typename(type, value) {\n    if (type == \"keyword\" || type == \"variable\") {\n      cx.marked = \"type\"\n      return cont(typename)\n    } else if (value == \"<\") {\n      return cont(pushlex(\">\"), commasep(typeparam, \">\"), poplex)\n    }\n  }\n  function funarg(type, value) {\n    if (value == \"@\") cont(expression, funarg)\n    if (type == \"spread\") return cont(funarg);\n    if (isTS && isModifier(value)) { cx.marked = \"keyword\"; return cont(funarg); }\n    if (isTS && type == \"this\") return cont(maybetype, maybeAssign)\n    return pass(pattern, maybetype, maybeAssign);\n  }\n  function classExpression(type, value) {\n    // Class expressions may have an optional name.\n    if (type == \"variable\") return className(type, value);\n    return classNameAfter(type, value);\n  }\n  function className(type, value) {\n    if (type == \"variable\") {register(value); return cont(classNameAfter);}\n  }\n  function classNameAfter(type, value) {\n    if (value == \"<\") return cont(pushlex(\">\"), commasep(typeparam, \">\"), poplex, classNameAfter)\n    if (value == \"extends\" || value == \"implements\" || (isTS && type == \",\")) {\n      if (value == \"implements\") cx.marked = \"keyword\";\n      return cont(isTS ? typeexpr : expression, classNameAfter);\n    }\n    if (type == \"{\") return cont(pushlex(\"}\"), classBody, poplex);\n  }\n  function classBody(type, value) {\n    if (type == \"async\" ||\n        (type == \"variable\" &&\n         (value == \"static\" || value == \"get\" || value == \"set\" || (isTS && isModifier(value))) &&\n         cx.stream.match(/^\\s+[\\w$\\xa1-\\uffff]/, false))) {\n      cx.marked = \"keyword\";\n      return cont(classBody);\n    }\n    if (type == \"variable\" || cx.style == \"keyword\") {\n      cx.marked = \"property\";\n      return cont(classfield, classBody);\n    }\n    if (type == \"number\" || type == \"string\") return cont(classfield, classBody);\n    if (type == \"[\")\n      return cont(expression, maybetype, expect(\"]\"), classfield, classBody)\n    if (value == \"*\") {\n      cx.marked = \"keyword\";\n      return cont(classBody);\n    }\n    if (isTS && type == \"(\") return pass(functiondecl, classBody)\n    if (type == \";\" || type == \",\") return cont(classBody);\n    if (type == \"}\") return cont();\n    if (value == \"@\") return cont(expression, classBody)\n  }\n  function classfield(type, value) {\n    if (value == \"!\") return cont(classfield)\n    if (value == \"?\") return cont(classfield)\n    if (type == \":\") return cont(typeexpr, maybeAssign)\n    if (value == \"=\") return cont(expressionNoComma)\n    var context = cx.state.lexical.prev, isInterface = context && context.info == \"interface\"\n    return pass(isInterface ? functiondecl : functiondef)\n  }\n  function afterExport(type, value) {\n    if (value == \"*\") { cx.marked = \"keyword\"; return cont(maybeFrom, expect(\";\")); }\n    if (value == \"default\") { cx.marked = \"keyword\"; return cont(expression, expect(\";\")); }\n    if (type == \"{\") return cont(commasep(exportField, \"}\"), maybeFrom, expect(\";\"));\n    return pass(statement);\n  }\n  function exportField(type, value) {\n    if (value == \"as\") { cx.marked = \"keyword\"; return cont(expect(\"variable\")); }\n    if (type == \"variable\") return pass(expressionNoComma, exportField);\n  }\n  function afterImport(type) {\n    if (type == \"string\") return cont();\n    if (type == \"(\") return pass(expression);\n    if (type == \".\") return pass(maybeoperatorComma);\n    return pass(importSpec, maybeMoreImports, maybeFrom);\n  }\n  function importSpec(type, value) {\n    if (type == \"{\") return contCommasep(importSpec, \"}\");\n    if (type == \"variable\") register(value);\n    if (value == \"*\") cx.marked = \"keyword\";\n    return cont(maybeAs);\n  }\n  function maybeMoreImports(type) {\n    if (type == \",\") return cont(importSpec, maybeMoreImports)\n  }\n  function maybeAs(_type, value) {\n    if (value == \"as\") { cx.marked = \"keyword\"; return cont(importSpec); }\n  }\n  function maybeFrom(_type, value) {\n    if (value == \"from\") { cx.marked = \"keyword\"; return cont(expression); }\n  }\n  function arrayLiteral(type) {\n    if (type == \"]\") return cont();\n    return pass(commasep(expressionNoComma, \"]\"));\n  }\n  function enumdef() {\n    return pass(pushlex(\"form\"), pattern, expect(\"{\"), pushlex(\"}\"), commasep(enummember, \"}\"), poplex, poplex)\n  }\n  function enummember() {\n    return pass(pattern, maybeAssign);\n  }\n\n  function isContinuedStatement(state, textAfter) {\n    return state.lastType == \"operator\" || state.lastType == \",\" ||\n      isOperatorChar.test(textAfter.charAt(0)) ||\n      /[,.]/.test(textAfter.charAt(0));\n  }\n\n  function expressionAllowed(stream, state, backUp) {\n    return state.tokenize == tokenBase &&\n      /^(?:operator|sof|keyword [bcd]|case|new|export|default|spread|[\\[{}\\(,;:]|=>)$/.test(state.lastType) ||\n      (state.lastType == \"quasi\" && /\\{\\s*$/.test(stream.string.slice(0, stream.pos - (backUp || 0))))\n  }\n\n  // Interface\n\n  return {\n    startState: function(basecolumn) {\n      var state = {\n        tokenize: tokenBase,\n        lastType: \"sof\",\n        cc: [],\n        lexical: new JSLexical((basecolumn || 0) - indentUnit, 0, \"block\", false),\n        localVars: parserConfig.localVars,\n        context: parserConfig.localVars && new Context(null, null, false),\n        indented: basecolumn || 0\n      };\n      if (parserConfig.globalVars && typeof parserConfig.globalVars == \"object\")\n        state.globalVars = parserConfig.globalVars;\n      return state;\n    },\n\n    token: function(stream, state) {\n      if (stream.sol()) {\n        if (!state.lexical.hasOwnProperty(\"align\"))\n          state.lexical.align = false;\n        state.indented = stream.indentation();\n        findFatArrow(stream, state);\n      }\n      if (state.tokenize != tokenComment && stream.eatSpace()) return null;\n      var style = state.tokenize(stream, state);\n      if (type == \"comment\") return style;\n      state.lastType = type == \"operator\" && (content == \"++\" || content == \"--\") ? \"incdec\" : type;\n      return parseJS(state, style, type, content, stream);\n    },\n\n    indent: function(state, textAfter) {\n      if (state.tokenize == tokenComment || state.tokenize == tokenQuasi) return CodeMirror.Pass;\n      if (state.tokenize != tokenBase) return 0;\n      var firstChar = textAfter && textAfter.charAt(0), lexical = state.lexical, top\n      // Kludge to prevent 'maybelse' from blocking lexical scope pops\n      if (!/^\\s*else\\b/.test(textAfter)) for (var i = state.cc.length - 1; i >= 0; --i) {\n        var c = state.cc[i];\n        if (c == poplex) lexical = lexical.prev;\n        else if (c != maybeelse && c != popcontext) break;\n      }\n      while ((lexical.type == \"stat\" || lexical.type == \"form\") &&\n             (firstChar == \"}\" || ((top = state.cc[state.cc.length - 1]) &&\n                                   (top == maybeoperatorComma || top == maybeoperatorNoComma) &&\n                                   !/^[,\\.=+\\-*:?[\\(]/.test(textAfter))))\n        lexical = lexical.prev;\n      if (statementIndent && lexical.type == \")\" && lexical.prev.type == \"stat\")\n        lexical = lexical.prev;\n      var type = lexical.type, closing = firstChar == type;\n\n      if (type == \"vardef\") return lexical.indented + (state.lastType == \"operator\" || state.lastType == \",\" ? lexical.info.length + 1 : 0);\n      else if (type == \"form\" && firstChar == \"{\") return lexical.indented;\n      else if (type == \"form\") return lexical.indented + indentUnit;\n      else if (type == \"stat\")\n        return lexical.indented + (isContinuedStatement(state, textAfter) ? statementIndent || indentUnit : 0);\n      else if (lexical.info == \"switch\" && !closing && parserConfig.doubleIndentSwitch != false)\n        return lexical.indented + (/^(?:case|default)\\b/.test(textAfter) ? indentUnit : 2 * indentUnit);\n      else if (lexical.align) return lexical.column + (closing ? 0 : 1);\n      else return lexical.indented + (closing ? 0 : indentUnit);\n    },\n\n    electricInput: /^\\s*(?:case .*?:|default:|\\{|\\})$/,\n    blockCommentStart: jsonMode ? null : \"/*\",\n    blockCommentEnd: jsonMode ? null : \"*/\",\n    blockCommentContinue: jsonMode ? null : \" * \",\n    lineComment: jsonMode ? null : \"//\",\n    fold: \"brace\",\n    closeBrackets: \"()[]{}''\\\"\\\"``\",\n\n    helperType: jsonMode ? \"json\" : \"javascript\",\n    jsonldMode: jsonldMode,\n    jsonMode: jsonMode,\n\n    expressionAllowed: expressionAllowed,\n\n    skipExpression: function(state) {\n      parseJS(state, \"atom\", \"atom\", \"true\", new CodeMirror.StringStream(\"\", 2, null))\n    }\n  };\n});\n\nCodeMirror.registerHelper(\"wordChars\", \"javascript\", /[\\w$]/);\n\nCodeMirror.defineMIME(\"text/javascript\", \"javascript\");\nCodeMirror.defineMIME(\"text/ecmascript\", \"javascript\");\nCodeMirror.defineMIME(\"application/javascript\", \"javascript\");\nCodeMirror.defineMIME(\"application/x-javascript\", \"javascript\");\nCodeMirror.defineMIME(\"application/ecmascript\", \"javascript\");\nCodeMirror.defineMIME(\"application/json\", { name: \"javascript\", json: true });\nCodeMirror.defineMIME(\"application/x-json\", { name: \"javascript\", json: true });\nCodeMirror.defineMIME(\"application/manifest+json\", { name: \"javascript\", json: true })\nCodeMirror.defineMIME(\"application/ld+json\", { name: \"javascript\", jsonld: true });\nCodeMirror.defineMIME(\"text/typescript\", { name: \"javascript\", typescript: true });\nCodeMirror.defineMIME(\"application/typescript\", { name: \"javascript\", typescript: true });\n\n});\n","import { Annotation, StateEffect, EditorSelection, codePointAt, codePointSize, fromCodePoint, Facet, combineConfig, StateField, Prec, Text, Transaction, MapMode, RangeValue, RangeSet, CharCategory } from '@codemirror/state';\nimport { Direction, logException, showTooltip, EditorView, ViewPlugin, getTooltip, Decoration, WidgetType, keymap } from '@codemirror/view';\nimport { syntaxTree, indentUnit } from '@codemirror/language';\n\n/**\nAn instance of this is passed to completion source functions.\n*/\nclass CompletionContext {\n    /**\n    Create a new completion context. (Mostly useful for testing\n    completion sources—in the editor, the extension will create\n    these for you.)\n    */\n    constructor(\n    /**\n    The editor state that the completion happens in.\n    */\n    state, \n    /**\n    The position at which the completion is happening.\n    */\n    pos, \n    /**\n    Indicates whether completion was activated explicitly, or\n    implicitly by typing. The usual way to respond to this is to\n    only return completions when either there is part of a\n    completable entity before the cursor, or `explicit` is true.\n    */\n    explicit, \n    /**\n    The editor view. May be undefined if the context was created\n    in a situation where there is no such view available, such as\n    in synchronous updates via\n    [`CompletionResult.update`](https://codemirror.net/6/docs/ref/#autocomplete.CompletionResult.update)\n    or when called by test code.\n    */\n    view) {\n        this.state = state;\n        this.pos = pos;\n        this.explicit = explicit;\n        this.view = view;\n        /**\n        @internal\n        */\n        this.abortListeners = [];\n        /**\n        @internal\n        */\n        this.abortOnDocChange = false;\n    }\n    /**\n    Get the extent, content, and (if there is a token) type of the\n    token before `this.pos`.\n    */\n    tokenBefore(types) {\n        let token = syntaxTree(this.state).resolveInner(this.pos, -1);\n        while (token && types.indexOf(token.name) < 0)\n            token = token.parent;\n        return token ? { from: token.from, to: this.pos,\n            text: this.state.sliceDoc(token.from, this.pos),\n            type: token.type } : null;\n    }\n    /**\n    Get the match of the given expression directly before the\n    cursor.\n    */\n    matchBefore(expr) {\n        let line = this.state.doc.lineAt(this.pos);\n        let start = Math.max(line.from, this.pos - 250);\n        let str = line.text.slice(start - line.from, this.pos - line.from);\n        let found = str.search(ensureAnchor(expr, false));\n        return found < 0 ? null : { from: start + found, to: this.pos, text: str.slice(found) };\n    }\n    /**\n    Yields true when the query has been aborted. Can be useful in\n    asynchronous queries to avoid doing work that will be ignored.\n    */\n    get aborted() { return this.abortListeners == null; }\n    /**\n    Allows you to register abort handlers, which will be called when\n    the query is\n    [aborted](https://codemirror.net/6/docs/ref/#autocomplete.CompletionContext.aborted).\n    \n    By default, running queries will not be aborted for regular\n    typing or backspacing, on the assumption that they are likely to\n    return a result with a\n    [`validFor`](https://codemirror.net/6/docs/ref/#autocomplete.CompletionResult.validFor) field that\n    allows the result to be used after all. Passing `onDocChange:\n    true` will cause this query to be aborted for any document\n    change.\n    */\n    addEventListener(type, listener, options) {\n        if (type == \"abort\" && this.abortListeners) {\n            this.abortListeners.push(listener);\n            if (options && options.onDocChange)\n                this.abortOnDocChange = true;\n        }\n    }\n}\nfunction toSet(chars) {\n    let flat = Object.keys(chars).join(\"\");\n    let words = /\\w/.test(flat);\n    if (words)\n        flat = flat.replace(/\\w/g, \"\");\n    return `[${words ? \"\\\\w\" : \"\"}${flat.replace(/[^\\w\\s]/g, \"\\\\$&\")}]`;\n}\nfunction prefixMatch(options) {\n    let first = Object.create(null), rest = Object.create(null);\n    for (let { label } of options) {\n        first[label[0]] = true;\n        for (let i = 1; i < label.length; i++)\n            rest[label[i]] = true;\n    }\n    let source = toSet(first) + toSet(rest) + \"*$\";\n    return [new RegExp(\"^\" + source), new RegExp(source)];\n}\n/**\nGiven a a fixed array of options, return an autocompleter that\ncompletes them.\n*/\nfunction completeFromList(list) {\n    let options = list.map(o => typeof o == \"string\" ? { label: o } : o);\n    let [validFor, match] = options.every(o => /^\\w+$/.test(o.label)) ? [/\\w*$/, /\\w+$/] : prefixMatch(options);\n    return (context) => {\n        let token = context.matchBefore(match);\n        return token || context.explicit ? { from: token ? token.from : context.pos, options, validFor } : null;\n    };\n}\n/**\nWrap the given completion source so that it will only fire when the\ncursor is in a syntax node with one of the given names.\n*/\nfunction ifIn(nodes, source) {\n    return (context) => {\n        for (let pos = syntaxTree(context.state).resolveInner(context.pos, -1); pos; pos = pos.parent) {\n            if (nodes.indexOf(pos.name) > -1)\n                return source(context);\n            if (pos.type.isTop)\n                break;\n        }\n        return null;\n    };\n}\n/**\nWrap the given completion source so that it will not fire when the\ncursor is in a syntax node with one of the given names.\n*/\nfunction ifNotIn(nodes, source) {\n    return (context) => {\n        for (let pos = syntaxTree(context.state).resolveInner(context.pos, -1); pos; pos = pos.parent) {\n            if (nodes.indexOf(pos.name) > -1)\n                return null;\n            if (pos.type.isTop)\n                break;\n        }\n        return source(context);\n    };\n}\nclass Option {\n    constructor(completion, source, match, score) {\n        this.completion = completion;\n        this.source = source;\n        this.match = match;\n        this.score = score;\n    }\n}\nfunction cur(state) { return state.selection.main.from; }\n// Make sure the given regexp has a $ at its end and, if `start` is\n// true, a ^ at its start.\nfunction ensureAnchor(expr, start) {\n    var _a;\n    let { source } = expr;\n    let addStart = start && source[0] != \"^\", addEnd = source[source.length - 1] != \"$\";\n    if (!addStart && !addEnd)\n        return expr;\n    return new RegExp(`${addStart ? \"^\" : \"\"}(?:${source})${addEnd ? \"$\" : \"\"}`, (_a = expr.flags) !== null && _a !== void 0 ? _a : (expr.ignoreCase ? \"i\" : \"\"));\n}\n/**\nThis annotation is added to transactions that are produced by\npicking a completion.\n*/\nconst pickedCompletion = /*@__PURE__*/Annotation.define();\n/**\nHelper function that returns a transaction spec which inserts a\ncompletion's text in the main selection range, and any other\nselection range that has the same text in front of it.\n*/\nfunction insertCompletionText(state, text, from, to) {\n    let { main } = state.selection, fromOff = from - main.from, toOff = to - main.from;\n    return Object.assign(Object.assign({}, state.changeByRange(range => {\n        if (range != main && from != to &&\n            state.sliceDoc(range.from + fromOff, range.from + toOff) != state.sliceDoc(from, to))\n            return { range };\n        let lines = state.toText(text);\n        return {\n            changes: { from: range.from + fromOff, to: to == main.from ? range.to : range.from + toOff, insert: lines },\n            range: EditorSelection.cursor(range.from + fromOff + lines.length)\n        };\n    })), { scrollIntoView: true, userEvent: \"input.complete\" });\n}\nconst SourceCache = /*@__PURE__*/new WeakMap();\nfunction asSource(source) {\n    if (!Array.isArray(source))\n        return source;\n    let known = SourceCache.get(source);\n    if (!known)\n        SourceCache.set(source, known = completeFromList(source));\n    return known;\n}\nconst startCompletionEffect = /*@__PURE__*/StateEffect.define();\nconst closeCompletionEffect = /*@__PURE__*/StateEffect.define();\n\n// A pattern matcher for fuzzy completion matching. Create an instance\n// once for a pattern, and then use that to match any number of\n// completions.\nclass FuzzyMatcher {\n    constructor(pattern) {\n        this.pattern = pattern;\n        this.chars = [];\n        this.folded = [];\n        // Buffers reused by calls to `match` to track matched character\n        // positions.\n        this.any = [];\n        this.precise = [];\n        this.byWord = [];\n        this.score = 0;\n        this.matched = [];\n        for (let p = 0; p < pattern.length;) {\n            let char = codePointAt(pattern, p), size = codePointSize(char);\n            this.chars.push(char);\n            let part = pattern.slice(p, p + size), upper = part.toUpperCase();\n            this.folded.push(codePointAt(upper == part ? part.toLowerCase() : upper, 0));\n            p += size;\n        }\n        this.astral = pattern.length != this.chars.length;\n    }\n    ret(score, matched) {\n        this.score = score;\n        this.matched = matched;\n        return this;\n    }\n    // Matches a given word (completion) against the pattern (input).\n    // Will return a boolean indicating whether there was a match and,\n    // on success, set `this.score` to the score, `this.matched` to an\n    // array of `from, to` pairs indicating the matched parts of `word`.\n    //\n    // The score is a number that is more negative the worse the match\n    // is. See `Penalty` above.\n    match(word) {\n        if (this.pattern.length == 0)\n            return this.ret(-100 /* Penalty.NotFull */, []);\n        if (word.length < this.pattern.length)\n            return null;\n        let { chars, folded, any, precise, byWord } = this;\n        // For single-character queries, only match when they occur right\n        // at the start\n        if (chars.length == 1) {\n            let first = codePointAt(word, 0), firstSize = codePointSize(first);\n            let score = firstSize == word.length ? 0 : -100 /* Penalty.NotFull */;\n            if (first == chars[0]) ;\n            else if (first == folded[0])\n                score += -200 /* Penalty.CaseFold */;\n            else\n                return null;\n            return this.ret(score, [0, firstSize]);\n        }\n        let direct = word.indexOf(this.pattern);\n        if (direct == 0)\n            return this.ret(word.length == this.pattern.length ? 0 : -100 /* Penalty.NotFull */, [0, this.pattern.length]);\n        let len = chars.length, anyTo = 0;\n        if (direct < 0) {\n            for (let i = 0, e = Math.min(word.length, 200); i < e && anyTo < len;) {\n                let next = codePointAt(word, i);\n                if (next == chars[anyTo] || next == folded[anyTo])\n                    any[anyTo++] = i;\n                i += codePointSize(next);\n            }\n            // No match, exit immediately\n            if (anyTo < len)\n                return null;\n        }\n        // This tracks the extent of the precise (non-folded, not\n        // necessarily adjacent) match\n        let preciseTo = 0;\n        // Tracks whether there is a match that hits only characters that\n        // appear to be starting words. `byWordFolded` is set to true when\n        // a case folded character is encountered in such a match\n        let byWordTo = 0, byWordFolded = false;\n        // If we've found a partial adjacent match, these track its state\n        let adjacentTo = 0, adjacentStart = -1, adjacentEnd = -1;\n        let hasLower = /[a-z]/.test(word), wordAdjacent = true;\n        // Go over the option's text, scanning for the various kinds of matches\n        for (let i = 0, e = Math.min(word.length, 200), prevType = 0 /* Tp.NonWord */; i < e && byWordTo < len;) {\n            let next = codePointAt(word, i);\n            if (direct < 0) {\n                if (preciseTo < len && next == chars[preciseTo])\n                    precise[preciseTo++] = i;\n                if (adjacentTo < len) {\n                    if (next == chars[adjacentTo] || next == folded[adjacentTo]) {\n                        if (adjacentTo == 0)\n                            adjacentStart = i;\n                        adjacentEnd = i + 1;\n                        adjacentTo++;\n                    }\n                    else {\n                        adjacentTo = 0;\n                    }\n                }\n            }\n            let ch, type = next < 0xff\n                ? (next >= 48 && next <= 57 || next >= 97 && next <= 122 ? 2 /* Tp.Lower */ : next >= 65 && next <= 90 ? 1 /* Tp.Upper */ : 0 /* Tp.NonWord */)\n                : ((ch = fromCodePoint(next)) != ch.toLowerCase() ? 1 /* Tp.Upper */ : ch != ch.toUpperCase() ? 2 /* Tp.Lower */ : 0 /* Tp.NonWord */);\n            if (!i || type == 1 /* Tp.Upper */ && hasLower || prevType == 0 /* Tp.NonWord */ && type != 0 /* Tp.NonWord */) {\n                if (chars[byWordTo] == next || (folded[byWordTo] == next && (byWordFolded = true)))\n                    byWord[byWordTo++] = i;\n                else if (byWord.length)\n                    wordAdjacent = false;\n            }\n            prevType = type;\n            i += codePointSize(next);\n        }\n        if (byWordTo == len && byWord[0] == 0 && wordAdjacent)\n            return this.result(-100 /* Penalty.ByWord */ + (byWordFolded ? -200 /* Penalty.CaseFold */ : 0), byWord, word);\n        if (adjacentTo == len && adjacentStart == 0)\n            return this.ret(-200 /* Penalty.CaseFold */ - word.length + (adjacentEnd == word.length ? 0 : -100 /* Penalty.NotFull */), [0, adjacentEnd]);\n        if (direct > -1)\n            return this.ret(-700 /* Penalty.NotStart */ - word.length, [direct, direct + this.pattern.length]);\n        if (adjacentTo == len)\n            return this.ret(-200 /* Penalty.CaseFold */ + -700 /* Penalty.NotStart */ - word.length, [adjacentStart, adjacentEnd]);\n        if (byWordTo == len)\n            return this.result(-100 /* Penalty.ByWord */ + (byWordFolded ? -200 /* Penalty.CaseFold */ : 0) + -700 /* Penalty.NotStart */ +\n                (wordAdjacent ? 0 : -1100 /* Penalty.Gap */), byWord, word);\n        return chars.length == 2 ? null\n            : this.result((any[0] ? -700 /* Penalty.NotStart */ : 0) + -200 /* Penalty.CaseFold */ + -1100 /* Penalty.Gap */, any, word);\n    }\n    result(score, positions, word) {\n        let result = [], i = 0;\n        for (let pos of positions) {\n            let to = pos + (this.astral ? codePointSize(codePointAt(word, pos)) : 1);\n            if (i && result[i - 1] == pos)\n                result[i - 1] = to;\n            else {\n                result[i++] = pos;\n                result[i++] = to;\n            }\n        }\n        return this.ret(score - word.length, result);\n    }\n}\nclass StrictMatcher {\n    constructor(pattern) {\n        this.pattern = pattern;\n        this.matched = [];\n        this.score = 0;\n        this.folded = pattern.toLowerCase();\n    }\n    match(word) {\n        if (word.length < this.pattern.length)\n            return null;\n        let start = word.slice(0, this.pattern.length);\n        let match = start == this.pattern ? 0 : start.toLowerCase() == this.folded ? -200 /* Penalty.CaseFold */ : null;\n        if (match == null)\n            return null;\n        this.matched = [0, start.length];\n        this.score = match + (word.length == this.pattern.length ? 0 : -100 /* Penalty.NotFull */);\n        return this;\n    }\n}\n\nconst completionConfig = /*@__PURE__*/Facet.define({\n    combine(configs) {\n        return combineConfig(configs, {\n            activateOnTyping: true,\n            activateOnCompletion: () => false,\n            activateOnTypingDelay: 100,\n            selectOnOpen: true,\n            override: null,\n            closeOnBlur: true,\n            maxRenderedOptions: 100,\n            defaultKeymap: true,\n            tooltipClass: () => \"\",\n            optionClass: () => \"\",\n            aboveCursor: false,\n            icons: true,\n            addToOptions: [],\n            positionInfo: defaultPositionInfo,\n            filterStrict: false,\n            compareCompletions: (a, b) => a.label.localeCompare(b.label),\n            interactionDelay: 75,\n            updateSyncTime: 100\n        }, {\n            defaultKeymap: (a, b) => a && b,\n            closeOnBlur: (a, b) => a && b,\n            icons: (a, b) => a && b,\n            tooltipClass: (a, b) => c => joinClass(a(c), b(c)),\n            optionClass: (a, b) => c => joinClass(a(c), b(c)),\n            addToOptions: (a, b) => a.concat(b),\n            filterStrict: (a, b) => a || b,\n        });\n    }\n});\nfunction joinClass(a, b) {\n    return a ? b ? a + \" \" + b : a : b;\n}\nfunction defaultPositionInfo(view, list, option, info, space, tooltip) {\n    let rtl = view.textDirection == Direction.RTL, left = rtl, narrow = false;\n    let side = \"top\", offset, maxWidth;\n    let spaceLeft = list.left - space.left, spaceRight = space.right - list.right;\n    let infoWidth = info.right - info.left, infoHeight = info.bottom - info.top;\n    if (left && spaceLeft < Math.min(infoWidth, spaceRight))\n        left = false;\n    else if (!left && spaceRight < Math.min(infoWidth, spaceLeft))\n        left = true;\n    if (infoWidth <= (left ? spaceLeft : spaceRight)) {\n        offset = Math.max(space.top, Math.min(option.top, space.bottom - infoHeight)) - list.top;\n        maxWidth = Math.min(400 /* Info.Width */, left ? spaceLeft : spaceRight);\n    }\n    else {\n        narrow = true;\n        maxWidth = Math.min(400 /* Info.Width */, (rtl ? list.right : space.right - list.left) - 30 /* Info.Margin */);\n        let spaceBelow = space.bottom - list.bottom;\n        if (spaceBelow >= infoHeight || spaceBelow > list.top) { // Below the completion\n            offset = option.bottom - list.top;\n        }\n        else { // Above it\n            side = \"bottom\";\n            offset = list.bottom - option.top;\n        }\n    }\n    let scaleY = (list.bottom - list.top) / tooltip.offsetHeight;\n    let scaleX = (list.right - list.left) / tooltip.offsetWidth;\n    return {\n        style: `${side}: ${offset / scaleY}px; max-width: ${maxWidth / scaleX}px`,\n        class: \"cm-completionInfo-\" + (narrow ? (rtl ? \"left-narrow\" : \"right-narrow\") : left ? \"left\" : \"right\")\n    };\n}\n\nfunction optionContent(config) {\n    let content = config.addToOptions.slice();\n    if (config.icons)\n        content.push({\n            render(completion) {\n                let icon = document.createElement(\"div\");\n                icon.classList.add(\"cm-completionIcon\");\n                if (completion.type)\n                    icon.classList.add(...completion.type.split(/\\s+/g).map(cls => \"cm-completionIcon-\" + cls));\n                icon.setAttribute(\"aria-hidden\", \"true\");\n                return icon;\n            },\n            position: 20\n        });\n    content.push({\n        render(completion, _s, _v, match) {\n            let labelElt = document.createElement(\"span\");\n            labelElt.className = \"cm-completionLabel\";\n            let label = completion.displayLabel || completion.label, off = 0;\n            for (let j = 0; j < match.length;) {\n                let from = match[j++], to = match[j++];\n                if (from > off)\n                    labelElt.appendChild(document.createTextNode(label.slice(off, from)));\n                let span = labelElt.appendChild(document.createElement(\"span\"));\n                span.appendChild(document.createTextNode(label.slice(from, to)));\n                span.className = \"cm-completionMatchedText\";\n                off = to;\n            }\n            if (off < label.length)\n                labelElt.appendChild(document.createTextNode(label.slice(off)));\n            return labelElt;\n        },\n        position: 50\n    }, {\n        render(completion) {\n            if (!completion.detail)\n                return null;\n            let detailElt = document.createElement(\"span\");\n            detailElt.className = \"cm-completionDetail\";\n            detailElt.textContent = completion.detail;\n            return detailElt;\n        },\n        position: 80\n    });\n    return content.sort((a, b) => a.position - b.position).map(a => a.render);\n}\nfunction rangeAroundSelected(total, selected, max) {\n    if (total <= max)\n        return { from: 0, to: total };\n    if (selected < 0)\n        selected = 0;\n    if (selected <= (total >> 1)) {\n        let off = Math.floor(selected / max);\n        return { from: off * max, to: (off + 1) * max };\n    }\n    let off = Math.floor((total - selected) / max);\n    return { from: total - (off + 1) * max, to: total - off * max };\n}\nclass CompletionTooltip {\n    constructor(view, stateField, applyCompletion) {\n        this.view = view;\n        this.stateField = stateField;\n        this.applyCompletion = applyCompletion;\n        this.info = null;\n        this.infoDestroy = null;\n        this.placeInfoReq = {\n            read: () => this.measureInfo(),\n            write: (pos) => this.placeInfo(pos),\n            key: this\n        };\n        this.space = null;\n        this.currentClass = \"\";\n        let cState = view.state.field(stateField);\n        let { options, selected } = cState.open;\n        let config = view.state.facet(completionConfig);\n        this.optionContent = optionContent(config);\n        this.optionClass = config.optionClass;\n        this.tooltipClass = config.tooltipClass;\n        this.range = rangeAroundSelected(options.length, selected, config.maxRenderedOptions);\n        this.dom = document.createElement(\"div\");\n        this.dom.className = \"cm-tooltip-autocomplete\";\n        this.updateTooltipClass(view.state);\n        this.dom.addEventListener(\"mousedown\", (e) => {\n            let { options } = view.state.field(stateField).open;\n            for (let dom = e.target, match; dom && dom != this.dom; dom = dom.parentNode) {\n                if (dom.nodeName == \"LI\" && (match = /-(\\d+)$/.exec(dom.id)) && +match[1] < options.length) {\n                    this.applyCompletion(view, options[+match[1]]);\n                    e.preventDefault();\n                    return;\n                }\n            }\n        });\n        this.dom.addEventListener(\"focusout\", (e) => {\n            let state = view.state.field(this.stateField, false);\n            if (state && state.tooltip && view.state.facet(completionConfig).closeOnBlur &&\n                e.relatedTarget != view.contentDOM)\n                view.dispatch({ effects: closeCompletionEffect.of(null) });\n        });\n        this.showOptions(options, cState.id);\n    }\n    mount() { this.updateSel(); }\n    showOptions(options, id) {\n        if (this.list)\n            this.list.remove();\n        this.list = this.dom.appendChild(this.createListBox(options, id, this.range));\n        this.list.addEventListener(\"scroll\", () => {\n            if (this.info)\n                this.view.requestMeasure(this.placeInfoReq);\n        });\n    }\n    update(update) {\n        var _a;\n        let cState = update.state.field(this.stateField);\n        let prevState = update.startState.field(this.stateField);\n        this.updateTooltipClass(update.state);\n        if (cState != prevState) {\n            let { options, selected, disabled } = cState.open;\n            if (!prevState.open || prevState.open.options != options) {\n                this.range = rangeAroundSelected(options.length, selected, update.state.facet(completionConfig).maxRenderedOptions);\n                this.showOptions(options, cState.id);\n            }\n            this.updateSel();\n            if (disabled != ((_a = prevState.open) === null || _a === void 0 ? void 0 : _a.disabled))\n                this.dom.classList.toggle(\"cm-tooltip-autocomplete-disabled\", !!disabled);\n        }\n    }\n    updateTooltipClass(state) {\n        let cls = this.tooltipClass(state);\n        if (cls != this.currentClass) {\n            for (let c of this.currentClass.split(\" \"))\n                if (c)\n                    this.dom.classList.remove(c);\n            for (let c of cls.split(\" \"))\n                if (c)\n                    this.dom.classList.add(c);\n            this.currentClass = cls;\n        }\n    }\n    positioned(space) {\n        this.space = space;\n        if (this.info)\n            this.view.requestMeasure(this.placeInfoReq);\n    }\n    updateSel() {\n        let cState = this.view.state.field(this.stateField), open = cState.open;\n        if (open.selected > -1 && open.selected < this.range.from || open.selected >= this.range.to) {\n            this.range = rangeAroundSelected(open.options.length, open.selected, this.view.state.facet(completionConfig).maxRenderedOptions);\n            this.showOptions(open.options, cState.id);\n        }\n        if (this.updateSelectedOption(open.selected)) {\n            this.destroyInfo();\n            let { completion } = open.options[open.selected];\n            let { info } = completion;\n            if (!info)\n                return;\n            let infoResult = typeof info === \"string\" ? document.createTextNode(info) : info(completion);\n            if (!infoResult)\n                return;\n            if (\"then\" in infoResult) {\n                infoResult.then(obj => {\n                    if (obj && this.view.state.field(this.stateField, false) == cState)\n                        this.addInfoPane(obj, completion);\n                }).catch(e => logException(this.view.state, e, \"completion info\"));\n            }\n            else {\n                this.addInfoPane(infoResult, completion);\n            }\n        }\n    }\n    addInfoPane(content, completion) {\n        this.destroyInfo();\n        let wrap = this.info = document.createElement(\"div\");\n        wrap.className = \"cm-tooltip cm-completionInfo\";\n        if (content.nodeType != null) {\n            wrap.appendChild(content);\n            this.infoDestroy = null;\n        }\n        else {\n            let { dom, destroy } = content;\n            wrap.appendChild(dom);\n            this.infoDestroy = destroy || null;\n        }\n        this.dom.appendChild(wrap);\n        this.view.requestMeasure(this.placeInfoReq);\n    }\n    updateSelectedOption(selected) {\n        let set = null;\n        for (let opt = this.list.firstChild, i = this.range.from; opt; opt = opt.nextSibling, i++) {\n            if (opt.nodeName != \"LI\" || !opt.id) {\n                i--; // A section header\n            }\n            else if (i == selected) {\n                if (!opt.hasAttribute(\"aria-selected\")) {\n                    opt.setAttribute(\"aria-selected\", \"true\");\n                    set = opt;\n                }\n            }\n            else {\n                if (opt.hasAttribute(\"aria-selected\"))\n                    opt.removeAttribute(\"aria-selected\");\n            }\n        }\n        if (set)\n            scrollIntoView(this.list, set);\n        return set;\n    }\n    measureInfo() {\n        let sel = this.dom.querySelector(\"[aria-selected]\");\n        if (!sel || !this.info)\n            return null;\n        let listRect = this.dom.getBoundingClientRect();\n        let infoRect = this.info.getBoundingClientRect();\n        let selRect = sel.getBoundingClientRect();\n        let space = this.space;\n        if (!space) {\n            let win = this.dom.ownerDocument.defaultView || window;\n            space = { left: 0, top: 0, right: win.innerWidth, bottom: win.innerHeight };\n        }\n        if (selRect.top > Math.min(space.bottom, listRect.bottom) - 10 ||\n            selRect.bottom < Math.max(space.top, listRect.top) + 10)\n            return null;\n        return this.view.state.facet(completionConfig).positionInfo(this.view, listRect, selRect, infoRect, space, this.dom);\n    }\n    placeInfo(pos) {\n        if (this.info) {\n            if (pos) {\n                if (pos.style)\n                    this.info.style.cssText = pos.style;\n                this.info.className = \"cm-tooltip cm-completionInfo \" + (pos.class || \"\");\n            }\n            else {\n                this.info.style.cssText = \"top: -1e6px\";\n            }\n        }\n    }\n    createListBox(options, id, range) {\n        const ul = document.createElement(\"ul\");\n        ul.id = id;\n        ul.setAttribute(\"role\", \"listbox\");\n        ul.setAttribute(\"aria-expanded\", \"true\");\n        ul.setAttribute(\"aria-label\", this.view.state.phrase(\"Completions\"));\n        let curSection = null;\n        for (let i = range.from; i < range.to; i++) {\n            let { completion, match } = options[i], { section } = completion;\n            if (section) {\n                let name = typeof section == \"string\" ? section : section.name;\n                if (name != curSection && (i > range.from || range.from == 0)) {\n                    curSection = name;\n                    if (typeof section != \"string\" && section.header) {\n                        ul.appendChild(section.header(section));\n                    }\n                    else {\n                        let header = ul.appendChild(document.createElement(\"completion-section\"));\n                        header.textContent = name;\n                    }\n                }\n            }\n            const li = ul.appendChild(document.createElement(\"li\"));\n            li.id = id + \"-\" + i;\n            li.setAttribute(\"role\", \"option\");\n            let cls = this.optionClass(completion);\n            if (cls)\n                li.className = cls;\n            for (let source of this.optionContent) {\n                let node = source(completion, this.view.state, this.view, match);\n                if (node)\n                    li.appendChild(node);\n            }\n        }\n        if (range.from)\n            ul.classList.add(\"cm-completionListIncompleteTop\");\n        if (range.to < options.length)\n            ul.classList.add(\"cm-completionListIncompleteBottom\");\n        return ul;\n    }\n    destroyInfo() {\n        if (this.info) {\n            if (this.infoDestroy)\n                this.infoDestroy();\n            this.info.remove();\n            this.info = null;\n        }\n    }\n    destroy() {\n        this.destroyInfo();\n    }\n}\nfunction completionTooltip(stateField, applyCompletion) {\n    return (view) => new CompletionTooltip(view, stateField, applyCompletion);\n}\nfunction scrollIntoView(container, element) {\n    let parent = container.getBoundingClientRect();\n    let self = element.getBoundingClientRect();\n    let scaleY = parent.height / container.offsetHeight;\n    if (self.top < parent.top)\n        container.scrollTop -= (parent.top - self.top) / scaleY;\n    else if (self.bottom > parent.bottom)\n        container.scrollTop += (self.bottom - parent.bottom) / scaleY;\n}\n\n// Used to pick a preferred option when two options with the same\n// label occur in the result.\nfunction score(option) {\n    return (option.boost || 0) * 100 + (option.apply ? 10 : 0) + (option.info ? 5 : 0) +\n        (option.type ? 1 : 0);\n}\nfunction sortOptions(active, state) {\n    let options = [];\n    let sections = null;\n    let addOption = (option) => {\n        options.push(option);\n        let { section } = option.completion;\n        if (section) {\n            if (!sections)\n                sections = [];\n            let name = typeof section == \"string\" ? section : section.name;\n            if (!sections.some(s => s.name == name))\n                sections.push(typeof section == \"string\" ? { name } : section);\n        }\n    };\n    let conf = state.facet(completionConfig);\n    for (let a of active)\n        if (a.hasResult()) {\n            let getMatch = a.result.getMatch;\n            if (a.result.filter === false) {\n                for (let option of a.result.options) {\n                    addOption(new Option(option, a.source, getMatch ? getMatch(option) : [], 1e9 - options.length));\n                }\n            }\n            else {\n                let pattern = state.sliceDoc(a.from, a.to), match;\n                let matcher = conf.filterStrict ? new StrictMatcher(pattern) : new FuzzyMatcher(pattern);\n                for (let option of a.result.options)\n                    if (match = matcher.match(option.label)) {\n                        let matched = !option.displayLabel ? match.matched : getMatch ? getMatch(option, match.matched) : [];\n                        addOption(new Option(option, a.source, matched, match.score + (option.boost || 0)));\n                    }\n            }\n        }\n    if (sections) {\n        let sectionOrder = Object.create(null), pos = 0;\n        let cmp = (a, b) => { var _a, _b; return ((_a = a.rank) !== null && _a !== void 0 ? _a : 1e9) - ((_b = b.rank) !== null && _b !== void 0 ? _b : 1e9) || (a.name < b.name ? -1 : 1); };\n        for (let s of sections.sort(cmp)) {\n            pos -= 1e5;\n            sectionOrder[s.name] = pos;\n        }\n        for (let option of options) {\n            let { section } = option.completion;\n            if (section)\n                option.score += sectionOrder[typeof section == \"string\" ? section : section.name];\n        }\n    }\n    let result = [], prev = null;\n    let compare = conf.compareCompletions;\n    for (let opt of options.sort((a, b) => (b.score - a.score) || compare(a.completion, b.completion))) {\n        let cur = opt.completion;\n        if (!prev || prev.label != cur.label || prev.detail != cur.detail ||\n            (prev.type != null && cur.type != null && prev.type != cur.type) ||\n            prev.apply != cur.apply || prev.boost != cur.boost)\n            result.push(opt);\n        else if (score(opt.completion) > score(prev))\n            result[result.length - 1] = opt;\n        prev = opt.completion;\n    }\n    return result;\n}\nclass CompletionDialog {\n    constructor(options, attrs, tooltip, timestamp, selected, disabled) {\n        this.options = options;\n        this.attrs = attrs;\n        this.tooltip = tooltip;\n        this.timestamp = timestamp;\n        this.selected = selected;\n        this.disabled = disabled;\n    }\n    setSelected(selected, id) {\n        return selected == this.selected || selected >= this.options.length ? this\n            : new CompletionDialog(this.options, makeAttrs(id, selected), this.tooltip, this.timestamp, selected, this.disabled);\n    }\n    static build(active, state, id, prev, conf, didSetActive) {\n        if (prev && !didSetActive && active.some(s => s.isPending))\n            return prev.setDisabled();\n        let options = sortOptions(active, state);\n        if (!options.length)\n            return prev && active.some(a => a.isPending) ? prev.setDisabled() : null;\n        let selected = state.facet(completionConfig).selectOnOpen ? 0 : -1;\n        if (prev && prev.selected != selected && prev.selected != -1) {\n            let selectedValue = prev.options[prev.selected].completion;\n            for (let i = 0; i < options.length; i++)\n                if (options[i].completion == selectedValue) {\n                    selected = i;\n                    break;\n                }\n        }\n        return new CompletionDialog(options, makeAttrs(id, selected), {\n            pos: active.reduce((a, b) => b.hasResult() ? Math.min(a, b.from) : a, 1e8),\n            create: createTooltip,\n            above: conf.aboveCursor,\n        }, prev ? prev.timestamp : Date.now(), selected, false);\n    }\n    map(changes) {\n        return new CompletionDialog(this.options, this.attrs, Object.assign(Object.assign({}, this.tooltip), { pos: changes.mapPos(this.tooltip.pos) }), this.timestamp, this.selected, this.disabled);\n    }\n    setDisabled() {\n        return new CompletionDialog(this.options, this.attrs, this.tooltip, this.timestamp, this.selected, true);\n    }\n}\nclass CompletionState {\n    constructor(active, id, open) {\n        this.active = active;\n        this.id = id;\n        this.open = open;\n    }\n    static start() {\n        return new CompletionState(none, \"cm-ac-\" + Math.floor(Math.random() * 2e6).toString(36), null);\n    }\n    update(tr) {\n        let { state } = tr, conf = state.facet(completionConfig);\n        let sources = conf.override ||\n            state.languageDataAt(\"autocomplete\", cur(state)).map(asSource);\n        let active = sources.map(source => {\n            let value = this.active.find(s => s.source == source) ||\n                new ActiveSource(source, this.active.some(a => a.state != 0 /* State.Inactive */) ? 1 /* State.Pending */ : 0 /* State.Inactive */);\n            return value.update(tr, conf);\n        });\n        if (active.length == this.active.length && active.every((a, i) => a == this.active[i]))\n            active = this.active;\n        let open = this.open, didSet = tr.effects.some(e => e.is(setActiveEffect));\n        if (open && tr.docChanged)\n            open = open.map(tr.changes);\n        if (tr.selection || active.some(a => a.hasResult() && tr.changes.touchesRange(a.from, a.to)) ||\n            !sameResults(active, this.active) || didSet)\n            open = CompletionDialog.build(active, state, this.id, open, conf, didSet);\n        else if (open && open.disabled && !active.some(a => a.isPending))\n            open = null;\n        if (!open && active.every(a => !a.isPending) && active.some(a => a.hasResult()))\n            active = active.map(a => a.hasResult() ? new ActiveSource(a.source, 0 /* State.Inactive */) : a);\n        for (let effect of tr.effects)\n            if (effect.is(setSelectedEffect))\n                open = open && open.setSelected(effect.value, this.id);\n        return active == this.active && open == this.open ? this : new CompletionState(active, this.id, open);\n    }\n    get tooltip() { return this.open ? this.open.tooltip : null; }\n    get attrs() { return this.open ? this.open.attrs : this.active.length ? baseAttrs : noAttrs; }\n}\nfunction sameResults(a, b) {\n    if (a == b)\n        return true;\n    for (let iA = 0, iB = 0;;) {\n        while (iA < a.length && !a[iA].hasResult())\n            iA++;\n        while (iB < b.length && !b[iB].hasResult())\n            iB++;\n        let endA = iA == a.length, endB = iB == b.length;\n        if (endA || endB)\n            return endA == endB;\n        if (a[iA++].result != b[iB++].result)\n            return false;\n    }\n}\nconst baseAttrs = {\n    \"aria-autocomplete\": \"list\"\n};\nconst noAttrs = {};\nfunction makeAttrs(id, selected) {\n    let result = {\n        \"aria-autocomplete\": \"list\",\n        \"aria-haspopup\": \"listbox\",\n        \"aria-controls\": id\n    };\n    if (selected > -1)\n        result[\"aria-activedescendant\"] = id + \"-\" + selected;\n    return result;\n}\nconst none = [];\nfunction getUpdateType(tr, conf) {\n    if (tr.isUserEvent(\"input.complete\")) {\n        let completion = tr.annotation(pickedCompletion);\n        if (completion && conf.activateOnCompletion(completion))\n            return 4 /* UpdateType.Activate */ | 8 /* UpdateType.Reset */;\n    }\n    let typing = tr.isUserEvent(\"input.type\");\n    return typing && conf.activateOnTyping ? 4 /* UpdateType.Activate */ | 1 /* UpdateType.Typing */\n        : typing ? 1 /* UpdateType.Typing */\n            : tr.isUserEvent(\"delete.backward\") ? 2 /* UpdateType.Backspacing */\n                : tr.selection ? 8 /* UpdateType.Reset */\n                    : tr.docChanged ? 16 /* UpdateType.ResetIfTouching */ : 0 /* UpdateType.None */;\n}\nclass ActiveSource {\n    constructor(source, state, explicit = false) {\n        this.source = source;\n        this.state = state;\n        this.explicit = explicit;\n    }\n    hasResult() { return false; }\n    get isPending() { return this.state == 1 /* State.Pending */; }\n    update(tr, conf) {\n        let type = getUpdateType(tr, conf), value = this;\n        if ((type & 8 /* UpdateType.Reset */) || (type & 16 /* UpdateType.ResetIfTouching */) && this.touches(tr))\n            value = new ActiveSource(value.source, 0 /* State.Inactive */);\n        if ((type & 4 /* UpdateType.Activate */) && value.state == 0 /* State.Inactive */)\n            value = new ActiveSource(this.source, 1 /* State.Pending */);\n        value = value.updateFor(tr, type);\n        for (let effect of tr.effects) {\n            if (effect.is(startCompletionEffect))\n                value = new ActiveSource(value.source, 1 /* State.Pending */, effect.value);\n            else if (effect.is(closeCompletionEffect))\n                value = new ActiveSource(value.source, 0 /* State.Inactive */);\n            else if (effect.is(setActiveEffect))\n                for (let active of effect.value)\n                    if (active.source == value.source)\n                        value = active;\n        }\n        return value;\n    }\n    updateFor(tr, type) { return this.map(tr.changes); }\n    map(changes) { return this; }\n    touches(tr) {\n        return tr.changes.touchesRange(cur(tr.state));\n    }\n}\nclass ActiveResult extends ActiveSource {\n    constructor(source, explicit, limit, result, from, to) {\n        super(source, 3 /* State.Result */, explicit);\n        this.limit = limit;\n        this.result = result;\n        this.from = from;\n        this.to = to;\n    }\n    hasResult() { return true; }\n    updateFor(tr, type) {\n        var _a;\n        if (!(type & 3 /* UpdateType.SimpleInteraction */))\n            return this.map(tr.changes);\n        let result = this.result;\n        if (result.map && !tr.changes.empty)\n            result = result.map(result, tr.changes);\n        let from = tr.changes.mapPos(this.from), to = tr.changes.mapPos(this.to, 1);\n        let pos = cur(tr.state);\n        if (pos > to || !result ||\n            (type & 2 /* UpdateType.Backspacing */) && (cur(tr.startState) == this.from || pos < this.limit))\n            return new ActiveSource(this.source, type & 4 /* UpdateType.Activate */ ? 1 /* State.Pending */ : 0 /* State.Inactive */);\n        let limit = tr.changes.mapPos(this.limit);\n        if (checkValid(result.validFor, tr.state, from, to))\n            return new ActiveResult(this.source, this.explicit, limit, result, from, to);\n        if (result.update &&\n            (result = result.update(result, from, to, new CompletionContext(tr.state, pos, false))))\n            return new ActiveResult(this.source, this.explicit, limit, result, result.from, (_a = result.to) !== null && _a !== void 0 ? _a : cur(tr.state));\n        return new ActiveSource(this.source, 1 /* State.Pending */, this.explicit);\n    }\n    map(mapping) {\n        if (mapping.empty)\n            return this;\n        let result = this.result.map ? this.result.map(this.result, mapping) : this.result;\n        if (!result)\n            return new ActiveSource(this.source, 0 /* State.Inactive */);\n        return new ActiveResult(this.source, this.explicit, mapping.mapPos(this.limit), this.result, mapping.mapPos(this.from), mapping.mapPos(this.to, 1));\n    }\n    touches(tr) {\n        return tr.changes.touchesRange(this.from, this.to);\n    }\n}\nfunction checkValid(validFor, state, from, to) {\n    if (!validFor)\n        return false;\n    let text = state.sliceDoc(from, to);\n    return typeof validFor == \"function\" ? validFor(text, from, to, state) : ensureAnchor(validFor, true).test(text);\n}\nconst setActiveEffect = /*@__PURE__*/StateEffect.define({\n    map(sources, mapping) { return sources.map(s => s.map(mapping)); }\n});\nconst setSelectedEffect = /*@__PURE__*/StateEffect.define();\nconst completionState = /*@__PURE__*/StateField.define({\n    create() { return CompletionState.start(); },\n    update(value, tr) { return value.update(tr); },\n    provide: f => [\n        showTooltip.from(f, val => val.tooltip),\n        EditorView.contentAttributes.from(f, state => state.attrs)\n    ]\n});\nfunction applyCompletion(view, option) {\n    const apply = option.completion.apply || option.completion.label;\n    let result = view.state.field(completionState).active.find(a => a.source == option.source);\n    if (!(result instanceof ActiveResult))\n        return false;\n    if (typeof apply == \"string\")\n        view.dispatch(Object.assign(Object.assign({}, insertCompletionText(view.state, apply, result.from, result.to)), { annotations: pickedCompletion.of(option.completion) }));\n    else\n        apply(view, option.completion, result.from, result.to);\n    return true;\n}\nconst createTooltip = /*@__PURE__*/completionTooltip(completionState, applyCompletion);\n\n/**\nReturns a command that moves the completion selection forward or\nbackward by the given amount.\n*/\nfunction moveCompletionSelection(forward, by = \"option\") {\n    return (view) => {\n        let cState = view.state.field(completionState, false);\n        if (!cState || !cState.open || cState.open.disabled ||\n            Date.now() - cState.open.timestamp < view.state.facet(completionConfig).interactionDelay)\n            return false;\n        let step = 1, tooltip;\n        if (by == \"page\" && (tooltip = getTooltip(view, cState.open.tooltip)))\n            step = Math.max(2, Math.floor(tooltip.dom.offsetHeight /\n                tooltip.dom.querySelector(\"li\").offsetHeight) - 1);\n        let { length } = cState.open.options;\n        let selected = cState.open.selected > -1 ? cState.open.selected + step * (forward ? 1 : -1) : forward ? 0 : length - 1;\n        if (selected < 0)\n            selected = by == \"page\" ? 0 : length - 1;\n        else if (selected >= length)\n            selected = by == \"page\" ? length - 1 : 0;\n        view.dispatch({ effects: setSelectedEffect.of(selected) });\n        return true;\n    };\n}\n/**\nAccept the current completion.\n*/\nconst acceptCompletion = (view) => {\n    let cState = view.state.field(completionState, false);\n    if (view.state.readOnly || !cState || !cState.open || cState.open.selected < 0 || cState.open.disabled ||\n        Date.now() - cState.open.timestamp < view.state.facet(completionConfig).interactionDelay)\n        return false;\n    return applyCompletion(view, cState.open.options[cState.open.selected]);\n};\n/**\nExplicitly start autocompletion.\n*/\nconst startCompletion = (view) => {\n    let cState = view.state.field(completionState, false);\n    if (!cState)\n        return false;\n    view.dispatch({ effects: startCompletionEffect.of(true) });\n    return true;\n};\n/**\nClose the currently active completion.\n*/\nconst closeCompletion = (view) => {\n    let cState = view.state.field(completionState, false);\n    if (!cState || !cState.active.some(a => a.state != 0 /* State.Inactive */))\n        return false;\n    view.dispatch({ effects: closeCompletionEffect.of(null) });\n    return true;\n};\nclass RunningQuery {\n    constructor(active, context) {\n        this.active = active;\n        this.context = context;\n        this.time = Date.now();\n        this.updates = [];\n        // Note that 'undefined' means 'not done yet', whereas 'null' means\n        // 'query returned null'.\n        this.done = undefined;\n    }\n}\nconst MaxUpdateCount = 50, MinAbortTime = 1000;\nconst completionPlugin = /*@__PURE__*/ViewPlugin.fromClass(class {\n    constructor(view) {\n        this.view = view;\n        this.debounceUpdate = -1;\n        this.running = [];\n        this.debounceAccept = -1;\n        this.pendingStart = false;\n        this.composing = 0 /* CompositionState.None */;\n        for (let active of view.state.field(completionState).active)\n            if (active.isPending)\n                this.startQuery(active);\n    }\n    update(update) {\n        let cState = update.state.field(completionState);\n        let conf = update.state.facet(completionConfig);\n        if (!update.selectionSet && !update.docChanged && update.startState.field(completionState) == cState)\n            return;\n        let doesReset = update.transactions.some(tr => {\n            let type = getUpdateType(tr, conf);\n            return (type & 8 /* UpdateType.Reset */) || (tr.selection || tr.docChanged) && !(type & 3 /* UpdateType.SimpleInteraction */);\n        });\n        for (let i = 0; i < this.running.length; i++) {\n            let query = this.running[i];\n            if (doesReset ||\n                query.context.abortOnDocChange && update.docChanged ||\n                query.updates.length + update.transactions.length > MaxUpdateCount && Date.now() - query.time > MinAbortTime) {\n                for (let handler of query.context.abortListeners) {\n                    try {\n                        handler();\n                    }\n                    catch (e) {\n                        logException(this.view.state, e);\n                    }\n                }\n                query.context.abortListeners = null;\n                this.running.splice(i--, 1);\n            }\n            else {\n                query.updates.push(...update.transactions);\n            }\n        }\n        if (this.debounceUpdate > -1)\n            clearTimeout(this.debounceUpdate);\n        if (update.transactions.some(tr => tr.effects.some(e => e.is(startCompletionEffect))))\n            this.pendingStart = true;\n        let delay = this.pendingStart ? 50 : conf.activateOnTypingDelay;\n        this.debounceUpdate = cState.active.some(a => a.isPending && !this.running.some(q => q.active.source == a.source))\n            ? setTimeout(() => this.startUpdate(), delay) : -1;\n        if (this.composing != 0 /* CompositionState.None */)\n            for (let tr of update.transactions) {\n                if (tr.isUserEvent(\"input.type\"))\n                    this.composing = 2 /* CompositionState.Changed */;\n                else if (this.composing == 2 /* CompositionState.Changed */ && tr.selection)\n                    this.composing = 3 /* CompositionState.ChangedAndMoved */;\n            }\n    }\n    startUpdate() {\n        this.debounceUpdate = -1;\n        this.pendingStart = false;\n        let { state } = this.view, cState = state.field(completionState);\n        for (let active of cState.active) {\n            if (active.isPending && !this.running.some(r => r.active.source == active.source))\n                this.startQuery(active);\n        }\n        if (this.running.length && cState.open && cState.open.disabled)\n            this.debounceAccept = setTimeout(() => this.accept(), this.view.state.facet(completionConfig).updateSyncTime);\n    }\n    startQuery(active) {\n        let { state } = this.view, pos = cur(state);\n        let context = new CompletionContext(state, pos, active.explicit, this.view);\n        let pending = new RunningQuery(active, context);\n        this.running.push(pending);\n        Promise.resolve(active.source(context)).then(result => {\n            if (!pending.context.aborted) {\n                pending.done = result || null;\n                this.scheduleAccept();\n            }\n        }, err => {\n            this.view.dispatch({ effects: closeCompletionEffect.of(null) });\n            logException(this.view.state, err);\n        });\n    }\n    scheduleAccept() {\n        if (this.running.every(q => q.done !== undefined))\n            this.accept();\n        else if (this.debounceAccept < 0)\n            this.debounceAccept = setTimeout(() => this.accept(), this.view.state.facet(completionConfig).updateSyncTime);\n    }\n    // For each finished query in this.running, try to create a result\n    // or, if appropriate, restart the query.\n    accept() {\n        var _a;\n        if (this.debounceAccept > -1)\n            clearTimeout(this.debounceAccept);\n        this.debounceAccept = -1;\n        let updated = [];\n        let conf = this.view.state.facet(completionConfig), cState = this.view.state.field(completionState);\n        for (let i = 0; i < this.running.length; i++) {\n            let query = this.running[i];\n            if (query.done === undefined)\n                continue;\n            this.running.splice(i--, 1);\n            if (query.done) {\n                let pos = cur(query.updates.length ? query.updates[0].startState : this.view.state);\n                let limit = Math.min(pos, query.done.from + (query.active.explicit ? 0 : 1));\n                let active = new ActiveResult(query.active.source, query.active.explicit, limit, query.done, query.done.from, (_a = query.done.to) !== null && _a !== void 0 ? _a : pos);\n                // Replay the transactions that happened since the start of\n                // the request and see if that preserves the result\n                for (let tr of query.updates)\n                    active = active.update(tr, conf);\n                if (active.hasResult()) {\n                    updated.push(active);\n                    continue;\n                }\n            }\n            let current = cState.active.find(a => a.source == query.active.source);\n            if (current && current.isPending) {\n                if (query.done == null) {\n                    // Explicitly failed. Should clear the pending status if it\n                    // hasn't been re-set in the meantime.\n                    let active = new ActiveSource(query.active.source, 0 /* State.Inactive */);\n                    for (let tr of query.updates)\n                        active = active.update(tr, conf);\n                    if (!active.isPending)\n                        updated.push(active);\n                }\n                else {\n                    // Cleared by subsequent transactions. Restart.\n                    this.startQuery(current);\n                }\n            }\n        }\n        if (updated.length || cState.open && cState.open.disabled)\n            this.view.dispatch({ effects: setActiveEffect.of(updated) });\n    }\n}, {\n    eventHandlers: {\n        blur(event) {\n            let state = this.view.state.field(completionState, false);\n            if (state && state.tooltip && this.view.state.facet(completionConfig).closeOnBlur) {\n                let dialog = state.open && getTooltip(this.view, state.open.tooltip);\n                if (!dialog || !dialog.dom.contains(event.relatedTarget))\n                    setTimeout(() => this.view.dispatch({ effects: closeCompletionEffect.of(null) }), 10);\n            }\n        },\n        compositionstart() {\n            this.composing = 1 /* CompositionState.Started */;\n        },\n        compositionend() {\n            if (this.composing == 3 /* CompositionState.ChangedAndMoved */) {\n                // Safari fires compositionend events synchronously, possibly\n                // from inside an update, so dispatch asynchronously to avoid reentrancy\n                setTimeout(() => this.view.dispatch({ effects: startCompletionEffect.of(false) }), 20);\n            }\n            this.composing = 0 /* CompositionState.None */;\n        }\n    }\n});\nconst windows = typeof navigator == \"object\" && /*@__PURE__*//Win/.test(navigator.platform);\nconst commitCharacters = /*@__PURE__*/Prec.highest(/*@__PURE__*/EditorView.domEventHandlers({\n    keydown(event, view) {\n        let field = view.state.field(completionState, false);\n        if (!field || !field.open || field.open.disabled || field.open.selected < 0 ||\n            event.key.length > 1 || event.ctrlKey && !(windows && event.altKey) || event.metaKey)\n            return false;\n        let option = field.open.options[field.open.selected];\n        let result = field.active.find(a => a.source == option.source);\n        let commitChars = option.completion.commitCharacters || result.result.commitCharacters;\n        if (commitChars && commitChars.indexOf(event.key) > -1)\n            applyCompletion(view, option);\n        return false;\n    }\n}));\n\nconst baseTheme = /*@__PURE__*/EditorView.baseTheme({\n    \".cm-tooltip.cm-tooltip-autocomplete\": {\n        \"& > ul\": {\n            fontFamily: \"monospace\",\n            whiteSpace: \"nowrap\",\n            overflow: \"hidden auto\",\n            maxWidth_fallback: \"700px\",\n            maxWidth: \"min(700px, 95vw)\",\n            minWidth: \"250px\",\n            maxHeight: \"10em\",\n            height: \"100%\",\n            listStyle: \"none\",\n            margin: 0,\n            padding: 0,\n            \"& > li, & > completion-section\": {\n                padding: \"1px 3px\",\n                lineHeight: 1.2\n            },\n            \"& > li\": {\n                overflowX: \"hidden\",\n                textOverflow: \"ellipsis\",\n                cursor: \"pointer\"\n            },\n            \"& > completion-section\": {\n                display: \"list-item\",\n                borderBottom: \"1px solid silver\",\n                paddingLeft: \"0.5em\",\n                opacity: 0.7\n            }\n        }\n    },\n    \"&light .cm-tooltip-autocomplete ul li[aria-selected]\": {\n        background: \"#17c\",\n        color: \"white\",\n    },\n    \"&light .cm-tooltip-autocomplete-disabled ul li[aria-selected]\": {\n        background: \"#777\",\n    },\n    \"&dark .cm-tooltip-autocomplete ul li[aria-selected]\": {\n        background: \"#347\",\n        color: \"white\",\n    },\n    \"&dark .cm-tooltip-autocomplete-disabled ul li[aria-selected]\": {\n        background: \"#444\",\n    },\n    \".cm-completionListIncompleteTop:before, .cm-completionListIncompleteBottom:after\": {\n        content: '\"···\"',\n        opacity: 0.5,\n        display: \"block\",\n        textAlign: \"center\"\n    },\n    \".cm-tooltip.cm-completionInfo\": {\n        position: \"absolute\",\n        padding: \"3px 9px\",\n        width: \"max-content\",\n        maxWidth: `${400 /* Info.Width */}px`,\n        boxSizing: \"border-box\",\n        whiteSpace: \"pre-line\"\n    },\n    \".cm-completionInfo.cm-completionInfo-left\": { right: \"100%\" },\n    \".cm-completionInfo.cm-completionInfo-right\": { left: \"100%\" },\n    \".cm-completionInfo.cm-completionInfo-left-narrow\": { right: `${30 /* Info.Margin */}px` },\n    \".cm-completionInfo.cm-completionInfo-right-narrow\": { left: `${30 /* Info.Margin */}px` },\n    \"&light .cm-snippetField\": { backgroundColor: \"#00000022\" },\n    \"&dark .cm-snippetField\": { backgroundColor: \"#ffffff22\" },\n    \".cm-snippetFieldPosition\": {\n        verticalAlign: \"text-top\",\n        width: 0,\n        height: \"1.15em\",\n        display: \"inline-block\",\n        margin: \"0 -0.7px -.7em\",\n        borderLeft: \"1.4px dotted #888\"\n    },\n    \".cm-completionMatchedText\": {\n        textDecoration: \"underline\"\n    },\n    \".cm-completionDetail\": {\n        marginLeft: \"0.5em\",\n        fontStyle: \"italic\"\n    },\n    \".cm-completionIcon\": {\n        fontSize: \"90%\",\n        width: \".8em\",\n        display: \"inline-block\",\n        textAlign: \"center\",\n        paddingRight: \".6em\",\n        opacity: \"0.6\",\n        boxSizing: \"content-box\"\n    },\n    \".cm-completionIcon-function, .cm-completionIcon-method\": {\n        \"&:after\": { content: \"'ƒ'\" }\n    },\n    \".cm-completionIcon-class\": {\n        \"&:after\": { content: \"'○'\" }\n    },\n    \".cm-completionIcon-interface\": {\n        \"&:after\": { content: \"'◌'\" }\n    },\n    \".cm-completionIcon-variable\": {\n        \"&:after\": { content: \"'𝑥'\" }\n    },\n    \".cm-completionIcon-constant\": {\n        \"&:after\": { content: \"'𝐶'\" }\n    },\n    \".cm-completionIcon-type\": {\n        \"&:after\": { content: \"'𝑡'\" }\n    },\n    \".cm-completionIcon-enum\": {\n        \"&:after\": { content: \"'∪'\" }\n    },\n    \".cm-completionIcon-property\": {\n        \"&:after\": { content: \"'□'\" }\n    },\n    \".cm-completionIcon-keyword\": {\n        \"&:after\": { content: \"'🔑\\uFE0E'\" } // Disable emoji rendering\n    },\n    \".cm-completionIcon-namespace\": {\n        \"&:after\": { content: \"'▢'\" }\n    },\n    \".cm-completionIcon-text\": {\n        \"&:after\": { content: \"'abc'\", fontSize: \"50%\", verticalAlign: \"middle\" }\n    }\n});\n\nclass FieldPos {\n    constructor(field, line, from, to) {\n        this.field = field;\n        this.line = line;\n        this.from = from;\n        this.to = to;\n    }\n}\nclass FieldRange {\n    constructor(field, from, to) {\n        this.field = field;\n        this.from = from;\n        this.to = to;\n    }\n    map(changes) {\n        let from = changes.mapPos(this.from, -1, MapMode.TrackDel);\n        let to = changes.mapPos(this.to, 1, MapMode.TrackDel);\n        return from == null || to == null ? null : new FieldRange(this.field, from, to);\n    }\n}\nclass Snippet {\n    constructor(lines, fieldPositions) {\n        this.lines = lines;\n        this.fieldPositions = fieldPositions;\n    }\n    instantiate(state, pos) {\n        let text = [], lineStart = [pos];\n        let lineObj = state.doc.lineAt(pos), baseIndent = /^\\s*/.exec(lineObj.text)[0];\n        for (let line of this.lines) {\n            if (text.length) {\n                let indent = baseIndent, tabs = /^\\t*/.exec(line)[0].length;\n                for (let i = 0; i < tabs; i++)\n                    indent += state.facet(indentUnit);\n                lineStart.push(pos + indent.length - tabs);\n                line = indent + line.slice(tabs);\n            }\n            text.push(line);\n            pos += line.length + 1;\n        }\n        let ranges = this.fieldPositions.map(pos => new FieldRange(pos.field, lineStart[pos.line] + pos.from, lineStart[pos.line] + pos.to));\n        return { text, ranges };\n    }\n    static parse(template) {\n        let fields = [];\n        let lines = [], positions = [], m;\n        for (let line of template.split(/\\r\\n?|\\n/)) {\n            while (m = /[#$]\\{(?:(\\d+)(?::([^}]*))?|((?:\\\\[{}]|[^}])*))\\}/.exec(line)) {\n                let seq = m[1] ? +m[1] : null, rawName = m[2] || m[3] || \"\", found = -1;\n                let name = rawName.replace(/\\\\[{}]/g, m => m[1]);\n                for (let i = 0; i < fields.length; i++) {\n                    if (seq != null ? fields[i].seq == seq : name ? fields[i].name == name : false)\n                        found = i;\n                }\n                if (found < 0) {\n                    let i = 0;\n                    while (i < fields.length && (seq == null || (fields[i].seq != null && fields[i].seq < seq)))\n                        i++;\n                    fields.splice(i, 0, { seq, name });\n                    found = i;\n                    for (let pos of positions)\n                        if (pos.field >= found)\n                            pos.field++;\n                }\n                positions.push(new FieldPos(found, lines.length, m.index, m.index + name.length));\n                line = line.slice(0, m.index) + rawName + line.slice(m.index + m[0].length);\n            }\n            line = line.replace(/\\\\([{}])/g, (_, brace, index) => {\n                for (let pos of positions)\n                    if (pos.line == lines.length && pos.from > index) {\n                        pos.from--;\n                        pos.to--;\n                    }\n                return brace;\n            });\n            lines.push(line);\n        }\n        return new Snippet(lines, positions);\n    }\n}\nlet fieldMarker = /*@__PURE__*/Decoration.widget({ widget: /*@__PURE__*/new class extends WidgetType {\n        toDOM() {\n            let span = document.createElement(\"span\");\n            span.className = \"cm-snippetFieldPosition\";\n            return span;\n        }\n        ignoreEvent() { return false; }\n    } });\nlet fieldRange = /*@__PURE__*/Decoration.mark({ class: \"cm-snippetField\" });\nclass ActiveSnippet {\n    constructor(ranges, active) {\n        this.ranges = ranges;\n        this.active = active;\n        this.deco = Decoration.set(ranges.map(r => (r.from == r.to ? fieldMarker : fieldRange).range(r.from, r.to)));\n    }\n    map(changes) {\n        let ranges = [];\n        for (let r of this.ranges) {\n            let mapped = r.map(changes);\n            if (!mapped)\n                return null;\n            ranges.push(mapped);\n        }\n        return new ActiveSnippet(ranges, this.active);\n    }\n    selectionInsideField(sel) {\n        return sel.ranges.every(range => this.ranges.some(r => r.field == this.active && r.from <= range.from && r.to >= range.to));\n    }\n}\nconst setActive = /*@__PURE__*/StateEffect.define({\n    map(value, changes) { return value && value.map(changes); }\n});\nconst moveToField = /*@__PURE__*/StateEffect.define();\nconst snippetState = /*@__PURE__*/StateField.define({\n    create() { return null; },\n    update(value, tr) {\n        for (let effect of tr.effects) {\n            if (effect.is(setActive))\n                return effect.value;\n            if (effect.is(moveToField) && value)\n                return new ActiveSnippet(value.ranges, effect.value);\n        }\n        if (value && tr.docChanged)\n            value = value.map(tr.changes);\n        if (value && tr.selection && !value.selectionInsideField(tr.selection))\n            value = null;\n        return value;\n    },\n    provide: f => EditorView.decorations.from(f, val => val ? val.deco : Decoration.none)\n});\nfunction fieldSelection(ranges, field) {\n    return EditorSelection.create(ranges.filter(r => r.field == field).map(r => EditorSelection.range(r.from, r.to)));\n}\n/**\nConvert a snippet template to a function that can\n[apply](https://codemirror.net/6/docs/ref/#autocomplete.Completion.apply) it. Snippets are written\nusing syntax like this:\n\n    \"for (let ${index} = 0; ${index} < ${end}; ${index}++) {\\n\\t${}\\n}\"\n\nEach `${}` placeholder (you may also use `#{}`) indicates a field\nthat the user can fill in. Its name, if any, will be the default\ncontent for the field.\n\nWhen the snippet is activated by calling the returned function,\nthe code is inserted at the given position. Newlines in the\ntemplate are indented by the indentation of the start line, plus\none [indent unit](https://codemirror.net/6/docs/ref/#language.indentUnit) per tab character after\nthe newline.\n\nOn activation, (all instances of) the first field are selected.\nThe user can move between fields with Tab and Shift-Tab as long as\nthe fields are active. Moving to the last field or moving the\ncursor out of the current field deactivates the fields.\n\nThe order of fields defaults to textual order, but you can add\nnumbers to placeholders (`${1}` or `${1:defaultText}`) to provide\na custom order.\n\nTo include a literal `{` or `}` in your template, put a backslash\nin front of it. This will be removed and the brace will not be\ninterpreted as indicating a placeholder.\n*/\nfunction snippet(template) {\n    let snippet = Snippet.parse(template);\n    return (editor, completion, from, to) => {\n        let { text, ranges } = snippet.instantiate(editor.state, from);\n        let { main } = editor.state.selection;\n        let spec = {\n            changes: { from, to: to == main.from ? main.to : to, insert: Text.of(text) },\n            scrollIntoView: true,\n            annotations: completion ? [pickedCompletion.of(completion), Transaction.userEvent.of(\"input.complete\")] : undefined\n        };\n        if (ranges.length)\n            spec.selection = fieldSelection(ranges, 0);\n        if (ranges.some(r => r.field > 0)) {\n            let active = new ActiveSnippet(ranges, 0);\n            let effects = spec.effects = [setActive.of(active)];\n            if (editor.state.field(snippetState, false) === undefined)\n                effects.push(StateEffect.appendConfig.of([snippetState, addSnippetKeymap, snippetPointerHandler, baseTheme]));\n        }\n        editor.dispatch(editor.state.update(spec));\n    };\n}\nfunction moveField(dir) {\n    return ({ state, dispatch }) => {\n        let active = state.field(snippetState, false);\n        if (!active || dir < 0 && active.active == 0)\n            return false;\n        let next = active.active + dir, last = dir > 0 && !active.ranges.some(r => r.field == next + dir);\n        dispatch(state.update({\n            selection: fieldSelection(active.ranges, next),\n            effects: setActive.of(last ? null : new ActiveSnippet(active.ranges, next)),\n            scrollIntoView: true\n        }));\n        return true;\n    };\n}\n/**\nA command that clears the active snippet, if any.\n*/\nconst clearSnippet = ({ state, dispatch }) => {\n    let active = state.field(snippetState, false);\n    if (!active)\n        return false;\n    dispatch(state.update({ effects: setActive.of(null) }));\n    return true;\n};\n/**\nMove to the next snippet field, if available.\n*/\nconst nextSnippetField = /*@__PURE__*/moveField(1);\n/**\nMove to the previous snippet field, if available.\n*/\nconst prevSnippetField = /*@__PURE__*/moveField(-1);\n/**\nCheck if there is an active snippet with a next field for\n`nextSnippetField` to move to.\n*/\nfunction hasNextSnippetField(state) {\n    let active = state.field(snippetState, false);\n    return !!(active && active.ranges.some(r => r.field == active.active + 1));\n}\n/**\nReturns true if there is an active snippet and a previous field\nfor `prevSnippetField` to move to.\n*/\nfunction hasPrevSnippetField(state) {\n    let active = state.field(snippetState, false);\n    return !!(active && active.active > 0);\n}\nconst defaultSnippetKeymap = [\n    { key: \"Tab\", run: nextSnippetField, shift: prevSnippetField },\n    { key: \"Escape\", run: clearSnippet }\n];\n/**\nA facet that can be used to configure the key bindings used by\nsnippets. The default binds Tab to\n[`nextSnippetField`](https://codemirror.net/6/docs/ref/#autocomplete.nextSnippetField), Shift-Tab to\n[`prevSnippetField`](https://codemirror.net/6/docs/ref/#autocomplete.prevSnippetField), and Escape\nto [`clearSnippet`](https://codemirror.net/6/docs/ref/#autocomplete.clearSnippet).\n*/\nconst snippetKeymap = /*@__PURE__*/Facet.define({\n    combine(maps) { return maps.length ? maps[0] : defaultSnippetKeymap; }\n});\nconst addSnippetKeymap = /*@__PURE__*/Prec.highest(/*@__PURE__*/keymap.compute([snippetKeymap], state => state.facet(snippetKeymap)));\n/**\nCreate a completion from a snippet. Returns an object with the\nproperties from `completion`, plus an `apply` function that\napplies the snippet.\n*/\nfunction snippetCompletion(template, completion) {\n    return Object.assign(Object.assign({}, completion), { apply: snippet(template) });\n}\nconst snippetPointerHandler = /*@__PURE__*/EditorView.domEventHandlers({\n    mousedown(event, view) {\n        let active = view.state.field(snippetState, false), pos;\n        if (!active || (pos = view.posAtCoords({ x: event.clientX, y: event.clientY })) == null)\n            return false;\n        let match = active.ranges.find(r => r.from <= pos && r.to >= pos);\n        if (!match || match.field == active.active)\n            return false;\n        view.dispatch({\n            selection: fieldSelection(active.ranges, match.field),\n            effects: setActive.of(active.ranges.some(r => r.field > match.field)\n                ? new ActiveSnippet(active.ranges, match.field) : null),\n            scrollIntoView: true\n        });\n        return true;\n    }\n});\n\nfunction wordRE(wordChars) {\n    let escaped = wordChars.replace(/[\\]\\-\\\\]/g, \"\\\\$&\");\n    try {\n        return new RegExp(`[\\\\p{Alphabetic}\\\\p{Number}_${escaped}]+`, \"ug\");\n    }\n    catch (_a) {\n        return new RegExp(`[\\w${escaped}]`, \"g\");\n    }\n}\nfunction mapRE(re, f) {\n    return new RegExp(f(re.source), re.unicode ? \"u\" : \"\");\n}\nconst wordCaches = /*@__PURE__*/Object.create(null);\nfunction wordCache(wordChars) {\n    return wordCaches[wordChars] || (wordCaches[wordChars] = new WeakMap);\n}\nfunction storeWords(doc, wordRE, result, seen, ignoreAt) {\n    for (let lines = doc.iterLines(), pos = 0; !lines.next().done;) {\n        let { value } = lines, m;\n        wordRE.lastIndex = 0;\n        while (m = wordRE.exec(value)) {\n            if (!seen[m[0]] && pos + m.index != ignoreAt) {\n                result.push({ type: \"text\", label: m[0] });\n                seen[m[0]] = true;\n                if (result.length >= 2000 /* C.MaxList */)\n                    return;\n            }\n        }\n        pos += value.length + 1;\n    }\n}\nfunction collectWords(doc, cache, wordRE, to, ignoreAt) {\n    let big = doc.length >= 1000 /* C.MinCacheLen */;\n    let cached = big && cache.get(doc);\n    if (cached)\n        return cached;\n    let result = [], seen = Object.create(null);\n    if (doc.children) {\n        let pos = 0;\n        for (let ch of doc.children) {\n            if (ch.length >= 1000 /* C.MinCacheLen */) {\n                for (let c of collectWords(ch, cache, wordRE, to - pos, ignoreAt - pos)) {\n                    if (!seen[c.label]) {\n                        seen[c.label] = true;\n                        result.push(c);\n                    }\n                }\n            }\n            else {\n                storeWords(ch, wordRE, result, seen, ignoreAt - pos);\n            }\n            pos += ch.length + 1;\n        }\n    }\n    else {\n        storeWords(doc, wordRE, result, seen, ignoreAt);\n    }\n    if (big && result.length < 2000 /* C.MaxList */)\n        cache.set(doc, result);\n    return result;\n}\n/**\nA completion source that will scan the document for words (using a\n[character categorizer](https://codemirror.net/6/docs/ref/#state.EditorState.charCategorizer)), and\nreturn those as completions.\n*/\nconst completeAnyWord = context => {\n    let wordChars = context.state.languageDataAt(\"wordChars\", context.pos).join(\"\");\n    let re = wordRE(wordChars);\n    let token = context.matchBefore(mapRE(re, s => s + \"$\"));\n    if (!token && !context.explicit)\n        return null;\n    let from = token ? token.from : context.pos;\n    let options = collectWords(context.state.doc, wordCache(wordChars), re, 50000 /* C.Range */, from);\n    return { from, options, validFor: mapRE(re, s => \"^\" + s) };\n};\n\nconst defaults = {\n    brackets: [\"(\", \"[\", \"{\", \"'\", '\"'],\n    before: \")]}:;>\",\n    stringPrefixes: []\n};\nconst closeBracketEffect = /*@__PURE__*/StateEffect.define({\n    map(value, mapping) {\n        let mapped = mapping.mapPos(value, -1, MapMode.TrackAfter);\n        return mapped == null ? undefined : mapped;\n    }\n});\nconst closedBracket = /*@__PURE__*/new class extends RangeValue {\n};\nclosedBracket.startSide = 1;\nclosedBracket.endSide = -1;\nconst bracketState = /*@__PURE__*/StateField.define({\n    create() { return RangeSet.empty; },\n    update(value, tr) {\n        value = value.map(tr.changes);\n        if (tr.selection) {\n            let line = tr.state.doc.lineAt(tr.selection.main.head);\n            value = value.update({ filter: from => from >= line.from && from <= line.to });\n        }\n        for (let effect of tr.effects)\n            if (effect.is(closeBracketEffect))\n                value = value.update({ add: [closedBracket.range(effect.value, effect.value + 1)] });\n        return value;\n    }\n});\n/**\nExtension to enable bracket-closing behavior. When a closeable\nbracket is typed, its closing bracket is immediately inserted\nafter the cursor. When closing a bracket directly in front of a\nclosing bracket inserted by the extension, the cursor moves over\nthat bracket.\n*/\nfunction closeBrackets() {\n    return [inputHandler, bracketState];\n}\nconst definedClosing = \"()[]{}<>\";\nfunction closing(ch) {\n    for (let i = 0; i < definedClosing.length; i += 2)\n        if (definedClosing.charCodeAt(i) == ch)\n            return definedClosing.charAt(i + 1);\n    return fromCodePoint(ch < 128 ? ch : ch + 1);\n}\nfunction config(state, pos) {\n    return state.languageDataAt(\"closeBrackets\", pos)[0] || defaults;\n}\nconst android = typeof navigator == \"object\" && /*@__PURE__*//Android\\b/.test(navigator.userAgent);\nconst inputHandler = /*@__PURE__*/EditorView.inputHandler.of((view, from, to, insert) => {\n    if ((android ? view.composing : view.compositionStarted) || view.state.readOnly)\n        return false;\n    let sel = view.state.selection.main;\n    if (insert.length > 2 || insert.length == 2 && codePointSize(codePointAt(insert, 0)) == 1 ||\n        from != sel.from || to != sel.to)\n        return false;\n    let tr = insertBracket(view.state, insert);\n    if (!tr)\n        return false;\n    view.dispatch(tr);\n    return true;\n});\n/**\nCommand that implements deleting a pair of matching brackets when\nthe cursor is between them.\n*/\nconst deleteBracketPair = ({ state, dispatch }) => {\n    if (state.readOnly)\n        return false;\n    let conf = config(state, state.selection.main.head);\n    let tokens = conf.brackets || defaults.brackets;\n    let dont = null, changes = state.changeByRange(range => {\n        if (range.empty) {\n            let before = prevChar(state.doc, range.head);\n            for (let token of tokens) {\n                if (token == before && nextChar(state.doc, range.head) == closing(codePointAt(token, 0)))\n                    return { changes: { from: range.head - token.length, to: range.head + token.length },\n                        range: EditorSelection.cursor(range.head - token.length) };\n            }\n        }\n        return { range: dont = range };\n    });\n    if (!dont)\n        dispatch(state.update(changes, { scrollIntoView: true, userEvent: \"delete.backward\" }));\n    return !dont;\n};\n/**\nClose-brackets related key bindings. Binds Backspace to\n[`deleteBracketPair`](https://codemirror.net/6/docs/ref/#autocomplete.deleteBracketPair).\n*/\nconst closeBracketsKeymap = [\n    { key: \"Backspace\", run: deleteBracketPair }\n];\n/**\nImplements the extension's behavior on text insertion. If the\ngiven string counts as a bracket in the language around the\nselection, and replacing the selection with it requires custom\nbehavior (inserting a closing version or skipping past a\npreviously-closed bracket), this function returns a transaction\nrepresenting that custom behavior. (You only need this if you want\nto programmatically insert brackets—the\n[`closeBrackets`](https://codemirror.net/6/docs/ref/#autocomplete.closeBrackets) extension will\ntake care of running this for user input.)\n*/\nfunction insertBracket(state, bracket) {\n    let conf = config(state, state.selection.main.head);\n    let tokens = conf.brackets || defaults.brackets;\n    for (let tok of tokens) {\n        let closed = closing(codePointAt(tok, 0));\n        if (bracket == tok)\n            return closed == tok ? handleSame(state, tok, tokens.indexOf(tok + tok + tok) > -1, conf)\n                : handleOpen(state, tok, closed, conf.before || defaults.before);\n        if (bracket == closed && closedBracketAt(state, state.selection.main.from))\n            return handleClose(state, tok, closed);\n    }\n    return null;\n}\nfunction closedBracketAt(state, pos) {\n    let found = false;\n    state.field(bracketState).between(0, state.doc.length, from => {\n        if (from == pos)\n            found = true;\n    });\n    return found;\n}\nfunction nextChar(doc, pos) {\n    let next = doc.sliceString(pos, pos + 2);\n    return next.slice(0, codePointSize(codePointAt(next, 0)));\n}\nfunction prevChar(doc, pos) {\n    let prev = doc.sliceString(pos - 2, pos);\n    return codePointSize(codePointAt(prev, 0)) == prev.length ? prev : prev.slice(1);\n}\nfunction handleOpen(state, open, close, closeBefore) {\n    let dont = null, changes = state.changeByRange(range => {\n        if (!range.empty)\n            return { changes: [{ insert: open, from: range.from }, { insert: close, from: range.to }],\n                effects: closeBracketEffect.of(range.to + open.length),\n                range: EditorSelection.range(range.anchor + open.length, range.head + open.length) };\n        let next = nextChar(state.doc, range.head);\n        if (!next || /\\s/.test(next) || closeBefore.indexOf(next) > -1)\n            return { changes: { insert: open + close, from: range.head },\n                effects: closeBracketEffect.of(range.head + open.length),\n                range: EditorSelection.cursor(range.head + open.length) };\n        return { range: dont = range };\n    });\n    return dont ? null : state.update(changes, {\n        scrollIntoView: true,\n        userEvent: \"input.type\"\n    });\n}\nfunction handleClose(state, _open, close) {\n    let dont = null, changes = state.changeByRange(range => {\n        if (range.empty && nextChar(state.doc, range.head) == close)\n            return { changes: { from: range.head, to: range.head + close.length, insert: close },\n                range: EditorSelection.cursor(range.head + close.length) };\n        return dont = { range };\n    });\n    return dont ? null : state.update(changes, {\n        scrollIntoView: true,\n        userEvent: \"input.type\"\n    });\n}\n// Handles cases where the open and close token are the same, and\n// possibly triple quotes (as in `\"\"\"abc\"\"\"`-style quoting).\nfunction handleSame(state, token, allowTriple, config) {\n    let stringPrefixes = config.stringPrefixes || defaults.stringPrefixes;\n    let dont = null, changes = state.changeByRange(range => {\n        if (!range.empty)\n            return { changes: [{ insert: token, from: range.from }, { insert: token, from: range.to }],\n                effects: closeBracketEffect.of(range.to + token.length),\n                range: EditorSelection.range(range.anchor + token.length, range.head + token.length) };\n        let pos = range.head, next = nextChar(state.doc, pos), start;\n        if (next == token) {\n            if (nodeStart(state, pos)) {\n                return { changes: { insert: token + token, from: pos },\n                    effects: closeBracketEffect.of(pos + token.length),\n                    range: EditorSelection.cursor(pos + token.length) };\n            }\n            else if (closedBracketAt(state, pos)) {\n                let isTriple = allowTriple && state.sliceDoc(pos, pos + token.length * 3) == token + token + token;\n                let content = isTriple ? token + token + token : token;\n                return { changes: { from: pos, to: pos + content.length, insert: content },\n                    range: EditorSelection.cursor(pos + content.length) };\n            }\n        }\n        else if (allowTriple && state.sliceDoc(pos - 2 * token.length, pos) == token + token &&\n            (start = canStartStringAt(state, pos - 2 * token.length, stringPrefixes)) > -1 &&\n            nodeStart(state, start)) {\n            return { changes: { insert: token + token + token + token, from: pos },\n                effects: closeBracketEffect.of(pos + token.length),\n                range: EditorSelection.cursor(pos + token.length) };\n        }\n        else if (state.charCategorizer(pos)(next) != CharCategory.Word) {\n            if (canStartStringAt(state, pos, stringPrefixes) > -1 && !probablyInString(state, pos, token, stringPrefixes))\n                return { changes: { insert: token + token, from: pos },\n                    effects: closeBracketEffect.of(pos + token.length),\n                    range: EditorSelection.cursor(pos + token.length) };\n        }\n        return { range: dont = range };\n    });\n    return dont ? null : state.update(changes, {\n        scrollIntoView: true,\n        userEvent: \"input.type\"\n    });\n}\nfunction nodeStart(state, pos) {\n    let tree = syntaxTree(state).resolveInner(pos + 1);\n    return tree.parent && tree.from == pos;\n}\nfunction probablyInString(state, pos, quoteToken, prefixes) {\n    let node = syntaxTree(state).resolveInner(pos, -1);\n    let maxPrefix = prefixes.reduce((m, p) => Math.max(m, p.length), 0);\n    for (let i = 0; i < 5; i++) {\n        let start = state.sliceDoc(node.from, Math.min(node.to, node.from + quoteToken.length + maxPrefix));\n        let quotePos = start.indexOf(quoteToken);\n        if (!quotePos || quotePos > -1 && prefixes.indexOf(start.slice(0, quotePos)) > -1) {\n            let first = node.firstChild;\n            while (first && first.from == node.from && first.to - first.from > quoteToken.length + quotePos) {\n                if (state.sliceDoc(first.to - quoteToken.length, first.to) == quoteToken)\n                    return false;\n                first = first.firstChild;\n            }\n            return true;\n        }\n        let parent = node.to == pos && node.parent;\n        if (!parent)\n            break;\n        node = parent;\n    }\n    return false;\n}\nfunction canStartStringAt(state, pos, prefixes) {\n    let charCat = state.charCategorizer(pos);\n    if (charCat(state.sliceDoc(pos - 1, pos)) != CharCategory.Word)\n        return pos;\n    for (let prefix of prefixes) {\n        let start = pos - prefix.length;\n        if (state.sliceDoc(start, pos) == prefix && charCat(state.sliceDoc(start - 1, start)) != CharCategory.Word)\n            return start;\n    }\n    return -1;\n}\n\n/**\nReturns an extension that enables autocompletion.\n*/\nfunction autocompletion(config = {}) {\n    return [\n        commitCharacters,\n        completionState,\n        completionConfig.of(config),\n        completionPlugin,\n        completionKeymapExt,\n        baseTheme\n    ];\n}\n/**\nBasic keybindings for autocompletion.\n\n - Ctrl-Space (and Alt-\\` on macOS): [`startCompletion`](https://codemirror.net/6/docs/ref/#autocomplete.startCompletion)\n - Escape: [`closeCompletion`](https://codemirror.net/6/docs/ref/#autocomplete.closeCompletion)\n - ArrowDown: [`moveCompletionSelection`](https://codemirror.net/6/docs/ref/#autocomplete.moveCompletionSelection)`(true)`\n - ArrowUp: [`moveCompletionSelection`](https://codemirror.net/6/docs/ref/#autocomplete.moveCompletionSelection)`(false)`\n - PageDown: [`moveCompletionSelection`](https://codemirror.net/6/docs/ref/#autocomplete.moveCompletionSelection)`(true, \"page\")`\n - PageDown: [`moveCompletionSelection`](https://codemirror.net/6/docs/ref/#autocomplete.moveCompletionSelection)`(true, \"page\")`\n - Enter: [`acceptCompletion`](https://codemirror.net/6/docs/ref/#autocomplete.acceptCompletion)\n*/\nconst completionKeymap = [\n    { key: \"Ctrl-Space\", run: startCompletion },\n    { mac: \"Alt-`\", run: startCompletion },\n    { key: \"Escape\", run: closeCompletion },\n    { key: \"ArrowDown\", run: /*@__PURE__*/moveCompletionSelection(true) },\n    { key: \"ArrowUp\", run: /*@__PURE__*/moveCompletionSelection(false) },\n    { key: \"PageDown\", run: /*@__PURE__*/moveCompletionSelection(true, \"page\") },\n    { key: \"PageUp\", run: /*@__PURE__*/moveCompletionSelection(false, \"page\") },\n    { key: \"Enter\", run: acceptCompletion }\n];\nconst completionKeymapExt = /*@__PURE__*/Prec.highest(/*@__PURE__*/keymap.computeN([completionConfig], state => state.facet(completionConfig).defaultKeymap ? [completionKeymap] : []));\n/**\nGet the current completion status. When completions are available,\nthis will return `\"active\"`. When completions are pending (in the\nprocess of being queried), this returns `\"pending\"`. Otherwise, it\nreturns `null`.\n*/\nfunction completionStatus(state) {\n    let cState = state.field(completionState, false);\n    return cState && cState.active.some(a => a.isPending) ? \"pending\"\n        : cState && cState.active.some(a => a.state != 0 /* State.Inactive */) ? \"active\" : null;\n}\nconst completionArrayCache = /*@__PURE__*/new WeakMap;\n/**\nReturns the available completions as an array.\n*/\nfunction currentCompletions(state) {\n    var _a;\n    let open = (_a = state.field(completionState, false)) === null || _a === void 0 ? void 0 : _a.open;\n    if (!open || open.disabled)\n        return [];\n    let completions = completionArrayCache.get(open.options);\n    if (!completions)\n        completionArrayCache.set(open.options, completions = open.options.map(o => o.completion));\n    return completions;\n}\n/**\nReturn the currently selected completion, if any.\n*/\nfunction selectedCompletion(state) {\n    var _a;\n    let open = (_a = state.field(completionState, false)) === null || _a === void 0 ? void 0 : _a.open;\n    return open && !open.disabled && open.selected >= 0 ? open.options[open.selected].completion : null;\n}\n/**\nReturns the currently selected position in the active completion\nlist, or null if no completions are active.\n*/\nfunction selectedCompletionIndex(state) {\n    var _a;\n    let open = (_a = state.field(completionState, false)) === null || _a === void 0 ? void 0 : _a.open;\n    return open && !open.disabled && open.selected >= 0 ? open.selected : null;\n}\n/**\nCreate an effect that can be attached to a transaction to change\nthe currently selected completion.\n*/\nfunction setSelectedCompletion(index) {\n    return setSelectedEffect.of(index);\n}\n\nexport { CompletionContext, acceptCompletion, autocompletion, clearSnippet, closeBrackets, closeBracketsKeymap, closeCompletion, completeAnyWord, completeFromList, completionKeymap, completionStatus, currentCompletions, deleteBracketPair, hasNextSnippetField, hasPrevSnippetField, ifIn, ifNotIn, insertBracket, insertCompletionText, moveCompletionSelection, nextSnippetField, pickedCompletion, prevSnippetField, selectedCompletion, selectedCompletionIndex, setSelectedCompletion, snippet, snippetCompletion, snippetKeymap, startCompletion };\n","import { Annotation, Facet, combineConfig, StateField, EditorSelection, Transaction, ChangeSet, ChangeDesc, StateEffect, Text, findClusterBreak, countColumn, CharCategory } from '@codemirror/state';\nimport { EditorView, Direction } from '@codemirror/view';\nimport { IndentContext, getIndentation, indentString, matchBrackets, syntaxTree, getIndentUnit, indentUnit } from '@codemirror/language';\nimport { NodeProp } from '@lezer/common';\n\n/**\nComment or uncomment the current selection. Will use line comments\nif available, otherwise falling back to block comments.\n*/\nconst toggleComment = target => {\n    let { state } = target, line = state.doc.lineAt(state.selection.main.from), config = getConfig(target.state, line.from);\n    return config.line ? toggleLineComment(target) : config.block ? toggleBlockCommentByLine(target) : false;\n};\nfunction command(f, option) {\n    return ({ state, dispatch }) => {\n        if (state.readOnly)\n            return false;\n        let tr = f(option, state);\n        if (!tr)\n            return false;\n        dispatch(state.update(tr));\n        return true;\n    };\n}\n/**\nComment or uncomment the current selection using line comments.\nThe line comment syntax is taken from the\n[`commentTokens`](https://codemirror.net/6/docs/ref/#commands.CommentTokens) [language\ndata](https://codemirror.net/6/docs/ref/#state.EditorState.languageDataAt).\n*/\nconst toggleLineComment = /*@__PURE__*/command(changeLineComment, 0 /* CommentOption.Toggle */);\n/**\nComment the current selection using line comments.\n*/\nconst lineComment = /*@__PURE__*/command(changeLineComment, 1 /* CommentOption.Comment */);\n/**\nUncomment the current selection using line comments.\n*/\nconst lineUncomment = /*@__PURE__*/command(changeLineComment, 2 /* CommentOption.Uncomment */);\n/**\nComment or uncomment the current selection using block comments.\nThe block comment syntax is taken from the\n[`commentTokens`](https://codemirror.net/6/docs/ref/#commands.CommentTokens) [language\ndata](https://codemirror.net/6/docs/ref/#state.EditorState.languageDataAt).\n*/\nconst toggleBlockComment = /*@__PURE__*/command(changeBlockComment, 0 /* CommentOption.Toggle */);\n/**\nComment the current selection using block comments.\n*/\nconst blockComment = /*@__PURE__*/command(changeBlockComment, 1 /* CommentOption.Comment */);\n/**\nUncomment the current selection using block comments.\n*/\nconst blockUncomment = /*@__PURE__*/command(changeBlockComment, 2 /* CommentOption.Uncomment */);\n/**\nComment or uncomment the lines around the current selection using\nblock comments.\n*/\nconst toggleBlockCommentByLine = /*@__PURE__*/command((o, s) => changeBlockComment(o, s, selectedLineRanges(s)), 0 /* CommentOption.Toggle */);\nfunction getConfig(state, pos) {\n    let data = state.languageDataAt(\"commentTokens\", pos);\n    return data.length ? data[0] : {};\n}\nconst SearchMargin = 50;\n/**\nDetermines if the given range is block-commented in the given\nstate.\n*/\nfunction findBlockComment(state, { open, close }, from, to) {\n    let textBefore = state.sliceDoc(from - SearchMargin, from);\n    let textAfter = state.sliceDoc(to, to + SearchMargin);\n    let spaceBefore = /\\s*$/.exec(textBefore)[0].length, spaceAfter = /^\\s*/.exec(textAfter)[0].length;\n    let beforeOff = textBefore.length - spaceBefore;\n    if (textBefore.slice(beforeOff - open.length, beforeOff) == open &&\n        textAfter.slice(spaceAfter, spaceAfter + close.length) == close) {\n        return { open: { pos: from - spaceBefore, margin: spaceBefore && 1 },\n            close: { pos: to + spaceAfter, margin: spaceAfter && 1 } };\n    }\n    let startText, endText;\n    if (to - from <= 2 * SearchMargin) {\n        startText = endText = state.sliceDoc(from, to);\n    }\n    else {\n        startText = state.sliceDoc(from, from + SearchMargin);\n        endText = state.sliceDoc(to - SearchMargin, to);\n    }\n    let startSpace = /^\\s*/.exec(startText)[0].length, endSpace = /\\s*$/.exec(endText)[0].length;\n    let endOff = endText.length - endSpace - close.length;\n    if (startText.slice(startSpace, startSpace + open.length) == open &&\n        endText.slice(endOff, endOff + close.length) == close) {\n        return { open: { pos: from + startSpace + open.length,\n                margin: /\\s/.test(startText.charAt(startSpace + open.length)) ? 1 : 0 },\n            close: { pos: to - endSpace - close.length,\n                margin: /\\s/.test(endText.charAt(endOff - 1)) ? 1 : 0 } };\n    }\n    return null;\n}\nfunction selectedLineRanges(state) {\n    let ranges = [];\n    for (let r of state.selection.ranges) {\n        let fromLine = state.doc.lineAt(r.from);\n        let toLine = r.to <= fromLine.to ? fromLine : state.doc.lineAt(r.to);\n        let last = ranges.length - 1;\n        if (last >= 0 && ranges[last].to > fromLine.from)\n            ranges[last].to = toLine.to;\n        else\n            ranges.push({ from: fromLine.from + /^\\s*/.exec(fromLine.text)[0].length, to: toLine.to });\n    }\n    return ranges;\n}\n// Performs toggle, comment and uncomment of block comments in\n// languages that support them.\nfunction changeBlockComment(option, state, ranges = state.selection.ranges) {\n    let tokens = ranges.map(r => getConfig(state, r.from).block);\n    if (!tokens.every(c => c))\n        return null;\n    let comments = ranges.map((r, i) => findBlockComment(state, tokens[i], r.from, r.to));\n    if (option != 2 /* CommentOption.Uncomment */ && !comments.every(c => c)) {\n        return { changes: state.changes(ranges.map((range, i) => {\n                if (comments[i])\n                    return [];\n                return [{ from: range.from, insert: tokens[i].open + \" \" }, { from: range.to, insert: \" \" + tokens[i].close }];\n            })) };\n    }\n    else if (option != 1 /* CommentOption.Comment */ && comments.some(c => c)) {\n        let changes = [];\n        for (let i = 0, comment; i < comments.length; i++)\n            if (comment = comments[i]) {\n                let token = tokens[i], { open, close } = comment;\n                changes.push({ from: open.pos - token.open.length, to: open.pos + open.margin }, { from: close.pos - close.margin, to: close.pos + token.close.length });\n            }\n        return { changes };\n    }\n    return null;\n}\n// Performs toggle, comment and uncomment of line comments.\nfunction changeLineComment(option, state, ranges = state.selection.ranges) {\n    let lines = [];\n    let prevLine = -1;\n    for (let { from, to } of ranges) {\n        let startI = lines.length, minIndent = 1e9;\n        let token = getConfig(state, from).line;\n        if (!token)\n            continue;\n        for (let pos = from; pos <= to;) {\n            let line = state.doc.lineAt(pos);\n            if (line.from > prevLine && (from == to || to > line.from)) {\n                prevLine = line.from;\n                let indent = /^\\s*/.exec(line.text)[0].length;\n                let empty = indent == line.length;\n                let comment = line.text.slice(indent, indent + token.length) == token ? indent : -1;\n                if (indent < line.text.length && indent < minIndent)\n                    minIndent = indent;\n                lines.push({ line, comment, token, indent, empty, single: false });\n            }\n            pos = line.to + 1;\n        }\n        if (minIndent < 1e9)\n            for (let i = startI; i < lines.length; i++)\n                if (lines[i].indent < lines[i].line.text.length)\n                    lines[i].indent = minIndent;\n        if (lines.length == startI + 1)\n            lines[startI].single = true;\n    }\n    if (option != 2 /* CommentOption.Uncomment */ && lines.some(l => l.comment < 0 && (!l.empty || l.single))) {\n        let changes = [];\n        for (let { line, token, indent, empty, single } of lines)\n            if (single || !empty)\n                changes.push({ from: line.from + indent, insert: token + \" \" });\n        let changeSet = state.changes(changes);\n        return { changes: changeSet, selection: state.selection.map(changeSet, 1) };\n    }\n    else if (option != 1 /* CommentOption.Comment */ && lines.some(l => l.comment >= 0)) {\n        let changes = [];\n        for (let { line, comment, token } of lines)\n            if (comment >= 0) {\n                let from = line.from + comment, to = from + token.length;\n                if (line.text[to - line.from] == \" \")\n                    to++;\n                changes.push({ from, to });\n            }\n        return { changes };\n    }\n    return null;\n}\n\nconst fromHistory = /*@__PURE__*/Annotation.define();\n/**\nTransaction annotation that will prevent that transaction from\nbeing combined with other transactions in the undo history. Given\n`\"before\"`, it'll prevent merging with previous transactions. With\n`\"after\"`, subsequent transactions won't be combined with this\none. With `\"full\"`, the transaction is isolated on both sides.\n*/\nconst isolateHistory = /*@__PURE__*/Annotation.define();\n/**\nThis facet provides a way to register functions that, given a\ntransaction, provide a set of effects that the history should\nstore when inverting the transaction. This can be used to\nintegrate some kinds of effects in the history, so that they can\nbe undone (and redone again).\n*/\nconst invertedEffects = /*@__PURE__*/Facet.define();\nconst historyConfig = /*@__PURE__*/Facet.define({\n    combine(configs) {\n        return combineConfig(configs, {\n            minDepth: 100,\n            newGroupDelay: 500,\n            joinToEvent: (_t, isAdjacent) => isAdjacent,\n        }, {\n            minDepth: Math.max,\n            newGroupDelay: Math.min,\n            joinToEvent: (a, b) => (tr, adj) => a(tr, adj) || b(tr, adj)\n        });\n    }\n});\nfunction changeEnd(changes) {\n    let end = 0;\n    changes.iterChangedRanges((_, to) => end = to);\n    return end;\n}\nconst historyField_ = /*@__PURE__*/StateField.define({\n    create() {\n        return HistoryState.empty;\n    },\n    update(state, tr) {\n        let config = tr.state.facet(historyConfig);\n        let fromHist = tr.annotation(fromHistory);\n        if (fromHist) {\n            let selection = tr.docChanged ? EditorSelection.single(changeEnd(tr.changes)) : undefined;\n            let item = HistEvent.fromTransaction(tr, selection), from = fromHist.side;\n            let other = from == 0 /* BranchName.Done */ ? state.undone : state.done;\n            if (item)\n                other = updateBranch(other, other.length, config.minDepth, item);\n            else\n                other = addSelection(other, tr.startState.selection);\n            return new HistoryState(from == 0 /* BranchName.Done */ ? fromHist.rest : other, from == 0 /* BranchName.Done */ ? other : fromHist.rest);\n        }\n        let isolate = tr.annotation(isolateHistory);\n        if (isolate == \"full\" || isolate == \"before\")\n            state = state.isolate();\n        if (tr.annotation(Transaction.addToHistory) === false)\n            return !tr.changes.empty ? state.addMapping(tr.changes.desc) : state;\n        let event = HistEvent.fromTransaction(tr);\n        let time = tr.annotation(Transaction.time), userEvent = tr.annotation(Transaction.userEvent);\n        if (event)\n            state = state.addChanges(event, time, userEvent, config, tr);\n        else if (tr.selection)\n            state = state.addSelection(tr.startState.selection, time, userEvent, config.newGroupDelay);\n        if (isolate == \"full\" || isolate == \"after\")\n            state = state.isolate();\n        return state;\n    },\n    toJSON(value) {\n        return { done: value.done.map(e => e.toJSON()), undone: value.undone.map(e => e.toJSON()) };\n    },\n    fromJSON(json) {\n        return new HistoryState(json.done.map(HistEvent.fromJSON), json.undone.map(HistEvent.fromJSON));\n    }\n});\n/**\nCreate a history extension with the given configuration.\n*/\nfunction history(config = {}) {\n    return [\n        historyField_,\n        historyConfig.of(config),\n        EditorView.domEventHandlers({\n            beforeinput(e, view) {\n                let command = e.inputType == \"historyUndo\" ? undo : e.inputType == \"historyRedo\" ? redo : null;\n                if (!command)\n                    return false;\n                e.preventDefault();\n                return command(view);\n            }\n        })\n    ];\n}\n/**\nThe state field used to store the history data. Should probably\nonly be used when you want to\n[serialize](https://codemirror.net/6/docs/ref/#state.EditorState.toJSON) or\n[deserialize](https://codemirror.net/6/docs/ref/#state.EditorState^fromJSON) state objects in a way\nthat preserves history.\n*/\nconst historyField = historyField_;\nfunction cmd(side, selection) {\n    return function ({ state, dispatch }) {\n        if (!selection && state.readOnly)\n            return false;\n        let historyState = state.field(historyField_, false);\n        if (!historyState)\n            return false;\n        let tr = historyState.pop(side, state, selection);\n        if (!tr)\n            return false;\n        dispatch(tr);\n        return true;\n    };\n}\n/**\nUndo a single group of history events. Returns false if no group\nwas available.\n*/\nconst undo = /*@__PURE__*/cmd(0 /* BranchName.Done */, false);\n/**\nRedo a group of history events. Returns false if no group was\navailable.\n*/\nconst redo = /*@__PURE__*/cmd(1 /* BranchName.Undone */, false);\n/**\nUndo a change or selection change.\n*/\nconst undoSelection = /*@__PURE__*/cmd(0 /* BranchName.Done */, true);\n/**\nRedo a change or selection change.\n*/\nconst redoSelection = /*@__PURE__*/cmd(1 /* BranchName.Undone */, true);\nfunction depth(side) {\n    return function (state) {\n        let histState = state.field(historyField_, false);\n        if (!histState)\n            return 0;\n        let branch = side == 0 /* BranchName.Done */ ? histState.done : histState.undone;\n        return branch.length - (branch.length && !branch[0].changes ? 1 : 0);\n    };\n}\n/**\nThe amount of undoable change events available in a given state.\n*/\nconst undoDepth = /*@__PURE__*/depth(0 /* BranchName.Done */);\n/**\nThe amount of redoable change events available in a given state.\n*/\nconst redoDepth = /*@__PURE__*/depth(1 /* BranchName.Undone */);\n// History events store groups of changes or effects that need to be\n// undone/redone together.\nclass HistEvent {\n    constructor(\n    // The changes in this event. Normal events hold at least one\n    // change or effect. But it may be necessary to store selection\n    // events before the first change, in which case a special type of\n    // instance is created which doesn't hold any changes, with\n    // changes == startSelection == undefined\n    changes, \n    // The effects associated with this event\n    effects, \n    // Accumulated mapping (from addToHistory==false) that should be\n    // applied to events below this one.\n    mapped, \n    // The selection before this event\n    startSelection, \n    // Stores selection changes after this event, to be used for\n    // selection undo/redo.\n    selectionsAfter) {\n        this.changes = changes;\n        this.effects = effects;\n        this.mapped = mapped;\n        this.startSelection = startSelection;\n        this.selectionsAfter = selectionsAfter;\n    }\n    setSelAfter(after) {\n        return new HistEvent(this.changes, this.effects, this.mapped, this.startSelection, after);\n    }\n    toJSON() {\n        var _a, _b, _c;\n        return {\n            changes: (_a = this.changes) === null || _a === void 0 ? void 0 : _a.toJSON(),\n            mapped: (_b = this.mapped) === null || _b === void 0 ? void 0 : _b.toJSON(),\n            startSelection: (_c = this.startSelection) === null || _c === void 0 ? void 0 : _c.toJSON(),\n            selectionsAfter: this.selectionsAfter.map(s => s.toJSON())\n        };\n    }\n    static fromJSON(json) {\n        return new HistEvent(json.changes && ChangeSet.fromJSON(json.changes), [], json.mapped && ChangeDesc.fromJSON(json.mapped), json.startSelection && EditorSelection.fromJSON(json.startSelection), json.selectionsAfter.map(EditorSelection.fromJSON));\n    }\n    // This does not check `addToHistory` and such, it assumes the\n    // transaction needs to be converted to an item. Returns null when\n    // there are no changes or effects in the transaction.\n    static fromTransaction(tr, selection) {\n        let effects = none;\n        for (let invert of tr.startState.facet(invertedEffects)) {\n            let result = invert(tr);\n            if (result.length)\n                effects = effects.concat(result);\n        }\n        if (!effects.length && tr.changes.empty)\n            return null;\n        return new HistEvent(tr.changes.invert(tr.startState.doc), effects, undefined, selection || tr.startState.selection, none);\n    }\n    static selection(selections) {\n        return new HistEvent(undefined, none, undefined, undefined, selections);\n    }\n}\nfunction updateBranch(branch, to, maxLen, newEvent) {\n    let start = to + 1 > maxLen + 20 ? to - maxLen - 1 : 0;\n    let newBranch = branch.slice(start, to);\n    newBranch.push(newEvent);\n    return newBranch;\n}\nfunction isAdjacent(a, b) {\n    let ranges = [], isAdjacent = false;\n    a.iterChangedRanges((f, t) => ranges.push(f, t));\n    b.iterChangedRanges((_f, _t, f, t) => {\n        for (let i = 0; i < ranges.length;) {\n            let from = ranges[i++], to = ranges[i++];\n            if (t >= from && f <= to)\n                isAdjacent = true;\n        }\n    });\n    return isAdjacent;\n}\nfunction eqSelectionShape(a, b) {\n    return a.ranges.length == b.ranges.length &&\n        a.ranges.filter((r, i) => r.empty != b.ranges[i].empty).length === 0;\n}\nfunction conc(a, b) {\n    return !a.length ? b : !b.length ? a : a.concat(b);\n}\nconst none = [];\nconst MaxSelectionsPerEvent = 200;\nfunction addSelection(branch, selection) {\n    if (!branch.length) {\n        return [HistEvent.selection([selection])];\n    }\n    else {\n        let lastEvent = branch[branch.length - 1];\n        let sels = lastEvent.selectionsAfter.slice(Math.max(0, lastEvent.selectionsAfter.length - MaxSelectionsPerEvent));\n        if (sels.length && sels[sels.length - 1].eq(selection))\n            return branch;\n        sels.push(selection);\n        return updateBranch(branch, branch.length - 1, 1e9, lastEvent.setSelAfter(sels));\n    }\n}\n// Assumes the top item has one or more selectionAfter values\nfunction popSelection(branch) {\n    let last = branch[branch.length - 1];\n    let newBranch = branch.slice();\n    newBranch[branch.length - 1] = last.setSelAfter(last.selectionsAfter.slice(0, last.selectionsAfter.length - 1));\n    return newBranch;\n}\n// Add a mapping to the top event in the given branch. If this maps\n// away all the changes and effects in that item, drop it and\n// propagate the mapping to the next item.\nfunction addMappingToBranch(branch, mapping) {\n    if (!branch.length)\n        return branch;\n    let length = branch.length, selections = none;\n    while (length) {\n        let event = mapEvent(branch[length - 1], mapping, selections);\n        if (event.changes && !event.changes.empty || event.effects.length) { // Event survived mapping\n            let result = branch.slice(0, length);\n            result[length - 1] = event;\n            return result;\n        }\n        else { // Drop this event, since there's no changes or effects left\n            mapping = event.mapped;\n            length--;\n            selections = event.selectionsAfter;\n        }\n    }\n    return selections.length ? [HistEvent.selection(selections)] : none;\n}\nfunction mapEvent(event, mapping, extraSelections) {\n    let selections = conc(event.selectionsAfter.length ? event.selectionsAfter.map(s => s.map(mapping)) : none, extraSelections);\n    // Change-less events don't store mappings (they are always the last event in a branch)\n    if (!event.changes)\n        return HistEvent.selection(selections);\n    let mappedChanges = event.changes.map(mapping), before = mapping.mapDesc(event.changes, true);\n    let fullMapping = event.mapped ? event.mapped.composeDesc(before) : before;\n    return new HistEvent(mappedChanges, StateEffect.mapEffects(event.effects, mapping), fullMapping, event.startSelection.map(before), selections);\n}\nconst joinableUserEvent = /^(input\\.type|delete)($|\\.)/;\nclass HistoryState {\n    constructor(done, undone, prevTime = 0, prevUserEvent = undefined) {\n        this.done = done;\n        this.undone = undone;\n        this.prevTime = prevTime;\n        this.prevUserEvent = prevUserEvent;\n    }\n    isolate() {\n        return this.prevTime ? new HistoryState(this.done, this.undone) : this;\n    }\n    addChanges(event, time, userEvent, config, tr) {\n        let done = this.done, lastEvent = done[done.length - 1];\n        if (lastEvent && lastEvent.changes && !lastEvent.changes.empty && event.changes &&\n            (!userEvent || joinableUserEvent.test(userEvent)) &&\n            ((!lastEvent.selectionsAfter.length &&\n                time - this.prevTime < config.newGroupDelay &&\n                config.joinToEvent(tr, isAdjacent(lastEvent.changes, event.changes))) ||\n                // For compose (but not compose.start) events, always join with previous event\n                userEvent == \"input.type.compose\")) {\n            done = updateBranch(done, done.length - 1, config.minDepth, new HistEvent(event.changes.compose(lastEvent.changes), conc(event.effects, lastEvent.effects), lastEvent.mapped, lastEvent.startSelection, none));\n        }\n        else {\n            done = updateBranch(done, done.length, config.minDepth, event);\n        }\n        return new HistoryState(done, none, time, userEvent);\n    }\n    addSelection(selection, time, userEvent, newGroupDelay) {\n        let last = this.done.length ? this.done[this.done.length - 1].selectionsAfter : none;\n        if (last.length > 0 &&\n            time - this.prevTime < newGroupDelay &&\n            userEvent == this.prevUserEvent && userEvent && /^select($|\\.)/.test(userEvent) &&\n            eqSelectionShape(last[last.length - 1], selection))\n            return this;\n        return new HistoryState(addSelection(this.done, selection), this.undone, time, userEvent);\n    }\n    addMapping(mapping) {\n        return new HistoryState(addMappingToBranch(this.done, mapping), addMappingToBranch(this.undone, mapping), this.prevTime, this.prevUserEvent);\n    }\n    pop(side, state, selection) {\n        let branch = side == 0 /* BranchName.Done */ ? this.done : this.undone;\n        if (branch.length == 0)\n            return null;\n        let event = branch[branch.length - 1];\n        if (selection && event.selectionsAfter.length) {\n            return state.update({\n                selection: event.selectionsAfter[event.selectionsAfter.length - 1],\n                annotations: fromHistory.of({ side, rest: popSelection(branch) }),\n                userEvent: side == 0 /* BranchName.Done */ ? \"select.undo\" : \"select.redo\",\n                scrollIntoView: true\n            });\n        }\n        else if (!event.changes) {\n            return null;\n        }\n        else {\n            let rest = branch.length == 1 ? none : branch.slice(0, branch.length - 1);\n            if (event.mapped)\n                rest = addMappingToBranch(rest, event.mapped);\n            return state.update({\n                changes: event.changes,\n                selection: event.startSelection,\n                effects: event.effects,\n                annotations: fromHistory.of({ side, rest }),\n                filter: false,\n                userEvent: side == 0 /* BranchName.Done */ ? \"undo\" : \"redo\",\n                scrollIntoView: true\n            });\n        }\n    }\n}\nHistoryState.empty = /*@__PURE__*/new HistoryState(none, none);\n/**\nDefault key bindings for the undo history.\n\n- Mod-z: [`undo`](https://codemirror.net/6/docs/ref/#commands.undo).\n- Mod-y (Mod-Shift-z on macOS) + Ctrl-Shift-z on Linux: [`redo`](https://codemirror.net/6/docs/ref/#commands.redo).\n- Mod-u: [`undoSelection`](https://codemirror.net/6/docs/ref/#commands.undoSelection).\n- Alt-u (Mod-Shift-u on macOS): [`redoSelection`](https://codemirror.net/6/docs/ref/#commands.redoSelection).\n*/\nconst historyKeymap = [\n    { key: \"Mod-z\", run: undo, preventDefault: true },\n    { key: \"Mod-y\", mac: \"Mod-Shift-z\", run: redo, preventDefault: true },\n    { linux: \"Ctrl-Shift-z\", run: redo, preventDefault: true },\n    { key: \"Mod-u\", run: undoSelection, preventDefault: true },\n    { key: \"Alt-u\", mac: \"Mod-Shift-u\", run: redoSelection, preventDefault: true }\n];\n\nfunction updateSel(sel, by) {\n    return EditorSelection.create(sel.ranges.map(by), sel.mainIndex);\n}\nfunction setSel(state, selection) {\n    return state.update({ selection, scrollIntoView: true, userEvent: \"select\" });\n}\nfunction moveSel({ state, dispatch }, how) {\n    let selection = updateSel(state.selection, how);\n    if (selection.eq(state.selection))\n        return false;\n    dispatch(setSel(state, selection));\n    return true;\n}\nfunction rangeEnd(range, forward) {\n    return EditorSelection.cursor(forward ? range.to : range.from);\n}\nfunction cursorByChar(view, forward) {\n    return moveSel(view, range => range.empty ? view.moveByChar(range, forward) : rangeEnd(range, forward));\n}\nfunction ltrAtCursor(view) {\n    return view.textDirectionAt(view.state.selection.main.head) == Direction.LTR;\n}\n/**\nMove the selection one character to the left (which is backward in\nleft-to-right text, forward in right-to-left text).\n*/\nconst cursorCharLeft = view => cursorByChar(view, !ltrAtCursor(view));\n/**\nMove the selection one character to the right.\n*/\nconst cursorCharRight = view => cursorByChar(view, ltrAtCursor(view));\n/**\nMove the selection one character forward.\n*/\nconst cursorCharForward = view => cursorByChar(view, true);\n/**\nMove the selection one character backward.\n*/\nconst cursorCharBackward = view => cursorByChar(view, false);\nfunction cursorByGroup(view, forward) {\n    return moveSel(view, range => range.empty ? view.moveByGroup(range, forward) : rangeEnd(range, forward));\n}\n/**\nMove the selection to the left across one group of word or\nnon-word (but also non-space) characters.\n*/\nconst cursorGroupLeft = view => cursorByGroup(view, !ltrAtCursor(view));\n/**\nMove the selection one group to the right.\n*/\nconst cursorGroupRight = view => cursorByGroup(view, ltrAtCursor(view));\n/**\nMove the selection one group forward.\n*/\nconst cursorGroupForward = view => cursorByGroup(view, true);\n/**\nMove the selection one group backward.\n*/\nconst cursorGroupBackward = view => cursorByGroup(view, false);\nfunction moveBySubword(view, range, forward) {\n    let categorize = view.state.charCategorizer(range.from);\n    return view.moveByChar(range, forward, start => {\n        let cat = CharCategory.Space, pos = range.from;\n        let done = false, sawUpper = false, sawLower = false;\n        let step = (next) => {\n            if (done)\n                return false;\n            pos += forward ? next.length : -next.length;\n            let nextCat = categorize(next), ahead;\n            if (nextCat == CharCategory.Word && next.charCodeAt(0) < 128 && /[\\W_]/.test(next))\n                nextCat = -1; // Treat word punctuation specially\n            if (cat == CharCategory.Space)\n                cat = nextCat;\n            if (cat != nextCat)\n                return false;\n            if (cat == CharCategory.Word) {\n                if (next.toLowerCase() == next) {\n                    if (!forward && sawUpper)\n                        return false;\n                    sawLower = true;\n                }\n                else if (sawLower) {\n                    if (forward)\n                        return false;\n                    done = true;\n                }\n                else {\n                    if (sawUpper && forward && categorize(ahead = view.state.sliceDoc(pos, pos + 1)) == CharCategory.Word &&\n                        ahead.toLowerCase() == ahead)\n                        return false;\n                    sawUpper = true;\n                }\n            }\n            return true;\n        };\n        step(start);\n        return step;\n    });\n}\nfunction cursorBySubword(view, forward) {\n    return moveSel(view, range => range.empty ? moveBySubword(view, range, forward) : rangeEnd(range, forward));\n}\n/**\nMove the selection one group or camel-case subword forward.\n*/\nconst cursorSubwordForward = view => cursorBySubword(view, true);\n/**\nMove the selection one group or camel-case subword backward.\n*/\nconst cursorSubwordBackward = view => cursorBySubword(view, false);\nfunction interestingNode(state, node, bracketProp) {\n    if (node.type.prop(bracketProp))\n        return true;\n    let len = node.to - node.from;\n    return len && (len > 2 || /[^\\s,.;:]/.test(state.sliceDoc(node.from, node.to))) || node.firstChild;\n}\nfunction moveBySyntax(state, start, forward) {\n    let pos = syntaxTree(state).resolveInner(start.head);\n    let bracketProp = forward ? NodeProp.closedBy : NodeProp.openedBy;\n    // Scan forward through child nodes to see if there's an interesting\n    // node ahead.\n    for (let at = start.head;;) {\n        let next = forward ? pos.childAfter(at) : pos.childBefore(at);\n        if (!next)\n            break;\n        if (interestingNode(state, next, bracketProp))\n            pos = next;\n        else\n            at = forward ? next.to : next.from;\n    }\n    let bracket = pos.type.prop(bracketProp), match, newPos;\n    if (bracket && (match = forward ? matchBrackets(state, pos.from, 1) : matchBrackets(state, pos.to, -1)) && match.matched)\n        newPos = forward ? match.end.to : match.end.from;\n    else\n        newPos = forward ? pos.to : pos.from;\n    return EditorSelection.cursor(newPos, forward ? -1 : 1);\n}\n/**\nMove the cursor over the next syntactic element to the left.\n*/\nconst cursorSyntaxLeft = view => moveSel(view, range => moveBySyntax(view.state, range, !ltrAtCursor(view)));\n/**\nMove the cursor over the next syntactic element to the right.\n*/\nconst cursorSyntaxRight = view => moveSel(view, range => moveBySyntax(view.state, range, ltrAtCursor(view)));\nfunction cursorByLine(view, forward) {\n    return moveSel(view, range => {\n        if (!range.empty)\n            return rangeEnd(range, forward);\n        let moved = view.moveVertically(range, forward);\n        return moved.head != range.head ? moved : view.moveToLineBoundary(range, forward);\n    });\n}\n/**\nMove the selection one line up.\n*/\nconst cursorLineUp = view => cursorByLine(view, false);\n/**\nMove the selection one line down.\n*/\nconst cursorLineDown = view => cursorByLine(view, true);\nfunction pageInfo(view) {\n    let selfScroll = view.scrollDOM.clientHeight < view.scrollDOM.scrollHeight - 2;\n    let marginTop = 0, marginBottom = 0, height;\n    if (selfScroll) {\n        for (let source of view.state.facet(EditorView.scrollMargins)) {\n            let margins = source(view);\n            if (margins === null || margins === void 0 ? void 0 : margins.top)\n                marginTop = Math.max(margins === null || margins === void 0 ? void 0 : margins.top, marginTop);\n            if (margins === null || margins === void 0 ? void 0 : margins.bottom)\n                marginBottom = Math.max(margins === null || margins === void 0 ? void 0 : margins.bottom, marginBottom);\n        }\n        height = view.scrollDOM.clientHeight - marginTop - marginBottom;\n    }\n    else {\n        height = (view.dom.ownerDocument.defaultView || window).innerHeight;\n    }\n    return { marginTop, marginBottom, selfScroll,\n        height: Math.max(view.defaultLineHeight, height - 5) };\n}\nfunction cursorByPage(view, forward) {\n    let page = pageInfo(view);\n    let { state } = view, selection = updateSel(state.selection, range => {\n        return range.empty ? view.moveVertically(range, forward, page.height)\n            : rangeEnd(range, forward);\n    });\n    if (selection.eq(state.selection))\n        return false;\n    let effect;\n    if (page.selfScroll) {\n        let startPos = view.coordsAtPos(state.selection.main.head);\n        let scrollRect = view.scrollDOM.getBoundingClientRect();\n        let scrollTop = scrollRect.top + page.marginTop, scrollBottom = scrollRect.bottom - page.marginBottom;\n        if (startPos && startPos.top > scrollTop && startPos.bottom < scrollBottom)\n            effect = EditorView.scrollIntoView(selection.main.head, { y: \"start\", yMargin: startPos.top - scrollTop });\n    }\n    view.dispatch(setSel(state, selection), { effects: effect });\n    return true;\n}\n/**\nMove the selection one page up.\n*/\nconst cursorPageUp = view => cursorByPage(view, false);\n/**\nMove the selection one page down.\n*/\nconst cursorPageDown = view => cursorByPage(view, true);\nfunction moveByLineBoundary(view, start, forward) {\n    let line = view.lineBlockAt(start.head), moved = view.moveToLineBoundary(start, forward);\n    if (moved.head == start.head && moved.head != (forward ? line.to : line.from))\n        moved = view.moveToLineBoundary(start, forward, false);\n    if (!forward && moved.head == line.from && line.length) {\n        let space = /^\\s*/.exec(view.state.sliceDoc(line.from, Math.min(line.from + 100, line.to)))[0].length;\n        if (space && start.head != line.from + space)\n            moved = EditorSelection.cursor(line.from + space);\n    }\n    return moved;\n}\n/**\nMove the selection to the next line wrap point, or to the end of\nthe line if there isn't one left on this line.\n*/\nconst cursorLineBoundaryForward = view => moveSel(view, range => moveByLineBoundary(view, range, true));\n/**\nMove the selection to previous line wrap point, or failing that to\nthe start of the line. If the line is indented, and the cursor\nisn't already at the end of the indentation, this will move to the\nend of the indentation instead of the start of the line.\n*/\nconst cursorLineBoundaryBackward = view => moveSel(view, range => moveByLineBoundary(view, range, false));\n/**\nMove the selection one line wrap point to the left.\n*/\nconst cursorLineBoundaryLeft = view => moveSel(view, range => moveByLineBoundary(view, range, !ltrAtCursor(view)));\n/**\nMove the selection one line wrap point to the right.\n*/\nconst cursorLineBoundaryRight = view => moveSel(view, range => moveByLineBoundary(view, range, ltrAtCursor(view)));\n/**\nMove the selection to the start of the line.\n*/\nconst cursorLineStart = view => moveSel(view, range => EditorSelection.cursor(view.lineBlockAt(range.head).from, 1));\n/**\nMove the selection to the end of the line.\n*/\nconst cursorLineEnd = view => moveSel(view, range => EditorSelection.cursor(view.lineBlockAt(range.head).to, -1));\nfunction toMatchingBracket(state, dispatch, extend) {\n    let found = false, selection = updateSel(state.selection, range => {\n        let matching = matchBrackets(state, range.head, -1)\n            || matchBrackets(state, range.head, 1)\n            || (range.head > 0 && matchBrackets(state, range.head - 1, 1))\n            || (range.head < state.doc.length && matchBrackets(state, range.head + 1, -1));\n        if (!matching || !matching.end)\n            return range;\n        found = true;\n        let head = matching.start.from == range.head ? matching.end.to : matching.end.from;\n        return extend ? EditorSelection.range(range.anchor, head) : EditorSelection.cursor(head);\n    });\n    if (!found)\n        return false;\n    dispatch(setSel(state, selection));\n    return true;\n}\n/**\nMove the selection to the bracket matching the one it is currently\non, if any.\n*/\nconst cursorMatchingBracket = ({ state, dispatch }) => toMatchingBracket(state, dispatch, false);\n/**\nExtend the selection to the bracket matching the one the selection\nhead is currently on, if any.\n*/\nconst selectMatchingBracket = ({ state, dispatch }) => toMatchingBracket(state, dispatch, true);\nfunction extendSel(view, how) {\n    let selection = updateSel(view.state.selection, range => {\n        let head = how(range);\n        return EditorSelection.range(range.anchor, head.head, head.goalColumn, head.bidiLevel || undefined);\n    });\n    if (selection.eq(view.state.selection))\n        return false;\n    view.dispatch(setSel(view.state, selection));\n    return true;\n}\nfunction selectByChar(view, forward) {\n    return extendSel(view, range => view.moveByChar(range, forward));\n}\n/**\nMove the selection head one character to the left, while leaving\nthe anchor in place.\n*/\nconst selectCharLeft = view => selectByChar(view, !ltrAtCursor(view));\n/**\nMove the selection head one character to the right.\n*/\nconst selectCharRight = view => selectByChar(view, ltrAtCursor(view));\n/**\nMove the selection head one character forward.\n*/\nconst selectCharForward = view => selectByChar(view, true);\n/**\nMove the selection head one character backward.\n*/\nconst selectCharBackward = view => selectByChar(view, false);\nfunction selectByGroup(view, forward) {\n    return extendSel(view, range => view.moveByGroup(range, forward));\n}\n/**\nMove the selection head one [group](https://codemirror.net/6/docs/ref/#commands.cursorGroupLeft) to\nthe left.\n*/\nconst selectGroupLeft = view => selectByGroup(view, !ltrAtCursor(view));\n/**\nMove the selection head one group to the right.\n*/\nconst selectGroupRight = view => selectByGroup(view, ltrAtCursor(view));\n/**\nMove the selection head one group forward.\n*/\nconst selectGroupForward = view => selectByGroup(view, true);\n/**\nMove the selection head one group backward.\n*/\nconst selectGroupBackward = view => selectByGroup(view, false);\nfunction selectBySubword(view, forward) {\n    return extendSel(view, range => moveBySubword(view, range, forward));\n}\n/**\nMove the selection head one group or camel-case subword forward.\n*/\nconst selectSubwordForward = view => selectBySubword(view, true);\n/**\nMove the selection head one group or subword backward.\n*/\nconst selectSubwordBackward = view => selectBySubword(view, false);\n/**\nMove the selection head over the next syntactic element to the left.\n*/\nconst selectSyntaxLeft = view => extendSel(view, range => moveBySyntax(view.state, range, !ltrAtCursor(view)));\n/**\nMove the selection head over the next syntactic element to the right.\n*/\nconst selectSyntaxRight = view => extendSel(view, range => moveBySyntax(view.state, range, ltrAtCursor(view)));\nfunction selectByLine(view, forward) {\n    return extendSel(view, range => view.moveVertically(range, forward));\n}\n/**\nMove the selection head one line up.\n*/\nconst selectLineUp = view => selectByLine(view, false);\n/**\nMove the selection head one line down.\n*/\nconst selectLineDown = view => selectByLine(view, true);\nfunction selectByPage(view, forward) {\n    return extendSel(view, range => view.moveVertically(range, forward, pageInfo(view).height));\n}\n/**\nMove the selection head one page up.\n*/\nconst selectPageUp = view => selectByPage(view, false);\n/**\nMove the selection head one page down.\n*/\nconst selectPageDown = view => selectByPage(view, true);\n/**\nMove the selection head to the next line boundary.\n*/\nconst selectLineBoundaryForward = view => extendSel(view, range => moveByLineBoundary(view, range, true));\n/**\nMove the selection head to the previous line boundary.\n*/\nconst selectLineBoundaryBackward = view => extendSel(view, range => moveByLineBoundary(view, range, false));\n/**\nMove the selection head one line boundary to the left.\n*/\nconst selectLineBoundaryLeft = view => extendSel(view, range => moveByLineBoundary(view, range, !ltrAtCursor(view)));\n/**\nMove the selection head one line boundary to the right.\n*/\nconst selectLineBoundaryRight = view => extendSel(view, range => moveByLineBoundary(view, range, ltrAtCursor(view)));\n/**\nMove the selection head to the start of the line.\n*/\nconst selectLineStart = view => extendSel(view, range => EditorSelection.cursor(view.lineBlockAt(range.head).from));\n/**\nMove the selection head to the end of the line.\n*/\nconst selectLineEnd = view => extendSel(view, range => EditorSelection.cursor(view.lineBlockAt(range.head).to));\n/**\nMove the selection to the start of the document.\n*/\nconst cursorDocStart = ({ state, dispatch }) => {\n    dispatch(setSel(state, { anchor: 0 }));\n    return true;\n};\n/**\nMove the selection to the end of the document.\n*/\nconst cursorDocEnd = ({ state, dispatch }) => {\n    dispatch(setSel(state, { anchor: state.doc.length }));\n    return true;\n};\n/**\nMove the selection head to the start of the document.\n*/\nconst selectDocStart = ({ state, dispatch }) => {\n    dispatch(setSel(state, { anchor: state.selection.main.anchor, head: 0 }));\n    return true;\n};\n/**\nMove the selection head to the end of the document.\n*/\nconst selectDocEnd = ({ state, dispatch }) => {\n    dispatch(setSel(state, { anchor: state.selection.main.anchor, head: state.doc.length }));\n    return true;\n};\n/**\nSelect the entire document.\n*/\nconst selectAll = ({ state, dispatch }) => {\n    dispatch(state.update({ selection: { anchor: 0, head: state.doc.length }, userEvent: \"select\" }));\n    return true;\n};\n/**\nExpand the selection to cover entire lines.\n*/\nconst selectLine = ({ state, dispatch }) => {\n    let ranges = selectedLineBlocks(state).map(({ from, to }) => EditorSelection.range(from, Math.min(to + 1, state.doc.length)));\n    dispatch(state.update({ selection: EditorSelection.create(ranges), userEvent: \"select\" }));\n    return true;\n};\n/**\nSelect the next syntactic construct that is larger than the\nselection. Note that this will only work insofar as the language\n[provider](https://codemirror.net/6/docs/ref/#language.language) you use builds up a full\nsyntax tree.\n*/\nconst selectParentSyntax = ({ state, dispatch }) => {\n    let selection = updateSel(state.selection, range => {\n        var _a;\n        let context = syntaxTree(state).resolveInner(range.head, 1);\n        while (!((context.from < range.from && context.to >= range.to) ||\n            (context.to > range.to && context.from <= range.from) ||\n            !((_a = context.parent) === null || _a === void 0 ? void 0 : _a.parent)))\n            context = context.parent;\n        return EditorSelection.range(context.to, context.from);\n    });\n    dispatch(setSel(state, selection));\n    return true;\n};\n/**\nSimplify the current selection. When multiple ranges are selected,\nreduce it to its main range. Otherwise, if the selection is\nnon-empty, convert it to a cursor selection.\n*/\nconst simplifySelection = ({ state, dispatch }) => {\n    let cur = state.selection, selection = null;\n    if (cur.ranges.length > 1)\n        selection = EditorSelection.create([cur.main]);\n    else if (!cur.main.empty)\n        selection = EditorSelection.create([EditorSelection.cursor(cur.main.head)]);\n    if (!selection)\n        return false;\n    dispatch(setSel(state, selection));\n    return true;\n};\nfunction deleteBy(target, by) {\n    if (target.state.readOnly)\n        return false;\n    let event = \"delete.selection\", { state } = target;\n    let changes = state.changeByRange(range => {\n        let { from, to } = range;\n        if (from == to) {\n            let towards = by(from);\n            if (towards < from) {\n                event = \"delete.backward\";\n                towards = skipAtomic(target, towards, false);\n            }\n            else if (towards > from) {\n                event = \"delete.forward\";\n                towards = skipAtomic(target, towards, true);\n            }\n            from = Math.min(from, towards);\n            to = Math.max(to, towards);\n        }\n        else {\n            from = skipAtomic(target, from, false);\n            to = skipAtomic(target, to, true);\n        }\n        return from == to ? { range } : { changes: { from, to }, range: EditorSelection.cursor(from) };\n    });\n    if (changes.changes.empty)\n        return false;\n    target.dispatch(state.update(changes, {\n        scrollIntoView: true,\n        userEvent: event,\n        effects: event == \"delete.selection\" ? EditorView.announce.of(state.phrase(\"Selection deleted\")) : undefined\n    }));\n    return true;\n}\nfunction skipAtomic(target, pos, forward) {\n    if (target instanceof EditorView)\n        for (let ranges of target.state.facet(EditorView.atomicRanges).map(f => f(target)))\n            ranges.between(pos, pos, (from, to) => {\n                if (from < pos && to > pos)\n                    pos = forward ? to : from;\n            });\n    return pos;\n}\nconst deleteByChar = (target, forward) => deleteBy(target, pos => {\n    let { state } = target, line = state.doc.lineAt(pos), before, targetPos;\n    if (!forward && pos > line.from && pos < line.from + 200 &&\n        !/[^ \\t]/.test(before = line.text.slice(0, pos - line.from))) {\n        if (before[before.length - 1] == \"\\t\")\n            return pos - 1;\n        let col = countColumn(before, state.tabSize), drop = col % getIndentUnit(state) || getIndentUnit(state);\n        for (let i = 0; i < drop && before[before.length - 1 - i] == \" \"; i++)\n            pos--;\n        targetPos = pos;\n    }\n    else {\n        targetPos = findClusterBreak(line.text, pos - line.from, forward, forward) + line.from;\n        if (targetPos == pos && line.number != (forward ? state.doc.lines : 1))\n            targetPos += forward ? 1 : -1;\n    }\n    return targetPos;\n});\n/**\nDelete the selection, or, for cursor selections, the character\nbefore the cursor.\n*/\nconst deleteCharBackward = view => deleteByChar(view, false);\n/**\nDelete the selection or the character after the cursor.\n*/\nconst deleteCharForward = view => deleteByChar(view, true);\nconst deleteByGroup = (target, forward) => deleteBy(target, start => {\n    let pos = start, { state } = target, line = state.doc.lineAt(pos);\n    let categorize = state.charCategorizer(pos);\n    for (let cat = null;;) {\n        if (pos == (forward ? line.to : line.from)) {\n            if (pos == start && line.number != (forward ? state.doc.lines : 1))\n                pos += forward ? 1 : -1;\n            break;\n        }\n        let next = findClusterBreak(line.text, pos - line.from, forward) + line.from;\n        let nextChar = line.text.slice(Math.min(pos, next) - line.from, Math.max(pos, next) - line.from);\n        let nextCat = categorize(nextChar);\n        if (cat != null && nextCat != cat)\n            break;\n        if (nextChar != \" \" || pos != start)\n            cat = nextCat;\n        pos = next;\n    }\n    return pos;\n});\n/**\nDelete the selection or backward until the end of the next\n[group](https://codemirror.net/6/docs/ref/#view.EditorView.moveByGroup), only skipping groups of\nwhitespace when they consist of a single space.\n*/\nconst deleteGroupBackward = target => deleteByGroup(target, false);\n/**\nDelete the selection or forward until the end of the next group.\n*/\nconst deleteGroupForward = target => deleteByGroup(target, true);\n/**\nDelete the selection, or, if it is a cursor selection, delete to\nthe end of the line. If the cursor is directly at the end of the\nline, delete the line break after it.\n*/\nconst deleteToLineEnd = view => deleteBy(view, pos => {\n    let lineEnd = view.lineBlockAt(pos).to;\n    return pos < lineEnd ? lineEnd : Math.min(view.state.doc.length, pos + 1);\n});\n/**\nDelete the selection, or, if it is a cursor selection, delete to\nthe start of the line. If the cursor is directly at the start of the\nline, delete the line break before it.\n*/\nconst deleteToLineStart = view => deleteBy(view, pos => {\n    let lineStart = view.lineBlockAt(pos).from;\n    return pos > lineStart ? lineStart : Math.max(0, pos - 1);\n});\n/**\nDelete all whitespace directly before a line end from the\ndocument.\n*/\nconst deleteTrailingWhitespace = ({ state, dispatch }) => {\n    if (state.readOnly)\n        return false;\n    let changes = [];\n    for (let pos = 0, prev = \"\", iter = state.doc.iter();;) {\n        iter.next();\n        if (iter.lineBreak || iter.done) {\n            let trailing = prev.search(/\\s+$/);\n            if (trailing > -1)\n                changes.push({ from: pos - (prev.length - trailing), to: pos });\n            if (iter.done)\n                break;\n            prev = \"\";\n        }\n        else {\n            prev = iter.value;\n        }\n        pos += iter.value.length;\n    }\n    if (!changes.length)\n        return false;\n    dispatch(state.update({ changes, userEvent: \"delete\" }));\n    return true;\n};\n/**\nReplace each selection range with a line break, leaving the cursor\non the line before the break.\n*/\nconst splitLine = ({ state, dispatch }) => {\n    if (state.readOnly)\n        return false;\n    let changes = state.changeByRange(range => {\n        return { changes: { from: range.from, to: range.to, insert: Text.of([\"\", \"\"]) },\n            range: EditorSelection.cursor(range.from) };\n    });\n    dispatch(state.update(changes, { scrollIntoView: true, userEvent: \"input\" }));\n    return true;\n};\n/**\nFlip the characters before and after the cursor(s).\n*/\nconst transposeChars = ({ state, dispatch }) => {\n    if (state.readOnly)\n        return false;\n    let changes = state.changeByRange(range => {\n        if (!range.empty || range.from == 0 || range.from == state.doc.length)\n            return { range };\n        let pos = range.from, line = state.doc.lineAt(pos);\n        let from = pos == line.from ? pos - 1 : findClusterBreak(line.text, pos - line.from, false) + line.from;\n        let to = pos == line.to ? pos + 1 : findClusterBreak(line.text, pos - line.from, true) + line.from;\n        return { changes: { from, to, insert: state.doc.slice(pos, to).append(state.doc.slice(from, pos)) },\n            range: EditorSelection.cursor(to) };\n    });\n    if (changes.changes.empty)\n        return false;\n    dispatch(state.update(changes, { scrollIntoView: true, userEvent: \"move.character\" }));\n    return true;\n};\nfunction selectedLineBlocks(state) {\n    let blocks = [], upto = -1;\n    for (let range of state.selection.ranges) {\n        let startLine = state.doc.lineAt(range.from), endLine = state.doc.lineAt(range.to);\n        if (!range.empty && range.to == endLine.from)\n            endLine = state.doc.lineAt(range.to - 1);\n        if (upto >= startLine.number) {\n            let prev = blocks[blocks.length - 1];\n            prev.to = endLine.to;\n            prev.ranges.push(range);\n        }\n        else {\n            blocks.push({ from: startLine.from, to: endLine.to, ranges: [range] });\n        }\n        upto = endLine.number + 1;\n    }\n    return blocks;\n}\nfunction moveLine(state, dispatch, forward) {\n    if (state.readOnly)\n        return false;\n    let changes = [], ranges = [];\n    for (let block of selectedLineBlocks(state)) {\n        if (forward ? block.to == state.doc.length : block.from == 0)\n            continue;\n        let nextLine = state.doc.lineAt(forward ? block.to + 1 : block.from - 1);\n        let size = nextLine.length + 1;\n        if (forward) {\n            changes.push({ from: block.to, to: nextLine.to }, { from: block.from, insert: nextLine.text + state.lineBreak });\n            for (let r of block.ranges)\n                ranges.push(EditorSelection.range(Math.min(state.doc.length, r.anchor + size), Math.min(state.doc.length, r.head + size)));\n        }\n        else {\n            changes.push({ from: nextLine.from, to: block.from }, { from: block.to, insert: state.lineBreak + nextLine.text });\n            for (let r of block.ranges)\n                ranges.push(EditorSelection.range(r.anchor - size, r.head - size));\n        }\n    }\n    if (!changes.length)\n        return false;\n    dispatch(state.update({\n        changes,\n        scrollIntoView: true,\n        selection: EditorSelection.create(ranges, state.selection.mainIndex),\n        userEvent: \"move.line\"\n    }));\n    return true;\n}\n/**\nMove the selected lines up one line.\n*/\nconst moveLineUp = ({ state, dispatch }) => moveLine(state, dispatch, false);\n/**\nMove the selected lines down one line.\n*/\nconst moveLineDown = ({ state, dispatch }) => moveLine(state, dispatch, true);\nfunction copyLine(state, dispatch, forward) {\n    if (state.readOnly)\n        return false;\n    let changes = [];\n    for (let block of selectedLineBlocks(state)) {\n        if (forward)\n            changes.push({ from: block.from, insert: state.doc.slice(block.from, block.to) + state.lineBreak });\n        else\n            changes.push({ from: block.to, insert: state.lineBreak + state.doc.slice(block.from, block.to) });\n    }\n    dispatch(state.update({ changes, scrollIntoView: true, userEvent: \"input.copyline\" }));\n    return true;\n}\n/**\nCreate a copy of the selected lines. Keep the selection in the top copy.\n*/\nconst copyLineUp = ({ state, dispatch }) => copyLine(state, dispatch, false);\n/**\nCreate a copy of the selected lines. Keep the selection in the bottom copy.\n*/\nconst copyLineDown = ({ state, dispatch }) => copyLine(state, dispatch, true);\n/**\nDelete selected lines.\n*/\nconst deleteLine = view => {\n    if (view.state.readOnly)\n        return false;\n    let { state } = view, changes = state.changes(selectedLineBlocks(state).map(({ from, to }) => {\n        if (from > 0)\n            from--;\n        else if (to < state.doc.length)\n            to++;\n        return { from, to };\n    }));\n    let selection = updateSel(state.selection, range => view.moveVertically(range, true)).map(changes);\n    view.dispatch({ changes, selection, scrollIntoView: true, userEvent: \"delete.line\" });\n    return true;\n};\n/**\nReplace the selection with a newline.\n*/\nconst insertNewline = ({ state, dispatch }) => {\n    dispatch(state.update(state.replaceSelection(state.lineBreak), { scrollIntoView: true, userEvent: \"input\" }));\n    return true;\n};\nfunction isBetweenBrackets(state, pos) {\n    if (/\\(\\)|\\[\\]|\\{\\}/.test(state.sliceDoc(pos - 1, pos + 1)))\n        return { from: pos, to: pos };\n    let context = syntaxTree(state).resolveInner(pos);\n    let before = context.childBefore(pos), after = context.childAfter(pos), closedBy;\n    if (before && after && before.to <= pos && after.from >= pos &&\n        (closedBy = before.type.prop(NodeProp.closedBy)) && closedBy.indexOf(after.name) > -1 &&\n        state.doc.lineAt(before.to).from == state.doc.lineAt(after.from).from)\n        return { from: before.to, to: after.from };\n    return null;\n}\n/**\nReplace the selection with a newline and indent the newly created\nline(s). If the current line consists only of whitespace, this\nwill also delete that whitespace. When the cursor is between\nmatching brackets, an additional newline will be inserted after\nthe cursor.\n*/\nconst insertNewlineAndIndent = /*@__PURE__*/newlineAndIndent(false);\n/**\nCreate a blank, indented line below the current line.\n*/\nconst insertBlankLine = /*@__PURE__*/newlineAndIndent(true);\nfunction newlineAndIndent(atEof) {\n    return ({ state, dispatch }) => {\n        if (state.readOnly)\n            return false;\n        let changes = state.changeByRange(range => {\n            let { from, to } = range, line = state.doc.lineAt(from);\n            let explode = !atEof && from == to && isBetweenBrackets(state, from);\n            if (atEof)\n                from = to = (to <= line.to ? line : state.doc.lineAt(to)).to;\n            let cx = new IndentContext(state, { simulateBreak: from, simulateDoubleBreak: !!explode });\n            let indent = getIndentation(cx, from);\n            if (indent == null)\n                indent = /^\\s*/.exec(state.doc.lineAt(from).text)[0].length;\n            while (to < line.to && /\\s/.test(line.text[to - line.from]))\n                to++;\n            if (explode)\n                ({ from, to } = explode);\n            else if (from > line.from && from < line.from + 100 && !/\\S/.test(line.text.slice(0, from)))\n                from = line.from;\n            let insert = [\"\", indentString(state, indent)];\n            if (explode)\n                insert.push(indentString(state, cx.lineIndent(line.from, -1)));\n            return { changes: { from, to, insert: Text.of(insert) },\n                range: EditorSelection.cursor(from + 1 + insert[1].length) };\n        });\n        dispatch(state.update(changes, { scrollIntoView: true, userEvent: \"input\" }));\n        return true;\n    };\n}\nfunction changeBySelectedLine(state, f) {\n    let atLine = -1;\n    return state.changeByRange(range => {\n        let changes = [];\n        for (let pos = range.from; pos <= range.to;) {\n            let line = state.doc.lineAt(pos);\n            if (line.number > atLine && (range.empty || range.to > line.from)) {\n                f(line, changes, range);\n                atLine = line.number;\n            }\n            pos = line.to + 1;\n        }\n        let changeSet = state.changes(changes);\n        return { changes,\n            range: EditorSelection.range(changeSet.mapPos(range.anchor, 1), changeSet.mapPos(range.head, 1)) };\n    });\n}\n/**\nAuto-indent the selected lines. This uses the [indentation service\nfacet](https://codemirror.net/6/docs/ref/#language.indentService) as source for auto-indent\ninformation.\n*/\nconst indentSelection = ({ state, dispatch }) => {\n    if (state.readOnly)\n        return false;\n    let updated = Object.create(null);\n    let context = new IndentContext(state, { overrideIndentation: start => {\n            let found = updated[start];\n            return found == null ? -1 : found;\n        } });\n    let changes = changeBySelectedLine(state, (line, changes, range) => {\n        let indent = getIndentation(context, line.from);\n        if (indent == null)\n            return;\n        if (!/\\S/.test(line.text))\n            indent = 0;\n        let cur = /^\\s*/.exec(line.text)[0];\n        let norm = indentString(state, indent);\n        if (cur != norm || range.from < line.from + cur.length) {\n            updated[line.from] = indent;\n            changes.push({ from: line.from, to: line.from + cur.length, insert: norm });\n        }\n    });\n    if (!changes.changes.empty)\n        dispatch(state.update(changes, { userEvent: \"indent\" }));\n    return true;\n};\n/**\nAdd a [unit](https://codemirror.net/6/docs/ref/#language.indentUnit) of indentation to all selected\nlines.\n*/\nconst indentMore = ({ state, dispatch }) => {\n    if (state.readOnly)\n        return false;\n    dispatch(state.update(changeBySelectedLine(state, (line, changes) => {\n        changes.push({ from: line.from, insert: state.facet(indentUnit) });\n    }), { userEvent: \"input.indent\" }));\n    return true;\n};\n/**\nRemove a [unit](https://codemirror.net/6/docs/ref/#language.indentUnit) of indentation from all\nselected lines.\n*/\nconst indentLess = ({ state, dispatch }) => {\n    if (state.readOnly)\n        return false;\n    dispatch(state.update(changeBySelectedLine(state, (line, changes) => {\n        let space = /^\\s*/.exec(line.text)[0];\n        if (!space)\n            return;\n        let col = countColumn(space, state.tabSize), keep = 0;\n        let insert = indentString(state, Math.max(0, col - getIndentUnit(state)));\n        while (keep < space.length && keep < insert.length && space.charCodeAt(keep) == insert.charCodeAt(keep))\n            keep++;\n        changes.push({ from: line.from + keep, to: line.from + space.length, insert: insert.slice(keep) });\n    }), { userEvent: \"delete.dedent\" }));\n    return true;\n};\n/**\nInsert a tab character at the cursor or, if something is selected,\nuse [`indentMore`](https://codemirror.net/6/docs/ref/#commands.indentMore) to indent the entire\nselection.\n*/\nconst insertTab = ({ state, dispatch }) => {\n    if (state.selection.ranges.some(r => !r.empty))\n        return indentMore({ state, dispatch });\n    dispatch(state.update(state.replaceSelection(\"\\t\"), { scrollIntoView: true, userEvent: \"input\" }));\n    return true;\n};\n/**\nArray of key bindings containing the Emacs-style bindings that are\navailable on macOS by default.\n\n - Ctrl-b: [`cursorCharLeft`](https://codemirror.net/6/docs/ref/#commands.cursorCharLeft) ([`selectCharLeft`](https://codemirror.net/6/docs/ref/#commands.selectCharLeft) with Shift)\n - Ctrl-f: [`cursorCharRight`](https://codemirror.net/6/docs/ref/#commands.cursorCharRight) ([`selectCharRight`](https://codemirror.net/6/docs/ref/#commands.selectCharRight) with Shift)\n - Ctrl-p: [`cursorLineUp`](https://codemirror.net/6/docs/ref/#commands.cursorLineUp) ([`selectLineUp`](https://codemirror.net/6/docs/ref/#commands.selectLineUp) with Shift)\n - Ctrl-n: [`cursorLineDown`](https://codemirror.net/6/docs/ref/#commands.cursorLineDown) ([`selectLineDown`](https://codemirror.net/6/docs/ref/#commands.selectLineDown) with Shift)\n - Ctrl-a: [`cursorLineStart`](https://codemirror.net/6/docs/ref/#commands.cursorLineStart) ([`selectLineStart`](https://codemirror.net/6/docs/ref/#commands.selectLineStart) with Shift)\n - Ctrl-e: [`cursorLineEnd`](https://codemirror.net/6/docs/ref/#commands.cursorLineEnd) ([`selectLineEnd`](https://codemirror.net/6/docs/ref/#commands.selectLineEnd) with Shift)\n - Ctrl-d: [`deleteCharForward`](https://codemirror.net/6/docs/ref/#commands.deleteCharForward)\n - Ctrl-h: [`deleteCharBackward`](https://codemirror.net/6/docs/ref/#commands.deleteCharBackward)\n - Ctrl-k: [`deleteToLineEnd`](https://codemirror.net/6/docs/ref/#commands.deleteToLineEnd)\n - Ctrl-Alt-h: [`deleteGroupBackward`](https://codemirror.net/6/docs/ref/#commands.deleteGroupBackward)\n - Ctrl-o: [`splitLine`](https://codemirror.net/6/docs/ref/#commands.splitLine)\n - Ctrl-t: [`transposeChars`](https://codemirror.net/6/docs/ref/#commands.transposeChars)\n - Ctrl-v: [`cursorPageDown`](https://codemirror.net/6/docs/ref/#commands.cursorPageDown)\n - Alt-v: [`cursorPageUp`](https://codemirror.net/6/docs/ref/#commands.cursorPageUp)\n*/\nconst emacsStyleKeymap = [\n    { key: \"Ctrl-b\", run: cursorCharLeft, shift: selectCharLeft, preventDefault: true },\n    { key: \"Ctrl-f\", run: cursorCharRight, shift: selectCharRight },\n    { key: \"Ctrl-p\", run: cursorLineUp, shift: selectLineUp },\n    { key: \"Ctrl-n\", run: cursorLineDown, shift: selectLineDown },\n    { key: \"Ctrl-a\", run: cursorLineStart, shift: selectLineStart },\n    { key: \"Ctrl-e\", run: cursorLineEnd, shift: selectLineEnd },\n    { key: \"Ctrl-d\", run: deleteCharForward },\n    { key: \"Ctrl-h\", run: deleteCharBackward },\n    { key: \"Ctrl-k\", run: deleteToLineEnd },\n    { key: \"Ctrl-Alt-h\", run: deleteGroupBackward },\n    { key: \"Ctrl-o\", run: splitLine },\n    { key: \"Ctrl-t\", run: transposeChars },\n    { key: \"Ctrl-v\", run: cursorPageDown },\n];\n/**\nAn array of key bindings closely sticking to platform-standard or\nwidely used bindings. (This includes the bindings from\n[`emacsStyleKeymap`](https://codemirror.net/6/docs/ref/#commands.emacsStyleKeymap), with their `key`\nproperty changed to `mac`.)\n\n - ArrowLeft: [`cursorCharLeft`](https://codemirror.net/6/docs/ref/#commands.cursorCharLeft) ([`selectCharLeft`](https://codemirror.net/6/docs/ref/#commands.selectCharLeft) with Shift)\n - ArrowRight: [`cursorCharRight`](https://codemirror.net/6/docs/ref/#commands.cursorCharRight) ([`selectCharRight`](https://codemirror.net/6/docs/ref/#commands.selectCharRight) with Shift)\n - Ctrl-ArrowLeft (Alt-ArrowLeft on macOS): [`cursorGroupLeft`](https://codemirror.net/6/docs/ref/#commands.cursorGroupLeft) ([`selectGroupLeft`](https://codemirror.net/6/docs/ref/#commands.selectGroupLeft) with Shift)\n - Ctrl-ArrowRight (Alt-ArrowRight on macOS): [`cursorGroupRight`](https://codemirror.net/6/docs/ref/#commands.cursorGroupRight) ([`selectGroupRight`](https://codemirror.net/6/docs/ref/#commands.selectGroupRight) with Shift)\n - Cmd-ArrowLeft (on macOS): [`cursorLineStart`](https://codemirror.net/6/docs/ref/#commands.cursorLineStart) ([`selectLineStart`](https://codemirror.net/6/docs/ref/#commands.selectLineStart) with Shift)\n - Cmd-ArrowRight (on macOS): [`cursorLineEnd`](https://codemirror.net/6/docs/ref/#commands.cursorLineEnd) ([`selectLineEnd`](https://codemirror.net/6/docs/ref/#commands.selectLineEnd) with Shift)\n - ArrowUp: [`cursorLineUp`](https://codemirror.net/6/docs/ref/#commands.cursorLineUp) ([`selectLineUp`](https://codemirror.net/6/docs/ref/#commands.selectLineUp) with Shift)\n - ArrowDown: [`cursorLineDown`](https://codemirror.net/6/docs/ref/#commands.cursorLineDown) ([`selectLineDown`](https://codemirror.net/6/docs/ref/#commands.selectLineDown) with Shift)\n - Cmd-ArrowUp (on macOS): [`cursorDocStart`](https://codemirror.net/6/docs/ref/#commands.cursorDocStart) ([`selectDocStart`](https://codemirror.net/6/docs/ref/#commands.selectDocStart) with Shift)\n - Cmd-ArrowDown (on macOS): [`cursorDocEnd`](https://codemirror.net/6/docs/ref/#commands.cursorDocEnd) ([`selectDocEnd`](https://codemirror.net/6/docs/ref/#commands.selectDocEnd) with Shift)\n - Ctrl-ArrowUp (on macOS): [`cursorPageUp`](https://codemirror.net/6/docs/ref/#commands.cursorPageUp) ([`selectPageUp`](https://codemirror.net/6/docs/ref/#commands.selectPageUp) with Shift)\n - Ctrl-ArrowDown (on macOS): [`cursorPageDown`](https://codemirror.net/6/docs/ref/#commands.cursorPageDown) ([`selectPageDown`](https://codemirror.net/6/docs/ref/#commands.selectPageDown) with Shift)\n - PageUp: [`cursorPageUp`](https://codemirror.net/6/docs/ref/#commands.cursorPageUp) ([`selectPageUp`](https://codemirror.net/6/docs/ref/#commands.selectPageUp) with Shift)\n - PageDown: [`cursorPageDown`](https://codemirror.net/6/docs/ref/#commands.cursorPageDown) ([`selectPageDown`](https://codemirror.net/6/docs/ref/#commands.selectPageDown) with Shift)\n - Home: [`cursorLineBoundaryBackward`](https://codemirror.net/6/docs/ref/#commands.cursorLineBoundaryBackward) ([`selectLineBoundaryBackward`](https://codemirror.net/6/docs/ref/#commands.selectLineBoundaryBackward) with Shift)\n - End: [`cursorLineBoundaryForward`](https://codemirror.net/6/docs/ref/#commands.cursorLineBoundaryForward) ([`selectLineBoundaryForward`](https://codemirror.net/6/docs/ref/#commands.selectLineBoundaryForward) with Shift)\n - Ctrl-Home (Cmd-Home on macOS): [`cursorDocStart`](https://codemirror.net/6/docs/ref/#commands.cursorDocStart) ([`selectDocStart`](https://codemirror.net/6/docs/ref/#commands.selectDocStart) with Shift)\n - Ctrl-End (Cmd-Home on macOS): [`cursorDocEnd`](https://codemirror.net/6/docs/ref/#commands.cursorDocEnd) ([`selectDocEnd`](https://codemirror.net/6/docs/ref/#commands.selectDocEnd) with Shift)\n - Enter: [`insertNewlineAndIndent`](https://codemirror.net/6/docs/ref/#commands.insertNewlineAndIndent)\n - Ctrl-a (Cmd-a on macOS): [`selectAll`](https://codemirror.net/6/docs/ref/#commands.selectAll)\n - Backspace: [`deleteCharBackward`](https://codemirror.net/6/docs/ref/#commands.deleteCharBackward)\n - Delete: [`deleteCharForward`](https://codemirror.net/6/docs/ref/#commands.deleteCharForward)\n - Ctrl-Backspace (Alt-Backspace on macOS): [`deleteGroupBackward`](https://codemirror.net/6/docs/ref/#commands.deleteGroupBackward)\n - Ctrl-Delete (Alt-Delete on macOS): [`deleteGroupForward`](https://codemirror.net/6/docs/ref/#commands.deleteGroupForward)\n - Cmd-Backspace (macOS): [`deleteToLineStart`](https://codemirror.net/6/docs/ref/#commands.deleteToLineStart).\n - Cmd-Delete (macOS): [`deleteToLineEnd`](https://codemirror.net/6/docs/ref/#commands.deleteToLineEnd).\n*/\nconst standardKeymap = /*@__PURE__*/[\n    { key: \"ArrowLeft\", run: cursorCharLeft, shift: selectCharLeft, preventDefault: true },\n    { key: \"Mod-ArrowLeft\", mac: \"Alt-ArrowLeft\", run: cursorGroupLeft, shift: selectGroupLeft, preventDefault: true },\n    { mac: \"Cmd-ArrowLeft\", run: cursorLineBoundaryLeft, shift: selectLineBoundaryLeft, preventDefault: true },\n    { key: \"ArrowRight\", run: cursorCharRight, shift: selectCharRight, preventDefault: true },\n    { key: \"Mod-ArrowRight\", mac: \"Alt-ArrowRight\", run: cursorGroupRight, shift: selectGroupRight, preventDefault: true },\n    { mac: \"Cmd-ArrowRight\", run: cursorLineBoundaryRight, shift: selectLineBoundaryRight, preventDefault: true },\n    { key: \"ArrowUp\", run: cursorLineUp, shift: selectLineUp, preventDefault: true },\n    { mac: \"Cmd-ArrowUp\", run: cursorDocStart, shift: selectDocStart },\n    { mac: \"Ctrl-ArrowUp\", run: cursorPageUp, shift: selectPageUp },\n    { key: \"ArrowDown\", run: cursorLineDown, shift: selectLineDown, preventDefault: true },\n    { mac: \"Cmd-ArrowDown\", run: cursorDocEnd, shift: selectDocEnd },\n    { mac: \"Ctrl-ArrowDown\", run: cursorPageDown, shift: selectPageDown },\n    { key: \"PageUp\", run: cursorPageUp, shift: selectPageUp },\n    { key: \"PageDown\", run: cursorPageDown, shift: selectPageDown },\n    { key: \"Home\", run: cursorLineBoundaryBackward, shift: selectLineBoundaryBackward, preventDefault: true },\n    { key: \"Mod-Home\", run: cursorDocStart, shift: selectDocStart },\n    { key: \"End\", run: cursorLineBoundaryForward, shift: selectLineBoundaryForward, preventDefault: true },\n    { key: \"Mod-End\", run: cursorDocEnd, shift: selectDocEnd },\n    { key: \"Enter\", run: insertNewlineAndIndent },\n    { key: \"Mod-a\", run: selectAll },\n    { key: \"Backspace\", run: deleteCharBackward, shift: deleteCharBackward },\n    { key: \"Delete\", run: deleteCharForward },\n    { key: \"Mod-Backspace\", mac: \"Alt-Backspace\", run: deleteGroupBackward },\n    { key: \"Mod-Delete\", mac: \"Alt-Delete\", run: deleteGroupForward },\n    { mac: \"Mod-Backspace\", run: deleteToLineStart },\n    { mac: \"Mod-Delete\", run: deleteToLineEnd }\n].concat(/*@__PURE__*/emacsStyleKeymap.map(b => ({ mac: b.key, run: b.run, shift: b.shift })));\n/**\nThe default keymap. Includes all bindings from\n[`standardKeymap`](https://codemirror.net/6/docs/ref/#commands.standardKeymap) plus the following:\n\n- Alt-ArrowLeft (Ctrl-ArrowLeft on macOS): [`cursorSyntaxLeft`](https://codemirror.net/6/docs/ref/#commands.cursorSyntaxLeft) ([`selectSyntaxLeft`](https://codemirror.net/6/docs/ref/#commands.selectSyntaxLeft) with Shift)\n- Alt-ArrowRight (Ctrl-ArrowRight on macOS): [`cursorSyntaxRight`](https://codemirror.net/6/docs/ref/#commands.cursorSyntaxRight) ([`selectSyntaxRight`](https://codemirror.net/6/docs/ref/#commands.selectSyntaxRight) with Shift)\n- Alt-ArrowUp: [`moveLineUp`](https://codemirror.net/6/docs/ref/#commands.moveLineUp)\n- Alt-ArrowDown: [`moveLineDown`](https://codemirror.net/6/docs/ref/#commands.moveLineDown)\n- Shift-Alt-ArrowUp: [`copyLineUp`](https://codemirror.net/6/docs/ref/#commands.copyLineUp)\n- Shift-Alt-ArrowDown: [`copyLineDown`](https://codemirror.net/6/docs/ref/#commands.copyLineDown)\n- Escape: [`simplifySelection`](https://codemirror.net/6/docs/ref/#commands.simplifySelection)\n- Ctrl-Enter (Cmd-Enter on macOS): [`insertBlankLine`](https://codemirror.net/6/docs/ref/#commands.insertBlankLine)\n- Alt-l (Ctrl-l on macOS): [`selectLine`](https://codemirror.net/6/docs/ref/#commands.selectLine)\n- Ctrl-i (Cmd-i on macOS): [`selectParentSyntax`](https://codemirror.net/6/docs/ref/#commands.selectParentSyntax)\n- Ctrl-[ (Cmd-[ on macOS): [`indentLess`](https://codemirror.net/6/docs/ref/#commands.indentLess)\n- Ctrl-] (Cmd-] on macOS): [`indentMore`](https://codemirror.net/6/docs/ref/#commands.indentMore)\n- Ctrl-Alt-\\\\ (Cmd-Alt-\\\\ on macOS): [`indentSelection`](https://codemirror.net/6/docs/ref/#commands.indentSelection)\n- Shift-Ctrl-k (Shift-Cmd-k on macOS): [`deleteLine`](https://codemirror.net/6/docs/ref/#commands.deleteLine)\n- Shift-Ctrl-\\\\ (Shift-Cmd-\\\\ on macOS): [`cursorMatchingBracket`](https://codemirror.net/6/docs/ref/#commands.cursorMatchingBracket)\n- Ctrl-/ (Cmd-/ on macOS): [`toggleComment`](https://codemirror.net/6/docs/ref/#commands.toggleComment).\n- Shift-Alt-a: [`toggleBlockComment`](https://codemirror.net/6/docs/ref/#commands.toggleBlockComment).\n*/\nconst defaultKeymap = /*@__PURE__*/[\n    { key: \"Alt-ArrowLeft\", mac: \"Ctrl-ArrowLeft\", run: cursorSyntaxLeft, shift: selectSyntaxLeft },\n    { key: \"Alt-ArrowRight\", mac: \"Ctrl-ArrowRight\", run: cursorSyntaxRight, shift: selectSyntaxRight },\n    { key: \"Alt-ArrowUp\", run: moveLineUp },\n    { key: \"Shift-Alt-ArrowUp\", run: copyLineUp },\n    { key: \"Alt-ArrowDown\", run: moveLineDown },\n    { key: \"Shift-Alt-ArrowDown\", run: copyLineDown },\n    { key: \"Escape\", run: simplifySelection },\n    { key: \"Mod-Enter\", run: insertBlankLine },\n    { key: \"Alt-l\", mac: \"Ctrl-l\", run: selectLine },\n    { key: \"Mod-i\", run: selectParentSyntax, preventDefault: true },\n    { key: \"Mod-[\", run: indentLess },\n    { key: \"Mod-]\", run: indentMore },\n    { key: \"Mod-Alt-\\\\\", run: indentSelection },\n    { key: \"Shift-Mod-k\", run: deleteLine },\n    { key: \"Shift-Mod-\\\\\", run: cursorMatchingBracket },\n    { key: \"Mod-/\", run: toggleComment },\n    { key: \"Alt-A\", run: toggleBlockComment }\n].concat(standardKeymap);\n/**\nA binding that binds Tab to [`indentMore`](https://codemirror.net/6/docs/ref/#commands.indentMore) and\nShift-Tab to [`indentLess`](https://codemirror.net/6/docs/ref/#commands.indentLess).\nPlease see the [Tab example](../../examples/tab/) before using\nthis.\n*/\nconst indentWithTab = { key: \"Tab\", run: indentMore, shift: indentLess };\n\nexport { blockComment, blockUncomment, copyLineDown, copyLineUp, cursorCharBackward, cursorCharForward, cursorCharLeft, cursorCharRight, cursorDocEnd, cursorDocStart, cursorGroupBackward, cursorGroupForward, cursorGroupLeft, cursorGroupRight, cursorLineBoundaryBackward, cursorLineBoundaryForward, cursorLineBoundaryLeft, cursorLineBoundaryRight, cursorLineDown, cursorLineEnd, cursorLineStart, cursorLineUp, cursorMatchingBracket, cursorPageDown, cursorPageUp, cursorSubwordBackward, cursorSubwordForward, cursorSyntaxLeft, cursorSyntaxRight, defaultKeymap, deleteCharBackward, deleteCharForward, deleteGroupBackward, deleteGroupForward, deleteLine, deleteToLineEnd, deleteToLineStart, deleteTrailingWhitespace, emacsStyleKeymap, history, historyField, historyKeymap, indentLess, indentMore, indentSelection, indentWithTab, insertBlankLine, insertNewline, insertNewlineAndIndent, insertTab, invertedEffects, isolateHistory, lineComment, lineUncomment, moveLineDown, moveLineUp, redo, redoDepth, redoSelection, selectAll, selectCharBackward, selectCharForward, selectCharLeft, selectCharRight, selectDocEnd, selectDocStart, selectGroupBackward, selectGroupForward, selectGroupLeft, selectGroupRight, selectLine, selectLineBoundaryBackward, selectLineBoundaryForward, selectLineBoundaryLeft, selectLineBoundaryRight, selectLineDown, selectLineEnd, selectLineStart, selectLineUp, selectMatchingBracket, selectPageDown, selectPageUp, selectParentSyntax, selectSubwordBackward, selectSubwordForward, selectSyntaxLeft, selectSyntaxRight, simplifySelection, splitLine, standardKeymap, toggleBlockComment, toggleBlockCommentByLine, toggleComment, toggleLineComment, transposeChars, undo, undoDepth, undoSelection };\n","import { parser } from '@lezer/javascript';\nimport { syntaxTree, LRLanguage, indentNodeProp, continuedIndent, flatIndent, delimitedIndent, foldNodeProp, foldInside, defineLanguageFacet, sublanguageProp, LanguageSupport } from '@codemirror/language';\nimport { EditorSelection } from '@codemirror/state';\nimport { EditorView } from '@codemirror/view';\nimport { snippetCompletion, ifNotIn, completeFromList } from '@codemirror/autocomplete';\nimport { NodeWeakMap, IterMode } from '@lezer/common';\n\n/**\nA collection of JavaScript-related\n[snippets](https://codemirror.net/6/docs/ref/#autocomplete.snippet).\n*/\nconst snippets = [\n    /*@__PURE__*/snippetCompletion(\"function ${name}(${params}) {\\n\\t${}\\n}\", {\n        label: \"function\",\n        detail: \"definition\",\n        type: \"keyword\"\n    }),\n    /*@__PURE__*/snippetCompletion(\"for (let ${index} = 0; ${index} < ${bound}; ${index}++) {\\n\\t${}\\n}\", {\n        label: \"for\",\n        detail: \"loop\",\n        type: \"keyword\"\n    }),\n    /*@__PURE__*/snippetCompletion(\"for (let ${name} of ${collection}) {\\n\\t${}\\n}\", {\n        label: \"for\",\n        detail: \"of loop\",\n        type: \"keyword\"\n    }),\n    /*@__PURE__*/snippetCompletion(\"do {\\n\\t${}\\n} while (${})\", {\n        label: \"do\",\n        detail: \"loop\",\n        type: \"keyword\"\n    }),\n    /*@__PURE__*/snippetCompletion(\"while (${}) {\\n\\t${}\\n}\", {\n        label: \"while\",\n        detail: \"loop\",\n        type: \"keyword\"\n    }),\n    /*@__PURE__*/snippetCompletion(\"try {\\n\\t${}\\n} catch (${error}) {\\n\\t${}\\n}\", {\n        label: \"try\",\n        detail: \"/ catch block\",\n        type: \"keyword\"\n    }),\n    /*@__PURE__*/snippetCompletion(\"if (${}) {\\n\\t${}\\n}\", {\n        label: \"if\",\n        detail: \"block\",\n        type: \"keyword\"\n    }),\n    /*@__PURE__*/snippetCompletion(\"if (${}) {\\n\\t${}\\n} else {\\n\\t${}\\n}\", {\n        label: \"if\",\n        detail: \"/ else block\",\n        type: \"keyword\"\n    }),\n    /*@__PURE__*/snippetCompletion(\"class ${name} {\\n\\tconstructor(${params}) {\\n\\t\\t${}\\n\\t}\\n}\", {\n        label: \"class\",\n        detail: \"definition\",\n        type: \"keyword\"\n    }),\n    /*@__PURE__*/snippetCompletion(\"import {${names}} from \\\"${module}\\\"\\n${}\", {\n        label: \"import\",\n        detail: \"named\",\n        type: \"keyword\"\n    }),\n    /*@__PURE__*/snippetCompletion(\"import ${name} from \\\"${module}\\\"\\n${}\", {\n        label: \"import\",\n        detail: \"default\",\n        type: \"keyword\"\n    })\n];\n/**\nA collection of snippet completions for TypeScript. Includes the\nJavaScript [snippets](https://codemirror.net/6/docs/ref/#lang-javascript.snippets).\n*/\nconst typescriptSnippets = /*@__PURE__*/snippets.concat([\n    /*@__PURE__*/snippetCompletion(\"interface ${name} {\\n\\t${}\\n}\", {\n        label: \"interface\",\n        detail: \"definition\",\n        type: \"keyword\"\n    }),\n    /*@__PURE__*/snippetCompletion(\"type ${name} = ${type}\", {\n        label: \"type\",\n        detail: \"definition\",\n        type: \"keyword\"\n    }),\n    /*@__PURE__*/snippetCompletion(\"enum ${name} {\\n\\t${}\\n}\", {\n        label: \"enum\",\n        detail: \"definition\",\n        type: \"keyword\"\n    })\n]);\n\nconst cache = /*@__PURE__*/new NodeWeakMap();\nconst ScopeNodes = /*@__PURE__*/new Set([\n    \"Script\", \"Block\",\n    \"FunctionExpression\", \"FunctionDeclaration\", \"ArrowFunction\", \"MethodDeclaration\",\n    \"ForStatement\"\n]);\nfunction defID(type) {\n    return (node, def) => {\n        let id = node.node.getChild(\"VariableDefinition\");\n        if (id)\n            def(id, type);\n        return true;\n    };\n}\nconst functionContext = [\"FunctionDeclaration\"];\nconst gatherCompletions = {\n    FunctionDeclaration: /*@__PURE__*/defID(\"function\"),\n    ClassDeclaration: /*@__PURE__*/defID(\"class\"),\n    ClassExpression: () => true,\n    EnumDeclaration: /*@__PURE__*/defID(\"constant\"),\n    TypeAliasDeclaration: /*@__PURE__*/defID(\"type\"),\n    NamespaceDeclaration: /*@__PURE__*/defID(\"namespace\"),\n    VariableDefinition(node, def) { if (!node.matchContext(functionContext))\n        def(node, \"variable\"); },\n    TypeDefinition(node, def) { def(node, \"type\"); },\n    __proto__: null\n};\nfunction getScope(doc, node) {\n    let cached = cache.get(node);\n    if (cached)\n        return cached;\n    let completions = [], top = true;\n    function def(node, type) {\n        let name = doc.sliceString(node.from, node.to);\n        completions.push({ label: name, type });\n    }\n    node.cursor(IterMode.IncludeAnonymous).iterate(node => {\n        if (top) {\n            top = false;\n        }\n        else if (node.name) {\n            let gather = gatherCompletions[node.name];\n            if (gather && gather(node, def) || ScopeNodes.has(node.name))\n                return false;\n        }\n        else if (node.to - node.from > 8192) {\n            // Allow caching for bigger internal nodes\n            for (let c of getScope(doc, node.node))\n                completions.push(c);\n            return false;\n        }\n    });\n    cache.set(node, completions);\n    return completions;\n}\nconst Identifier = /^[\\w$\\xa1-\\uffff][\\w$\\d\\xa1-\\uffff]*$/;\nconst dontComplete = [\n    \"TemplateString\", \"String\", \"RegExp\",\n    \"LineComment\", \"BlockComment\",\n    \"VariableDefinition\", \"TypeDefinition\", \"Label\",\n    \"PropertyDefinition\", \"PropertyName\",\n    \"PrivatePropertyDefinition\", \"PrivatePropertyName\",\n    \".\", \"?.\"\n];\n/**\nCompletion source that looks up locally defined names in\nJavaScript code.\n*/\nfunction localCompletionSource(context) {\n    let inner = syntaxTree(context.state).resolveInner(context.pos, -1);\n    if (dontComplete.indexOf(inner.name) > -1)\n        return null;\n    let isWord = inner.name == \"VariableName\" ||\n        inner.to - inner.from < 20 && Identifier.test(context.state.sliceDoc(inner.from, inner.to));\n    if (!isWord && !context.explicit)\n        return null;\n    let options = [];\n    for (let pos = inner; pos; pos = pos.parent) {\n        if (ScopeNodes.has(pos.name))\n            options = options.concat(getScope(context.state.doc, pos));\n    }\n    return {\n        options,\n        from: isWord ? inner.from : context.pos,\n        validFor: Identifier\n    };\n}\nfunction pathFor(read, member, name) {\n    var _a;\n    let path = [];\n    for (;;) {\n        let obj = member.firstChild, prop;\n        if ((obj === null || obj === void 0 ? void 0 : obj.name) == \"VariableName\") {\n            path.push(read(obj));\n            return { path: path.reverse(), name };\n        }\n        else if ((obj === null || obj === void 0 ? void 0 : obj.name) == \"MemberExpression\" && ((_a = (prop = obj.lastChild)) === null || _a === void 0 ? void 0 : _a.name) == \"PropertyName\") {\n            path.push(read(prop));\n            member = obj;\n        }\n        else {\n            return null;\n        }\n    }\n}\n/**\nHelper function for defining JavaScript completion sources. It\nreturns the completable name and object path for a completion\ncontext, or null if no name/property completion should happen at\nthat position. For example, when completing after `a.b.c` it will\nreturn `{path: [\"a\", \"b\"], name: \"c\"}`. When completing after `x`\nit will return `{path: [], name: \"x\"}`. When not in a property or\nname, it will return null if `context.explicit` is false, and\n`{path: [], name: \"\"}` otherwise.\n*/\nfunction completionPath(context) {\n    let read = (node) => context.state.doc.sliceString(node.from, node.to);\n    let inner = syntaxTree(context.state).resolveInner(context.pos, -1);\n    if (inner.name == \"PropertyName\") {\n        return pathFor(read, inner.parent, read(inner));\n    }\n    else if ((inner.name == \".\" || inner.name == \"?.\") && inner.parent.name == \"MemberExpression\") {\n        return pathFor(read, inner.parent, \"\");\n    }\n    else if (dontComplete.indexOf(inner.name) > -1) {\n        return null;\n    }\n    else if (inner.name == \"VariableName\" || inner.to - inner.from < 20 && Identifier.test(read(inner))) {\n        return { path: [], name: read(inner) };\n    }\n    else if (inner.name == \"MemberExpression\") {\n        return pathFor(read, inner, \"\");\n    }\n    else {\n        return context.explicit ? { path: [], name: \"\" } : null;\n    }\n}\nfunction enumeratePropertyCompletions(obj, top) {\n    let options = [], seen = new Set;\n    for (let depth = 0;; depth++) {\n        for (let name of (Object.getOwnPropertyNames || Object.keys)(obj)) {\n            if (!/^[a-zA-Z_$\\xaa-\\uffdc][\\w$\\xaa-\\uffdc]*$/.test(name) || seen.has(name))\n                continue;\n            seen.add(name);\n            let value;\n            try {\n                value = obj[name];\n            }\n            catch (_) {\n                continue;\n            }\n            options.push({\n                label: name,\n                type: typeof value == \"function\" ? (/^[A-Z]/.test(name) ? \"class\" : top ? \"function\" : \"method\")\n                    : top ? \"variable\" : \"property\",\n                boost: -depth\n            });\n        }\n        let next = Object.getPrototypeOf(obj);\n        if (!next)\n            return options;\n        obj = next;\n    }\n}\n/**\nDefines a [completion source](https://codemirror.net/6/docs/ref/#autocomplete.CompletionSource) that\ncompletes from the given scope object (for example `globalThis`).\nWill enter properties of the object when completing properties on\na directly-named path.\n*/\nfunction scopeCompletionSource(scope) {\n    let cache = new Map;\n    return (context) => {\n        let path = completionPath(context);\n        if (!path)\n            return null;\n        let target = scope;\n        for (let step of path.path) {\n            target = target[step];\n            if (!target)\n                return null;\n        }\n        let options = cache.get(target);\n        if (!options)\n            cache.set(target, options = enumeratePropertyCompletions(target, !path.path.length));\n        return {\n            from: context.pos - path.name.length,\n            options,\n            validFor: Identifier\n        };\n    };\n}\n\n/**\nA language provider based on the [Lezer JavaScript\nparser](https://github.com/lezer-parser/javascript), extended with\nhighlighting and indentation information.\n*/\nconst javascriptLanguage = /*@__PURE__*/LRLanguage.define({\n    name: \"javascript\",\n    parser: /*@__PURE__*/parser.configure({\n        props: [\n            /*@__PURE__*/indentNodeProp.add({\n                IfStatement: /*@__PURE__*/continuedIndent({ except: /^\\s*({|else\\b)/ }),\n                TryStatement: /*@__PURE__*/continuedIndent({ except: /^\\s*({|catch\\b|finally\\b)/ }),\n                LabeledStatement: flatIndent,\n                SwitchBody: context => {\n                    let after = context.textAfter, closed = /^\\s*\\}/.test(after), isCase = /^\\s*(case|default)\\b/.test(after);\n                    return context.baseIndent + (closed ? 0 : isCase ? 1 : 2) * context.unit;\n                },\n                Block: /*@__PURE__*/delimitedIndent({ closing: \"}\" }),\n                ArrowFunction: cx => cx.baseIndent + cx.unit,\n                \"TemplateString BlockComment\": () => null,\n                \"Statement Property\": /*@__PURE__*/continuedIndent({ except: /^{/ }),\n                JSXElement(context) {\n                    let closed = /^\\s*<\\//.test(context.textAfter);\n                    return context.lineIndent(context.node.from) + (closed ? 0 : context.unit);\n                },\n                JSXEscape(context) {\n                    let closed = /\\s*\\}/.test(context.textAfter);\n                    return context.lineIndent(context.node.from) + (closed ? 0 : context.unit);\n                },\n                \"JSXOpenTag JSXSelfClosingTag\"(context) {\n                    return context.column(context.node.from) + context.unit;\n                }\n            }),\n            /*@__PURE__*/foldNodeProp.add({\n                \"Block ClassBody SwitchBody EnumBody ObjectExpression ArrayExpression ObjectType\": foldInside,\n                BlockComment(tree) { return { from: tree.from + 2, to: tree.to - 2 }; }\n            })\n        ]\n    }),\n    languageData: {\n        closeBrackets: { brackets: [\"(\", \"[\", \"{\", \"'\", '\"', \"`\"] },\n        commentTokens: { line: \"//\", block: { open: \"/*\", close: \"*/\" } },\n        indentOnInput: /^\\s*(?:case |default:|\\{|\\}|<\\/)$/,\n        wordChars: \"$\"\n    }\n});\nconst jsxSublanguage = {\n    test: node => /^JSX/.test(node.name),\n    facet: /*@__PURE__*/defineLanguageFacet({ commentTokens: { block: { open: \"{/*\", close: \"*/}\" } } })\n};\n/**\nA language provider for TypeScript.\n*/\nconst typescriptLanguage = /*@__PURE__*/javascriptLanguage.configure({ dialect: \"ts\" }, \"typescript\");\n/**\nLanguage provider for JSX.\n*/\nconst jsxLanguage = /*@__PURE__*/javascriptLanguage.configure({\n    dialect: \"jsx\",\n    props: [/*@__PURE__*/sublanguageProp.add(n => n.isTop ? [jsxSublanguage] : undefined)]\n});\n/**\nLanguage provider for JSX + TypeScript.\n*/\nconst tsxLanguage = /*@__PURE__*/javascriptLanguage.configure({\n    dialect: \"jsx ts\",\n    props: [/*@__PURE__*/sublanguageProp.add(n => n.isTop ? [jsxSublanguage] : undefined)]\n}, \"typescript\");\nlet kwCompletion = (name) => ({ label: name, type: \"keyword\" });\nconst keywords = /*@__PURE__*/\"break case const continue default delete export extends false finally in instanceof let new return static super switch this throw true typeof var yield\".split(\" \").map(kwCompletion);\nconst typescriptKeywords = /*@__PURE__*/keywords.concat(/*@__PURE__*/[\"declare\", \"implements\", \"private\", \"protected\", \"public\"].map(kwCompletion));\n/**\nJavaScript support. Includes [snippet](https://codemirror.net/6/docs/ref/#lang-javascript.snippets)\nand local variable completion.\n*/\nfunction javascript(config = {}) {\n    let lang = config.jsx ? (config.typescript ? tsxLanguage : jsxLanguage)\n        : config.typescript ? typescriptLanguage : javascriptLanguage;\n    let completions = config.typescript ? typescriptSnippets.concat(typescriptKeywords) : snippets.concat(keywords);\n    return new LanguageSupport(lang, [\n        javascriptLanguage.data.of({\n            autocomplete: ifNotIn(dontComplete, completeFromList(completions))\n        }),\n        javascriptLanguage.data.of({\n            autocomplete: localCompletionSource\n        }),\n        config.jsx ? autoCloseTags : [],\n    ]);\n}\nfunction findOpenTag(node) {\n    for (;;) {\n        if (node.name == \"JSXOpenTag\" || node.name == \"JSXSelfClosingTag\" || node.name == \"JSXFragmentTag\")\n            return node;\n        if (node.name == \"JSXEscape\" || !node.parent)\n            return null;\n        node = node.parent;\n    }\n}\nfunction elementName(doc, tree, max = doc.length) {\n    for (let ch = tree === null || tree === void 0 ? void 0 : tree.firstChild; ch; ch = ch.nextSibling) {\n        if (ch.name == \"JSXIdentifier\" || ch.name == \"JSXBuiltin\" || ch.name == \"JSXNamespacedName\" ||\n            ch.name == \"JSXMemberExpression\")\n            return doc.sliceString(ch.from, Math.min(ch.to, max));\n    }\n    return \"\";\n}\nconst android = typeof navigator == \"object\" && /*@__PURE__*//Android\\b/.test(navigator.userAgent);\n/**\nExtension that will automatically insert JSX close tags when a `>` or\n`/` is typed.\n*/\nconst autoCloseTags = /*@__PURE__*/EditorView.inputHandler.of((view, from, to, text, defaultInsert) => {\n    if ((android ? view.composing : view.compositionStarted) || view.state.readOnly ||\n        from != to || (text != \">\" && text != \"/\") ||\n        !javascriptLanguage.isActiveAt(view.state, from, -1))\n        return false;\n    let base = defaultInsert(), { state } = base;\n    let closeTags = state.changeByRange(range => {\n        var _a;\n        let { head } = range, around = syntaxTree(state).resolveInner(head - 1, -1), name;\n        if (around.name == \"JSXStartTag\")\n            around = around.parent;\n        if (state.doc.sliceString(head - 1, head) != text || around.name == \"JSXAttributeValue\" && around.to > head) ;\n        else if (text == \">\" && around.name == \"JSXFragmentTag\") {\n            return { range, changes: { from: head, insert: `</>` } };\n        }\n        else if (text == \"/\" && around.name == \"JSXStartCloseTag\") {\n            let empty = around.parent, base = empty.parent;\n            if (base && empty.from == head - 2 &&\n                ((name = elementName(state.doc, base.firstChild, head)) || ((_a = base.firstChild) === null || _a === void 0 ? void 0 : _a.name) == \"JSXFragmentTag\")) {\n                let insert = `${name}>`;\n                return { range: EditorSelection.cursor(head + insert.length, -1), changes: { from: head, insert } };\n            }\n        }\n        else if (text == \">\") {\n            let openTag = findOpenTag(around);\n            if (openTag && openTag.name == \"JSXOpenTag\" &&\n                !/^\\/?>|^<\\//.test(state.doc.sliceString(head, head + 2)) &&\n                (name = elementName(state.doc, openTag, head)))\n                return { range, changes: { from: head, insert: `</${name}>` } };\n        }\n        return { range };\n    });\n    if (closeTags.changes.empty)\n        return false;\n    view.dispatch([\n        base,\n        state.update(closeTags, { userEvent: \"input.complete\", scrollIntoView: true })\n    ]);\n    return true;\n});\n\n/**\nConnects an [ESLint](https://eslint.org/) linter to CodeMirror's\n[lint](https://codemirror.net/6/docs/ref/#lint) integration. `eslint` should be an instance of the\n[`Linter`](https://eslint.org/docs/developer-guide/nodejs-api#linter)\nclass, and `config` an optional ESLint configuration. The return\nvalue of this function can be passed to [`linter`](https://codemirror.net/6/docs/ref/#lint.linter)\nto create a JavaScript linting extension.\n\nNote that ESLint targets node, and is tricky to run in the\nbrowser. The\n[eslint-linter-browserify](https://github.com/UziTech/eslint-linter-browserify)\npackage may help with that (see\n[example](https://github.com/UziTech/eslint-linter-browserify/blob/master/example/script.js)).\n*/\nfunction esLint(eslint, config) {\n    if (!config) {\n        config = {\n            parserOptions: { ecmaVersion: 2019, sourceType: \"module\" },\n            env: { browser: true, node: true, es6: true, es2015: true, es2017: true, es2020: true },\n            rules: {}\n        };\n        eslint.getRules().forEach((desc, name) => {\n            if (desc.meta.docs.recommended)\n                config.rules[name] = 2;\n        });\n    }\n    return (view) => {\n        let { state } = view, found = [];\n        for (let { from, to } of javascriptLanguage.findRegions(state)) {\n            let fromLine = state.doc.lineAt(from), offset = { line: fromLine.number - 1, col: from - fromLine.from, pos: from };\n            for (let d of eslint.verify(state.sliceDoc(from, to), config))\n                found.push(translateDiagnostic(d, state.doc, offset));\n        }\n        return found;\n    };\n}\nfunction mapPos(line, col, doc, offset) {\n    return doc.line(line + offset.line).from + col + (line == 1 ? offset.col - 1 : -1);\n}\nfunction translateDiagnostic(input, doc, offset) {\n    let start = mapPos(input.line, input.column, doc, offset);\n    let result = {\n        from: start,\n        to: input.endLine != null && input.endColumn != 1 ? mapPos(input.endLine, input.endColumn, doc, offset) : start,\n        message: input.message,\n        source: input.ruleId ? \"eslint:\" + input.ruleId : \"eslint\",\n        severity: input.severity == 1 ? \"warning\" : \"error\",\n    };\n    if (input.fix) {\n        let { range, text } = input.fix, from = range[0] + offset.pos - start, to = range[1] + offset.pos - start;\n        result.actions = [{\n                name: \"fix\",\n                apply(view, start) {\n                    view.dispatch({ changes: { from: start + from, to: start + to, insert: text }, scrollIntoView: true });\n                }\n            }];\n    }\n    return result;\n}\n\nexport { autoCloseTags, completionPath, esLint, javascript, javascriptLanguage, jsxLanguage, localCompletionSource, scopeCompletionSource, snippets, tsxLanguage, typescriptLanguage, typescriptSnippets };\n","import { parser } from '@lezer/json';\nimport { LRLanguage, indentNodeProp, continuedIndent, foldNodeProp, foldInside, LanguageSupport } from '@codemirror/language';\n\n/**\nCalls\n[`JSON.parse`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse)\non the document and, if that throws an error, reports it as a\nsingle diagnostic.\n*/\nconst jsonParseLinter = () => (view) => {\n    try {\n        JSON.parse(view.state.doc.toString());\n    }\n    catch (e) {\n        if (!(e instanceof SyntaxError))\n            throw e;\n        const pos = getErrorPosition(e, view.state.doc);\n        return [{\n                from: pos,\n                message: e.message,\n                severity: 'error',\n                to: pos\n            }];\n    }\n    return [];\n};\nfunction getErrorPosition(error, doc) {\n    let m;\n    if (m = error.message.match(/at position (\\d+)/))\n        return Math.min(+m[1], doc.length);\n    if (m = error.message.match(/at line (\\d+) column (\\d+)/))\n        return Math.min(doc.line(+m[1]).from + (+m[2]) - 1, doc.length);\n    return 0;\n}\n\n/**\nA language provider that provides JSON parsing.\n*/\nconst jsonLanguage = /*@__PURE__*/LRLanguage.define({\n    name: \"json\",\n    parser: /*@__PURE__*/parser.configure({\n        props: [\n            /*@__PURE__*/indentNodeProp.add({\n                Object: /*@__PURE__*/continuedIndent({ except: /^\\s*\\}/ }),\n                Array: /*@__PURE__*/continuedIndent({ except: /^\\s*\\]/ })\n            }),\n            /*@__PURE__*/foldNodeProp.add({\n                \"Object Array\": foldInside\n            })\n        ]\n    }),\n    languageData: {\n        closeBrackets: { brackets: [\"[\", \"{\", '\"'] },\n        indentOnInput: /^\\s*[\\}\\]]$/\n    }\n});\n/**\nJSON language support.\n*/\nfunction json() {\n    return new LanguageSupport(jsonLanguage);\n}\n\nexport { json, jsonLanguage, jsonParseLinter };\n","import { NodeProp, IterMode, Tree, TreeFragment, Parser, NodeType, NodeSet } from '@lezer/common';\nimport { StateEffect, StateField, Facet, EditorState, countColumn, combineConfig, RangeSet, RangeSetBuilder, Prec } from '@codemirror/state';\nimport { ViewPlugin, logException, EditorView, Decoration, WidgetType, gutter, GutterMarker, Direction } from '@codemirror/view';\nimport { tags, tagHighlighter, highlightTree, styleTags } from '@lezer/highlight';\nimport { StyleModule } from 'style-mod';\n\nvar _a;\n/**\nNode prop stored in a parser's top syntax node to provide the\nfacet that stores language-specific data for that language.\n*/\nconst languageDataProp = /*@__PURE__*/new NodeProp();\n/**\nHelper function to define a facet (to be added to the top syntax\nnode(s) for a language via\n[`languageDataProp`](https://codemirror.net/6/docs/ref/#language.languageDataProp)), that will be\nused to associate language data with the language. You\nprobably only need this when subclassing\n[`Language`](https://codemirror.net/6/docs/ref/#language.Language).\n*/\nfunction defineLanguageFacet(baseData) {\n    return Facet.define({\n        combine: baseData ? values => values.concat(baseData) : undefined\n    });\n}\n/**\nSyntax node prop used to register sublanguages. Should be added to\nthe top level node type for the language.\n*/\nconst sublanguageProp = /*@__PURE__*/new NodeProp();\n/**\nA language object manages parsing and per-language\n[metadata](https://codemirror.net/6/docs/ref/#state.EditorState.languageDataAt). Parse data is\nmanaged as a [Lezer](https://lezer.codemirror.net) tree. The class\ncan be used directly, via the [`LRLanguage`](https://codemirror.net/6/docs/ref/#language.LRLanguage)\nsubclass for [Lezer](https://lezer.codemirror.net/) LR parsers, or\nvia the [`StreamLanguage`](https://codemirror.net/6/docs/ref/#language.StreamLanguage) subclass\nfor stream parsers.\n*/\nclass Language {\n    /**\n    Construct a language object. If you need to invoke this\n    directly, first define a data facet with\n    [`defineLanguageFacet`](https://codemirror.net/6/docs/ref/#language.defineLanguageFacet), and then\n    configure your parser to [attach](https://codemirror.net/6/docs/ref/#language.languageDataProp) it\n    to the language's outer syntax node.\n    */\n    constructor(\n    /**\n    The [language data](https://codemirror.net/6/docs/ref/#state.EditorState.languageDataAt) facet\n    used for this language.\n    */\n    data, parser, extraExtensions = [], \n    /**\n    A language name.\n    */\n    name = \"\") {\n        this.data = data;\n        this.name = name;\n        // Kludge to define EditorState.tree as a debugging helper,\n        // without the EditorState package actually knowing about\n        // languages and lezer trees.\n        if (!EditorState.prototype.hasOwnProperty(\"tree\"))\n            Object.defineProperty(EditorState.prototype, \"tree\", { get() { return syntaxTree(this); } });\n        this.parser = parser;\n        this.extension = [\n            language.of(this),\n            EditorState.languageData.of((state, pos, side) => {\n                let top = topNodeAt(state, pos, side), data = top.type.prop(languageDataProp);\n                if (!data)\n                    return [];\n                let base = state.facet(data), sub = top.type.prop(sublanguageProp);\n                if (sub) {\n                    let innerNode = top.resolve(pos - top.from, side);\n                    for (let sublang of sub)\n                        if (sublang.test(innerNode, state)) {\n                            let data = state.facet(sublang.facet);\n                            return sublang.type == \"replace\" ? data : data.concat(base);\n                        }\n                }\n                return base;\n            })\n        ].concat(extraExtensions);\n    }\n    /**\n    Query whether this language is active at the given position.\n    */\n    isActiveAt(state, pos, side = -1) {\n        return topNodeAt(state, pos, side).type.prop(languageDataProp) == this.data;\n    }\n    /**\n    Find the document regions that were parsed using this language.\n    The returned regions will _include_ any nested languages rooted\n    in this language, when those exist.\n    */\n    findRegions(state) {\n        let lang = state.facet(language);\n        if ((lang === null || lang === void 0 ? void 0 : lang.data) == this.data)\n            return [{ from: 0, to: state.doc.length }];\n        if (!lang || !lang.allowsNesting)\n            return [];\n        let result = [];\n        let explore = (tree, from) => {\n            if (tree.prop(languageDataProp) == this.data) {\n                result.push({ from, to: from + tree.length });\n                return;\n            }\n            let mount = tree.prop(NodeProp.mounted);\n            if (mount) {\n                if (mount.tree.prop(languageDataProp) == this.data) {\n                    if (mount.overlay)\n                        for (let r of mount.overlay)\n                            result.push({ from: r.from + from, to: r.to + from });\n                    else\n                        result.push({ from: from, to: from + tree.length });\n                    return;\n                }\n                else if (mount.overlay) {\n                    let size = result.length;\n                    explore(mount.tree, mount.overlay[0].from + from);\n                    if (result.length > size)\n                        return;\n                }\n            }\n            for (let i = 0; i < tree.children.length; i++) {\n                let ch = tree.children[i];\n                if (ch instanceof Tree)\n                    explore(ch, tree.positions[i] + from);\n            }\n        };\n        explore(syntaxTree(state), 0);\n        return result;\n    }\n    /**\n    Indicates whether this language allows nested languages. The\n    default implementation returns true.\n    */\n    get allowsNesting() { return true; }\n}\n/**\n@internal\n*/\nLanguage.setState = /*@__PURE__*/StateEffect.define();\nfunction topNodeAt(state, pos, side) {\n    let topLang = state.facet(language), tree = syntaxTree(state).topNode;\n    if (!topLang || topLang.allowsNesting) {\n        for (let node = tree; node; node = node.enter(pos, side, IterMode.ExcludeBuffers))\n            if (node.type.isTop)\n                tree = node;\n    }\n    return tree;\n}\n/**\nA subclass of [`Language`](https://codemirror.net/6/docs/ref/#language.Language) for use with Lezer\n[LR parsers](https://lezer.codemirror.net/docs/ref#lr.LRParser)\nparsers.\n*/\nclass LRLanguage extends Language {\n    constructor(data, parser, name) {\n        super(data, parser, [], name);\n        this.parser = parser;\n    }\n    /**\n    Define a language from a parser.\n    */\n    static define(spec) {\n        let data = defineLanguageFacet(spec.languageData);\n        return new LRLanguage(data, spec.parser.configure({\n            props: [languageDataProp.add(type => type.isTop ? data : undefined)]\n        }), spec.name);\n    }\n    /**\n    Create a new instance of this language with a reconfigured\n    version of its parser and optionally a new name.\n    */\n    configure(options, name) {\n        return new LRLanguage(this.data, this.parser.configure(options), name || this.name);\n    }\n    get allowsNesting() { return this.parser.hasWrappers(); }\n}\n/**\nGet the syntax tree for a state, which is the current (possibly\nincomplete) parse tree of the active\n[language](https://codemirror.net/6/docs/ref/#language.Language), or the empty tree if there is no\nlanguage available.\n*/\nfunction syntaxTree(state) {\n    let field = state.field(Language.state, false);\n    return field ? field.tree : Tree.empty;\n}\n/**\nTry to get a parse tree that spans at least up to `upto`. The\nmethod will do at most `timeout` milliseconds of work to parse\nup to that point if the tree isn't already available.\n*/\nfunction ensureSyntaxTree(state, upto, timeout = 50) {\n    var _a;\n    let parse = (_a = state.field(Language.state, false)) === null || _a === void 0 ? void 0 : _a.context;\n    if (!parse)\n        return null;\n    let oldVieport = parse.viewport;\n    parse.updateViewport({ from: 0, to: upto });\n    let result = parse.isDone(upto) || parse.work(timeout, upto) ? parse.tree : null;\n    parse.updateViewport(oldVieport);\n    return result;\n}\n/**\nQueries whether there is a full syntax tree available up to the\ngiven document position. If there isn't, the background parse\nprocess _might_ still be working and update the tree further, but\nthere is no guarantee of that—the parser will [stop\nworking](https://codemirror.net/6/docs/ref/#language.syntaxParserRunning) when it has spent a\ncertain amount of time or has moved beyond the visible viewport.\nAlways returns false if no language has been enabled.\n*/\nfunction syntaxTreeAvailable(state, upto = state.doc.length) {\n    var _a;\n    return ((_a = state.field(Language.state, false)) === null || _a === void 0 ? void 0 : _a.context.isDone(upto)) || false;\n}\n/**\nMove parsing forward, and update the editor state afterwards to\nreflect the new tree. Will work for at most `timeout`\nmilliseconds. Returns true if the parser managed get to the given\nposition in that time.\n*/\nfunction forceParsing(view, upto = view.viewport.to, timeout = 100) {\n    let success = ensureSyntaxTree(view.state, upto, timeout);\n    if (success != syntaxTree(view.state))\n        view.dispatch({});\n    return !!success;\n}\n/**\nTells you whether the language parser is planning to do more\nparsing work (in a `requestIdleCallback` pseudo-thread) or has\nstopped running, either because it parsed the entire document,\nbecause it spent too much time and was cut off, or because there\nis no language parser enabled.\n*/\nfunction syntaxParserRunning(view) {\n    var _a;\n    return ((_a = view.plugin(parseWorker)) === null || _a === void 0 ? void 0 : _a.isWorking()) || false;\n}\n/**\nLezer-style\n[`Input`](https://lezer.codemirror.net/docs/ref#common.Input)\nobject for a [`Text`](https://codemirror.net/6/docs/ref/#state.Text) object.\n*/\nclass DocInput {\n    /**\n    Create an input object for the given document.\n    */\n    constructor(doc) {\n        this.doc = doc;\n        this.cursorPos = 0;\n        this.string = \"\";\n        this.cursor = doc.iter();\n    }\n    get length() { return this.doc.length; }\n    syncTo(pos) {\n        this.string = this.cursor.next(pos - this.cursorPos).value;\n        this.cursorPos = pos + this.string.length;\n        return this.cursorPos - this.string.length;\n    }\n    chunk(pos) {\n        this.syncTo(pos);\n        return this.string;\n    }\n    get lineChunks() { return true; }\n    read(from, to) {\n        let stringStart = this.cursorPos - this.string.length;\n        if (from < stringStart || to >= this.cursorPos)\n            return this.doc.sliceString(from, to);\n        else\n            return this.string.slice(from - stringStart, to - stringStart);\n    }\n}\nlet currentContext = null;\n/**\nA parse context provided to parsers working on the editor content.\n*/\nclass ParseContext {\n    constructor(parser, \n    /**\n    The current editor state.\n    */\n    state, \n    /**\n    Tree fragments that can be reused by incremental re-parses.\n    */\n    fragments = [], \n    /**\n    @internal\n    */\n    tree, \n    /**\n    @internal\n    */\n    treeLen, \n    /**\n    The current editor viewport (or some overapproximation\n    thereof). Intended to be used for opportunistically avoiding\n    work (in which case\n    [`skipUntilInView`](https://codemirror.net/6/docs/ref/#language.ParseContext.skipUntilInView)\n    should be called to make sure the parser is restarted when the\n    skipped region becomes visible).\n    */\n    viewport, \n    /**\n    @internal\n    */\n    skipped, \n    /**\n    This is where skipping parsers can register a promise that,\n    when resolved, will schedule a new parse. It is cleared when\n    the parse worker picks up the promise. @internal\n    */\n    scheduleOn) {\n        this.parser = parser;\n        this.state = state;\n        this.fragments = fragments;\n        this.tree = tree;\n        this.treeLen = treeLen;\n        this.viewport = viewport;\n        this.skipped = skipped;\n        this.scheduleOn = scheduleOn;\n        this.parse = null;\n        /**\n        @internal\n        */\n        this.tempSkipped = [];\n    }\n    /**\n    @internal\n    */\n    static create(parser, state, viewport) {\n        return new ParseContext(parser, state, [], Tree.empty, 0, viewport, [], null);\n    }\n    startParse() {\n        return this.parser.startParse(new DocInput(this.state.doc), this.fragments);\n    }\n    /**\n    @internal\n    */\n    work(until, upto) {\n        if (upto != null && upto >= this.state.doc.length)\n            upto = undefined;\n        if (this.tree != Tree.empty && this.isDone(upto !== null && upto !== void 0 ? upto : this.state.doc.length)) {\n            this.takeTree();\n            return true;\n        }\n        return this.withContext(() => {\n            var _a;\n            if (typeof until == \"number\") {\n                let endTime = Date.now() + until;\n                until = () => Date.now() > endTime;\n            }\n            if (!this.parse)\n                this.parse = this.startParse();\n            if (upto != null && (this.parse.stoppedAt == null || this.parse.stoppedAt > upto) &&\n                upto < this.state.doc.length)\n                this.parse.stopAt(upto);\n            for (;;) {\n                let done = this.parse.advance();\n                if (done) {\n                    this.fragments = this.withoutTempSkipped(TreeFragment.addTree(done, this.fragments, this.parse.stoppedAt != null));\n                    this.treeLen = (_a = this.parse.stoppedAt) !== null && _a !== void 0 ? _a : this.state.doc.length;\n                    this.tree = done;\n                    this.parse = null;\n                    if (this.treeLen < (upto !== null && upto !== void 0 ? upto : this.state.doc.length))\n                        this.parse = this.startParse();\n                    else\n                        return true;\n                }\n                if (until())\n                    return false;\n            }\n        });\n    }\n    /**\n    @internal\n    */\n    takeTree() {\n        let pos, tree;\n        if (this.parse && (pos = this.parse.parsedPos) >= this.treeLen) {\n            if (this.parse.stoppedAt == null || this.parse.stoppedAt > pos)\n                this.parse.stopAt(pos);\n            this.withContext(() => { while (!(tree = this.parse.advance())) { } });\n            this.treeLen = pos;\n            this.tree = tree;\n            this.fragments = this.withoutTempSkipped(TreeFragment.addTree(this.tree, this.fragments, true));\n            this.parse = null;\n        }\n    }\n    withContext(f) {\n        let prev = currentContext;\n        currentContext = this;\n        try {\n            return f();\n        }\n        finally {\n            currentContext = prev;\n        }\n    }\n    withoutTempSkipped(fragments) {\n        for (let r; r = this.tempSkipped.pop();)\n            fragments = cutFragments(fragments, r.from, r.to);\n        return fragments;\n    }\n    /**\n    @internal\n    */\n    changes(changes, newState) {\n        let { fragments, tree, treeLen, viewport, skipped } = this;\n        this.takeTree();\n        if (!changes.empty) {\n            let ranges = [];\n            changes.iterChangedRanges((fromA, toA, fromB, toB) => ranges.push({ fromA, toA, fromB, toB }));\n            fragments = TreeFragment.applyChanges(fragments, ranges);\n            tree = Tree.empty;\n            treeLen = 0;\n            viewport = { from: changes.mapPos(viewport.from, -1), to: changes.mapPos(viewport.to, 1) };\n            if (this.skipped.length) {\n                skipped = [];\n                for (let r of this.skipped) {\n                    let from = changes.mapPos(r.from, 1), to = changes.mapPos(r.to, -1);\n                    if (from < to)\n                        skipped.push({ from, to });\n                }\n            }\n        }\n        return new ParseContext(this.parser, newState, fragments, tree, treeLen, viewport, skipped, this.scheduleOn);\n    }\n    /**\n    @internal\n    */\n    updateViewport(viewport) {\n        if (this.viewport.from == viewport.from && this.viewport.to == viewport.to)\n            return false;\n        this.viewport = viewport;\n        let startLen = this.skipped.length;\n        for (let i = 0; i < this.skipped.length; i++) {\n            let { from, to } = this.skipped[i];\n            if (from < viewport.to && to > viewport.from) {\n                this.fragments = cutFragments(this.fragments, from, to);\n                this.skipped.splice(i--, 1);\n            }\n        }\n        if (this.skipped.length >= startLen)\n            return false;\n        this.reset();\n        return true;\n    }\n    /**\n    @internal\n    */\n    reset() {\n        if (this.parse) {\n            this.takeTree();\n            this.parse = null;\n        }\n    }\n    /**\n    Notify the parse scheduler that the given region was skipped\n    because it wasn't in view, and the parse should be restarted\n    when it comes into view.\n    */\n    skipUntilInView(from, to) {\n        this.skipped.push({ from, to });\n    }\n    /**\n    Returns a parser intended to be used as placeholder when\n    asynchronously loading a nested parser. It'll skip its input and\n    mark it as not-really-parsed, so that the next update will parse\n    it again.\n    \n    When `until` is given, a reparse will be scheduled when that\n    promise resolves.\n    */\n    static getSkippingParser(until) {\n        return new class extends Parser {\n            createParse(input, fragments, ranges) {\n                let from = ranges[0].from, to = ranges[ranges.length - 1].to;\n                let parser = {\n                    parsedPos: from,\n                    advance() {\n                        let cx = currentContext;\n                        if (cx) {\n                            for (let r of ranges)\n                                cx.tempSkipped.push(r);\n                            if (until)\n                                cx.scheduleOn = cx.scheduleOn ? Promise.all([cx.scheduleOn, until]) : until;\n                        }\n                        this.parsedPos = to;\n                        return new Tree(NodeType.none, [], [], to - from);\n                    },\n                    stoppedAt: null,\n                    stopAt() { }\n                };\n                return parser;\n            }\n        };\n    }\n    /**\n    @internal\n    */\n    isDone(upto) {\n        upto = Math.min(upto, this.state.doc.length);\n        let frags = this.fragments;\n        return this.treeLen >= upto && frags.length && frags[0].from == 0 && frags[0].to >= upto;\n    }\n    /**\n    Get the context for the current parse, or `null` if no editor\n    parse is in progress.\n    */\n    static get() { return currentContext; }\n}\nfunction cutFragments(fragments, from, to) {\n    return TreeFragment.applyChanges(fragments, [{ fromA: from, toA: to, fromB: from, toB: to }]);\n}\nclass LanguageState {\n    constructor(\n    // A mutable parse state that is used to preserve work done during\n    // the lifetime of a state when moving to the next state.\n    context) {\n        this.context = context;\n        this.tree = context.tree;\n    }\n    apply(tr) {\n        if (!tr.docChanged && this.tree == this.context.tree)\n            return this;\n        let newCx = this.context.changes(tr.changes, tr.state);\n        // If the previous parse wasn't done, go forward only up to its\n        // end position or the end of the viewport, to avoid slowing down\n        // state updates with parse work beyond the viewport.\n        let upto = this.context.treeLen == tr.startState.doc.length ? undefined\n            : Math.max(tr.changes.mapPos(this.context.treeLen), newCx.viewport.to);\n        if (!newCx.work(20 /* Work.Apply */, upto))\n            newCx.takeTree();\n        return new LanguageState(newCx);\n    }\n    static init(state) {\n        let vpTo = Math.min(3000 /* Work.InitViewport */, state.doc.length);\n        let parseState = ParseContext.create(state.facet(language).parser, state, { from: 0, to: vpTo });\n        if (!parseState.work(20 /* Work.Apply */, vpTo))\n            parseState.takeTree();\n        return new LanguageState(parseState);\n    }\n}\nLanguage.state = /*@__PURE__*/StateField.define({\n    create: LanguageState.init,\n    update(value, tr) {\n        for (let e of tr.effects)\n            if (e.is(Language.setState))\n                return e.value;\n        if (tr.startState.facet(language) != tr.state.facet(language))\n            return LanguageState.init(tr.state);\n        return value.apply(tr);\n    }\n});\nlet requestIdle = (callback) => {\n    let timeout = setTimeout(() => callback(), 500 /* Work.MaxPause */);\n    return () => clearTimeout(timeout);\n};\nif (typeof requestIdleCallback != \"undefined\")\n    requestIdle = (callback) => {\n        let idle = -1, timeout = setTimeout(() => {\n            idle = requestIdleCallback(callback, { timeout: 500 /* Work.MaxPause */ - 100 /* Work.MinPause */ });\n        }, 100 /* Work.MinPause */);\n        return () => idle < 0 ? clearTimeout(timeout) : cancelIdleCallback(idle);\n    };\nconst isInputPending = typeof navigator != \"undefined\" && ((_a = navigator.scheduling) === null || _a === void 0 ? void 0 : _a.isInputPending)\n    ? () => navigator.scheduling.isInputPending() : null;\nconst parseWorker = /*@__PURE__*/ViewPlugin.fromClass(class ParseWorker {\n    constructor(view) {\n        this.view = view;\n        this.working = null;\n        this.workScheduled = 0;\n        // End of the current time chunk\n        this.chunkEnd = -1;\n        // Milliseconds of budget left for this chunk\n        this.chunkBudget = -1;\n        this.work = this.work.bind(this);\n        this.scheduleWork();\n    }\n    update(update) {\n        let cx = this.view.state.field(Language.state).context;\n        if (cx.updateViewport(update.view.viewport) || this.view.viewport.to > cx.treeLen)\n            this.scheduleWork();\n        if (update.docChanged || update.selectionSet) {\n            if (this.view.hasFocus)\n                this.chunkBudget += 50 /* Work.ChangeBonus */;\n            this.scheduleWork();\n        }\n        this.checkAsyncSchedule(cx);\n    }\n    scheduleWork() {\n        if (this.working)\n            return;\n        let { state } = this.view, field = state.field(Language.state);\n        if (field.tree != field.context.tree || !field.context.isDone(state.doc.length))\n            this.working = requestIdle(this.work);\n    }\n    work(deadline) {\n        this.working = null;\n        let now = Date.now();\n        if (this.chunkEnd < now && (this.chunkEnd < 0 || this.view.hasFocus)) { // Start a new chunk\n            this.chunkEnd = now + 30000 /* Work.ChunkTime */;\n            this.chunkBudget = 3000 /* Work.ChunkBudget */;\n        }\n        if (this.chunkBudget <= 0)\n            return; // No more budget\n        let { state, viewport: { to: vpTo } } = this.view, field = state.field(Language.state);\n        if (field.tree == field.context.tree && field.context.isDone(vpTo + 100000 /* Work.MaxParseAhead */))\n            return;\n        let endTime = Date.now() + Math.min(this.chunkBudget, 100 /* Work.Slice */, deadline && !isInputPending ? Math.max(25 /* Work.MinSlice */, deadline.timeRemaining() - 5) : 1e9);\n        let viewportFirst = field.context.treeLen < vpTo && state.doc.length > vpTo + 1000;\n        let done = field.context.work(() => {\n            return isInputPending && isInputPending() || Date.now() > endTime;\n        }, vpTo + (viewportFirst ? 0 : 100000 /* Work.MaxParseAhead */));\n        this.chunkBudget -= Date.now() - now;\n        if (done || this.chunkBudget <= 0) {\n            field.context.takeTree();\n            this.view.dispatch({ effects: Language.setState.of(new LanguageState(field.context)) });\n        }\n        if (this.chunkBudget > 0 && !(done && !viewportFirst))\n            this.scheduleWork();\n        this.checkAsyncSchedule(field.context);\n    }\n    checkAsyncSchedule(cx) {\n        if (cx.scheduleOn) {\n            this.workScheduled++;\n            cx.scheduleOn\n                .then(() => this.scheduleWork())\n                .catch(err => logException(this.view.state, err))\n                .then(() => this.workScheduled--);\n            cx.scheduleOn = null;\n        }\n    }\n    destroy() {\n        if (this.working)\n            this.working();\n    }\n    isWorking() {\n        return !!(this.working || this.workScheduled > 0);\n    }\n}, {\n    eventHandlers: { focus() { this.scheduleWork(); } }\n});\n/**\nThe facet used to associate a language with an editor state. Used\nby `Language` object's `extension` property (so you don't need to\nmanually wrap your languages in this). Can be used to access the\ncurrent language on a state.\n*/\nconst language = /*@__PURE__*/Facet.define({\n    combine(languages) { return languages.length ? languages[0] : null; },\n    enables: language => [\n        Language.state,\n        parseWorker,\n        EditorView.contentAttributes.compute([language], state => {\n            let lang = state.facet(language);\n            return lang && lang.name ? { \"data-language\": lang.name } : {};\n        })\n    ]\n});\n/**\nThis class bundles a [language](https://codemirror.net/6/docs/ref/#language.Language) with an\noptional set of supporting extensions. Language packages are\nencouraged to export a function that optionally takes a\nconfiguration object and returns a `LanguageSupport` instance, as\nthe main way for client code to use the package.\n*/\nclass LanguageSupport {\n    /**\n    Create a language support object.\n    */\n    constructor(\n    /**\n    The language object.\n    */\n    language, \n    /**\n    An optional set of supporting extensions. When nesting a\n    language in another language, the outer language is encouraged\n    to include the supporting extensions for its inner languages\n    in its own set of support extensions.\n    */\n    support = []) {\n        this.language = language;\n        this.support = support;\n        this.extension = [language, support];\n    }\n}\n/**\nLanguage descriptions are used to store metadata about languages\nand to dynamically load them. Their main role is finding the\nappropriate language for a filename or dynamically loading nested\nparsers.\n*/\nclass LanguageDescription {\n    constructor(\n    /**\n    The name of this language.\n    */\n    name, \n    /**\n    Alternative names for the mode (lowercased, includes `this.name`).\n    */\n    alias, \n    /**\n    File extensions associated with this language.\n    */\n    extensions, \n    /**\n    Optional filename pattern that should be associated with this\n    language.\n    */\n    filename, loadFunc, \n    /**\n    If the language has been loaded, this will hold its value.\n    */\n    support = undefined) {\n        this.name = name;\n        this.alias = alias;\n        this.extensions = extensions;\n        this.filename = filename;\n        this.loadFunc = loadFunc;\n        this.support = support;\n        this.loading = null;\n    }\n    /**\n    Start loading the the language. Will return a promise that\n    resolves to a [`LanguageSupport`](https://codemirror.net/6/docs/ref/#language.LanguageSupport)\n    object when the language successfully loads.\n    */\n    load() {\n        return this.loading || (this.loading = this.loadFunc().then(support => this.support = support, err => { this.loading = null; throw err; }));\n    }\n    /**\n    Create a language description.\n    */\n    static of(spec) {\n        let { load, support } = spec;\n        if (!load) {\n            if (!support)\n                throw new RangeError(\"Must pass either 'load' or 'support' to LanguageDescription.of\");\n            load = () => Promise.resolve(support);\n        }\n        return new LanguageDescription(spec.name, (spec.alias || []).concat(spec.name).map(s => s.toLowerCase()), spec.extensions || [], spec.filename, load, support);\n    }\n    /**\n    Look for a language in the given array of descriptions that\n    matches the filename. Will first match\n    [`filename`](https://codemirror.net/6/docs/ref/#language.LanguageDescription.filename) patterns,\n    and then [extensions](https://codemirror.net/6/docs/ref/#language.LanguageDescription.extensions),\n    and return the first language that matches.\n    */\n    static matchFilename(descs, filename) {\n        for (let d of descs)\n            if (d.filename && d.filename.test(filename))\n                return d;\n        let ext = /\\.([^.]+)$/.exec(filename);\n        if (ext)\n            for (let d of descs)\n                if (d.extensions.indexOf(ext[1]) > -1)\n                    return d;\n        return null;\n    }\n    /**\n    Look for a language whose name or alias matches the the given\n    name (case-insensitively). If `fuzzy` is true, and no direct\n    matchs is found, this'll also search for a language whose name\n    or alias occurs in the string (for names shorter than three\n    characters, only when surrounded by non-word characters).\n    */\n    static matchLanguageName(descs, name, fuzzy = true) {\n        name = name.toLowerCase();\n        for (let d of descs)\n            if (d.alias.some(a => a == name))\n                return d;\n        if (fuzzy)\n            for (let d of descs)\n                for (let a of d.alias) {\n                    let found = name.indexOf(a);\n                    if (found > -1 && (a.length > 2 || !/\\w/.test(name[found - 1]) && !/\\w/.test(name[found + a.length])))\n                        return d;\n                }\n        return null;\n    }\n}\n\n/**\nFacet that defines a way to provide a function that computes the\nappropriate indentation depth, as a column number (see\n[`indentString`](https://codemirror.net/6/docs/ref/#language.indentString)), at the start of a given\nline. A return value of `null` indicates no indentation can be\ndetermined, and the line should inherit the indentation of the one\nabove it. A return value of `undefined` defers to the next indent\nservice.\n*/\nconst indentService = /*@__PURE__*/Facet.define();\n/**\nFacet for overriding the unit by which indentation happens. Should\nbe a string consisting either entirely of the same whitespace\ncharacter. When not set, this defaults to 2 spaces.\n*/\nconst indentUnit = /*@__PURE__*/Facet.define({\n    combine: values => {\n        if (!values.length)\n            return \"  \";\n        let unit = values[0];\n        if (!unit || /\\S/.test(unit) || Array.from(unit).some(e => e != unit[0]))\n            throw new Error(\"Invalid indent unit: \" + JSON.stringify(values[0]));\n        return unit;\n    }\n});\n/**\nReturn the _column width_ of an indent unit in the state.\nDetermined by the [`indentUnit`](https://codemirror.net/6/docs/ref/#language.indentUnit)\nfacet, and [`tabSize`](https://codemirror.net/6/docs/ref/#state.EditorState^tabSize) when that\ncontains tabs.\n*/\nfunction getIndentUnit(state) {\n    let unit = state.facet(indentUnit);\n    return unit.charCodeAt(0) == 9 ? state.tabSize * unit.length : unit.length;\n}\n/**\nCreate an indentation string that covers columns 0 to `cols`.\nWill use tabs for as much of the columns as possible when the\n[`indentUnit`](https://codemirror.net/6/docs/ref/#language.indentUnit) facet contains\ntabs.\n*/\nfunction indentString(state, cols) {\n    let result = \"\", ts = state.tabSize, ch = state.facet(indentUnit)[0];\n    if (ch == \"\\t\") {\n        while (cols >= ts) {\n            result += \"\\t\";\n            cols -= ts;\n        }\n        ch = \" \";\n    }\n    for (let i = 0; i < cols; i++)\n        result += ch;\n    return result;\n}\n/**\nGet the indentation, as a column number, at the given position.\nWill first consult any [indent services](https://codemirror.net/6/docs/ref/#language.indentService)\nthat are registered, and if none of those return an indentation,\nthis will check the syntax tree for the [indent node\nprop](https://codemirror.net/6/docs/ref/#language.indentNodeProp) and use that if found. Returns a\nnumber when an indentation could be determined, and null\notherwise.\n*/\nfunction getIndentation(context, pos) {\n    if (context instanceof EditorState)\n        context = new IndentContext(context);\n    for (let service of context.state.facet(indentService)) {\n        let result = service(context, pos);\n        if (result !== undefined)\n            return result;\n    }\n    let tree = syntaxTree(context.state);\n    return tree.length >= pos ? syntaxIndentation(context, tree, pos) : null;\n}\n/**\nCreate a change set that auto-indents all lines touched by the\ngiven document range.\n*/\nfunction indentRange(state, from, to) {\n    let updated = Object.create(null);\n    let context = new IndentContext(state, { overrideIndentation: start => { var _a; return (_a = updated[start]) !== null && _a !== void 0 ? _a : -1; } });\n    let changes = [];\n    for (let pos = from; pos <= to;) {\n        let line = state.doc.lineAt(pos);\n        pos = line.to + 1;\n        let indent = getIndentation(context, line.from);\n        if (indent == null)\n            continue;\n        if (!/\\S/.test(line.text))\n            indent = 0;\n        let cur = /^\\s*/.exec(line.text)[0];\n        let norm = indentString(state, indent);\n        if (cur != norm) {\n            updated[line.from] = indent;\n            changes.push({ from: line.from, to: line.from + cur.length, insert: norm });\n        }\n    }\n    return state.changes(changes);\n}\n/**\nIndentation contexts are used when calling [indentation\nservices](https://codemirror.net/6/docs/ref/#language.indentService). They provide helper utilities\nuseful in indentation logic, and can selectively override the\nindentation reported for some lines.\n*/\nclass IndentContext {\n    /**\n    Create an indent context.\n    */\n    constructor(\n    /**\n    The editor state.\n    */\n    state, \n    /**\n    @internal\n    */\n    options = {}) {\n        this.state = state;\n        this.options = options;\n        this.unit = getIndentUnit(state);\n    }\n    /**\n    Get a description of the line at the given position, taking\n    [simulated line\n    breaks](https://codemirror.net/6/docs/ref/#language.IndentContext.constructor^options.simulateBreak)\n    into account. If there is such a break at `pos`, the `bias`\n    argument determines whether the part of the line line before or\n    after the break is used.\n    */\n    lineAt(pos, bias = 1) {\n        let line = this.state.doc.lineAt(pos);\n        let { simulateBreak, simulateDoubleBreak } = this.options;\n        if (simulateBreak != null && simulateBreak >= line.from && simulateBreak <= line.to) {\n            if (simulateDoubleBreak && simulateBreak == pos)\n                return { text: \"\", from: pos };\n            else if (bias < 0 ? simulateBreak < pos : simulateBreak <= pos)\n                return { text: line.text.slice(simulateBreak - line.from), from: simulateBreak };\n            else\n                return { text: line.text.slice(0, simulateBreak - line.from), from: line.from };\n        }\n        return line;\n    }\n    /**\n    Get the text directly after `pos`, either the entire line\n    or the next 100 characters, whichever is shorter.\n    */\n    textAfterPos(pos, bias = 1) {\n        if (this.options.simulateDoubleBreak && pos == this.options.simulateBreak)\n            return \"\";\n        let { text, from } = this.lineAt(pos, bias);\n        return text.slice(pos - from, Math.min(text.length, pos + 100 - from));\n    }\n    /**\n    Find the column for the given position.\n    */\n    column(pos, bias = 1) {\n        let { text, from } = this.lineAt(pos, bias);\n        let result = this.countColumn(text, pos - from);\n        let override = this.options.overrideIndentation ? this.options.overrideIndentation(from) : -1;\n        if (override > -1)\n            result += override - this.countColumn(text, text.search(/\\S|$/));\n        return result;\n    }\n    /**\n    Find the column position (taking tabs into account) of the given\n    position in the given string.\n    */\n    countColumn(line, pos = line.length) {\n        return countColumn(line, this.state.tabSize, pos);\n    }\n    /**\n    Find the indentation column of the line at the given point.\n    */\n    lineIndent(pos, bias = 1) {\n        let { text, from } = this.lineAt(pos, bias);\n        let override = this.options.overrideIndentation;\n        if (override) {\n            let overriden = override(from);\n            if (overriden > -1)\n                return overriden;\n        }\n        return this.countColumn(text, text.search(/\\S|$/));\n    }\n    /**\n    Returns the [simulated line\n    break](https://codemirror.net/6/docs/ref/#language.IndentContext.constructor^options.simulateBreak)\n    for this context, if any.\n    */\n    get simulatedBreak() {\n        return this.options.simulateBreak || null;\n    }\n}\n/**\nA syntax tree node prop used to associate indentation strategies\nwith node types. Such a strategy is a function from an indentation\ncontext to a column number (see also\n[`indentString`](https://codemirror.net/6/docs/ref/#language.indentString)) or null, where null\nindicates that no definitive indentation can be determined.\n*/\nconst indentNodeProp = /*@__PURE__*/new NodeProp();\n// Compute the indentation for a given position from the syntax tree.\nfunction syntaxIndentation(cx, ast, pos) {\n    let stack = ast.resolveStack(pos);\n    let inner = ast.resolveInner(pos, -1).resolve(pos, 0).enterUnfinishedNodesBefore(pos);\n    if (inner != stack.node) {\n        let add = [];\n        for (let cur = inner; cur && !(cur.from == stack.node.from && cur.type == stack.node.type); cur = cur.parent)\n            add.push(cur);\n        for (let i = add.length - 1; i >= 0; i--)\n            stack = { node: add[i], next: stack };\n    }\n    return indentFor(stack, cx, pos);\n}\nfunction indentFor(stack, cx, pos) {\n    for (let cur = stack; cur; cur = cur.next) {\n        let strategy = indentStrategy(cur.node);\n        if (strategy)\n            return strategy(TreeIndentContext.create(cx, pos, cur));\n    }\n    return 0;\n}\nfunction ignoreClosed(cx) {\n    return cx.pos == cx.options.simulateBreak && cx.options.simulateDoubleBreak;\n}\nfunction indentStrategy(tree) {\n    let strategy = tree.type.prop(indentNodeProp);\n    if (strategy)\n        return strategy;\n    let first = tree.firstChild, close;\n    if (first && (close = first.type.prop(NodeProp.closedBy))) {\n        let last = tree.lastChild, closed = last && close.indexOf(last.name) > -1;\n        return cx => delimitedStrategy(cx, true, 1, undefined, closed && !ignoreClosed(cx) ? last.from : undefined);\n    }\n    return tree.parent == null ? topIndent : null;\n}\nfunction topIndent() { return 0; }\n/**\nObjects of this type provide context information and helper\nmethods to indentation functions registered on syntax nodes.\n*/\nclass TreeIndentContext extends IndentContext {\n    constructor(base, \n    /**\n    The position at which indentation is being computed.\n    */\n    pos, \n    /**\n    @internal\n    */\n    context) {\n        super(base.state, base.options);\n        this.base = base;\n        this.pos = pos;\n        this.context = context;\n    }\n    /**\n    The syntax tree node to which the indentation strategy\n    applies.\n    */\n    get node() { return this.context.node; }\n    /**\n    @internal\n    */\n    static create(base, pos, context) {\n        return new TreeIndentContext(base, pos, context);\n    }\n    /**\n    Get the text directly after `this.pos`, either the entire line\n    or the next 100 characters, whichever is shorter.\n    */\n    get textAfter() {\n        return this.textAfterPos(this.pos);\n    }\n    /**\n    Get the indentation at the reference line for `this.node`, which\n    is the line on which it starts, unless there is a node that is\n    _not_ a parent of this node covering the start of that line. If\n    so, the line at the start of that node is tried, again skipping\n    on if it is covered by another such node.\n    */\n    get baseIndent() {\n        return this.baseIndentFor(this.node);\n    }\n    /**\n    Get the indentation for the reference line of the given node\n    (see [`baseIndent`](https://codemirror.net/6/docs/ref/#language.TreeIndentContext.baseIndent)).\n    */\n    baseIndentFor(node) {\n        let line = this.state.doc.lineAt(node.from);\n        // Skip line starts that are covered by a sibling (or cousin, etc)\n        for (;;) {\n            let atBreak = node.resolve(line.from);\n            while (atBreak.parent && atBreak.parent.from == atBreak.from)\n                atBreak = atBreak.parent;\n            if (isParent(atBreak, node))\n                break;\n            line = this.state.doc.lineAt(atBreak.from);\n        }\n        return this.lineIndent(line.from);\n    }\n    /**\n    Continue looking for indentations in the node's parent nodes,\n    and return the result of that.\n    */\n    continue() {\n        return indentFor(this.context.next, this.base, this.pos);\n    }\n}\nfunction isParent(parent, of) {\n    for (let cur = of; cur; cur = cur.parent)\n        if (parent == cur)\n            return true;\n    return false;\n}\n// Check whether a delimited node is aligned (meaning there are\n// non-skipped nodes on the same line as the opening delimiter). And\n// if so, return the opening token.\nfunction bracketedAligned(context) {\n    let tree = context.node;\n    let openToken = tree.childAfter(tree.from), last = tree.lastChild;\n    if (!openToken)\n        return null;\n    let sim = context.options.simulateBreak;\n    let openLine = context.state.doc.lineAt(openToken.from);\n    let lineEnd = sim == null || sim <= openLine.from ? openLine.to : Math.min(openLine.to, sim);\n    for (let pos = openToken.to;;) {\n        let next = tree.childAfter(pos);\n        if (!next || next == last)\n            return null;\n        if (!next.type.isSkipped) {\n            if (next.from >= lineEnd)\n                return null;\n            let space = /^ */.exec(openLine.text.slice(openToken.to - openLine.from))[0].length;\n            return { from: openToken.from, to: openToken.to + space };\n        }\n        pos = next.to;\n    }\n}\n/**\nAn indentation strategy for delimited (usually bracketed) nodes.\nWill, by default, indent one unit more than the parent's base\nindent unless the line starts with a closing token. When `align`\nis true and there are non-skipped nodes on the node's opening\nline, the content of the node will be aligned with the end of the\nopening node, like this:\n\n    foo(bar,\n        baz)\n*/\nfunction delimitedIndent({ closing, align = true, units = 1 }) {\n    return (context) => delimitedStrategy(context, align, units, closing);\n}\nfunction delimitedStrategy(context, align, units, closing, closedAt) {\n    let after = context.textAfter, space = after.match(/^\\s*/)[0].length;\n    let closed = closing && after.slice(space, space + closing.length) == closing || closedAt == context.pos + space;\n    let aligned = align ? bracketedAligned(context) : null;\n    if (aligned)\n        return closed ? context.column(aligned.from) : context.column(aligned.to);\n    return context.baseIndent + (closed ? 0 : context.unit * units);\n}\n/**\nAn indentation strategy that aligns a node's content to its base\nindentation.\n*/\nconst flatIndent = (context) => context.baseIndent;\n/**\nCreates an indentation strategy that, by default, indents\ncontinued lines one unit more than the node's base indentation.\nYou can provide `except` to prevent indentation of lines that\nmatch a pattern (for example `/^else\\b/` in `if`/`else`\nconstructs), and you can change the amount of units used with the\n`units` option.\n*/\nfunction continuedIndent({ except, units = 1 } = {}) {\n    return (context) => {\n        let matchExcept = except && except.test(context.textAfter);\n        return context.baseIndent + (matchExcept ? 0 : units * context.unit);\n    };\n}\nconst DontIndentBeyond = 200;\n/**\nEnables reindentation on input. When a language defines an\n`indentOnInput` field in its [language\ndata](https://codemirror.net/6/docs/ref/#state.EditorState.languageDataAt), which must hold a regular\nexpression, the line at the cursor will be reindented whenever new\ntext is typed and the input from the start of the line up to the\ncursor matches that regexp.\n\nTo avoid unneccesary reindents, it is recommended to start the\nregexp with `^` (usually followed by `\\s*`), and end it with `$`.\nFor example, `/^\\s*\\}$/` will reindent when a closing brace is\nadded at the start of a line.\n*/\nfunction indentOnInput() {\n    return EditorState.transactionFilter.of(tr => {\n        if (!tr.docChanged || !tr.isUserEvent(\"input.type\") && !tr.isUserEvent(\"input.complete\"))\n            return tr;\n        let rules = tr.startState.languageDataAt(\"indentOnInput\", tr.startState.selection.main.head);\n        if (!rules.length)\n            return tr;\n        let doc = tr.newDoc, { head } = tr.newSelection.main, line = doc.lineAt(head);\n        if (head > line.from + DontIndentBeyond)\n            return tr;\n        let lineStart = doc.sliceString(line.from, head);\n        if (!rules.some(r => r.test(lineStart)))\n            return tr;\n        let { state } = tr, last = -1, changes = [];\n        for (let { head } of state.selection.ranges) {\n            let line = state.doc.lineAt(head);\n            if (line.from == last)\n                continue;\n            last = line.from;\n            let indent = getIndentation(state, line.from);\n            if (indent == null)\n                continue;\n            let cur = /^\\s*/.exec(line.text)[0];\n            let norm = indentString(state, indent);\n            if (cur != norm)\n                changes.push({ from: line.from, to: line.from + cur.length, insert: norm });\n        }\n        return changes.length ? [tr, { changes, sequential: true }] : tr;\n    });\n}\n\n/**\nA facet that registers a code folding service. When called with\nthe extent of a line, such a function should return a foldable\nrange that starts on that line (but continues beyond it), if one\ncan be found.\n*/\nconst foldService = /*@__PURE__*/Facet.define();\n/**\nThis node prop is used to associate folding information with\nsyntax node types. Given a syntax node, it should check whether\nthat tree is foldable and return the range that can be collapsed\nwhen it is.\n*/\nconst foldNodeProp = /*@__PURE__*/new NodeProp();\n/**\n[Fold](https://codemirror.net/6/docs/ref/#language.foldNodeProp) function that folds everything but\nthe first and the last child of a syntax node. Useful for nodes\nthat start and end with delimiters.\n*/\nfunction foldInside(node) {\n    let first = node.firstChild, last = node.lastChild;\n    return first && first.to < last.from ? { from: first.to, to: last.type.isError ? node.to : last.from } : null;\n}\nfunction syntaxFolding(state, start, end) {\n    let tree = syntaxTree(state);\n    if (tree.length < end)\n        return null;\n    let stack = tree.resolveStack(end, 1);\n    let found = null;\n    for (let iter = stack; iter; iter = iter.next) {\n        let cur = iter.node;\n        if (cur.to <= end || cur.from > end)\n            continue;\n        if (found && cur.from < start)\n            break;\n        let prop = cur.type.prop(foldNodeProp);\n        if (prop && (cur.to < tree.length - 50 || tree.length == state.doc.length || !isUnfinished(cur))) {\n            let value = prop(cur, state);\n            if (value && value.from <= end && value.from >= start && value.to > end)\n                found = value;\n        }\n    }\n    return found;\n}\nfunction isUnfinished(node) {\n    let ch = node.lastChild;\n    return ch && ch.to == node.to && ch.type.isError;\n}\n/**\nCheck whether the given line is foldable. First asks any fold\nservices registered through\n[`foldService`](https://codemirror.net/6/docs/ref/#language.foldService), and if none of them return\na result, tries to query the [fold node\nprop](https://codemirror.net/6/docs/ref/#language.foldNodeProp) of syntax nodes that cover the end\nof the line.\n*/\nfunction foldable(state, lineStart, lineEnd) {\n    for (let service of state.facet(foldService)) {\n        let result = service(state, lineStart, lineEnd);\n        if (result)\n            return result;\n    }\n    return syntaxFolding(state, lineStart, lineEnd);\n}\nfunction mapRange(range, mapping) {\n    let from = mapping.mapPos(range.from, 1), to = mapping.mapPos(range.to, -1);\n    return from >= to ? undefined : { from, to };\n}\n/**\nState effect that can be attached to a transaction to fold the\ngiven range. (You probably only need this in exceptional\ncircumstances—usually you'll just want to let\n[`foldCode`](https://codemirror.net/6/docs/ref/#language.foldCode) and the [fold\ngutter](https://codemirror.net/6/docs/ref/#language.foldGutter) create the transactions.)\n*/\nconst foldEffect = /*@__PURE__*/StateEffect.define({ map: mapRange });\n/**\nState effect that unfolds the given range (if it was folded).\n*/\nconst unfoldEffect = /*@__PURE__*/StateEffect.define({ map: mapRange });\nfunction selectedLines(view) {\n    let lines = [];\n    for (let { head } of view.state.selection.ranges) {\n        if (lines.some(l => l.from <= head && l.to >= head))\n            continue;\n        lines.push(view.lineBlockAt(head));\n    }\n    return lines;\n}\n/**\nThe state field that stores the folded ranges (as a [decoration\nset](https://codemirror.net/6/docs/ref/#view.DecorationSet)). Can be passed to\n[`EditorState.toJSON`](https://codemirror.net/6/docs/ref/#state.EditorState.toJSON) and\n[`fromJSON`](https://codemirror.net/6/docs/ref/#state.EditorState^fromJSON) to serialize the fold\nstate.\n*/\nconst foldState = /*@__PURE__*/StateField.define({\n    create() {\n        return Decoration.none;\n    },\n    update(folded, tr) {\n        folded = folded.map(tr.changes);\n        for (let e of tr.effects) {\n            if (e.is(foldEffect) && !foldExists(folded, e.value.from, e.value.to)) {\n                let { preparePlaceholder } = tr.state.facet(foldConfig);\n                let widget = !preparePlaceholder ? foldWidget :\n                    Decoration.replace({ widget: new PreparedFoldWidget(preparePlaceholder(tr.state, e.value)) });\n                folded = folded.update({ add: [widget.range(e.value.from, e.value.to)] });\n            }\n            else if (e.is(unfoldEffect)) {\n                folded = folded.update({ filter: (from, to) => e.value.from != from || e.value.to != to,\n                    filterFrom: e.value.from, filterTo: e.value.to });\n            }\n        }\n        // Clear folded ranges that cover the selection head\n        if (tr.selection) {\n            let onSelection = false, { head } = tr.selection.main;\n            folded.between(head, head, (a, b) => { if (a < head && b > head)\n                onSelection = true; });\n            if (onSelection)\n                folded = folded.update({\n                    filterFrom: head,\n                    filterTo: head,\n                    filter: (a, b) => b <= head || a >= head\n                });\n        }\n        return folded;\n    },\n    provide: f => EditorView.decorations.from(f),\n    toJSON(folded, state) {\n        let ranges = [];\n        folded.between(0, state.doc.length, (from, to) => { ranges.push(from, to); });\n        return ranges;\n    },\n    fromJSON(value) {\n        if (!Array.isArray(value) || value.length % 2)\n            throw new RangeError(\"Invalid JSON for fold state\");\n        let ranges = [];\n        for (let i = 0; i < value.length;) {\n            let from = value[i++], to = value[i++];\n            if (typeof from != \"number\" || typeof to != \"number\")\n                throw new RangeError(\"Invalid JSON for fold state\");\n            ranges.push(foldWidget.range(from, to));\n        }\n        return Decoration.set(ranges, true);\n    }\n});\n/**\nGet a [range set](https://codemirror.net/6/docs/ref/#state.RangeSet) containing the folded ranges\nin the given state.\n*/\nfunction foldedRanges(state) {\n    return state.field(foldState, false) || RangeSet.empty;\n}\nfunction findFold(state, from, to) {\n    var _a;\n    let found = null;\n    (_a = state.field(foldState, false)) === null || _a === void 0 ? void 0 : _a.between(from, to, (from, to) => {\n        if (!found || found.from > from)\n            found = { from, to };\n    });\n    return found;\n}\nfunction foldExists(folded, from, to) {\n    let found = false;\n    folded.between(from, from, (a, b) => { if (a == from && b == to)\n        found = true; });\n    return found;\n}\nfunction maybeEnable(state, other) {\n    return state.field(foldState, false) ? other : other.concat(StateEffect.appendConfig.of(codeFolding()));\n}\n/**\nFold the lines that are selected, if possible.\n*/\nconst foldCode = view => {\n    for (let line of selectedLines(view)) {\n        let range = foldable(view.state, line.from, line.to);\n        if (range) {\n            view.dispatch({ effects: maybeEnable(view.state, [foldEffect.of(range), announceFold(view, range)]) });\n            return true;\n        }\n    }\n    return false;\n};\n/**\nUnfold folded ranges on selected lines.\n*/\nconst unfoldCode = view => {\n    if (!view.state.field(foldState, false))\n        return false;\n    let effects = [];\n    for (let line of selectedLines(view)) {\n        let folded = findFold(view.state, line.from, line.to);\n        if (folded)\n            effects.push(unfoldEffect.of(folded), announceFold(view, folded, false));\n    }\n    if (effects.length)\n        view.dispatch({ effects });\n    return effects.length > 0;\n};\nfunction announceFold(view, range, fold = true) {\n    let lineFrom = view.state.doc.lineAt(range.from).number, lineTo = view.state.doc.lineAt(range.to).number;\n    return EditorView.announce.of(`${view.state.phrase(fold ? \"Folded lines\" : \"Unfolded lines\")} ${lineFrom} ${view.state.phrase(\"to\")} ${lineTo}.`);\n}\n/**\nFold all top-level foldable ranges. Note that, in most cases,\nfolding information will depend on the [syntax\ntree](https://codemirror.net/6/docs/ref/#language.syntaxTree), and folding everything may not work\nreliably when the document hasn't been fully parsed (either\nbecause the editor state was only just initialized, or because the\ndocument is so big that the parser decided not to parse it\nentirely).\n*/\nconst foldAll = view => {\n    let { state } = view, effects = [];\n    for (let pos = 0; pos < state.doc.length;) {\n        let line = view.lineBlockAt(pos), range = foldable(state, line.from, line.to);\n        if (range)\n            effects.push(foldEffect.of(range));\n        pos = (range ? view.lineBlockAt(range.to) : line).to + 1;\n    }\n    if (effects.length)\n        view.dispatch({ effects: maybeEnable(view.state, effects) });\n    return !!effects.length;\n};\n/**\nUnfold all folded code.\n*/\nconst unfoldAll = view => {\n    let field = view.state.field(foldState, false);\n    if (!field || !field.size)\n        return false;\n    let effects = [];\n    field.between(0, view.state.doc.length, (from, to) => { effects.push(unfoldEffect.of({ from, to })); });\n    view.dispatch({ effects });\n    return true;\n};\n// Find the foldable region containing the given line, if one exists\nfunction foldableContainer(view, lineBlock) {\n    // Look backwards through line blocks until we find a foldable region that\n    // intersects with the line\n    for (let line = lineBlock;;) {\n        let foldableRegion = foldable(view.state, line.from, line.to);\n        if (foldableRegion && foldableRegion.to > lineBlock.from)\n            return foldableRegion;\n        if (!line.from)\n            return null;\n        line = view.lineBlockAt(line.from - 1);\n    }\n}\n/**\nToggle folding at cursors. Unfolds if there is an existing fold\nstarting in that line, tries to find a foldable range around it\notherwise.\n*/\nconst toggleFold = (view) => {\n    let effects = [];\n    for (let line of selectedLines(view)) {\n        let folded = findFold(view.state, line.from, line.to);\n        if (folded) {\n            effects.push(unfoldEffect.of(folded), announceFold(view, folded, false));\n        }\n        else {\n            let foldRange = foldableContainer(view, line);\n            if (foldRange)\n                effects.push(foldEffect.of(foldRange), announceFold(view, foldRange));\n        }\n    }\n    if (effects.length > 0)\n        view.dispatch({ effects: maybeEnable(view.state, effects) });\n    return !!effects.length;\n};\n/**\nDefault fold-related key bindings.\n\n - Ctrl-Shift-[ (Cmd-Alt-[ on macOS): [`foldCode`](https://codemirror.net/6/docs/ref/#language.foldCode).\n - Ctrl-Shift-] (Cmd-Alt-] on macOS): [`unfoldCode`](https://codemirror.net/6/docs/ref/#language.unfoldCode).\n - Ctrl-Alt-[: [`foldAll`](https://codemirror.net/6/docs/ref/#language.foldAll).\n - Ctrl-Alt-]: [`unfoldAll`](https://codemirror.net/6/docs/ref/#language.unfoldAll).\n*/\nconst foldKeymap = [\n    { key: \"Ctrl-Shift-[\", mac: \"Cmd-Alt-[\", run: foldCode },\n    { key: \"Ctrl-Shift-]\", mac: \"Cmd-Alt-]\", run: unfoldCode },\n    { key: \"Ctrl-Alt-[\", run: foldAll },\n    { key: \"Ctrl-Alt-]\", run: unfoldAll }\n];\nconst defaultConfig = {\n    placeholderDOM: null,\n    preparePlaceholder: null,\n    placeholderText: \"…\"\n};\nconst foldConfig = /*@__PURE__*/Facet.define({\n    combine(values) { return combineConfig(values, defaultConfig); }\n});\n/**\nCreate an extension that configures code folding.\n*/\nfunction codeFolding(config) {\n    let result = [foldState, baseTheme$1];\n    if (config)\n        result.push(foldConfig.of(config));\n    return result;\n}\nfunction widgetToDOM(view, prepared) {\n    let { state } = view, conf = state.facet(foldConfig);\n    let onclick = (event) => {\n        let line = view.lineBlockAt(view.posAtDOM(event.target));\n        let folded = findFold(view.state, line.from, line.to);\n        if (folded)\n            view.dispatch({ effects: unfoldEffect.of(folded) });\n        event.preventDefault();\n    };\n    if (conf.placeholderDOM)\n        return conf.placeholderDOM(view, onclick, prepared);\n    let element = document.createElement(\"span\");\n    element.textContent = conf.placeholderText;\n    element.setAttribute(\"aria-label\", state.phrase(\"folded code\"));\n    element.title = state.phrase(\"unfold\");\n    element.className = \"cm-foldPlaceholder\";\n    element.onclick = onclick;\n    return element;\n}\nconst foldWidget = /*@__PURE__*/Decoration.replace({ widget: /*@__PURE__*/new class extends WidgetType {\n        toDOM(view) { return widgetToDOM(view, null); }\n    } });\nclass PreparedFoldWidget extends WidgetType {\n    constructor(value) {\n        super();\n        this.value = value;\n    }\n    eq(other) { return this.value == other.value; }\n    toDOM(view) { return widgetToDOM(view, this.value); }\n}\nconst foldGutterDefaults = {\n    openText: \"⌄\",\n    closedText: \"›\",\n    markerDOM: null,\n    domEventHandlers: {},\n    foldingChanged: () => false\n};\nclass FoldMarker extends GutterMarker {\n    constructor(config, open) {\n        super();\n        this.config = config;\n        this.open = open;\n    }\n    eq(other) { return this.config == other.config && this.open == other.open; }\n    toDOM(view) {\n        if (this.config.markerDOM)\n            return this.config.markerDOM(this.open);\n        let span = document.createElement(\"span\");\n        span.textContent = this.open ? this.config.openText : this.config.closedText;\n        span.title = view.state.phrase(this.open ? \"Fold line\" : \"Unfold line\");\n        return span;\n    }\n}\n/**\nCreate an extension that registers a fold gutter, which shows a\nfold status indicator before foldable lines (which can be clicked\nto fold or unfold the line).\n*/\nfunction foldGutter(config = {}) {\n    let fullConfig = Object.assign(Object.assign({}, foldGutterDefaults), config);\n    let canFold = new FoldMarker(fullConfig, true), canUnfold = new FoldMarker(fullConfig, false);\n    let markers = ViewPlugin.fromClass(class {\n        constructor(view) {\n            this.from = view.viewport.from;\n            this.markers = this.buildMarkers(view);\n        }\n        update(update) {\n            if (update.docChanged || update.viewportChanged ||\n                update.startState.facet(language) != update.state.facet(language) ||\n                update.startState.field(foldState, false) != update.state.field(foldState, false) ||\n                syntaxTree(update.startState) != syntaxTree(update.state) ||\n                fullConfig.foldingChanged(update))\n                this.markers = this.buildMarkers(update.view);\n        }\n        buildMarkers(view) {\n            let builder = new RangeSetBuilder();\n            for (let line of view.viewportLineBlocks) {\n                let mark = findFold(view.state, line.from, line.to) ? canUnfold\n                    : foldable(view.state, line.from, line.to) ? canFold : null;\n                if (mark)\n                    builder.add(line.from, line.from, mark);\n            }\n            return builder.finish();\n        }\n    });\n    let { domEventHandlers } = fullConfig;\n    return [\n        markers,\n        gutter({\n            class: \"cm-foldGutter\",\n            markers(view) { var _a; return ((_a = view.plugin(markers)) === null || _a === void 0 ? void 0 : _a.markers) || RangeSet.empty; },\n            initialSpacer() {\n                return new FoldMarker(fullConfig, false);\n            },\n            domEventHandlers: Object.assign(Object.assign({}, domEventHandlers), { click: (view, line, event) => {\n                    if (domEventHandlers.click && domEventHandlers.click(view, line, event))\n                        return true;\n                    let folded = findFold(view.state, line.from, line.to);\n                    if (folded) {\n                        view.dispatch({ effects: unfoldEffect.of(folded) });\n                        return true;\n                    }\n                    let range = foldable(view.state, line.from, line.to);\n                    if (range) {\n                        view.dispatch({ effects: foldEffect.of(range) });\n                        return true;\n                    }\n                    return false;\n                } })\n        }),\n        codeFolding()\n    ];\n}\nconst baseTheme$1 = /*@__PURE__*/EditorView.baseTheme({\n    \".cm-foldPlaceholder\": {\n        backgroundColor: \"#eee\",\n        border: \"1px solid #ddd\",\n        color: \"#888\",\n        borderRadius: \".2em\",\n        margin: \"0 1px\",\n        padding: \"0 1px\",\n        cursor: \"pointer\"\n    },\n    \".cm-foldGutter span\": {\n        padding: \"0 1px\",\n        cursor: \"pointer\"\n    }\n});\n\n/**\nA highlight style associates CSS styles with higlighting\n[tags](https://lezer.codemirror.net/docs/ref#highlight.Tag).\n*/\nclass HighlightStyle {\n    constructor(\n    /**\n    The tag styles used to create this highlight style.\n    */\n    specs, options) {\n        this.specs = specs;\n        let modSpec;\n        function def(spec) {\n            let cls = StyleModule.newName();\n            (modSpec || (modSpec = Object.create(null)))[\".\" + cls] = spec;\n            return cls;\n        }\n        const all = typeof options.all == \"string\" ? options.all : options.all ? def(options.all) : undefined;\n        const scopeOpt = options.scope;\n        this.scope = scopeOpt instanceof Language ? (type) => type.prop(languageDataProp) == scopeOpt.data\n            : scopeOpt ? (type) => type == scopeOpt : undefined;\n        this.style = tagHighlighter(specs.map(style => ({\n            tag: style.tag,\n            class: style.class || def(Object.assign({}, style, { tag: null }))\n        })), {\n            all,\n        }).style;\n        this.module = modSpec ? new StyleModule(modSpec) : null;\n        this.themeType = options.themeType;\n    }\n    /**\n    Create a highlighter style that associates the given styles to\n    the given tags. The specs must be objects that hold a style tag\n    or array of tags in their `tag` property, and either a single\n    `class` property providing a static CSS class (for highlighter\n    that rely on external styling), or a\n    [`style-mod`](https://github.com/marijnh/style-mod#documentation)-style\n    set of CSS properties (which define the styling for those tags).\n    \n    The CSS rules created for a highlighter will be emitted in the\n    order of the spec's properties. That means that for elements that\n    have multiple tags associated with them, styles defined further\n    down in the list will have a higher CSS precedence than styles\n    defined earlier.\n    */\n    static define(specs, options) {\n        return new HighlightStyle(specs, options || {});\n    }\n}\nconst highlighterFacet = /*@__PURE__*/Facet.define();\nconst fallbackHighlighter = /*@__PURE__*/Facet.define({\n    combine(values) { return values.length ? [values[0]] : null; }\n});\nfunction getHighlighters(state) {\n    let main = state.facet(highlighterFacet);\n    return main.length ? main : state.facet(fallbackHighlighter);\n}\n/**\nWrap a highlighter in an editor extension that uses it to apply\nsyntax highlighting to the editor content.\n\nWhen multiple (non-fallback) styles are provided, the styling\napplied is the union of the classes they emit.\n*/\nfunction syntaxHighlighting(highlighter, options) {\n    let ext = [treeHighlighter], themeType;\n    if (highlighter instanceof HighlightStyle) {\n        if (highlighter.module)\n            ext.push(EditorView.styleModule.of(highlighter.module));\n        themeType = highlighter.themeType;\n    }\n    if (options === null || options === void 0 ? void 0 : options.fallback)\n        ext.push(fallbackHighlighter.of(highlighter));\n    else if (themeType)\n        ext.push(highlighterFacet.computeN([EditorView.darkTheme], state => {\n            return state.facet(EditorView.darkTheme) == (themeType == \"dark\") ? [highlighter] : [];\n        }));\n    else\n        ext.push(highlighterFacet.of(highlighter));\n    return ext;\n}\n/**\nReturns the CSS classes (if any) that the highlighters active in\nthe state would assign to the given style\n[tags](https://lezer.codemirror.net/docs/ref#highlight.Tag) and\n(optional) language\n[scope](https://codemirror.net/6/docs/ref/#language.HighlightStyle^define^options.scope).\n*/\nfunction highlightingFor(state, tags, scope) {\n    let highlighters = getHighlighters(state);\n    let result = null;\n    if (highlighters)\n        for (let highlighter of highlighters) {\n            if (!highlighter.scope || scope && highlighter.scope(scope)) {\n                let cls = highlighter.style(tags);\n                if (cls)\n                    result = result ? result + \" \" + cls : cls;\n            }\n        }\n    return result;\n}\nclass TreeHighlighter {\n    constructor(view) {\n        this.markCache = Object.create(null);\n        this.tree = syntaxTree(view.state);\n        this.decorations = this.buildDeco(view, getHighlighters(view.state));\n        this.decoratedTo = view.viewport.to;\n    }\n    update(update) {\n        let tree = syntaxTree(update.state), highlighters = getHighlighters(update.state);\n        let styleChange = highlighters != getHighlighters(update.startState);\n        let { viewport } = update.view, decoratedToMapped = update.changes.mapPos(this.decoratedTo, 1);\n        if (tree.length < viewport.to && !styleChange && tree.type == this.tree.type && decoratedToMapped >= viewport.to) {\n            this.decorations = this.decorations.map(update.changes);\n            this.decoratedTo = decoratedToMapped;\n        }\n        else if (tree != this.tree || update.viewportChanged || styleChange) {\n            this.tree = tree;\n            this.decorations = this.buildDeco(update.view, highlighters);\n            this.decoratedTo = viewport.to;\n        }\n    }\n    buildDeco(view, highlighters) {\n        if (!highlighters || !this.tree.length)\n            return Decoration.none;\n        let builder = new RangeSetBuilder();\n        for (let { from, to } of view.visibleRanges) {\n            highlightTree(this.tree, highlighters, (from, to, style) => {\n                builder.add(from, to, this.markCache[style] || (this.markCache[style] = Decoration.mark({ class: style })));\n            }, from, to);\n        }\n        return builder.finish();\n    }\n}\nconst treeHighlighter = /*@__PURE__*/Prec.high(/*@__PURE__*/ViewPlugin.fromClass(TreeHighlighter, {\n    decorations: v => v.decorations\n}));\n/**\nA default highlight style (works well with light themes).\n*/\nconst defaultHighlightStyle = /*@__PURE__*/HighlightStyle.define([\n    { tag: tags.meta,\n        color: \"#404740\" },\n    { tag: tags.link,\n        textDecoration: \"underline\" },\n    { tag: tags.heading,\n        textDecoration: \"underline\",\n        fontWeight: \"bold\" },\n    { tag: tags.emphasis,\n        fontStyle: \"italic\" },\n    { tag: tags.strong,\n        fontWeight: \"bold\" },\n    { tag: tags.strikethrough,\n        textDecoration: \"line-through\" },\n    { tag: tags.keyword,\n        color: \"#708\" },\n    { tag: [tags.atom, tags.bool, tags.url, tags.contentSeparator, tags.labelName],\n        color: \"#219\" },\n    { tag: [tags.literal, tags.inserted],\n        color: \"#164\" },\n    { tag: [tags.string, tags.deleted],\n        color: \"#a11\" },\n    { tag: [tags.regexp, tags.escape, /*@__PURE__*/tags.special(tags.string)],\n        color: \"#e40\" },\n    { tag: /*@__PURE__*/tags.definition(tags.variableName),\n        color: \"#00f\" },\n    { tag: /*@__PURE__*/tags.local(tags.variableName),\n        color: \"#30a\" },\n    { tag: [tags.typeName, tags.namespace],\n        color: \"#085\" },\n    { tag: tags.className,\n        color: \"#167\" },\n    { tag: [/*@__PURE__*/tags.special(tags.variableName), tags.macroName],\n        color: \"#256\" },\n    { tag: /*@__PURE__*/tags.definition(tags.propertyName),\n        color: \"#00c\" },\n    { tag: tags.comment,\n        color: \"#940\" },\n    { tag: tags.invalid,\n        color: \"#f00\" }\n]);\n\nconst baseTheme = /*@__PURE__*/EditorView.baseTheme({\n    \"&.cm-focused .cm-matchingBracket\": { backgroundColor: \"#328c8252\" },\n    \"&.cm-focused .cm-nonmatchingBracket\": { backgroundColor: \"#bb555544\" }\n});\nconst DefaultScanDist = 10000, DefaultBrackets = \"()[]{}\";\nconst bracketMatchingConfig = /*@__PURE__*/Facet.define({\n    combine(configs) {\n        return combineConfig(configs, {\n            afterCursor: true,\n            brackets: DefaultBrackets,\n            maxScanDistance: DefaultScanDist,\n            renderMatch: defaultRenderMatch\n        });\n    }\n});\nconst matchingMark = /*@__PURE__*/Decoration.mark({ class: \"cm-matchingBracket\" }), nonmatchingMark = /*@__PURE__*/Decoration.mark({ class: \"cm-nonmatchingBracket\" });\nfunction defaultRenderMatch(match) {\n    let decorations = [];\n    let mark = match.matched ? matchingMark : nonmatchingMark;\n    decorations.push(mark.range(match.start.from, match.start.to));\n    if (match.end)\n        decorations.push(mark.range(match.end.from, match.end.to));\n    return decorations;\n}\nconst bracketMatchingState = /*@__PURE__*/StateField.define({\n    create() { return Decoration.none; },\n    update(deco, tr) {\n        if (!tr.docChanged && !tr.selection)\n            return deco;\n        let decorations = [];\n        let config = tr.state.facet(bracketMatchingConfig);\n        for (let range of tr.state.selection.ranges) {\n            if (!range.empty)\n                continue;\n            let match = matchBrackets(tr.state, range.head, -1, config)\n                || (range.head > 0 && matchBrackets(tr.state, range.head - 1, 1, config))\n                || (config.afterCursor &&\n                    (matchBrackets(tr.state, range.head, 1, config) ||\n                        (range.head < tr.state.doc.length && matchBrackets(tr.state, range.head + 1, -1, config))));\n            if (match)\n                decorations = decorations.concat(config.renderMatch(match, tr.state));\n        }\n        return Decoration.set(decorations, true);\n    },\n    provide: f => EditorView.decorations.from(f)\n});\nconst bracketMatchingUnique = [\n    bracketMatchingState,\n    baseTheme\n];\n/**\nCreate an extension that enables bracket matching. Whenever the\ncursor is next to a bracket, that bracket and the one it matches\nare highlighted. Or, when no matching bracket is found, another\nhighlighting style is used to indicate this.\n*/\nfunction bracketMatching(config = {}) {\n    return [bracketMatchingConfig.of(config), bracketMatchingUnique];\n}\n/**\nWhen larger syntax nodes, such as HTML tags, are marked as\nopening/closing, it can be a bit messy to treat the whole node as\na matchable bracket. This node prop allows you to define, for such\na node, a ‘handle’—the part of the node that is highlighted, and\nthat the cursor must be on to activate highlighting in the first\nplace.\n*/\nconst bracketMatchingHandle = /*@__PURE__*/new NodeProp();\nfunction matchingNodes(node, dir, brackets) {\n    let byProp = node.prop(dir < 0 ? NodeProp.openedBy : NodeProp.closedBy);\n    if (byProp)\n        return byProp;\n    if (node.name.length == 1) {\n        let index = brackets.indexOf(node.name);\n        if (index > -1 && index % 2 == (dir < 0 ? 1 : 0))\n            return [brackets[index + dir]];\n    }\n    return null;\n}\nfunction findHandle(node) {\n    let hasHandle = node.type.prop(bracketMatchingHandle);\n    return hasHandle ? hasHandle(node.node) : node;\n}\n/**\nFind the matching bracket for the token at `pos`, scanning\ndirection `dir`. Only the `brackets` and `maxScanDistance`\nproperties are used from `config`, if given. Returns null if no\nbracket was found at `pos`, or a match result otherwise.\n*/\nfunction matchBrackets(state, pos, dir, config = {}) {\n    let maxScanDistance = config.maxScanDistance || DefaultScanDist, brackets = config.brackets || DefaultBrackets;\n    let tree = syntaxTree(state), node = tree.resolveInner(pos, dir);\n    for (let cur = node; cur; cur = cur.parent) {\n        let matches = matchingNodes(cur.type, dir, brackets);\n        if (matches && cur.from < cur.to) {\n            let handle = findHandle(cur);\n            if (handle && (dir > 0 ? pos >= handle.from && pos < handle.to : pos > handle.from && pos <= handle.to))\n                return matchMarkedBrackets(state, pos, dir, cur, handle, matches, brackets);\n        }\n    }\n    return matchPlainBrackets(state, pos, dir, tree, node.type, maxScanDistance, brackets);\n}\nfunction matchMarkedBrackets(_state, _pos, dir, token, handle, matching, brackets) {\n    let parent = token.parent, firstToken = { from: handle.from, to: handle.to };\n    let depth = 0, cursor = parent === null || parent === void 0 ? void 0 : parent.cursor();\n    if (cursor && (dir < 0 ? cursor.childBefore(token.from) : cursor.childAfter(token.to)))\n        do {\n            if (dir < 0 ? cursor.to <= token.from : cursor.from >= token.to) {\n                if (depth == 0 && matching.indexOf(cursor.type.name) > -1 && cursor.from < cursor.to) {\n                    let endHandle = findHandle(cursor);\n                    return { start: firstToken, end: endHandle ? { from: endHandle.from, to: endHandle.to } : undefined, matched: true };\n                }\n                else if (matchingNodes(cursor.type, dir, brackets)) {\n                    depth++;\n                }\n                else if (matchingNodes(cursor.type, -dir, brackets)) {\n                    if (depth == 0) {\n                        let endHandle = findHandle(cursor);\n                        return {\n                            start: firstToken,\n                            end: endHandle && endHandle.from < endHandle.to ? { from: endHandle.from, to: endHandle.to } : undefined,\n                            matched: false\n                        };\n                    }\n                    depth--;\n                }\n            }\n        } while (dir < 0 ? cursor.prevSibling() : cursor.nextSibling());\n    return { start: firstToken, matched: false };\n}\nfunction matchPlainBrackets(state, pos, dir, tree, tokenType, maxScanDistance, brackets) {\n    let startCh = dir < 0 ? state.sliceDoc(pos - 1, pos) : state.sliceDoc(pos, pos + 1);\n    let bracket = brackets.indexOf(startCh);\n    if (bracket < 0 || (bracket % 2 == 0) != (dir > 0))\n        return null;\n    let startToken = { from: dir < 0 ? pos - 1 : pos, to: dir > 0 ? pos + 1 : pos };\n    let iter = state.doc.iterRange(pos, dir > 0 ? state.doc.length : 0), depth = 0;\n    for (let distance = 0; !(iter.next()).done && distance <= maxScanDistance;) {\n        let text = iter.value;\n        if (dir < 0)\n            distance += text.length;\n        let basePos = pos + distance * dir;\n        for (let pos = dir > 0 ? 0 : text.length - 1, end = dir > 0 ? text.length : -1; pos != end; pos += dir) {\n            let found = brackets.indexOf(text[pos]);\n            if (found < 0 || tree.resolveInner(basePos + pos, 1).type != tokenType)\n                continue;\n            if ((found % 2 == 0) == (dir > 0)) {\n                depth++;\n            }\n            else if (depth == 1) { // Closing\n                return { start: startToken, end: { from: basePos + pos, to: basePos + pos + 1 }, matched: (found >> 1) == (bracket >> 1) };\n            }\n            else {\n                depth--;\n            }\n        }\n        if (dir > 0)\n            distance += text.length;\n    }\n    return iter.done ? { start: startToken, matched: false } : null;\n}\n\n// Counts the column offset in a string, taking tabs into account.\n// Used mostly to find indentation.\nfunction countCol(string, end, tabSize, startIndex = 0, startValue = 0) {\n    if (end == null) {\n        end = string.search(/[^\\s\\u00a0]/);\n        if (end == -1)\n            end = string.length;\n    }\n    let n = startValue;\n    for (let i = startIndex; i < end; i++) {\n        if (string.charCodeAt(i) == 9)\n            n += tabSize - (n % tabSize);\n        else\n            n++;\n    }\n    return n;\n}\n/**\nEncapsulates a single line of input. Given to stream syntax code,\nwhich uses it to tokenize the content.\n*/\nclass StringStream {\n    /**\n    Create a stream.\n    */\n    constructor(\n    /**\n    The line.\n    */\n    string, tabSize, \n    /**\n    The current indent unit size.\n    */\n    indentUnit, overrideIndent) {\n        this.string = string;\n        this.tabSize = tabSize;\n        this.indentUnit = indentUnit;\n        this.overrideIndent = overrideIndent;\n        /**\n        The current position on the line.\n        */\n        this.pos = 0;\n        /**\n        The start position of the current token.\n        */\n        this.start = 0;\n        this.lastColumnPos = 0;\n        this.lastColumnValue = 0;\n    }\n    /**\n    True if we are at the end of the line.\n    */\n    eol() { return this.pos >= this.string.length; }\n    /**\n    True if we are at the start of the line.\n    */\n    sol() { return this.pos == 0; }\n    /**\n    Get the next code unit after the current position, or undefined\n    if we're at the end of the line.\n    */\n    peek() { return this.string.charAt(this.pos) || undefined; }\n    /**\n    Read the next code unit and advance `this.pos`.\n    */\n    next() {\n        if (this.pos < this.string.length)\n            return this.string.charAt(this.pos++);\n    }\n    /**\n    Match the next character against the given string, regular\n    expression, or predicate. Consume and return it if it matches.\n    */\n    eat(match) {\n        let ch = this.string.charAt(this.pos);\n        let ok;\n        if (typeof match == \"string\")\n            ok = ch == match;\n        else\n            ok = ch && (match instanceof RegExp ? match.test(ch) : match(ch));\n        if (ok) {\n            ++this.pos;\n            return ch;\n        }\n    }\n    /**\n    Continue matching characters that match the given string,\n    regular expression, or predicate function. Return true if any\n    characters were consumed.\n    */\n    eatWhile(match) {\n        let start = this.pos;\n        while (this.eat(match)) { }\n        return this.pos > start;\n    }\n    /**\n    Consume whitespace ahead of `this.pos`. Return true if any was\n    found.\n    */\n    eatSpace() {\n        let start = this.pos;\n        while (/[\\s\\u00a0]/.test(this.string.charAt(this.pos)))\n            ++this.pos;\n        return this.pos > start;\n    }\n    /**\n    Move to the end of the line.\n    */\n    skipToEnd() { this.pos = this.string.length; }\n    /**\n    Move to directly before the given character, if found on the\n    current line.\n    */\n    skipTo(ch) {\n        let found = this.string.indexOf(ch, this.pos);\n        if (found > -1) {\n            this.pos = found;\n            return true;\n        }\n    }\n    /**\n    Move back `n` characters.\n    */\n    backUp(n) { this.pos -= n; }\n    /**\n    Get the column position at `this.pos`.\n    */\n    column() {\n        if (this.lastColumnPos < this.start) {\n            this.lastColumnValue = countCol(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);\n            this.lastColumnPos = this.start;\n        }\n        return this.lastColumnValue;\n    }\n    /**\n    Get the indentation column of the current line.\n    */\n    indentation() {\n        var _a;\n        return (_a = this.overrideIndent) !== null && _a !== void 0 ? _a : countCol(this.string, null, this.tabSize);\n    }\n    /**\n    Match the input against the given string or regular expression\n    (which should start with a `^`). Return true or the regexp match\n    if it matches.\n    \n    Unless `consume` is set to `false`, this will move `this.pos`\n    past the matched text.\n    \n    When matching a string `caseInsensitive` can be set to true to\n    make the match case-insensitive.\n    */\n    match(pattern, consume, caseInsensitive) {\n        if (typeof pattern == \"string\") {\n            let cased = (str) => caseInsensitive ? str.toLowerCase() : str;\n            let substr = this.string.substr(this.pos, pattern.length);\n            if (cased(substr) == cased(pattern)) {\n                if (consume !== false)\n                    this.pos += pattern.length;\n                return true;\n            }\n            else\n                return null;\n        }\n        else {\n            let match = this.string.slice(this.pos).match(pattern);\n            if (match && match.index > 0)\n                return null;\n            if (match && consume !== false)\n                this.pos += match[0].length;\n            return match;\n        }\n    }\n    /**\n    Get the current token.\n    */\n    current() { return this.string.slice(this.start, this.pos); }\n}\n\nfunction fullParser(spec) {\n    return {\n        name: spec.name || \"\",\n        token: spec.token,\n        blankLine: spec.blankLine || (() => { }),\n        startState: spec.startState || (() => true),\n        copyState: spec.copyState || defaultCopyState,\n        indent: spec.indent || (() => null),\n        languageData: spec.languageData || {},\n        tokenTable: spec.tokenTable || noTokens\n    };\n}\nfunction defaultCopyState(state) {\n    if (typeof state != \"object\")\n        return state;\n    let newState = {};\n    for (let prop in state) {\n        let val = state[prop];\n        newState[prop] = (val instanceof Array ? val.slice() : val);\n    }\n    return newState;\n}\nconst IndentedFrom = /*@__PURE__*/new WeakMap();\n/**\nA [language](https://codemirror.net/6/docs/ref/#language.Language) class based on a CodeMirror\n5-style [streaming parser](https://codemirror.net/6/docs/ref/#language.StreamParser).\n*/\nclass StreamLanguage extends Language {\n    constructor(parser) {\n        let data = defineLanguageFacet(parser.languageData);\n        let p = fullParser(parser), self;\n        let impl = new class extends Parser {\n            createParse(input, fragments, ranges) {\n                return new Parse(self, input, fragments, ranges);\n            }\n        };\n        super(data, impl, [], parser.name);\n        this.topNode = docID(data, this);\n        self = this;\n        this.streamParser = p;\n        this.stateAfter = new NodeProp({ perNode: true });\n        this.tokenTable = parser.tokenTable ? new TokenTable(p.tokenTable) : defaultTokenTable;\n    }\n    /**\n    Define a stream language.\n    */\n    static define(spec) { return new StreamLanguage(spec); }\n    /**\n    @internal\n    */\n    getIndent(cx) {\n        let from = undefined;\n        let { overrideIndentation } = cx.options;\n        if (overrideIndentation) {\n            from = IndentedFrom.get(cx.state);\n            if (from != null && from < cx.pos - 1e4)\n                from = undefined;\n        }\n        let start = findState(this, cx.node.tree, cx.node.from, cx.node.from, from !== null && from !== void 0 ? from : cx.pos), statePos, state;\n        if (start) {\n            state = start.state;\n            statePos = start.pos + 1;\n        }\n        else {\n            state = this.streamParser.startState(cx.unit);\n            statePos = cx.node.from;\n        }\n        if (cx.pos - statePos > 10000 /* C.MaxIndentScanDist */)\n            return null;\n        while (statePos < cx.pos) {\n            let line = cx.state.doc.lineAt(statePos), end = Math.min(cx.pos, line.to);\n            if (line.length) {\n                let indentation = overrideIndentation ? overrideIndentation(line.from) : -1;\n                let stream = new StringStream(line.text, cx.state.tabSize, cx.unit, indentation < 0 ? undefined : indentation);\n                while (stream.pos < end - line.from)\n                    readToken(this.streamParser.token, stream, state);\n            }\n            else {\n                this.streamParser.blankLine(state, cx.unit);\n            }\n            if (end == cx.pos)\n                break;\n            statePos = line.to + 1;\n        }\n        let line = cx.lineAt(cx.pos);\n        if (overrideIndentation && from == null)\n            IndentedFrom.set(cx.state, line.from);\n        return this.streamParser.indent(state, /^\\s*(.*)/.exec(line.text)[1], cx);\n    }\n    get allowsNesting() { return false; }\n}\nfunction findState(lang, tree, off, startPos, before) {\n    let state = off >= startPos && off + tree.length <= before && tree.prop(lang.stateAfter);\n    if (state)\n        return { state: lang.streamParser.copyState(state), pos: off + tree.length };\n    for (let i = tree.children.length - 1; i >= 0; i--) {\n        let child = tree.children[i], pos = off + tree.positions[i];\n        let found = child instanceof Tree && pos < before && findState(lang, child, pos, startPos, before);\n        if (found)\n            return found;\n    }\n    return null;\n}\nfunction cutTree(lang, tree, from, to, inside) {\n    if (inside && from <= 0 && to >= tree.length)\n        return tree;\n    if (!inside && from == 0 && tree.type == lang.topNode)\n        inside = true;\n    for (let i = tree.children.length - 1; i >= 0; i--) {\n        let pos = tree.positions[i], child = tree.children[i], inner;\n        if (pos < to && child instanceof Tree) {\n            if (!(inner = cutTree(lang, child, from - pos, to - pos, inside)))\n                break;\n            return !inside ? inner\n                : new Tree(tree.type, tree.children.slice(0, i).concat(inner), tree.positions.slice(0, i + 1), pos + inner.length);\n        }\n    }\n    return null;\n}\nfunction findStartInFragments(lang, fragments, startPos, endPos, editorState) {\n    for (let f of fragments) {\n        let from = f.from + (f.openStart ? 25 : 0), to = f.to - (f.openEnd ? 25 : 0);\n        let found = from <= startPos && to > startPos && findState(lang, f.tree, 0 - f.offset, startPos, to), tree;\n        if (found && found.pos <= endPos && (tree = cutTree(lang, f.tree, startPos + f.offset, found.pos + f.offset, false)))\n            return { state: found.state, tree };\n    }\n    return { state: lang.streamParser.startState(editorState ? getIndentUnit(editorState) : 4), tree: Tree.empty };\n}\nclass Parse {\n    constructor(lang, input, fragments, ranges) {\n        this.lang = lang;\n        this.input = input;\n        this.fragments = fragments;\n        this.ranges = ranges;\n        this.stoppedAt = null;\n        this.chunks = [];\n        this.chunkPos = [];\n        this.chunk = [];\n        this.chunkReused = undefined;\n        this.rangeIndex = 0;\n        this.to = ranges[ranges.length - 1].to;\n        let context = ParseContext.get(), from = ranges[0].from;\n        let { state, tree } = findStartInFragments(lang, fragments, from, this.to, context === null || context === void 0 ? void 0 : context.state);\n        this.state = state;\n        this.parsedPos = this.chunkStart = from + tree.length;\n        for (let i = 0; i < tree.children.length; i++) {\n            this.chunks.push(tree.children[i]);\n            this.chunkPos.push(tree.positions[i]);\n        }\n        if (context && this.parsedPos < context.viewport.from - 100000 /* C.MaxDistanceBeforeViewport */ &&\n            ranges.some(r => r.from <= context.viewport.from && r.to >= context.viewport.from)) {\n            this.state = this.lang.streamParser.startState(getIndentUnit(context.state));\n            context.skipUntilInView(this.parsedPos, context.viewport.from);\n            this.parsedPos = context.viewport.from;\n        }\n        this.moveRangeIndex();\n    }\n    advance() {\n        let context = ParseContext.get();\n        let parseEnd = this.stoppedAt == null ? this.to : Math.min(this.to, this.stoppedAt);\n        let end = Math.min(parseEnd, this.chunkStart + 2048 /* C.ChunkSize */);\n        if (context)\n            end = Math.min(end, context.viewport.to);\n        while (this.parsedPos < end)\n            this.parseLine(context);\n        if (this.chunkStart < this.parsedPos)\n            this.finishChunk();\n        if (this.parsedPos >= parseEnd)\n            return this.finish();\n        if (context && this.parsedPos >= context.viewport.to) {\n            context.skipUntilInView(this.parsedPos, parseEnd);\n            return this.finish();\n        }\n        return null;\n    }\n    stopAt(pos) {\n        this.stoppedAt = pos;\n    }\n    lineAfter(pos) {\n        let chunk = this.input.chunk(pos);\n        if (!this.input.lineChunks) {\n            let eol = chunk.indexOf(\"\\n\");\n            if (eol > -1)\n                chunk = chunk.slice(0, eol);\n        }\n        else if (chunk == \"\\n\") {\n            chunk = \"\";\n        }\n        return pos + chunk.length <= this.to ? chunk : chunk.slice(0, this.to - pos);\n    }\n    nextLine() {\n        let from = this.parsedPos, line = this.lineAfter(from), end = from + line.length;\n        for (let index = this.rangeIndex;;) {\n            let rangeEnd = this.ranges[index].to;\n            if (rangeEnd >= end)\n                break;\n            line = line.slice(0, rangeEnd - (end - line.length));\n            index++;\n            if (index == this.ranges.length)\n                break;\n            let rangeStart = this.ranges[index].from;\n            let after = this.lineAfter(rangeStart);\n            line += after;\n            end = rangeStart + after.length;\n        }\n        return { line, end };\n    }\n    skipGapsTo(pos, offset, side) {\n        for (;;) {\n            let end = this.ranges[this.rangeIndex].to, offPos = pos + offset;\n            if (side > 0 ? end > offPos : end >= offPos)\n                break;\n            let start = this.ranges[++this.rangeIndex].from;\n            offset += start - end;\n        }\n        return offset;\n    }\n    moveRangeIndex() {\n        while (this.ranges[this.rangeIndex].to < this.parsedPos)\n            this.rangeIndex++;\n    }\n    emitToken(id, from, to, offset) {\n        let size = 4;\n        if (this.ranges.length > 1) {\n            offset = this.skipGapsTo(from, offset, 1);\n            from += offset;\n            let len0 = this.chunk.length;\n            offset = this.skipGapsTo(to, offset, -1);\n            to += offset;\n            size += this.chunk.length - len0;\n        }\n        let last = this.chunk.length - 4;\n        if (size == 4 && last >= 0 && this.chunk[last] == id && this.chunk[last + 2] == from)\n            this.chunk[last + 2] = to;\n        else\n            this.chunk.push(id, from, to, size);\n        return offset;\n    }\n    parseLine(context) {\n        let { line, end } = this.nextLine(), offset = 0, { streamParser } = this.lang;\n        let stream = new StringStream(line, context ? context.state.tabSize : 4, context ? getIndentUnit(context.state) : 2);\n        if (stream.eol()) {\n            streamParser.blankLine(this.state, stream.indentUnit);\n        }\n        else {\n            while (!stream.eol()) {\n                let token = readToken(streamParser.token, stream, this.state);\n                if (token)\n                    offset = this.emitToken(this.lang.tokenTable.resolve(token), this.parsedPos + stream.start, this.parsedPos + stream.pos, offset);\n                if (stream.start > 10000 /* C.MaxLineLength */)\n                    break;\n            }\n        }\n        this.parsedPos = end;\n        this.moveRangeIndex();\n        if (this.parsedPos < this.to)\n            this.parsedPos++;\n    }\n    finishChunk() {\n        let tree = Tree.build({\n            buffer: this.chunk,\n            start: this.chunkStart,\n            length: this.parsedPos - this.chunkStart,\n            nodeSet,\n            topID: 0,\n            maxBufferLength: 2048 /* C.ChunkSize */,\n            reused: this.chunkReused\n        });\n        tree = new Tree(tree.type, tree.children, tree.positions, tree.length, [[this.lang.stateAfter, this.lang.streamParser.copyState(this.state)]]);\n        this.chunks.push(tree);\n        this.chunkPos.push(this.chunkStart - this.ranges[0].from);\n        this.chunk = [];\n        this.chunkReused = undefined;\n        this.chunkStart = this.parsedPos;\n    }\n    finish() {\n        return new Tree(this.lang.topNode, this.chunks, this.chunkPos, this.parsedPos - this.ranges[0].from).balance();\n    }\n}\nfunction readToken(token, stream, state) {\n    stream.start = stream.pos;\n    for (let i = 0; i < 10; i++) {\n        let result = token(stream, state);\n        if (stream.pos > stream.start)\n            return result;\n    }\n    throw new Error(\"Stream parser failed to advance stream.\");\n}\nconst noTokens = /*@__PURE__*/Object.create(null);\nconst typeArray = [NodeType.none];\nconst nodeSet = /*@__PURE__*/new NodeSet(typeArray);\nconst warned = [];\n// Cache of node types by name and tags\nconst byTag = /*@__PURE__*/Object.create(null);\nconst defaultTable = /*@__PURE__*/Object.create(null);\nfor (let [legacyName, name] of [\n    [\"variable\", \"variableName\"],\n    [\"variable-2\", \"variableName.special\"],\n    [\"string-2\", \"string.special\"],\n    [\"def\", \"variableName.definition\"],\n    [\"tag\", \"tagName\"],\n    [\"attribute\", \"attributeName\"],\n    [\"type\", \"typeName\"],\n    [\"builtin\", \"variableName.standard\"],\n    [\"qualifier\", \"modifier\"],\n    [\"error\", \"invalid\"],\n    [\"header\", \"heading\"],\n    [\"property\", \"propertyName\"]\n])\n    defaultTable[legacyName] = /*@__PURE__*/createTokenType(noTokens, name);\nclass TokenTable {\n    constructor(extra) {\n        this.extra = extra;\n        this.table = Object.assign(Object.create(null), defaultTable);\n    }\n    resolve(tag) {\n        return !tag ? 0 : this.table[tag] || (this.table[tag] = createTokenType(this.extra, tag));\n    }\n}\nconst defaultTokenTable = /*@__PURE__*/new TokenTable(noTokens);\nfunction warnForPart(part, msg) {\n    if (warned.indexOf(part) > -1)\n        return;\n    warned.push(part);\n    console.warn(msg);\n}\nfunction createTokenType(extra, tagStr) {\n    let tags$1 = [];\n    for (let name of tagStr.split(\" \")) {\n        let found = [];\n        for (let part of name.split(\".\")) {\n            let value = (extra[part] || tags[part]);\n            if (!value) {\n                warnForPart(part, `Unknown highlighting tag ${part}`);\n            }\n            else if (typeof value == \"function\") {\n                if (!found.length)\n                    warnForPart(part, `Modifier ${part} used at start of tag`);\n                else\n                    found = found.map(value);\n            }\n            else {\n                if (found.length)\n                    warnForPart(part, `Tag ${part} used as modifier`);\n                else\n                    found = Array.isArray(value) ? value : [value];\n            }\n        }\n        for (let tag of found)\n            tags$1.push(tag);\n    }\n    if (!tags$1.length)\n        return 0;\n    let name = tagStr.replace(/ /g, \"_\"), key = name + \" \" + tags$1.map(t => t.id);\n    let known = byTag[key];\n    if (known)\n        return known.id;\n    let type = byTag[key] = NodeType.define({\n        id: typeArray.length,\n        name,\n        props: [styleTags({ [name]: tags$1 })]\n    });\n    typeArray.push(type);\n    return type.id;\n}\nfunction docID(data, lang) {\n    let type = NodeType.define({ id: typeArray.length, name: \"Document\", props: [\n            languageDataProp.add(() => data),\n            indentNodeProp.add(() => cx => lang.getIndent(cx))\n        ], top: true });\n    typeArray.push(type);\n    return type;\n}\n\nfunction buildForLine(line) {\n    return line.length <= 4096 && /[\\u0590-\\u05f4\\u0600-\\u06ff\\u0700-\\u08ac\\ufb50-\\ufdff]/.test(line);\n}\nfunction textHasRTL(text) {\n    for (let i = text.iter(); !i.next().done;)\n        if (buildForLine(i.value))\n            return true;\n    return false;\n}\nfunction changeAddsRTL(change) {\n    let added = false;\n    change.iterChanges((fA, tA, fB, tB, ins) => {\n        if (!added && textHasRTL(ins))\n            added = true;\n    });\n    return added;\n}\nconst alwaysIsolate = /*@__PURE__*/Facet.define({ combine: values => values.some(x => x) });\n/**\nMake sure nodes\n[marked](https://lezer.codemirror.net/docs/ref/#common.NodeProp^isolate)\nas isolating for bidirectional text are rendered in a way that\nisolates them from the surrounding text.\n*/\nfunction bidiIsolates(options = {}) {\n    let extensions = [isolateMarks];\n    if (options.alwaysIsolate)\n        extensions.push(alwaysIsolate.of(true));\n    return extensions;\n}\nconst isolateMarks = /*@__PURE__*/ViewPlugin.fromClass(class {\n    constructor(view) {\n        this.always = view.state.facet(alwaysIsolate) ||\n            view.textDirection != Direction.LTR ||\n            view.state.facet(EditorView.perLineTextDirection);\n        this.hasRTL = !this.always && textHasRTL(view.state.doc);\n        this.tree = syntaxTree(view.state);\n        this.decorations = this.always || this.hasRTL ? buildDeco(view, this.tree, this.always) : Decoration.none;\n    }\n    update(update) {\n        let always = update.state.facet(alwaysIsolate) ||\n            update.view.textDirection != Direction.LTR ||\n            update.state.facet(EditorView.perLineTextDirection);\n        if (!always && !this.hasRTL && changeAddsRTL(update.changes))\n            this.hasRTL = true;\n        if (!always && !this.hasRTL)\n            return;\n        let tree = syntaxTree(update.state);\n        if (always != this.always || tree != this.tree || update.docChanged || update.viewportChanged) {\n            this.tree = tree;\n            this.always = always;\n            this.decorations = buildDeco(update.view, tree, always);\n        }\n    }\n}, {\n    provide: plugin => {\n        function access(view) {\n            var _a, _b;\n            return (_b = (_a = view.plugin(plugin)) === null || _a === void 0 ? void 0 : _a.decorations) !== null && _b !== void 0 ? _b : Decoration.none;\n        }\n        return [EditorView.outerDecorations.of(access),\n            Prec.lowest(EditorView.bidiIsolatedRanges.of(access))];\n    }\n});\nfunction buildDeco(view, tree, always) {\n    let deco = new RangeSetBuilder();\n    let ranges = view.visibleRanges;\n    if (!always)\n        ranges = clipRTLLines(ranges, view.state.doc);\n    for (let { from, to } of ranges) {\n        tree.iterate({\n            enter: node => {\n                let iso = node.type.prop(NodeProp.isolate);\n                if (iso)\n                    deco.add(node.from, node.to, marks[iso]);\n            },\n            from, to\n        });\n    }\n    return deco.finish();\n}\nfunction clipRTLLines(ranges, doc) {\n    let cur = doc.iter(), pos = 0, result = [], last = null;\n    for (let { from, to } of ranges) {\n        if (last && last.to > from) {\n            from = last.to;\n            if (from >= to)\n                continue;\n        }\n        if (pos + cur.value.length < from) {\n            cur.next(from - (pos + cur.value.length));\n            pos = from;\n        }\n        for (;;) {\n            let start = pos, end = pos + cur.value.length;\n            if (!cur.lineBreak && buildForLine(cur.value)) {\n                if (last && last.to > start - 10)\n                    last.to = Math.min(to, end);\n                else\n                    result.push(last = { from: start, to: Math.min(to, end) });\n            }\n            if (end >= to)\n                break;\n            pos = end;\n            cur.next();\n        }\n    }\n    return result;\n}\nconst marks = {\n    rtl: /*@__PURE__*/Decoration.mark({ class: \"cm-iso\", inclusive: true, attributes: { dir: \"rtl\" }, bidiIsolate: Direction.RTL }),\n    ltr: /*@__PURE__*/Decoration.mark({ class: \"cm-iso\", inclusive: true, attributes: { dir: \"ltr\" }, bidiIsolate: Direction.LTR }),\n    auto: /*@__PURE__*/Decoration.mark({ class: \"cm-iso\", inclusive: true, attributes: { dir: \"auto\" }, bidiIsolate: null })\n};\n\nexport { DocInput, HighlightStyle, IndentContext, LRLanguage, Language, LanguageDescription, LanguageSupport, ParseContext, StreamLanguage, StringStream, TreeIndentContext, bidiIsolates, bracketMatching, bracketMatchingHandle, codeFolding, continuedIndent, defaultHighlightStyle, defineLanguageFacet, delimitedIndent, ensureSyntaxTree, flatIndent, foldAll, foldCode, foldEffect, foldGutter, foldInside, foldKeymap, foldNodeProp, foldService, foldState, foldable, foldedRanges, forceParsing, getIndentUnit, getIndentation, highlightingFor, indentNodeProp, indentOnInput, indentRange, indentService, indentString, indentUnit, language, languageDataProp, matchBrackets, sublanguageProp, syntaxHighlighting, syntaxParserRunning, syntaxTree, syntaxTreeAvailable, toggleFold, unfoldAll, unfoldCode, unfoldEffect };\n","import { Decoration, showPanel, EditorView, ViewPlugin, gutter, showTooltip, hoverTooltip, getPanel, logException, WidgetType, GutterMarker } from '@codemirror/view';\nimport { StateEffect, StateField, Facet, combineConfig, RangeSet, RangeSetBuilder } from '@codemirror/state';\nimport elt from 'crelt';\n\nclass SelectedDiagnostic {\n    constructor(from, to, diagnostic) {\n        this.from = from;\n        this.to = to;\n        this.diagnostic = diagnostic;\n    }\n}\nclass LintState {\n    constructor(diagnostics, panel, selected) {\n        this.diagnostics = diagnostics;\n        this.panel = panel;\n        this.selected = selected;\n    }\n    static init(diagnostics, panel, state) {\n        // Filter the list of diagnostics for which to create markers\n        let markedDiagnostics = diagnostics;\n        let diagnosticFilter = state.facet(lintConfig).markerFilter;\n        if (diagnosticFilter)\n            markedDiagnostics = diagnosticFilter(markedDiagnostics, state);\n        let sorted = diagnostics.slice().sort((a, b) => a.from - b.from || a.to - b.to);\n        let deco = new RangeSetBuilder(), active = [], pos = 0;\n        for (let i = 0;;) {\n            let next = i == sorted.length ? null : sorted[i];\n            if (!next && !active.length)\n                break;\n            let from, to;\n            if (active.length) {\n                from = pos;\n                to = active.reduce((p, d) => Math.min(p, d.to), next && next.from > from ? next.from : 1e8);\n            }\n            else {\n                from = next.from;\n                to = next.to;\n                active.push(next);\n                i++;\n            }\n            while (i < sorted.length) {\n                let next = sorted[i];\n                if (next.from == from && (next.to > next.from || next.to == from)) {\n                    active.push(next);\n                    i++;\n                    to = Math.min(next.to, to);\n                }\n                else {\n                    to = Math.min(next.from, to);\n                    break;\n                }\n            }\n            let sev = maxSeverity(active);\n            if (active.some(d => d.from == d.to || (d.from == d.to - 1 && state.doc.lineAt(d.from).to == d.from))) {\n                deco.add(from, from, Decoration.widget({\n                    widget: new DiagnosticWidget(sev),\n                    diagnostics: active.slice()\n                }));\n            }\n            else {\n                let markClass = active.reduce((c, d) => d.markClass ? c + \" \" + d.markClass : c, \"\");\n                deco.add(from, to, Decoration.mark({\n                    class: \"cm-lintRange cm-lintRange-\" + sev + markClass,\n                    diagnostics: active.slice(),\n                    inclusiveEnd: active.some(a => a.to > to)\n                }));\n            }\n            pos = to;\n            for (let i = 0; i < active.length; i++)\n                if (active[i].to <= pos)\n                    active.splice(i--, 1);\n        }\n        let set = deco.finish();\n        return new LintState(set, panel, findDiagnostic(set));\n    }\n}\nfunction findDiagnostic(diagnostics, diagnostic = null, after = 0) {\n    let found = null;\n    diagnostics.between(after, 1e9, (from, to, { spec }) => {\n        if (diagnostic && spec.diagnostics.indexOf(diagnostic) < 0)\n            return;\n        if (!found)\n            found = new SelectedDiagnostic(from, to, diagnostic || spec.diagnostics[0]);\n        else if (spec.diagnostics.indexOf(found.diagnostic) < 0)\n            return false;\n        else\n            found = new SelectedDiagnostic(found.from, to, found.diagnostic);\n    });\n    return found;\n}\nfunction hideTooltip(tr, tooltip) {\n    let from = tooltip.pos, to = tooltip.end || from;\n    let result = tr.state.facet(lintConfig).hideOn(tr, from, to);\n    if (result != null)\n        return result;\n    let line = tr.startState.doc.lineAt(tooltip.pos);\n    return !!(tr.effects.some(e => e.is(setDiagnosticsEffect)) || tr.changes.touchesRange(line.from, Math.max(line.to, to)));\n}\nfunction maybeEnableLint(state, effects) {\n    return state.field(lintState, false) ? effects : effects.concat(StateEffect.appendConfig.of(lintExtensions));\n}\n/**\nReturns a transaction spec which updates the current set of\ndiagnostics, and enables the lint extension if if wasn't already\nactive.\n*/\nfunction setDiagnostics(state, diagnostics) {\n    return {\n        effects: maybeEnableLint(state, [setDiagnosticsEffect.of(diagnostics)])\n    };\n}\n/**\nThe state effect that updates the set of active diagnostics. Can\nbe useful when writing an extension that needs to track these.\n*/\nconst setDiagnosticsEffect = /*@__PURE__*/StateEffect.define();\nconst togglePanel = /*@__PURE__*/StateEffect.define();\nconst movePanelSelection = /*@__PURE__*/StateEffect.define();\nconst lintState = /*@__PURE__*/StateField.define({\n    create() {\n        return new LintState(Decoration.none, null, null);\n    },\n    update(value, tr) {\n        if (tr.docChanged && value.diagnostics.size) {\n            let mapped = value.diagnostics.map(tr.changes), selected = null, panel = value.panel;\n            if (value.selected) {\n                let selPos = tr.changes.mapPos(value.selected.from, 1);\n                selected = findDiagnostic(mapped, value.selected.diagnostic, selPos) || findDiagnostic(mapped, null, selPos);\n            }\n            if (!mapped.size && panel && tr.state.facet(lintConfig).autoPanel)\n                panel = null;\n            value = new LintState(mapped, panel, selected);\n        }\n        for (let effect of tr.effects) {\n            if (effect.is(setDiagnosticsEffect)) {\n                let panel = !tr.state.facet(lintConfig).autoPanel ? value.panel : effect.value.length ? LintPanel.open : null;\n                value = LintState.init(effect.value, panel, tr.state);\n            }\n            else if (effect.is(togglePanel)) {\n                value = new LintState(value.diagnostics, effect.value ? LintPanel.open : null, value.selected);\n            }\n            else if (effect.is(movePanelSelection)) {\n                value = new LintState(value.diagnostics, value.panel, effect.value);\n            }\n        }\n        return value;\n    },\n    provide: f => [showPanel.from(f, val => val.panel),\n        EditorView.decorations.from(f, s => s.diagnostics)]\n});\n/**\nReturns the number of active lint diagnostics in the given state.\n*/\nfunction diagnosticCount(state) {\n    let lint = state.field(lintState, false);\n    return lint ? lint.diagnostics.size : 0;\n}\nconst activeMark = /*@__PURE__*/Decoration.mark({ class: \"cm-lintRange cm-lintRange-active\" });\nfunction lintTooltip(view, pos, side) {\n    let { diagnostics } = view.state.field(lintState);\n    let found, start = -1, end = -1;\n    diagnostics.between(pos - (side < 0 ? 1 : 0), pos + (side > 0 ? 1 : 0), (from, to, { spec }) => {\n        if (pos >= from && pos <= to &&\n            (from == to || ((pos > from || side > 0) && (pos < to || side < 0)))) {\n            found = spec.diagnostics;\n            start = from;\n            end = to;\n            return false;\n        }\n    });\n    let diagnosticFilter = view.state.facet(lintConfig).tooltipFilter;\n    if (found && diagnosticFilter)\n        found = diagnosticFilter(found, view.state);\n    if (!found)\n        return null;\n    return {\n        pos: start,\n        end: end,\n        above: view.state.doc.lineAt(start).to < end,\n        create() {\n            return { dom: diagnosticsTooltip(view, found) };\n        }\n    };\n}\nfunction diagnosticsTooltip(view, diagnostics) {\n    return elt(\"ul\", { class: \"cm-tooltip-lint\" }, diagnostics.map(d => renderDiagnostic(view, d, false)));\n}\n/**\nCommand to open and focus the lint panel.\n*/\nconst openLintPanel = (view) => {\n    let field = view.state.field(lintState, false);\n    if (!field || !field.panel)\n        view.dispatch({ effects: maybeEnableLint(view.state, [togglePanel.of(true)]) });\n    let panel = getPanel(view, LintPanel.open);\n    if (panel)\n        panel.dom.querySelector(\".cm-panel-lint ul\").focus();\n    return true;\n};\n/**\nCommand to close the lint panel, when open.\n*/\nconst closeLintPanel = (view) => {\n    let field = view.state.field(lintState, false);\n    if (!field || !field.panel)\n        return false;\n    view.dispatch({ effects: togglePanel.of(false) });\n    return true;\n};\n/**\nMove the selection to the next diagnostic.\n*/\nconst nextDiagnostic = (view) => {\n    let field = view.state.field(lintState, false);\n    if (!field)\n        return false;\n    let sel = view.state.selection.main, next = field.diagnostics.iter(sel.to + 1);\n    if (!next.value) {\n        next = field.diagnostics.iter(0);\n        if (!next.value || next.from == sel.from && next.to == sel.to)\n            return false;\n    }\n    view.dispatch({ selection: { anchor: next.from, head: next.to }, scrollIntoView: true });\n    return true;\n};\n/**\nMove the selection to the previous diagnostic.\n*/\nconst previousDiagnostic = (view) => {\n    let { state } = view, field = state.field(lintState, false);\n    if (!field)\n        return false;\n    let sel = state.selection.main;\n    let prevFrom, prevTo, lastFrom, lastTo;\n    field.diagnostics.between(0, state.doc.length, (from, to) => {\n        if (to < sel.to && (prevFrom == null || prevFrom < from)) {\n            prevFrom = from;\n            prevTo = to;\n        }\n        if (lastFrom == null || from > lastFrom) {\n            lastFrom = from;\n            lastTo = to;\n        }\n    });\n    if (lastFrom == null || prevFrom == null && lastFrom == sel.from)\n        return false;\n    view.dispatch({ selection: { anchor: prevFrom !== null && prevFrom !== void 0 ? prevFrom : lastFrom, head: prevTo !== null && prevTo !== void 0 ? prevTo : lastTo }, scrollIntoView: true });\n    return true;\n};\n/**\nA set of default key bindings for the lint functionality.\n\n- Ctrl-Shift-m (Cmd-Shift-m on macOS): [`openLintPanel`](https://codemirror.net/6/docs/ref/#lint.openLintPanel)\n- F8: [`nextDiagnostic`](https://codemirror.net/6/docs/ref/#lint.nextDiagnostic)\n*/\nconst lintKeymap = [\n    { key: \"Mod-Shift-m\", run: openLintPanel, preventDefault: true },\n    { key: \"F8\", run: nextDiagnostic }\n];\nconst lintPlugin = /*@__PURE__*/ViewPlugin.fromClass(class {\n    constructor(view) {\n        this.view = view;\n        this.timeout = -1;\n        this.set = true;\n        let { delay } = view.state.facet(lintConfig);\n        this.lintTime = Date.now() + delay;\n        this.run = this.run.bind(this);\n        this.timeout = setTimeout(this.run, delay);\n    }\n    run() {\n        clearTimeout(this.timeout);\n        let now = Date.now();\n        if (now < this.lintTime - 10) {\n            this.timeout = setTimeout(this.run, this.lintTime - now);\n        }\n        else {\n            this.set = false;\n            let { state } = this.view, { sources } = state.facet(lintConfig);\n            if (sources.length)\n                batchResults(sources.map(s => Promise.resolve(s(this.view))), annotations => {\n                    if (this.view.state.doc == state.doc)\n                        this.view.dispatch(setDiagnostics(this.view.state, annotations.reduce((a, b) => a.concat(b))));\n                }, error => { logException(this.view.state, error); });\n        }\n    }\n    update(update) {\n        let config = update.state.facet(lintConfig);\n        if (update.docChanged || config != update.startState.facet(lintConfig) ||\n            config.needsRefresh && config.needsRefresh(update)) {\n            this.lintTime = Date.now() + config.delay;\n            if (!this.set) {\n                this.set = true;\n                this.timeout = setTimeout(this.run, config.delay);\n            }\n        }\n    }\n    force() {\n        if (this.set) {\n            this.lintTime = Date.now();\n            this.run();\n        }\n    }\n    destroy() {\n        clearTimeout(this.timeout);\n    }\n});\nfunction batchResults(promises, sink, error) {\n    let collected = [], timeout = -1;\n    for (let p of promises)\n        p.then(value => {\n            collected.push(value);\n            clearTimeout(timeout);\n            if (collected.length == promises.length)\n                sink(collected);\n            else\n                timeout = setTimeout(() => sink(collected), 200);\n        }, error);\n}\nconst lintConfig = /*@__PURE__*/Facet.define({\n    combine(input) {\n        return Object.assign({ sources: input.map(i => i.source).filter(x => x != null) }, combineConfig(input.map(i => i.config), {\n            delay: 750,\n            markerFilter: null,\n            tooltipFilter: null,\n            needsRefresh: null,\n            hideOn: () => null,\n        }, {\n            needsRefresh: (a, b) => !a ? b : !b ? a : u => a(u) || b(u)\n        }));\n    }\n});\n/**\nGiven a diagnostic source, this function returns an extension that\nenables linting with that source. It will be called whenever the\neditor is idle (after its content changed). If `null` is given as\nsource, this only configures the lint extension.\n*/\nfunction linter(source, config = {}) {\n    return [\n        lintConfig.of({ source, config }),\n        lintPlugin,\n        lintExtensions\n    ];\n}\n/**\nForces any linters [configured](https://codemirror.net/6/docs/ref/#lint.linter) to run when the\neditor is idle to run right away.\n*/\nfunction forceLinting(view) {\n    let plugin = view.plugin(lintPlugin);\n    if (plugin)\n        plugin.force();\n}\nfunction assignKeys(actions) {\n    let assigned = [];\n    if (actions)\n        actions: for (let { name } of actions) {\n            for (let i = 0; i < name.length; i++) {\n                let ch = name[i];\n                if (/[a-zA-Z]/.test(ch) && !assigned.some(c => c.toLowerCase() == ch.toLowerCase())) {\n                    assigned.push(ch);\n                    continue actions;\n                }\n            }\n            assigned.push(\"\");\n        }\n    return assigned;\n}\nfunction renderDiagnostic(view, diagnostic, inPanel) {\n    var _a;\n    let keys = inPanel ? assignKeys(diagnostic.actions) : [];\n    return elt(\"li\", { class: \"cm-diagnostic cm-diagnostic-\" + diagnostic.severity }, elt(\"span\", { class: \"cm-diagnosticText\" }, diagnostic.renderMessage ? diagnostic.renderMessage(view) : diagnostic.message), (_a = diagnostic.actions) === null || _a === void 0 ? void 0 : _a.map((action, i) => {\n        let fired = false, click = (e) => {\n            e.preventDefault();\n            if (fired)\n                return;\n            fired = true;\n            let found = findDiagnostic(view.state.field(lintState).diagnostics, diagnostic);\n            if (found)\n                action.apply(view, found.from, found.to);\n        };\n        let { name } = action, keyIndex = keys[i] ? name.indexOf(keys[i]) : -1;\n        let nameElt = keyIndex < 0 ? name : [name.slice(0, keyIndex),\n            elt(\"u\", name.slice(keyIndex, keyIndex + 1)),\n            name.slice(keyIndex + 1)];\n        return elt(\"button\", {\n            type: \"button\",\n            class: \"cm-diagnosticAction\",\n            onclick: click,\n            onmousedown: click,\n            \"aria-label\": ` Action: ${name}${keyIndex < 0 ? \"\" : ` (access key \"${keys[i]})\"`}.`\n        }, nameElt);\n    }), diagnostic.source && elt(\"div\", { class: \"cm-diagnosticSource\" }, diagnostic.source));\n}\nclass DiagnosticWidget extends WidgetType {\n    constructor(sev) {\n        super();\n        this.sev = sev;\n    }\n    eq(other) { return other.sev == this.sev; }\n    toDOM() {\n        return elt(\"span\", { class: \"cm-lintPoint cm-lintPoint-\" + this.sev });\n    }\n}\nclass PanelItem {\n    constructor(view, diagnostic) {\n        this.diagnostic = diagnostic;\n        this.id = \"item_\" + Math.floor(Math.random() * 0xffffffff).toString(16);\n        this.dom = renderDiagnostic(view, diagnostic, true);\n        this.dom.id = this.id;\n        this.dom.setAttribute(\"role\", \"option\");\n    }\n}\nclass LintPanel {\n    constructor(view) {\n        this.view = view;\n        this.items = [];\n        let onkeydown = (event) => {\n            if (event.keyCode == 27) { // Escape\n                closeLintPanel(this.view);\n                this.view.focus();\n            }\n            else if (event.keyCode == 38 || event.keyCode == 33) { // ArrowUp, PageUp\n                this.moveSelection((this.selectedIndex - 1 + this.items.length) % this.items.length);\n            }\n            else if (event.keyCode == 40 || event.keyCode == 34) { // ArrowDown, PageDown\n                this.moveSelection((this.selectedIndex + 1) % this.items.length);\n            }\n            else if (event.keyCode == 36) { // Home\n                this.moveSelection(0);\n            }\n            else if (event.keyCode == 35) { // End\n                this.moveSelection(this.items.length - 1);\n            }\n            else if (event.keyCode == 13) { // Enter\n                this.view.focus();\n            }\n            else if (event.keyCode >= 65 && event.keyCode <= 90 && this.selectedIndex >= 0) { // A-Z\n                let { diagnostic } = this.items[this.selectedIndex], keys = assignKeys(diagnostic.actions);\n                for (let i = 0; i < keys.length; i++)\n                    if (keys[i].toUpperCase().charCodeAt(0) == event.keyCode) {\n                        let found = findDiagnostic(this.view.state.field(lintState).diagnostics, diagnostic);\n                        if (found)\n                            diagnostic.actions[i].apply(view, found.from, found.to);\n                    }\n            }\n            else {\n                return;\n            }\n            event.preventDefault();\n        };\n        let onclick = (event) => {\n            for (let i = 0; i < this.items.length; i++) {\n                if (this.items[i].dom.contains(event.target))\n                    this.moveSelection(i);\n            }\n        };\n        this.list = elt(\"ul\", {\n            tabIndex: 0,\n            role: \"listbox\",\n            \"aria-label\": this.view.state.phrase(\"Diagnostics\"),\n            onkeydown,\n            onclick\n        });\n        this.dom = elt(\"div\", { class: \"cm-panel-lint\" }, this.list, elt(\"button\", {\n            type: \"button\",\n            name: \"close\",\n            \"aria-label\": this.view.state.phrase(\"close\"),\n            onclick: () => closeLintPanel(this.view)\n        }, \"×\"));\n        this.update();\n    }\n    get selectedIndex() {\n        let selected = this.view.state.field(lintState).selected;\n        if (!selected)\n            return -1;\n        for (let i = 0; i < this.items.length; i++)\n            if (this.items[i].diagnostic == selected.diagnostic)\n                return i;\n        return -1;\n    }\n    update() {\n        let { diagnostics, selected } = this.view.state.field(lintState);\n        let i = 0, needsSync = false, newSelectedItem = null;\n        let seen = new Set();\n        diagnostics.between(0, this.view.state.doc.length, (_start, _end, { spec }) => {\n            for (let diagnostic of spec.diagnostics) {\n                if (seen.has(diagnostic))\n                    continue;\n                seen.add(diagnostic);\n                let found = -1, item;\n                for (let j = i; j < this.items.length; j++)\n                    if (this.items[j].diagnostic == diagnostic) {\n                        found = j;\n                        break;\n                    }\n                if (found < 0) {\n                    item = new PanelItem(this.view, diagnostic);\n                    this.items.splice(i, 0, item);\n                    needsSync = true;\n                }\n                else {\n                    item = this.items[found];\n                    if (found > i) {\n                        this.items.splice(i, found - i);\n                        needsSync = true;\n                    }\n                }\n                if (selected && item.diagnostic == selected.diagnostic) {\n                    if (!item.dom.hasAttribute(\"aria-selected\")) {\n                        item.dom.setAttribute(\"aria-selected\", \"true\");\n                        newSelectedItem = item;\n                    }\n                }\n                else if (item.dom.hasAttribute(\"aria-selected\")) {\n                    item.dom.removeAttribute(\"aria-selected\");\n                }\n                i++;\n            }\n        });\n        while (i < this.items.length && !(this.items.length == 1 && this.items[0].diagnostic.from < 0)) {\n            needsSync = true;\n            this.items.pop();\n        }\n        if (this.items.length == 0) {\n            this.items.push(new PanelItem(this.view, {\n                from: -1, to: -1,\n                severity: \"info\",\n                message: this.view.state.phrase(\"No diagnostics\")\n            }));\n            needsSync = true;\n        }\n        if (newSelectedItem) {\n            this.list.setAttribute(\"aria-activedescendant\", newSelectedItem.id);\n            this.view.requestMeasure({\n                key: this,\n                read: () => ({ sel: newSelectedItem.dom.getBoundingClientRect(), panel: this.list.getBoundingClientRect() }),\n                write: ({ sel, panel }) => {\n                    let scaleY = panel.height / this.list.offsetHeight;\n                    if (sel.top < panel.top)\n                        this.list.scrollTop -= (panel.top - sel.top) / scaleY;\n                    else if (sel.bottom > panel.bottom)\n                        this.list.scrollTop += (sel.bottom - panel.bottom) / scaleY;\n                }\n            });\n        }\n        else if (this.selectedIndex < 0) {\n            this.list.removeAttribute(\"aria-activedescendant\");\n        }\n        if (needsSync)\n            this.sync();\n    }\n    sync() {\n        let domPos = this.list.firstChild;\n        function rm() {\n            let prev = domPos;\n            domPos = prev.nextSibling;\n            prev.remove();\n        }\n        for (let item of this.items) {\n            if (item.dom.parentNode == this.list) {\n                while (domPos != item.dom)\n                    rm();\n                domPos = item.dom.nextSibling;\n            }\n            else {\n                this.list.insertBefore(item.dom, domPos);\n            }\n        }\n        while (domPos)\n            rm();\n    }\n    moveSelection(selectedIndex) {\n        if (this.selectedIndex < 0)\n            return;\n        let field = this.view.state.field(lintState);\n        let selection = findDiagnostic(field.diagnostics, this.items[selectedIndex].diagnostic);\n        if (!selection)\n            return;\n        this.view.dispatch({\n            selection: { anchor: selection.from, head: selection.to },\n            scrollIntoView: true,\n            effects: movePanelSelection.of(selection)\n        });\n    }\n    static open(view) { return new LintPanel(view); }\n}\nfunction svg(content, attrs = `viewBox=\"0 0 40 40\"`) {\n    return `url('data:image/svg+xml,<svg xmlns=\"http://www.w3.org/2000/svg\" ${attrs}>${encodeURIComponent(content)}</svg>')`;\n}\nfunction underline(color) {\n    return svg(`<path d=\"m0 2.5 l2 -1.5 l1 0 l2 1.5 l1 0\" stroke=\"${color}\" fill=\"none\" stroke-width=\".7\"/>`, `width=\"6\" height=\"3\"`);\n}\nconst baseTheme = /*@__PURE__*/EditorView.baseTheme({\n    \".cm-diagnostic\": {\n        padding: \"3px 6px 3px 8px\",\n        marginLeft: \"-1px\",\n        display: \"block\",\n        whiteSpace: \"pre-wrap\"\n    },\n    \".cm-diagnostic-error\": { borderLeft: \"5px solid #d11\" },\n    \".cm-diagnostic-warning\": { borderLeft: \"5px solid orange\" },\n    \".cm-diagnostic-info\": { borderLeft: \"5px solid #999\" },\n    \".cm-diagnostic-hint\": { borderLeft: \"5px solid #66d\" },\n    \".cm-diagnosticAction\": {\n        font: \"inherit\",\n        border: \"none\",\n        padding: \"2px 4px\",\n        backgroundColor: \"#444\",\n        color: \"white\",\n        borderRadius: \"3px\",\n        marginLeft: \"8px\",\n        cursor: \"pointer\"\n    },\n    \".cm-diagnosticSource\": {\n        fontSize: \"70%\",\n        opacity: .7\n    },\n    \".cm-lintRange\": {\n        backgroundPosition: \"left bottom\",\n        backgroundRepeat: \"repeat-x\",\n        paddingBottom: \"0.7px\",\n    },\n    \".cm-lintRange-error\": { backgroundImage: /*@__PURE__*/underline(\"#d11\") },\n    \".cm-lintRange-warning\": { backgroundImage: /*@__PURE__*/underline(\"orange\") },\n    \".cm-lintRange-info\": { backgroundImage: /*@__PURE__*/underline(\"#999\") },\n    \".cm-lintRange-hint\": { backgroundImage: /*@__PURE__*/underline(\"#66d\") },\n    \".cm-lintRange-active\": { backgroundColor: \"#ffdd9980\" },\n    \".cm-tooltip-lint\": {\n        padding: 0,\n        margin: 0\n    },\n    \".cm-lintPoint\": {\n        position: \"relative\",\n        \"&:after\": {\n            content: '\"\"',\n            position: \"absolute\",\n            bottom: 0,\n            left: \"-2px\",\n            borderLeft: \"3px solid transparent\",\n            borderRight: \"3px solid transparent\",\n            borderBottom: \"4px solid #d11\"\n        }\n    },\n    \".cm-lintPoint-warning\": {\n        \"&:after\": { borderBottomColor: \"orange\" }\n    },\n    \".cm-lintPoint-info\": {\n        \"&:after\": { borderBottomColor: \"#999\" }\n    },\n    \".cm-lintPoint-hint\": {\n        \"&:after\": { borderBottomColor: \"#66d\" }\n    },\n    \".cm-panel.cm-panel-lint\": {\n        position: \"relative\",\n        \"& ul\": {\n            maxHeight: \"100px\",\n            overflowY: \"auto\",\n            \"& [aria-selected]\": {\n                backgroundColor: \"#ddd\",\n                \"& u\": { textDecoration: \"underline\" }\n            },\n            \"&:focus [aria-selected]\": {\n                background_fallback: \"#bdf\",\n                backgroundColor: \"Highlight\",\n                color_fallback: \"white\",\n                color: \"HighlightText\"\n            },\n            \"& u\": { textDecoration: \"none\" },\n            padding: 0,\n            margin: 0\n        },\n        \"& [name=close]\": {\n            position: \"absolute\",\n            top: \"0\",\n            right: \"2px\",\n            background: \"inherit\",\n            border: \"none\",\n            font: \"inherit\",\n            padding: 0,\n            margin: 0\n        }\n    }\n});\nfunction severityWeight(sev) {\n    return sev == \"error\" ? 4 : sev == \"warning\" ? 3 : sev == \"info\" ? 2 : 1;\n}\nfunction maxSeverity(diagnostics) {\n    let sev = \"hint\", weight = 1;\n    for (let d of diagnostics) {\n        let w = severityWeight(d.severity);\n        if (w > weight) {\n            weight = w;\n            sev = d.severity;\n        }\n    }\n    return sev;\n}\nclass LintGutterMarker extends GutterMarker {\n    constructor(diagnostics) {\n        super();\n        this.diagnostics = diagnostics;\n        this.severity = maxSeverity(diagnostics);\n    }\n    toDOM(view) {\n        let elt = document.createElement(\"div\");\n        elt.className = \"cm-lint-marker cm-lint-marker-\" + this.severity;\n        let diagnostics = this.diagnostics;\n        let diagnosticsFilter = view.state.facet(lintGutterConfig).tooltipFilter;\n        if (diagnosticsFilter)\n            diagnostics = diagnosticsFilter(diagnostics, view.state);\n        if (diagnostics.length)\n            elt.onmouseover = () => gutterMarkerMouseOver(view, elt, diagnostics);\n        return elt;\n    }\n}\nfunction trackHoverOn(view, marker) {\n    let mousemove = (event) => {\n        let rect = marker.getBoundingClientRect();\n        if (event.clientX > rect.left - 10 /* Hover.Margin */ && event.clientX < rect.right + 10 /* Hover.Margin */ &&\n            event.clientY > rect.top - 10 /* Hover.Margin */ && event.clientY < rect.bottom + 10 /* Hover.Margin */)\n            return;\n        for (let target = event.target; target; target = target.parentNode) {\n            if (target.nodeType == 1 && target.classList.contains(\"cm-tooltip-lint\"))\n                return;\n        }\n        window.removeEventListener(\"mousemove\", mousemove);\n        if (view.state.field(lintGutterTooltip))\n            view.dispatch({ effects: setLintGutterTooltip.of(null) });\n    };\n    window.addEventListener(\"mousemove\", mousemove);\n}\nfunction gutterMarkerMouseOver(view, marker, diagnostics) {\n    function hovered() {\n        let line = view.elementAtHeight(marker.getBoundingClientRect().top + 5 - view.documentTop);\n        const linePos = view.coordsAtPos(line.from);\n        if (linePos) {\n            view.dispatch({ effects: setLintGutterTooltip.of({\n                    pos: line.from,\n                    above: false,\n                    clip: false,\n                    create() {\n                        return {\n                            dom: diagnosticsTooltip(view, diagnostics),\n                            getCoords: () => marker.getBoundingClientRect()\n                        };\n                    }\n                }) });\n        }\n        marker.onmouseout = marker.onmousemove = null;\n        trackHoverOn(view, marker);\n    }\n    let { hoverTime } = view.state.facet(lintGutterConfig);\n    let hoverTimeout = setTimeout(hovered, hoverTime);\n    marker.onmouseout = () => {\n        clearTimeout(hoverTimeout);\n        marker.onmouseout = marker.onmousemove = null;\n    };\n    marker.onmousemove = () => {\n        clearTimeout(hoverTimeout);\n        hoverTimeout = setTimeout(hovered, hoverTime);\n    };\n}\nfunction markersForDiagnostics(doc, diagnostics) {\n    let byLine = Object.create(null);\n    for (let diagnostic of diagnostics) {\n        let line = doc.lineAt(diagnostic.from);\n        (byLine[line.from] || (byLine[line.from] = [])).push(diagnostic);\n    }\n    let markers = [];\n    for (let line in byLine) {\n        markers.push(new LintGutterMarker(byLine[line]).range(+line));\n    }\n    return RangeSet.of(markers, true);\n}\nconst lintGutterExtension = /*@__PURE__*/gutter({\n    class: \"cm-gutter-lint\",\n    markers: view => view.state.field(lintGutterMarkers),\n    widgetMarker: (view, widget, block) => {\n        let diagnostics = [];\n        view.state.field(lintGutterMarkers).between(block.from, block.to, (from, to, value) => {\n            if (from > block.from && from < block.to)\n                diagnostics.push(...value.diagnostics);\n        });\n        return diagnostics.length ? new LintGutterMarker(diagnostics) : null;\n    }\n});\nconst lintGutterMarkers = /*@__PURE__*/StateField.define({\n    create() {\n        return RangeSet.empty;\n    },\n    update(markers, tr) {\n        markers = markers.map(tr.changes);\n        let diagnosticFilter = tr.state.facet(lintGutterConfig).markerFilter;\n        for (let effect of tr.effects) {\n            if (effect.is(setDiagnosticsEffect)) {\n                let diagnostics = effect.value;\n                if (diagnosticFilter)\n                    diagnostics = diagnosticFilter(diagnostics || [], tr.state);\n                markers = markersForDiagnostics(tr.state.doc, diagnostics.slice(0));\n            }\n        }\n        return markers;\n    }\n});\nconst setLintGutterTooltip = /*@__PURE__*/StateEffect.define();\nconst lintGutterTooltip = /*@__PURE__*/StateField.define({\n    create() { return null; },\n    update(tooltip, tr) {\n        if (tooltip && tr.docChanged)\n            tooltip = hideTooltip(tr, tooltip) ? null : Object.assign(Object.assign({}, tooltip), { pos: tr.changes.mapPos(tooltip.pos) });\n        return tr.effects.reduce((t, e) => e.is(setLintGutterTooltip) ? e.value : t, tooltip);\n    },\n    provide: field => showTooltip.from(field)\n});\nconst lintGutterTheme = /*@__PURE__*/EditorView.baseTheme({\n    \".cm-gutter-lint\": {\n        width: \"1.4em\",\n        \"& .cm-gutterElement\": {\n            padding: \".2em\"\n        }\n    },\n    \".cm-lint-marker\": {\n        width: \"1em\",\n        height: \"1em\"\n    },\n    \".cm-lint-marker-info\": {\n        content: /*@__PURE__*/svg(`<path fill=\"#aaf\" stroke=\"#77e\" stroke-width=\"6\" stroke-linejoin=\"round\" d=\"M5 5L35 5L35 35L5 35Z\"/>`)\n    },\n    \".cm-lint-marker-warning\": {\n        content: /*@__PURE__*/svg(`<path fill=\"#fe8\" stroke=\"#fd7\" stroke-width=\"6\" stroke-linejoin=\"round\" d=\"M20 6L37 35L3 35Z\"/>`),\n    },\n    \".cm-lint-marker-error\": {\n        content: /*@__PURE__*/svg(`<circle cx=\"20\" cy=\"20\" r=\"15\" fill=\"#f87\" stroke=\"#f43\" stroke-width=\"6\"/>`)\n    },\n});\nconst lintExtensions = [\n    lintState,\n    /*@__PURE__*/EditorView.decorations.compute([lintState], state => {\n        let { selected, panel } = state.field(lintState);\n        return !selected || !panel || selected.from == selected.to ? Decoration.none : Decoration.set([\n            activeMark.range(selected.from, selected.to)\n        ]);\n    }),\n    /*@__PURE__*/hoverTooltip(lintTooltip, { hideOn: hideTooltip }),\n    baseTheme\n];\nconst lintGutterConfig = /*@__PURE__*/Facet.define({\n    combine(configs) {\n        return combineConfig(configs, {\n            hoverTime: 300 /* Hover.Time */,\n            markerFilter: null,\n            tooltipFilter: null\n        });\n    }\n});\n/**\nReturns an extension that installs a gutter showing markers for\neach line that has diagnostics, which can be hovered over to see\nthe diagnostics.\n*/\nfunction lintGutter(config = {}) {\n    return [lintGutterConfig.of(config), lintGutterMarkers, lintGutterExtension, lintGutterTheme, lintGutterTooltip];\n}\n/**\nIterate over the marked diagnostics for the given editor state,\ncalling `f` for each of them. Note that, if the document changed\nsince the diagnostics were created, the `Diagnostic` object will\nhold the original outdated position, whereas the `to` and `from`\narguments hold the diagnostic's current position.\n*/\nfunction forEachDiagnostic(state, f) {\n    let lState = state.field(lintState, false);\n    if (lState && lState.diagnostics.size) {\n        let pending = [], pendingStart = [], lastEnd = -1;\n        for (let iter = RangeSet.iter([lState.diagnostics]);; iter.next()) {\n            for (let i = 0; i < pending.length; i++)\n                if (!iter.value || iter.value.spec.diagnostics.indexOf(pending[i]) < 0) {\n                    f(pending[i], pendingStart[i], lastEnd);\n                    pending.splice(i, 1);\n                    pendingStart.splice(i--, 1);\n                }\n            if (!iter.value)\n                break;\n            for (let d of iter.value.spec.diagnostics)\n                if (pending.indexOf(d) < 0) {\n                    pending.push(d);\n                    pendingStart.push(iter.from);\n                }\n            lastEnd = iter.to;\n        }\n    }\n}\n\nexport { closeLintPanel, diagnosticCount, forEachDiagnostic, forceLinting, lintGutter, lintKeymap, linter, nextDiagnostic, openLintPanel, previousDiagnostic, setDiagnostics, setDiagnosticsEffect };\n","import { showPanel, EditorView, getPanel, Decoration, ViewPlugin, runScopeHandlers } from '@codemirror/view';\nimport { codePointAt, fromCodePoint, codePointSize, StateEffect, StateField, EditorSelection, Facet, combineConfig, CharCategory, RangeSetBuilder, Prec, EditorState, findClusterBreak } from '@codemirror/state';\nimport elt from 'crelt';\n\nconst basicNormalize = typeof String.prototype.normalize == \"function\"\n    ? x => x.normalize(\"NFKD\") : x => x;\n/**\nA search cursor provides an iterator over text matches in a\ndocument.\n*/\nclass SearchCursor {\n    /**\n    Create a text cursor. The query is the search string, `from` to\n    `to` provides the region to search.\n    \n    When `normalize` is given, it will be called, on both the query\n    string and the content it is matched against, before comparing.\n    You can, for example, create a case-insensitive search by\n    passing `s => s.toLowerCase()`.\n    \n    Text is always normalized with\n    [`.normalize(\"NFKD\")`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/normalize)\n    (when supported).\n    */\n    constructor(text, query, from = 0, to = text.length, normalize, test) {\n        this.test = test;\n        /**\n        The current match (only holds a meaningful value after\n        [`next`](https://codemirror.net/6/docs/ref/#search.SearchCursor.next) has been called and when\n        `done` is false).\n        */\n        this.value = { from: 0, to: 0 };\n        /**\n        Whether the end of the iterated region has been reached.\n        */\n        this.done = false;\n        this.matches = [];\n        this.buffer = \"\";\n        this.bufferPos = 0;\n        this.iter = text.iterRange(from, to);\n        this.bufferStart = from;\n        this.normalize = normalize ? x => normalize(basicNormalize(x)) : basicNormalize;\n        this.query = this.normalize(query);\n    }\n    peek() {\n        if (this.bufferPos == this.buffer.length) {\n            this.bufferStart += this.buffer.length;\n            this.iter.next();\n            if (this.iter.done)\n                return -1;\n            this.bufferPos = 0;\n            this.buffer = this.iter.value;\n        }\n        return codePointAt(this.buffer, this.bufferPos);\n    }\n    /**\n    Look for the next match. Updates the iterator's\n    [`value`](https://codemirror.net/6/docs/ref/#search.SearchCursor.value) and\n    [`done`](https://codemirror.net/6/docs/ref/#search.SearchCursor.done) properties. Should be called\n    at least once before using the cursor.\n    */\n    next() {\n        while (this.matches.length)\n            this.matches.pop();\n        return this.nextOverlapping();\n    }\n    /**\n    The `next` method will ignore matches that partially overlap a\n    previous match. This method behaves like `next`, but includes\n    such matches.\n    */\n    nextOverlapping() {\n        for (;;) {\n            let next = this.peek();\n            if (next < 0) {\n                this.done = true;\n                return this;\n            }\n            let str = fromCodePoint(next), start = this.bufferStart + this.bufferPos;\n            this.bufferPos += codePointSize(next);\n            let norm = this.normalize(str);\n            for (let i = 0, pos = start;; i++) {\n                let code = norm.charCodeAt(i);\n                let match = this.match(code, pos);\n                if (match) {\n                    this.value = match;\n                    return this;\n                }\n                if (i == norm.length - 1)\n                    break;\n                if (pos == start && i < str.length && str.charCodeAt(i) == code)\n                    pos++;\n            }\n        }\n    }\n    match(code, pos) {\n        let match = null;\n        for (let i = 0; i < this.matches.length; i += 2) {\n            let index = this.matches[i], keep = false;\n            if (this.query.charCodeAt(index) == code) {\n                if (index == this.query.length - 1) {\n                    match = { from: this.matches[i + 1], to: pos + 1 };\n                }\n                else {\n                    this.matches[i]++;\n                    keep = true;\n                }\n            }\n            if (!keep) {\n                this.matches.splice(i, 2);\n                i -= 2;\n            }\n        }\n        if (this.query.charCodeAt(0) == code) {\n            if (this.query.length == 1)\n                match = { from: pos, to: pos + 1 };\n            else\n                this.matches.push(1, pos);\n        }\n        if (match && this.test && !this.test(match.from, match.to, this.buffer, this.bufferPos))\n            match = null;\n        return match;\n    }\n}\nif (typeof Symbol != \"undefined\")\n    SearchCursor.prototype[Symbol.iterator] = function () { return this; };\n\nconst empty = { from: -1, to: -1, match: /*@__PURE__*//.*/.exec(\"\") };\nconst baseFlags = \"gm\" + (/x/.unicode == null ? \"\" : \"u\");\n/**\nThis class is similar to [`SearchCursor`](https://codemirror.net/6/docs/ref/#search.SearchCursor)\nbut searches for a regular expression pattern instead of a plain\nstring.\n*/\nclass RegExpCursor {\n    /**\n    Create a cursor that will search the given range in the given\n    document. `query` should be the raw pattern (as you'd pass it to\n    `new RegExp`).\n    */\n    constructor(text, query, options, from = 0, to = text.length) {\n        this.text = text;\n        this.to = to;\n        this.curLine = \"\";\n        /**\n        Set to `true` when the cursor has reached the end of the search\n        range.\n        */\n        this.done = false;\n        /**\n        Will contain an object with the extent of the match and the\n        match object when [`next`](https://codemirror.net/6/docs/ref/#search.RegExpCursor.next)\n        sucessfully finds a match.\n        */\n        this.value = empty;\n        if (/\\\\[sWDnr]|\\n|\\r|\\[\\^/.test(query))\n            return new MultilineRegExpCursor(text, query, options, from, to);\n        this.re = new RegExp(query, baseFlags + ((options === null || options === void 0 ? void 0 : options.ignoreCase) ? \"i\" : \"\"));\n        this.test = options === null || options === void 0 ? void 0 : options.test;\n        this.iter = text.iter();\n        let startLine = text.lineAt(from);\n        this.curLineStart = startLine.from;\n        this.matchPos = toCharEnd(text, from);\n        this.getLine(this.curLineStart);\n    }\n    getLine(skip) {\n        this.iter.next(skip);\n        if (this.iter.lineBreak) {\n            this.curLine = \"\";\n        }\n        else {\n            this.curLine = this.iter.value;\n            if (this.curLineStart + this.curLine.length > this.to)\n                this.curLine = this.curLine.slice(0, this.to - this.curLineStart);\n            this.iter.next();\n        }\n    }\n    nextLine() {\n        this.curLineStart = this.curLineStart + this.curLine.length + 1;\n        if (this.curLineStart > this.to)\n            this.curLine = \"\";\n        else\n            this.getLine(0);\n    }\n    /**\n    Move to the next match, if there is one.\n    */\n    next() {\n        for (let off = this.matchPos - this.curLineStart;;) {\n            this.re.lastIndex = off;\n            let match = this.matchPos <= this.to && this.re.exec(this.curLine);\n            if (match) {\n                let from = this.curLineStart + match.index, to = from + match[0].length;\n                this.matchPos = toCharEnd(this.text, to + (from == to ? 1 : 0));\n                if (from == this.curLineStart + this.curLine.length)\n                    this.nextLine();\n                if ((from < to || from > this.value.to) && (!this.test || this.test(from, to, match))) {\n                    this.value = { from, to, match };\n                    return this;\n                }\n                off = this.matchPos - this.curLineStart;\n            }\n            else if (this.curLineStart + this.curLine.length < this.to) {\n                this.nextLine();\n                off = 0;\n            }\n            else {\n                this.done = true;\n                return this;\n            }\n        }\n    }\n}\nconst flattened = /*@__PURE__*/new WeakMap();\n// Reusable (partially) flattened document strings\nclass FlattenedDoc {\n    constructor(from, text) {\n        this.from = from;\n        this.text = text;\n    }\n    get to() { return this.from + this.text.length; }\n    static get(doc, from, to) {\n        let cached = flattened.get(doc);\n        if (!cached || cached.from >= to || cached.to <= from) {\n            let flat = new FlattenedDoc(from, doc.sliceString(from, to));\n            flattened.set(doc, flat);\n            return flat;\n        }\n        if (cached.from == from && cached.to == to)\n            return cached;\n        let { text, from: cachedFrom } = cached;\n        if (cachedFrom > from) {\n            text = doc.sliceString(from, cachedFrom) + text;\n            cachedFrom = from;\n        }\n        if (cached.to < to)\n            text += doc.sliceString(cached.to, to);\n        flattened.set(doc, new FlattenedDoc(cachedFrom, text));\n        return new FlattenedDoc(from, text.slice(from - cachedFrom, to - cachedFrom));\n    }\n}\nclass MultilineRegExpCursor {\n    constructor(text, query, options, from, to) {\n        this.text = text;\n        this.to = to;\n        this.done = false;\n        this.value = empty;\n        this.matchPos = toCharEnd(text, from);\n        this.re = new RegExp(query, baseFlags + ((options === null || options === void 0 ? void 0 : options.ignoreCase) ? \"i\" : \"\"));\n        this.test = options === null || options === void 0 ? void 0 : options.test;\n        this.flat = FlattenedDoc.get(text, from, this.chunkEnd(from + 5000 /* Base */));\n    }\n    chunkEnd(pos) {\n        return pos >= this.to ? this.to : this.text.lineAt(pos).to;\n    }\n    next() {\n        for (;;) {\n            let off = this.re.lastIndex = this.matchPos - this.flat.from;\n            let match = this.re.exec(this.flat.text);\n            // Skip empty matches directly after the last match\n            if (match && !match[0] && match.index == off) {\n                this.re.lastIndex = off + 1;\n                match = this.re.exec(this.flat.text);\n            }\n            if (match) {\n                let from = this.flat.from + match.index, to = from + match[0].length;\n                // If a match goes almost to the end of a noncomplete chunk, try\n                // again, since it'll likely be able to match more\n                if ((this.flat.to >= this.to || match.index + match[0].length <= this.flat.text.length - 10) &&\n                    (!this.test || this.test(from, to, match))) {\n                    this.value = { from, to, match };\n                    this.matchPos = toCharEnd(this.text, to + (from == to ? 1 : 0));\n                    return this;\n                }\n            }\n            if (this.flat.to == this.to) {\n                this.done = true;\n                return this;\n            }\n            // Grow the flattened doc\n            this.flat = FlattenedDoc.get(this.text, this.flat.from, this.chunkEnd(this.flat.from + this.flat.text.length * 2));\n        }\n    }\n}\nif (typeof Symbol != \"undefined\") {\n    RegExpCursor.prototype[Symbol.iterator] = MultilineRegExpCursor.prototype[Symbol.iterator] =\n        function () { return this; };\n}\nfunction validRegExp(source) {\n    try {\n        new RegExp(source, baseFlags);\n        return true;\n    }\n    catch (_a) {\n        return false;\n    }\n}\nfunction toCharEnd(text, pos) {\n    if (pos >= text.length)\n        return pos;\n    let line = text.lineAt(pos), next;\n    while (pos < line.to && (next = line.text.charCodeAt(pos - line.from)) >= 0xDC00 && next < 0xE000)\n        pos++;\n    return pos;\n}\n\nfunction createLineDialog(view) {\n    let input = elt(\"input\", { class: \"cm-textfield\", name: \"line\" });\n    let dom = elt(\"form\", {\n        class: \"cm-gotoLine\",\n        onkeydown: (event) => {\n            if (event.keyCode == 27) { // Escape\n                event.preventDefault();\n                view.dispatch({ effects: dialogEffect.of(false) });\n                view.focus();\n            }\n            else if (event.keyCode == 13) { // Enter\n                event.preventDefault();\n                go();\n            }\n        },\n        onsubmit: (event) => {\n            event.preventDefault();\n            go();\n        }\n    }, elt(\"label\", view.state.phrase(\"Go to line\"), \": \", input), \" \", elt(\"button\", { class: \"cm-button\", type: \"submit\" }, view.state.phrase(\"go\")));\n    function go() {\n        let match = /^([+-])?(\\d+)?(:\\d+)?(%)?$/.exec(input.value);\n        if (!match)\n            return;\n        let { state } = view, startLine = state.doc.lineAt(state.selection.main.head);\n        let [, sign, ln, cl, percent] = match;\n        let col = cl ? +cl.slice(1) : 0;\n        let line = ln ? +ln : startLine.number;\n        if (ln && percent) {\n            let pc = line / 100;\n            if (sign)\n                pc = pc * (sign == \"-\" ? -1 : 1) + (startLine.number / state.doc.lines);\n            line = Math.round(state.doc.lines * pc);\n        }\n        else if (ln && sign) {\n            line = line * (sign == \"-\" ? -1 : 1) + startLine.number;\n        }\n        let docLine = state.doc.line(Math.max(1, Math.min(state.doc.lines, line)));\n        view.dispatch({\n            effects: dialogEffect.of(false),\n            selection: EditorSelection.cursor(docLine.from + Math.max(0, Math.min(col, docLine.length))),\n            scrollIntoView: true\n        });\n        view.focus();\n    }\n    return { dom };\n}\nconst dialogEffect = /*@__PURE__*/StateEffect.define();\nconst dialogField = /*@__PURE__*/StateField.define({\n    create() { return true; },\n    update(value, tr) {\n        for (let e of tr.effects)\n            if (e.is(dialogEffect))\n                value = e.value;\n        return value;\n    },\n    provide: f => showPanel.from(f, val => val ? createLineDialog : null)\n});\n/**\nCommand that shows a dialog asking the user for a line number, and\nwhen a valid position is provided, moves the cursor to that line.\n\nSupports line numbers, relative line offsets prefixed with `+` or\n`-`, document percentages suffixed with `%`, and an optional\ncolumn position by adding `:` and a second number after the line\nnumber.\n*/\nconst gotoLine = view => {\n    let panel = getPanel(view, createLineDialog);\n    if (!panel) {\n        let effects = [dialogEffect.of(true)];\n        if (view.state.field(dialogField, false) == null)\n            effects.push(StateEffect.appendConfig.of([dialogField, baseTheme$1]));\n        view.dispatch({ effects });\n        panel = getPanel(view, createLineDialog);\n    }\n    if (panel)\n        panel.dom.querySelector(\"input\").focus();\n    return true;\n};\nconst baseTheme$1 = /*@__PURE__*/EditorView.baseTheme({\n    \".cm-panel.cm-gotoLine\": {\n        padding: \"2px 6px 4px\",\n        \"& label\": { fontSize: \"80%\" }\n    }\n});\n\nconst defaultHighlightOptions = {\n    highlightWordAroundCursor: false,\n    minSelectionLength: 1,\n    maxMatches: 100,\n    wholeWords: false\n};\nconst highlightConfig = /*@__PURE__*/Facet.define({\n    combine(options) {\n        return combineConfig(options, defaultHighlightOptions, {\n            highlightWordAroundCursor: (a, b) => a || b,\n            minSelectionLength: Math.min,\n            maxMatches: Math.min\n        });\n    }\n});\n/**\nThis extension highlights text that matches the selection. It uses\nthe `\"cm-selectionMatch\"` class for the highlighting. When\n`highlightWordAroundCursor` is enabled, the word at the cursor\nitself will be highlighted with `\"cm-selectionMatch-main\"`.\n*/\nfunction highlightSelectionMatches(options) {\n    let ext = [defaultTheme, matchHighlighter];\n    if (options)\n        ext.push(highlightConfig.of(options));\n    return ext;\n}\nconst matchDeco = /*@__PURE__*/Decoration.mark({ class: \"cm-selectionMatch\" });\nconst mainMatchDeco = /*@__PURE__*/Decoration.mark({ class: \"cm-selectionMatch cm-selectionMatch-main\" });\n// Whether the characters directly outside the given positions are non-word characters\nfunction insideWordBoundaries(check, state, from, to) {\n    return (from == 0 || check(state.sliceDoc(from - 1, from)) != CharCategory.Word) &&\n        (to == state.doc.length || check(state.sliceDoc(to, to + 1)) != CharCategory.Word);\n}\n// Whether the characters directly at the given positions are word characters\nfunction insideWord(check, state, from, to) {\n    return check(state.sliceDoc(from, from + 1)) == CharCategory.Word\n        && check(state.sliceDoc(to - 1, to)) == CharCategory.Word;\n}\nconst matchHighlighter = /*@__PURE__*/ViewPlugin.fromClass(class {\n    constructor(view) {\n        this.decorations = this.getDeco(view);\n    }\n    update(update) {\n        if (update.selectionSet || update.docChanged || update.viewportChanged)\n            this.decorations = this.getDeco(update.view);\n    }\n    getDeco(view) {\n        let conf = view.state.facet(highlightConfig);\n        let { state } = view, sel = state.selection;\n        if (sel.ranges.length > 1)\n            return Decoration.none;\n        let range = sel.main, query, check = null;\n        if (range.empty) {\n            if (!conf.highlightWordAroundCursor)\n                return Decoration.none;\n            let word = state.wordAt(range.head);\n            if (!word)\n                return Decoration.none;\n            check = state.charCategorizer(range.head);\n            query = state.sliceDoc(word.from, word.to);\n        }\n        else {\n            let len = range.to - range.from;\n            if (len < conf.minSelectionLength || len > 200)\n                return Decoration.none;\n            if (conf.wholeWords) {\n                query = state.sliceDoc(range.from, range.to); // TODO: allow and include leading/trailing space?\n                check = state.charCategorizer(range.head);\n                if (!(insideWordBoundaries(check, state, range.from, range.to)\n                    && insideWord(check, state, range.from, range.to)))\n                    return Decoration.none;\n            }\n            else {\n                query = state.sliceDoc(range.from, range.to).trim();\n                if (!query)\n                    return Decoration.none;\n            }\n        }\n        let deco = [];\n        for (let part of view.visibleRanges) {\n            let cursor = new SearchCursor(state.doc, query, part.from, part.to);\n            while (!cursor.next().done) {\n                let { from, to } = cursor.value;\n                if (!check || insideWordBoundaries(check, state, from, to)) {\n                    if (range.empty && from <= range.from && to >= range.to)\n                        deco.push(mainMatchDeco.range(from, to));\n                    else if (from >= range.to || to <= range.from)\n                        deco.push(matchDeco.range(from, to));\n                    if (deco.length > conf.maxMatches)\n                        return Decoration.none;\n                }\n            }\n        }\n        return Decoration.set(deco);\n    }\n}, {\n    decorations: v => v.decorations\n});\nconst defaultTheme = /*@__PURE__*/EditorView.baseTheme({\n    \".cm-selectionMatch\": { backgroundColor: \"#99ff7780\" },\n    \".cm-searchMatch .cm-selectionMatch\": { backgroundColor: \"transparent\" }\n});\n// Select the words around the cursors.\nconst selectWord = ({ state, dispatch }) => {\n    let { selection } = state;\n    let newSel = EditorSelection.create(selection.ranges.map(range => state.wordAt(range.head) || EditorSelection.cursor(range.head)), selection.mainIndex);\n    if (newSel.eq(selection))\n        return false;\n    dispatch(state.update({ selection: newSel }));\n    return true;\n};\n// Find next occurrence of query relative to last cursor. Wrap around\n// the document if there are no more matches.\nfunction findNextOccurrence(state, query) {\n    let { main, ranges } = state.selection;\n    let word = state.wordAt(main.head), fullWord = word && word.from == main.from && word.to == main.to;\n    for (let cycled = false, cursor = new SearchCursor(state.doc, query, ranges[ranges.length - 1].to);;) {\n        cursor.next();\n        if (cursor.done) {\n            if (cycled)\n                return null;\n            cursor = new SearchCursor(state.doc, query, 0, Math.max(0, ranges[ranges.length - 1].from - 1));\n            cycled = true;\n        }\n        else {\n            if (cycled && ranges.some(r => r.from == cursor.value.from))\n                continue;\n            if (fullWord) {\n                let word = state.wordAt(cursor.value.from);\n                if (!word || word.from != cursor.value.from || word.to != cursor.value.to)\n                    continue;\n            }\n            return cursor.value;\n        }\n    }\n}\n/**\nSelect next occurrence of the current selection. Expand selection\nto the surrounding word when the selection is empty.\n*/\nconst selectNextOccurrence = ({ state, dispatch }) => {\n    let { ranges } = state.selection;\n    if (ranges.some(sel => sel.from === sel.to))\n        return selectWord({ state, dispatch });\n    let searchedText = state.sliceDoc(ranges[0].from, ranges[0].to);\n    if (state.selection.ranges.some(r => state.sliceDoc(r.from, r.to) != searchedText))\n        return false;\n    let range = findNextOccurrence(state, searchedText);\n    if (!range)\n        return false;\n    dispatch(state.update({\n        selection: state.selection.addRange(EditorSelection.range(range.from, range.to), false),\n        effects: EditorView.scrollIntoView(range.to)\n    }));\n    return true;\n};\n\nconst searchConfigFacet = /*@__PURE__*/Facet.define({\n    combine(configs) {\n        return combineConfig(configs, {\n            top: false,\n            caseSensitive: false,\n            literal: false,\n            regexp: false,\n            wholeWord: false,\n            createPanel: view => new SearchPanel(view),\n            scrollToMatch: range => EditorView.scrollIntoView(range)\n        });\n    }\n});\n/**\nAdd search state to the editor configuration, and optionally\nconfigure the search extension.\n([`openSearchPanel`](https://codemirror.net/6/docs/ref/#search.openSearchPanel) will automatically\nenable this if it isn't already on).\n*/\nfunction search(config) {\n    return config ? [searchConfigFacet.of(config), searchExtensions] : searchExtensions;\n}\n/**\nA search query. Part of the editor's search state.\n*/\nclass SearchQuery {\n    /**\n    Create a query object.\n    */\n    constructor(config) {\n        this.search = config.search;\n        this.caseSensitive = !!config.caseSensitive;\n        this.literal = !!config.literal;\n        this.regexp = !!config.regexp;\n        this.replace = config.replace || \"\";\n        this.valid = !!this.search && (!this.regexp || validRegExp(this.search));\n        this.unquoted = this.unquote(this.search);\n        this.wholeWord = !!config.wholeWord;\n    }\n    /**\n    @internal\n    */\n    unquote(text) {\n        return this.literal ? text :\n            text.replace(/\\\\([nrt\\\\])/g, (_, ch) => ch == \"n\" ? \"\\n\" : ch == \"r\" ? \"\\r\" : ch == \"t\" ? \"\\t\" : \"\\\\\");\n    }\n    /**\n    Compare this query to another query.\n    */\n    eq(other) {\n        return this.search == other.search && this.replace == other.replace &&\n            this.caseSensitive == other.caseSensitive && this.regexp == other.regexp &&\n            this.wholeWord == other.wholeWord;\n    }\n    /**\n    @internal\n    */\n    create() {\n        return this.regexp ? new RegExpQuery(this) : new StringQuery(this);\n    }\n    /**\n    Get a search cursor for this query, searching through the given\n    range in the given state.\n    */\n    getCursor(state, from = 0, to) {\n        let st = state.doc ? state : EditorState.create({ doc: state });\n        if (to == null)\n            to = st.doc.length;\n        return this.regexp ? regexpCursor(this, st, from, to) : stringCursor(this, st, from, to);\n    }\n}\nclass QueryType {\n    constructor(spec) {\n        this.spec = spec;\n    }\n}\nfunction stringCursor(spec, state, from, to) {\n    return new SearchCursor(state.doc, spec.unquoted, from, to, spec.caseSensitive ? undefined : x => x.toLowerCase(), spec.wholeWord ? stringWordTest(state.doc, state.charCategorizer(state.selection.main.head)) : undefined);\n}\nfunction stringWordTest(doc, categorizer) {\n    return (from, to, buf, bufPos) => {\n        if (bufPos > from || bufPos + buf.length < to) {\n            bufPos = Math.max(0, from - 2);\n            buf = doc.sliceString(bufPos, Math.min(doc.length, to + 2));\n        }\n        return (categorizer(charBefore(buf, from - bufPos)) != CharCategory.Word ||\n            categorizer(charAfter(buf, from - bufPos)) != CharCategory.Word) &&\n            (categorizer(charAfter(buf, to - bufPos)) != CharCategory.Word ||\n                categorizer(charBefore(buf, to - bufPos)) != CharCategory.Word);\n    };\n}\nclass StringQuery extends QueryType {\n    constructor(spec) {\n        super(spec);\n    }\n    nextMatch(state, curFrom, curTo) {\n        let cursor = stringCursor(this.spec, state, curTo, state.doc.length).nextOverlapping();\n        if (cursor.done)\n            cursor = stringCursor(this.spec, state, 0, curFrom).nextOverlapping();\n        return cursor.done ? null : cursor.value;\n    }\n    // Searching in reverse is, rather than implementing an inverted search\n    // cursor, done by scanning chunk after chunk forward.\n    prevMatchInRange(state, from, to) {\n        for (let pos = to;;) {\n            let start = Math.max(from, pos - 10000 /* ChunkSize */ - this.spec.unquoted.length);\n            let cursor = stringCursor(this.spec, state, start, pos), range = null;\n            while (!cursor.nextOverlapping().done)\n                range = cursor.value;\n            if (range)\n                return range;\n            if (start == from)\n                return null;\n            pos -= 10000 /* ChunkSize */;\n        }\n    }\n    prevMatch(state, curFrom, curTo) {\n        return this.prevMatchInRange(state, 0, curFrom) ||\n            this.prevMatchInRange(state, curTo, state.doc.length);\n    }\n    getReplacement(_result) { return this.spec.unquote(this.spec.replace); }\n    matchAll(state, limit) {\n        let cursor = stringCursor(this.spec, state, 0, state.doc.length), ranges = [];\n        while (!cursor.next().done) {\n            if (ranges.length >= limit)\n                return null;\n            ranges.push(cursor.value);\n        }\n        return ranges;\n    }\n    highlight(state, from, to, add) {\n        let cursor = stringCursor(this.spec, state, Math.max(0, from - this.spec.unquoted.length), Math.min(to + this.spec.unquoted.length, state.doc.length));\n        while (!cursor.next().done)\n            add(cursor.value.from, cursor.value.to);\n    }\n}\nfunction regexpCursor(spec, state, from, to) {\n    return new RegExpCursor(state.doc, spec.search, {\n        ignoreCase: !spec.caseSensitive,\n        test: spec.wholeWord ? regexpWordTest(state.charCategorizer(state.selection.main.head)) : undefined\n    }, from, to);\n}\nfunction charBefore(str, index) {\n    return str.slice(findClusterBreak(str, index, false), index);\n}\nfunction charAfter(str, index) {\n    return str.slice(index, findClusterBreak(str, index));\n}\nfunction regexpWordTest(categorizer) {\n    return (_from, _to, match) => !match[0].length ||\n        (categorizer(charBefore(match.input, match.index)) != CharCategory.Word ||\n            categorizer(charAfter(match.input, match.index)) != CharCategory.Word) &&\n            (categorizer(charAfter(match.input, match.index + match[0].length)) != CharCategory.Word ||\n                categorizer(charBefore(match.input, match.index + match[0].length)) != CharCategory.Word);\n}\nclass RegExpQuery extends QueryType {\n    nextMatch(state, curFrom, curTo) {\n        let cursor = regexpCursor(this.spec, state, curTo, state.doc.length).next();\n        if (cursor.done)\n            cursor = regexpCursor(this.spec, state, 0, curFrom).next();\n        return cursor.done ? null : cursor.value;\n    }\n    prevMatchInRange(state, from, to) {\n        for (let size = 1;; size++) {\n            let start = Math.max(from, to - size * 10000 /* ChunkSize */);\n            let cursor = regexpCursor(this.spec, state, start, to), range = null;\n            while (!cursor.next().done)\n                range = cursor.value;\n            if (range && (start == from || range.from > start + 10))\n                return range;\n            if (start == from)\n                return null;\n        }\n    }\n    prevMatch(state, curFrom, curTo) {\n        return this.prevMatchInRange(state, 0, curFrom) ||\n            this.prevMatchInRange(state, curTo, state.doc.length);\n    }\n    getReplacement(result) {\n        return this.spec.unquote(this.spec.replace.replace(/\\$([$&\\d+])/g, (m, i) => i == \"$\" ? \"$\"\n            : i == \"&\" ? result.match[0]\n                : i != \"0\" && +i < result.match.length ? result.match[i]\n                    : m));\n    }\n    matchAll(state, limit) {\n        let cursor = regexpCursor(this.spec, state, 0, state.doc.length), ranges = [];\n        while (!cursor.next().done) {\n            if (ranges.length >= limit)\n                return null;\n            ranges.push(cursor.value);\n        }\n        return ranges;\n    }\n    highlight(state, from, to, add) {\n        let cursor = regexpCursor(this.spec, state, Math.max(0, from - 250 /* HighlightMargin */), Math.min(to + 250 /* HighlightMargin */, state.doc.length));\n        while (!cursor.next().done)\n            add(cursor.value.from, cursor.value.to);\n    }\n}\n/**\nA state effect that updates the current search query. Note that\nthis only has an effect if the search state has been initialized\n(by including [`search`](https://codemirror.net/6/docs/ref/#search.search) in your configuration or\nby running [`openSearchPanel`](https://codemirror.net/6/docs/ref/#search.openSearchPanel) at least\nonce).\n*/\nconst setSearchQuery = /*@__PURE__*/StateEffect.define();\nconst togglePanel = /*@__PURE__*/StateEffect.define();\nconst searchState = /*@__PURE__*/StateField.define({\n    create(state) {\n        return new SearchState(defaultQuery(state).create(), null);\n    },\n    update(value, tr) {\n        for (let effect of tr.effects) {\n            if (effect.is(setSearchQuery))\n                value = new SearchState(effect.value.create(), value.panel);\n            else if (effect.is(togglePanel))\n                value = new SearchState(value.query, effect.value ? createSearchPanel : null);\n        }\n        return value;\n    },\n    provide: f => showPanel.from(f, val => val.panel)\n});\n/**\nGet the current search query from an editor state.\n*/\nfunction getSearchQuery(state) {\n    let curState = state.field(searchState, false);\n    return curState ? curState.query.spec : defaultQuery(state);\n}\n/**\nQuery whether the search panel is open in the given editor state.\n*/\nfunction searchPanelOpen(state) {\n    var _a;\n    return ((_a = state.field(searchState, false)) === null || _a === void 0 ? void 0 : _a.panel) != null;\n}\nclass SearchState {\n    constructor(query, panel) {\n        this.query = query;\n        this.panel = panel;\n    }\n}\nconst matchMark = /*@__PURE__*/Decoration.mark({ class: \"cm-searchMatch\" }), selectedMatchMark = /*@__PURE__*/Decoration.mark({ class: \"cm-searchMatch cm-searchMatch-selected\" });\nconst searchHighlighter = /*@__PURE__*/ViewPlugin.fromClass(class {\n    constructor(view) {\n        this.view = view;\n        this.decorations = this.highlight(view.state.field(searchState));\n    }\n    update(update) {\n        let state = update.state.field(searchState);\n        if (state != update.startState.field(searchState) || update.docChanged || update.selectionSet || update.viewportChanged)\n            this.decorations = this.highlight(state);\n    }\n    highlight({ query, panel }) {\n        if (!panel || !query.spec.valid)\n            return Decoration.none;\n        let { view } = this;\n        let builder = new RangeSetBuilder();\n        for (let i = 0, ranges = view.visibleRanges, l = ranges.length; i < l; i++) {\n            let { from, to } = ranges[i];\n            while (i < l - 1 && to > ranges[i + 1].from - 2 * 250 /* HighlightMargin */)\n                to = ranges[++i].to;\n            query.highlight(view.state, from, to, (from, to) => {\n                let selected = view.state.selection.ranges.some(r => r.from == from && r.to == to);\n                builder.add(from, to, selected ? selectedMatchMark : matchMark);\n            });\n        }\n        return builder.finish();\n    }\n}, {\n    decorations: v => v.decorations\n});\nfunction searchCommand(f) {\n    return view => {\n        let state = view.state.field(searchState, false);\n        return state && state.query.spec.valid ? f(view, state) : openSearchPanel(view);\n    };\n}\n/**\nOpen the search panel if it isn't already open, and move the\nselection to the first match after the current main selection.\nWill wrap around to the start of the document when it reaches the\nend.\n*/\nconst findNext = /*@__PURE__*/searchCommand((view, { query }) => {\n    let { to } = view.state.selection.main;\n    let next = query.nextMatch(view.state, to, to);\n    if (!next)\n        return false;\n    let selection = EditorSelection.single(next.from, next.to);\n    let config = view.state.facet(searchConfigFacet);\n    view.dispatch({\n        selection,\n        effects: [announceMatch(view, next), config.scrollToMatch(selection.main, view)],\n        userEvent: \"select.search\"\n    });\n    selectSearchInput(view);\n    return true;\n});\n/**\nMove the selection to the previous instance of the search query,\nbefore the current main selection. Will wrap past the start\nof the document to start searching at the end again.\n*/\nconst findPrevious = /*@__PURE__*/searchCommand((view, { query }) => {\n    let { state } = view, { from } = state.selection.main;\n    let prev = query.prevMatch(state, from, from);\n    if (!prev)\n        return false;\n    let selection = EditorSelection.single(prev.from, prev.to);\n    let config = view.state.facet(searchConfigFacet);\n    view.dispatch({\n        selection,\n        effects: [announceMatch(view, prev), config.scrollToMatch(selection.main, view)],\n        userEvent: \"select.search\"\n    });\n    selectSearchInput(view);\n    return true;\n});\n/**\nSelect all instances of the search query.\n*/\nconst selectMatches = /*@__PURE__*/searchCommand((view, { query }) => {\n    let ranges = query.matchAll(view.state, 1000);\n    if (!ranges || !ranges.length)\n        return false;\n    view.dispatch({\n        selection: EditorSelection.create(ranges.map(r => EditorSelection.range(r.from, r.to))),\n        userEvent: \"select.search.matches\"\n    });\n    return true;\n});\n/**\nSelect all instances of the currently selected text.\n*/\nconst selectSelectionMatches = ({ state, dispatch }) => {\n    let sel = state.selection;\n    if (sel.ranges.length > 1 || sel.main.empty)\n        return false;\n    let { from, to } = sel.main;\n    let ranges = [], main = 0;\n    for (let cur = new SearchCursor(state.doc, state.sliceDoc(from, to)); !cur.next().done;) {\n        if (ranges.length > 1000)\n            return false;\n        if (cur.value.from == from)\n            main = ranges.length;\n        ranges.push(EditorSelection.range(cur.value.from, cur.value.to));\n    }\n    dispatch(state.update({\n        selection: EditorSelection.create(ranges, main),\n        userEvent: \"select.search.matches\"\n    }));\n    return true;\n};\n/**\nReplace the current match of the search query.\n*/\nconst replaceNext = /*@__PURE__*/searchCommand((view, { query }) => {\n    let { state } = view, { from, to } = state.selection.main;\n    if (state.readOnly)\n        return false;\n    let next = query.nextMatch(state, from, from);\n    if (!next)\n        return false;\n    let changes = [], selection, replacement;\n    let effects = [];\n    if (next.from == from && next.to == to) {\n        replacement = state.toText(query.getReplacement(next));\n        changes.push({ from: next.from, to: next.to, insert: replacement });\n        next = query.nextMatch(state, next.from, next.to);\n        effects.push(EditorView.announce.of(state.phrase(\"replaced match on line $\", state.doc.lineAt(from).number) + \".\"));\n    }\n    if (next) {\n        let off = changes.length == 0 || changes[0].from >= next.to ? 0 : next.to - next.from - replacement.length;\n        selection = EditorSelection.single(next.from - off, next.to - off);\n        effects.push(announceMatch(view, next));\n        effects.push(state.facet(searchConfigFacet).scrollToMatch(selection.main, view));\n    }\n    view.dispatch({\n        changes, selection, effects,\n        userEvent: \"input.replace\"\n    });\n    return true;\n});\n/**\nReplace all instances of the search query with the given\nreplacement.\n*/\nconst replaceAll = /*@__PURE__*/searchCommand((view, { query }) => {\n    if (view.state.readOnly)\n        return false;\n    let changes = query.matchAll(view.state, 1e9).map(match => {\n        let { from, to } = match;\n        return { from, to, insert: query.getReplacement(match) };\n    });\n    if (!changes.length)\n        return false;\n    let announceText = view.state.phrase(\"replaced $ matches\", changes.length) + \".\";\n    view.dispatch({\n        changes,\n        effects: EditorView.announce.of(announceText),\n        userEvent: \"input.replace.all\"\n    });\n    return true;\n});\nfunction createSearchPanel(view) {\n    return view.state.facet(searchConfigFacet).createPanel(view);\n}\nfunction defaultQuery(state, fallback) {\n    var _a, _b, _c, _d, _e;\n    let sel = state.selection.main;\n    let selText = sel.empty || sel.to > sel.from + 100 ? \"\" : state.sliceDoc(sel.from, sel.to);\n    if (fallback && !selText)\n        return fallback;\n    let config = state.facet(searchConfigFacet);\n    return new SearchQuery({\n        search: ((_a = fallback === null || fallback === void 0 ? void 0 : fallback.literal) !== null && _a !== void 0 ? _a : config.literal) ? selText : selText.replace(/\\n/g, \"\\\\n\"),\n        caseSensitive: (_b = fallback === null || fallback === void 0 ? void 0 : fallback.caseSensitive) !== null && _b !== void 0 ? _b : config.caseSensitive,\n        literal: (_c = fallback === null || fallback === void 0 ? void 0 : fallback.literal) !== null && _c !== void 0 ? _c : config.literal,\n        regexp: (_d = fallback === null || fallback === void 0 ? void 0 : fallback.regexp) !== null && _d !== void 0 ? _d : config.regexp,\n        wholeWord: (_e = fallback === null || fallback === void 0 ? void 0 : fallback.wholeWord) !== null && _e !== void 0 ? _e : config.wholeWord\n    });\n}\nfunction getSearchInput(view) {\n    let panel = getPanel(view, createSearchPanel);\n    return panel && panel.dom.querySelector(\"[main-field]\");\n}\nfunction selectSearchInput(view) {\n    let input = getSearchInput(view);\n    if (input && input == view.root.activeElement)\n        input.select();\n}\n/**\nMake sure the search panel is open and focused.\n*/\nconst openSearchPanel = view => {\n    let state = view.state.field(searchState, false);\n    if (state && state.panel) {\n        let searchInput = getSearchInput(view);\n        if (searchInput && searchInput != view.root.activeElement) {\n            let query = defaultQuery(view.state, state.query.spec);\n            if (query.valid)\n                view.dispatch({ effects: setSearchQuery.of(query) });\n            searchInput.focus();\n            searchInput.select();\n        }\n    }\n    else {\n        view.dispatch({ effects: [\n                togglePanel.of(true),\n                state ? setSearchQuery.of(defaultQuery(view.state, state.query.spec)) : StateEffect.appendConfig.of(searchExtensions)\n            ] });\n    }\n    return true;\n};\n/**\nClose the search panel.\n*/\nconst closeSearchPanel = view => {\n    let state = view.state.field(searchState, false);\n    if (!state || !state.panel)\n        return false;\n    let panel = getPanel(view, createSearchPanel);\n    if (panel && panel.dom.contains(view.root.activeElement))\n        view.focus();\n    view.dispatch({ effects: togglePanel.of(false) });\n    return true;\n};\n/**\nDefault search-related key bindings.\n\n - Mod-f: [`openSearchPanel`](https://codemirror.net/6/docs/ref/#search.openSearchPanel)\n - F3, Mod-g: [`findNext`](https://codemirror.net/6/docs/ref/#search.findNext)\n - Shift-F3, Shift-Mod-g: [`findPrevious`](https://codemirror.net/6/docs/ref/#search.findPrevious)\n - Alt-g: [`gotoLine`](https://codemirror.net/6/docs/ref/#search.gotoLine)\n - Mod-d: [`selectNextOccurrence`](https://codemirror.net/6/docs/ref/#search.selectNextOccurrence)\n*/\nconst searchKeymap = [\n    { key: \"Mod-f\", run: openSearchPanel, scope: \"editor search-panel\" },\n    { key: \"F3\", run: findNext, shift: findPrevious, scope: \"editor search-panel\", preventDefault: true },\n    { key: \"Mod-g\", run: findNext, shift: findPrevious, scope: \"editor search-panel\", preventDefault: true },\n    { key: \"Escape\", run: closeSearchPanel, scope: \"editor search-panel\" },\n    { key: \"Mod-Shift-l\", run: selectSelectionMatches },\n    { key: \"Alt-g\", run: gotoLine },\n    { key: \"Mod-d\", run: selectNextOccurrence, preventDefault: true },\n];\nclass SearchPanel {\n    constructor(view) {\n        this.view = view;\n        let query = this.query = view.state.field(searchState).query.spec;\n        this.commit = this.commit.bind(this);\n        this.searchField = elt(\"input\", {\n            value: query.search,\n            placeholder: phrase(view, \"Find\"),\n            \"aria-label\": phrase(view, \"Find\"),\n            class: \"cm-textfield\",\n            name: \"search\",\n            form: \"\",\n            \"main-field\": \"true\",\n            onchange: this.commit,\n            onkeyup: this.commit\n        });\n        this.replaceField = elt(\"input\", {\n            value: query.replace,\n            placeholder: phrase(view, \"Replace\"),\n            \"aria-label\": phrase(view, \"Replace\"),\n            class: \"cm-textfield\",\n            name: \"replace\",\n            form: \"\",\n            onchange: this.commit,\n            onkeyup: this.commit\n        });\n        this.caseField = elt(\"input\", {\n            type: \"checkbox\",\n            name: \"case\",\n            form: \"\",\n            checked: query.caseSensitive,\n            onchange: this.commit\n        });\n        this.reField = elt(\"input\", {\n            type: \"checkbox\",\n            name: \"re\",\n            form: \"\",\n            checked: query.regexp,\n            onchange: this.commit\n        });\n        this.wordField = elt(\"input\", {\n            type: \"checkbox\",\n            name: \"word\",\n            form: \"\",\n            checked: query.wholeWord,\n            onchange: this.commit\n        });\n        function button(name, onclick, content) {\n            return elt(\"button\", { class: \"cm-button\", name, onclick, type: \"button\" }, content);\n        }\n        this.dom = elt(\"div\", { onkeydown: (e) => this.keydown(e), class: \"cm-search\" }, [\n            this.searchField,\n            button(\"next\", () => findNext(view), [phrase(view, \"next\")]),\n            button(\"prev\", () => findPrevious(view), [phrase(view, \"previous\")]),\n            button(\"select\", () => selectMatches(view), [phrase(view, \"all\")]),\n            elt(\"label\", null, [this.caseField, phrase(view, \"match case\")]),\n            elt(\"label\", null, [this.reField, phrase(view, \"regexp\")]),\n            elt(\"label\", null, [this.wordField, phrase(view, \"by word\")]),\n            ...view.state.readOnly ? [] : [\n                elt(\"br\"),\n                this.replaceField,\n                button(\"replace\", () => replaceNext(view), [phrase(view, \"replace\")]),\n                button(\"replaceAll\", () => replaceAll(view), [phrase(view, \"replace all\")])\n            ],\n            elt(\"button\", {\n                name: \"close\",\n                onclick: () => closeSearchPanel(view),\n                \"aria-label\": phrase(view, \"close\"),\n                type: \"button\"\n            }, [\"×\"])\n        ]);\n    }\n    commit() {\n        let query = new SearchQuery({\n            search: this.searchField.value,\n            caseSensitive: this.caseField.checked,\n            regexp: this.reField.checked,\n            wholeWord: this.wordField.checked,\n            replace: this.replaceField.value,\n        });\n        if (!query.eq(this.query)) {\n            this.query = query;\n            this.view.dispatch({ effects: setSearchQuery.of(query) });\n        }\n    }\n    keydown(e) {\n        if (runScopeHandlers(this.view, e, \"search-panel\")) {\n            e.preventDefault();\n        }\n        else if (e.keyCode == 13 && e.target == this.searchField) {\n            e.preventDefault();\n            (e.shiftKey ? findPrevious : findNext)(this.view);\n        }\n        else if (e.keyCode == 13 && e.target == this.replaceField) {\n            e.preventDefault();\n            replaceNext(this.view);\n        }\n    }\n    update(update) {\n        for (let tr of update.transactions)\n            for (let effect of tr.effects) {\n                if (effect.is(setSearchQuery) && !effect.value.eq(this.query))\n                    this.setQuery(effect.value);\n            }\n    }\n    setQuery(query) {\n        this.query = query;\n        this.searchField.value = query.search;\n        this.replaceField.value = query.replace;\n        this.caseField.checked = query.caseSensitive;\n        this.reField.checked = query.regexp;\n        this.wordField.checked = query.wholeWord;\n    }\n    mount() {\n        this.searchField.select();\n    }\n    get pos() { return 80; }\n    get top() { return this.view.state.facet(searchConfigFacet).top; }\n}\nfunction phrase(view, phrase) { return view.state.phrase(phrase); }\nconst AnnounceMargin = 30;\nconst Break = /[\\s\\.,:;?!]/;\nfunction announceMatch(view, { from, to }) {\n    let line = view.state.doc.lineAt(from), lineEnd = view.state.doc.lineAt(to).to;\n    let start = Math.max(line.from, from - AnnounceMargin), end = Math.min(lineEnd, to + AnnounceMargin);\n    let text = view.state.sliceDoc(start, end);\n    if (start != line.from) {\n        for (let i = 0; i < AnnounceMargin; i++)\n            if (!Break.test(text[i + 1]) && Break.test(text[i])) {\n                text = text.slice(i);\n                break;\n            }\n    }\n    if (end != lineEnd) {\n        for (let i = text.length - 1; i > text.length - AnnounceMargin; i--)\n            if (!Break.test(text[i - 1]) && Break.test(text[i])) {\n                text = text.slice(0, i);\n                break;\n            }\n    }\n    return EditorView.announce.of(`${view.state.phrase(\"current match\")}. ${text} ${view.state.phrase(\"on line\")} ${line.number}.`);\n}\nconst baseTheme = /*@__PURE__*/EditorView.baseTheme({\n    \".cm-panel.cm-search\": {\n        padding: \"2px 6px 4px\",\n        position: \"relative\",\n        \"& [name=close]\": {\n            position: \"absolute\",\n            top: \"0\",\n            right: \"4px\",\n            backgroundColor: \"inherit\",\n            border: \"none\",\n            font: \"inherit\",\n            padding: 0,\n            margin: 0\n        },\n        \"& input, & button, & label\": {\n            margin: \".2em .6em .2em 0\"\n        },\n        \"& input[type=checkbox]\": {\n            marginRight: \".2em\"\n        },\n        \"& label\": {\n            fontSize: \"80%\",\n            whiteSpace: \"pre\"\n        }\n    },\n    \"&light .cm-searchMatch\": { backgroundColor: \"#ffff0054\" },\n    \"&dark .cm-searchMatch\": { backgroundColor: \"#00ffff8a\" },\n    \"&light .cm-searchMatch-selected\": { backgroundColor: \"#ff6a0054\" },\n    \"&dark .cm-searchMatch-selected\": { backgroundColor: \"#ff00ff8a\" }\n});\nconst searchExtensions = [\n    searchState,\n    /*@__PURE__*/Prec.lowest(searchHighlighter),\n    baseTheme\n];\n\nexport { RegExpCursor, SearchCursor, SearchQuery, closeSearchPanel, findNext, findPrevious, getSearchQuery, gotoLine, highlightSelectionMatches, openSearchPanel, replaceAll, replaceNext, search, searchKeymap, searchPanelOpen, selectMatches, selectNextOccurrence, selectSelectionMatches, setSearchQuery };\n","import { findClusterBreak as findClusterBreak$1 } from '@marijn/find-cluster-break';\n\n/**\nThe data structure for documents. @nonabstract\n*/\nclass Text {\n    /**\n    Get the line description around the given position.\n    */\n    lineAt(pos) {\n        if (pos < 0 || pos > this.length)\n            throw new RangeError(`Invalid position ${pos} in document of length ${this.length}`);\n        return this.lineInner(pos, false, 1, 0);\n    }\n    /**\n    Get the description for the given (1-based) line number.\n    */\n    line(n) {\n        if (n < 1 || n > this.lines)\n            throw new RangeError(`Invalid line number ${n} in ${this.lines}-line document`);\n        return this.lineInner(n, true, 1, 0);\n    }\n    /**\n    Replace a range of the text with the given content.\n    */\n    replace(from, to, text) {\n        [from, to] = clip(this, from, to);\n        let parts = [];\n        this.decompose(0, from, parts, 2 /* Open.To */);\n        if (text.length)\n            text.decompose(0, text.length, parts, 1 /* Open.From */ | 2 /* Open.To */);\n        this.decompose(to, this.length, parts, 1 /* Open.From */);\n        return TextNode.from(parts, this.length - (to - from) + text.length);\n    }\n    /**\n    Append another document to this one.\n    */\n    append(other) {\n        return this.replace(this.length, this.length, other);\n    }\n    /**\n    Retrieve the text between the given points.\n    */\n    slice(from, to = this.length) {\n        [from, to] = clip(this, from, to);\n        let parts = [];\n        this.decompose(from, to, parts, 0);\n        return TextNode.from(parts, to - from);\n    }\n    /**\n    Test whether this text is equal to another instance.\n    */\n    eq(other) {\n        if (other == this)\n            return true;\n        if (other.length != this.length || other.lines != this.lines)\n            return false;\n        let start = this.scanIdentical(other, 1), end = this.length - this.scanIdentical(other, -1);\n        let a = new RawTextCursor(this), b = new RawTextCursor(other);\n        for (let skip = start, pos = start;;) {\n            a.next(skip);\n            b.next(skip);\n            skip = 0;\n            if (a.lineBreak != b.lineBreak || a.done != b.done || a.value != b.value)\n                return false;\n            pos += a.value.length;\n            if (a.done || pos >= end)\n                return true;\n        }\n    }\n    /**\n    Iterate over the text. When `dir` is `-1`, iteration happens\n    from end to start. This will return lines and the breaks between\n    them as separate strings.\n    */\n    iter(dir = 1) { return new RawTextCursor(this, dir); }\n    /**\n    Iterate over a range of the text. When `from` > `to`, the\n    iterator will run in reverse.\n    */\n    iterRange(from, to = this.length) { return new PartialTextCursor(this, from, to); }\n    /**\n    Return a cursor that iterates over the given range of lines,\n    _without_ returning the line breaks between, and yielding empty\n    strings for empty lines.\n    \n    When `from` and `to` are given, they should be 1-based line numbers.\n    */\n    iterLines(from, to) {\n        let inner;\n        if (from == null) {\n            inner = this.iter();\n        }\n        else {\n            if (to == null)\n                to = this.lines + 1;\n            let start = this.line(from).from;\n            inner = this.iterRange(start, Math.max(start, to == this.lines + 1 ? this.length : to <= 1 ? 0 : this.line(to - 1).to));\n        }\n        return new LineCursor(inner);\n    }\n    /**\n    Return the document as a string, using newline characters to\n    separate lines.\n    */\n    toString() { return this.sliceString(0); }\n    /**\n    Convert the document to an array of lines (which can be\n    deserialized again via [`Text.of`](https://codemirror.net/6/docs/ref/#state.Text^of)).\n    */\n    toJSON() {\n        let lines = [];\n        this.flatten(lines);\n        return lines;\n    }\n    /**\n    @internal\n    */\n    constructor() { }\n    /**\n    Create a `Text` instance for the given array of lines.\n    */\n    static of(text) {\n        if (text.length == 0)\n            throw new RangeError(\"A document must have at least one line\");\n        if (text.length == 1 && !text[0])\n            return Text.empty;\n        return text.length <= 32 /* Tree.Branch */ ? new TextLeaf(text) : TextNode.from(TextLeaf.split(text, []));\n    }\n}\n// Leaves store an array of line strings. There are always line breaks\n// between these strings. Leaves are limited in size and have to be\n// contained in TextNode instances for bigger documents.\nclass TextLeaf extends Text {\n    constructor(text, length = textLength(text)) {\n        super();\n        this.text = text;\n        this.length = length;\n    }\n    get lines() { return this.text.length; }\n    get children() { return null; }\n    lineInner(target, isLine, line, offset) {\n        for (let i = 0;; i++) {\n            let string = this.text[i], end = offset + string.length;\n            if ((isLine ? line : end) >= target)\n                return new Line(offset, end, line, string);\n            offset = end + 1;\n            line++;\n        }\n    }\n    decompose(from, to, target, open) {\n        let text = from <= 0 && to >= this.length ? this\n            : new TextLeaf(sliceText(this.text, from, to), Math.min(to, this.length) - Math.max(0, from));\n        if (open & 1 /* Open.From */) {\n            let prev = target.pop();\n            let joined = appendText(text.text, prev.text.slice(), 0, text.length);\n            if (joined.length <= 32 /* Tree.Branch */) {\n                target.push(new TextLeaf(joined, prev.length + text.length));\n            }\n            else {\n                let mid = joined.length >> 1;\n                target.push(new TextLeaf(joined.slice(0, mid)), new TextLeaf(joined.slice(mid)));\n            }\n        }\n        else {\n            target.push(text);\n        }\n    }\n    replace(from, to, text) {\n        if (!(text instanceof TextLeaf))\n            return super.replace(from, to, text);\n        [from, to] = clip(this, from, to);\n        let lines = appendText(this.text, appendText(text.text, sliceText(this.text, 0, from)), to);\n        let newLen = this.length + text.length - (to - from);\n        if (lines.length <= 32 /* Tree.Branch */)\n            return new TextLeaf(lines, newLen);\n        return TextNode.from(TextLeaf.split(lines, []), newLen);\n    }\n    sliceString(from, to = this.length, lineSep = \"\\n\") {\n        [from, to] = clip(this, from, to);\n        let result = \"\";\n        for (let pos = 0, i = 0; pos <= to && i < this.text.length; i++) {\n            let line = this.text[i], end = pos + line.length;\n            if (pos > from && i)\n                result += lineSep;\n            if (from < end && to > pos)\n                result += line.slice(Math.max(0, from - pos), to - pos);\n            pos = end + 1;\n        }\n        return result;\n    }\n    flatten(target) {\n        for (let line of this.text)\n            target.push(line);\n    }\n    scanIdentical() { return 0; }\n    static split(text, target) {\n        let part = [], len = -1;\n        for (let line of text) {\n            part.push(line);\n            len += line.length + 1;\n            if (part.length == 32 /* Tree.Branch */) {\n                target.push(new TextLeaf(part, len));\n                part = [];\n                len = -1;\n            }\n        }\n        if (len > -1)\n            target.push(new TextLeaf(part, len));\n        return target;\n    }\n}\n// Nodes provide the tree structure of the `Text` type. They store a\n// number of other nodes or leaves, taking care to balance themselves\n// on changes. There are implied line breaks _between_ the children of\n// a node (but not before the first or after the last child).\nclass TextNode extends Text {\n    constructor(children, length) {\n        super();\n        this.children = children;\n        this.length = length;\n        this.lines = 0;\n        for (let child of children)\n            this.lines += child.lines;\n    }\n    lineInner(target, isLine, line, offset) {\n        for (let i = 0;; i++) {\n            let child = this.children[i], end = offset + child.length, endLine = line + child.lines - 1;\n            if ((isLine ? endLine : end) >= target)\n                return child.lineInner(target, isLine, line, offset);\n            offset = end + 1;\n            line = endLine + 1;\n        }\n    }\n    decompose(from, to, target, open) {\n        for (let i = 0, pos = 0; pos <= to && i < this.children.length; i++) {\n            let child = this.children[i], end = pos + child.length;\n            if (from <= end && to >= pos) {\n                let childOpen = open & ((pos <= from ? 1 /* Open.From */ : 0) | (end >= to ? 2 /* Open.To */ : 0));\n                if (pos >= from && end <= to && !childOpen)\n                    target.push(child);\n                else\n                    child.decompose(from - pos, to - pos, target, childOpen);\n            }\n            pos = end + 1;\n        }\n    }\n    replace(from, to, text) {\n        [from, to] = clip(this, from, to);\n        if (text.lines < this.lines)\n            for (let i = 0, pos = 0; i < this.children.length; i++) {\n                let child = this.children[i], end = pos + child.length;\n                // Fast path: if the change only affects one child and the\n                // child's size remains in the acceptable range, only update\n                // that child\n                if (from >= pos && to <= end) {\n                    let updated = child.replace(from - pos, to - pos, text);\n                    let totalLines = this.lines - child.lines + updated.lines;\n                    if (updated.lines < (totalLines >> (5 /* Tree.BranchShift */ - 1)) &&\n                        updated.lines > (totalLines >> (5 /* Tree.BranchShift */ + 1))) {\n                        let copy = this.children.slice();\n                        copy[i] = updated;\n                        return new TextNode(copy, this.length - (to - from) + text.length);\n                    }\n                    return super.replace(pos, end, updated);\n                }\n                pos = end + 1;\n            }\n        return super.replace(from, to, text);\n    }\n    sliceString(from, to = this.length, lineSep = \"\\n\") {\n        [from, to] = clip(this, from, to);\n        let result = \"\";\n        for (let i = 0, pos = 0; i < this.children.length && pos <= to; i++) {\n            let child = this.children[i], end = pos + child.length;\n            if (pos > from && i)\n                result += lineSep;\n            if (from < end && to > pos)\n                result += child.sliceString(from - pos, to - pos, lineSep);\n            pos = end + 1;\n        }\n        return result;\n    }\n    flatten(target) {\n        for (let child of this.children)\n            child.flatten(target);\n    }\n    scanIdentical(other, dir) {\n        if (!(other instanceof TextNode))\n            return 0;\n        let length = 0;\n        let [iA, iB, eA, eB] = dir > 0 ? [0, 0, this.children.length, other.children.length]\n            : [this.children.length - 1, other.children.length - 1, -1, -1];\n        for (;; iA += dir, iB += dir) {\n            if (iA == eA || iB == eB)\n                return length;\n            let chA = this.children[iA], chB = other.children[iB];\n            if (chA != chB)\n                return length + chA.scanIdentical(chB, dir);\n            length += chA.length + 1;\n        }\n    }\n    static from(children, length = children.reduce((l, ch) => l + ch.length + 1, -1)) {\n        let lines = 0;\n        for (let ch of children)\n            lines += ch.lines;\n        if (lines < 32 /* Tree.Branch */) {\n            let flat = [];\n            for (let ch of children)\n                ch.flatten(flat);\n            return new TextLeaf(flat, length);\n        }\n        let chunk = Math.max(32 /* Tree.Branch */, lines >> 5 /* Tree.BranchShift */), maxChunk = chunk << 1, minChunk = chunk >> 1;\n        let chunked = [], currentLines = 0, currentLen = -1, currentChunk = [];\n        function add(child) {\n            let last;\n            if (child.lines > maxChunk && child instanceof TextNode) {\n                for (let node of child.children)\n                    add(node);\n            }\n            else if (child.lines > minChunk && (currentLines > minChunk || !currentLines)) {\n                flush();\n                chunked.push(child);\n            }\n            else if (child instanceof TextLeaf && currentLines &&\n                (last = currentChunk[currentChunk.length - 1]) instanceof TextLeaf &&\n                child.lines + last.lines <= 32 /* Tree.Branch */) {\n                currentLines += child.lines;\n                currentLen += child.length + 1;\n                currentChunk[currentChunk.length - 1] = new TextLeaf(last.text.concat(child.text), last.length + 1 + child.length);\n            }\n            else {\n                if (currentLines + child.lines > chunk)\n                    flush();\n                currentLines += child.lines;\n                currentLen += child.length + 1;\n                currentChunk.push(child);\n            }\n        }\n        function flush() {\n            if (currentLines == 0)\n                return;\n            chunked.push(currentChunk.length == 1 ? currentChunk[0] : TextNode.from(currentChunk, currentLen));\n            currentLen = -1;\n            currentLines = currentChunk.length = 0;\n        }\n        for (let child of children)\n            add(child);\n        flush();\n        return chunked.length == 1 ? chunked[0] : new TextNode(chunked, length);\n    }\n}\nText.empty = /*@__PURE__*/new TextLeaf([\"\"], 0);\nfunction textLength(text) {\n    let length = -1;\n    for (let line of text)\n        length += line.length + 1;\n    return length;\n}\nfunction appendText(text, target, from = 0, to = 1e9) {\n    for (let pos = 0, i = 0, first = true; i < text.length && pos <= to; i++) {\n        let line = text[i], end = pos + line.length;\n        if (end >= from) {\n            if (end > to)\n                line = line.slice(0, to - pos);\n            if (pos < from)\n                line = line.slice(from - pos);\n            if (first) {\n                target[target.length - 1] += line;\n                first = false;\n            }\n            else\n                target.push(line);\n        }\n        pos = end + 1;\n    }\n    return target;\n}\nfunction sliceText(text, from, to) {\n    return appendText(text, [\"\"], from, to);\n}\nclass RawTextCursor {\n    constructor(text, dir = 1) {\n        this.dir = dir;\n        this.done = false;\n        this.lineBreak = false;\n        this.value = \"\";\n        this.nodes = [text];\n        this.offsets = [dir > 0 ? 1 : (text instanceof TextLeaf ? text.text.length : text.children.length) << 1];\n    }\n    nextInner(skip, dir) {\n        this.done = this.lineBreak = false;\n        for (;;) {\n            let last = this.nodes.length - 1;\n            let top = this.nodes[last], offsetValue = this.offsets[last], offset = offsetValue >> 1;\n            let size = top instanceof TextLeaf ? top.text.length : top.children.length;\n            if (offset == (dir > 0 ? size : 0)) {\n                if (last == 0) {\n                    this.done = true;\n                    this.value = \"\";\n                    return this;\n                }\n                if (dir > 0)\n                    this.offsets[last - 1]++;\n                this.nodes.pop();\n                this.offsets.pop();\n            }\n            else if ((offsetValue & 1) == (dir > 0 ? 0 : 1)) {\n                this.offsets[last] += dir;\n                if (skip == 0) {\n                    this.lineBreak = true;\n                    this.value = \"\\n\";\n                    return this;\n                }\n                skip--;\n            }\n            else if (top instanceof TextLeaf) {\n                // Move to the next string\n                let next = top.text[offset + (dir < 0 ? -1 : 0)];\n                this.offsets[last] += dir;\n                if (next.length > Math.max(0, skip)) {\n                    this.value = skip == 0 ? next : dir > 0 ? next.slice(skip) : next.slice(0, next.length - skip);\n                    return this;\n                }\n                skip -= next.length;\n            }\n            else {\n                let next = top.children[offset + (dir < 0 ? -1 : 0)];\n                if (skip > next.length) {\n                    skip -= next.length;\n                    this.offsets[last] += dir;\n                }\n                else {\n                    if (dir < 0)\n                        this.offsets[last]--;\n                    this.nodes.push(next);\n                    this.offsets.push(dir > 0 ? 1 : (next instanceof TextLeaf ? next.text.length : next.children.length) << 1);\n                }\n            }\n        }\n    }\n    next(skip = 0) {\n        if (skip < 0) {\n            this.nextInner(-skip, (-this.dir));\n            skip = this.value.length;\n        }\n        return this.nextInner(skip, this.dir);\n    }\n}\nclass PartialTextCursor {\n    constructor(text, start, end) {\n        this.value = \"\";\n        this.done = false;\n        this.cursor = new RawTextCursor(text, start > end ? -1 : 1);\n        this.pos = start > end ? text.length : 0;\n        this.from = Math.min(start, end);\n        this.to = Math.max(start, end);\n    }\n    nextInner(skip, dir) {\n        if (dir < 0 ? this.pos <= this.from : this.pos >= this.to) {\n            this.value = \"\";\n            this.done = true;\n            return this;\n        }\n        skip += Math.max(0, dir < 0 ? this.pos - this.to : this.from - this.pos);\n        let limit = dir < 0 ? this.pos - this.from : this.to - this.pos;\n        if (skip > limit)\n            skip = limit;\n        limit -= skip;\n        let { value } = this.cursor.next(skip);\n        this.pos += (value.length + skip) * dir;\n        this.value = value.length <= limit ? value : dir < 0 ? value.slice(value.length - limit) : value.slice(0, limit);\n        this.done = !this.value;\n        return this;\n    }\n    next(skip = 0) {\n        if (skip < 0)\n            skip = Math.max(skip, this.from - this.pos);\n        else if (skip > 0)\n            skip = Math.min(skip, this.to - this.pos);\n        return this.nextInner(skip, this.cursor.dir);\n    }\n    get lineBreak() { return this.cursor.lineBreak && this.value != \"\"; }\n}\nclass LineCursor {\n    constructor(inner) {\n        this.inner = inner;\n        this.afterBreak = true;\n        this.value = \"\";\n        this.done = false;\n    }\n    next(skip = 0) {\n        let { done, lineBreak, value } = this.inner.next(skip);\n        if (done && this.afterBreak) {\n            this.value = \"\";\n            this.afterBreak = false;\n        }\n        else if (done) {\n            this.done = true;\n            this.value = \"\";\n        }\n        else if (lineBreak) {\n            if (this.afterBreak) {\n                this.value = \"\";\n            }\n            else {\n                this.afterBreak = true;\n                this.next();\n            }\n        }\n        else {\n            this.value = value;\n            this.afterBreak = false;\n        }\n        return this;\n    }\n    get lineBreak() { return false; }\n}\nif (typeof Symbol != \"undefined\") {\n    Text.prototype[Symbol.iterator] = function () { return this.iter(); };\n    RawTextCursor.prototype[Symbol.iterator] = PartialTextCursor.prototype[Symbol.iterator] =\n        LineCursor.prototype[Symbol.iterator] = function () { return this; };\n}\n/**\nThis type describes a line in the document. It is created\non-demand when lines are [queried](https://codemirror.net/6/docs/ref/#state.Text.lineAt).\n*/\nclass Line {\n    /**\n    @internal\n    */\n    constructor(\n    /**\n    The position of the start of the line.\n    */\n    from, \n    /**\n    The position at the end of the line (_before_ the line break,\n    or at the end of document for the last line).\n    */\n    to, \n    /**\n    This line's line number (1-based).\n    */\n    number, \n    /**\n    The line's content.\n    */\n    text) {\n        this.from = from;\n        this.to = to;\n        this.number = number;\n        this.text = text;\n    }\n    /**\n    The length of the line (not including any line break after it).\n    */\n    get length() { return this.to - this.from; }\n}\nfunction clip(text, from, to) {\n    from = Math.max(0, Math.min(text.length, from));\n    return [from, Math.max(from, Math.min(text.length, to))];\n}\n\n/**\nReturns a next grapheme cluster break _after_ (not equal to)\n`pos`, if `forward` is true, or before otherwise. Returns `pos`\nitself if no further cluster break is available in the string.\nMoves across surrogate pairs, extending characters (when\n`includeExtending` is true), characters joined with zero-width\njoiners, and flag emoji.\n*/\nfunction findClusterBreak(str, pos, forward = true, includeExtending = true) {\n    return findClusterBreak$1(str, pos, forward, includeExtending);\n}\nfunction surrogateLow(ch) { return ch >= 0xDC00 && ch < 0xE000; }\nfunction surrogateHigh(ch) { return ch >= 0xD800 && ch < 0xDC00; }\n/**\nFind the code point at the given position in a string (like the\n[`codePointAt`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/codePointAt)\nstring method).\n*/\nfunction codePointAt(str, pos) {\n    let code0 = str.charCodeAt(pos);\n    if (!surrogateHigh(code0) || pos + 1 == str.length)\n        return code0;\n    let code1 = str.charCodeAt(pos + 1);\n    if (!surrogateLow(code1))\n        return code0;\n    return ((code0 - 0xd800) << 10) + (code1 - 0xdc00) + 0x10000;\n}\n/**\nGiven a Unicode codepoint, return the JavaScript string that\nrespresents it (like\n[`String.fromCodePoint`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/fromCodePoint)).\n*/\nfunction fromCodePoint(code) {\n    if (code <= 0xffff)\n        return String.fromCharCode(code);\n    code -= 0x10000;\n    return String.fromCharCode((code >> 10) + 0xd800, (code & 1023) + 0xdc00);\n}\n/**\nThe amount of positions a character takes up in a JavaScript string.\n*/\nfunction codePointSize(code) { return code < 0x10000 ? 1 : 2; }\n\nconst DefaultSplit = /\\r\\n?|\\n/;\n/**\nDistinguishes different ways in which positions can be mapped.\n*/\nvar MapMode = /*@__PURE__*/(function (MapMode) {\n    /**\n    Map a position to a valid new position, even when its context\n    was deleted.\n    */\n    MapMode[MapMode[\"Simple\"] = 0] = \"Simple\";\n    /**\n    Return null if deletion happens across the position.\n    */\n    MapMode[MapMode[\"TrackDel\"] = 1] = \"TrackDel\";\n    /**\n    Return null if the character _before_ the position is deleted.\n    */\n    MapMode[MapMode[\"TrackBefore\"] = 2] = \"TrackBefore\";\n    /**\n    Return null if the character _after_ the position is deleted.\n    */\n    MapMode[MapMode[\"TrackAfter\"] = 3] = \"TrackAfter\";\nreturn MapMode})(MapMode || (MapMode = {}));\n/**\nA change description is a variant of [change set](https://codemirror.net/6/docs/ref/#state.ChangeSet)\nthat doesn't store the inserted text. As such, it can't be\napplied, but is cheaper to store and manipulate.\n*/\nclass ChangeDesc {\n    // Sections are encoded as pairs of integers. The first is the\n    // length in the current document, and the second is -1 for\n    // unaffected sections, and the length of the replacement content\n    // otherwise. So an insertion would be (0, n>0), a deletion (n>0,\n    // 0), and a replacement two positive numbers.\n    /**\n    @internal\n    */\n    constructor(\n    /**\n    @internal\n    */\n    sections) {\n        this.sections = sections;\n    }\n    /**\n    The length of the document before the change.\n    */\n    get length() {\n        let result = 0;\n        for (let i = 0; i < this.sections.length; i += 2)\n            result += this.sections[i];\n        return result;\n    }\n    /**\n    The length of the document after the change.\n    */\n    get newLength() {\n        let result = 0;\n        for (let i = 0; i < this.sections.length; i += 2) {\n            let ins = this.sections[i + 1];\n            result += ins < 0 ? this.sections[i] : ins;\n        }\n        return result;\n    }\n    /**\n    False when there are actual changes in this set.\n    */\n    get empty() { return this.sections.length == 0 || this.sections.length == 2 && this.sections[1] < 0; }\n    /**\n    Iterate over the unchanged parts left by these changes. `posA`\n    provides the position of the range in the old document, `posB`\n    the new position in the changed document.\n    */\n    iterGaps(f) {\n        for (let i = 0, posA = 0, posB = 0; i < this.sections.length;) {\n            let len = this.sections[i++], ins = this.sections[i++];\n            if (ins < 0) {\n                f(posA, posB, len);\n                posB += len;\n            }\n            else {\n                posB += ins;\n            }\n            posA += len;\n        }\n    }\n    /**\n    Iterate over the ranges changed by these changes. (See\n    [`ChangeSet.iterChanges`](https://codemirror.net/6/docs/ref/#state.ChangeSet.iterChanges) for a\n    variant that also provides you with the inserted text.)\n    `fromA`/`toA` provides the extent of the change in the starting\n    document, `fromB`/`toB` the extent of the replacement in the\n    changed document.\n    \n    When `individual` is true, adjacent changes (which are kept\n    separate for [position mapping](https://codemirror.net/6/docs/ref/#state.ChangeDesc.mapPos)) are\n    reported separately.\n    */\n    iterChangedRanges(f, individual = false) {\n        iterChanges(this, f, individual);\n    }\n    /**\n    Get a description of the inverted form of these changes.\n    */\n    get invertedDesc() {\n        let sections = [];\n        for (let i = 0; i < this.sections.length;) {\n            let len = this.sections[i++], ins = this.sections[i++];\n            if (ins < 0)\n                sections.push(len, ins);\n            else\n                sections.push(ins, len);\n        }\n        return new ChangeDesc(sections);\n    }\n    /**\n    Compute the combined effect of applying another set of changes\n    after this one. The length of the document after this set should\n    match the length before `other`.\n    */\n    composeDesc(other) { return this.empty ? other : other.empty ? this : composeSets(this, other); }\n    /**\n    Map this description, which should start with the same document\n    as `other`, over another set of changes, so that it can be\n    applied after it. When `before` is true, map as if the changes\n    in `this` happened before the ones in `other`.\n    */\n    mapDesc(other, before = false) { return other.empty ? this : mapSet(this, other, before); }\n    mapPos(pos, assoc = -1, mode = MapMode.Simple) {\n        let posA = 0, posB = 0;\n        for (let i = 0; i < this.sections.length;) {\n            let len = this.sections[i++], ins = this.sections[i++], endA = posA + len;\n            if (ins < 0) {\n                if (endA > pos)\n                    return posB + (pos - posA);\n                posB += len;\n            }\n            else {\n                if (mode != MapMode.Simple && endA >= pos &&\n                    (mode == MapMode.TrackDel && posA < pos && endA > pos ||\n                        mode == MapMode.TrackBefore && posA < pos ||\n                        mode == MapMode.TrackAfter && endA > pos))\n                    return null;\n                if (endA > pos || endA == pos && assoc < 0 && !len)\n                    return pos == posA || assoc < 0 ? posB : posB + ins;\n                posB += ins;\n            }\n            posA = endA;\n        }\n        if (pos > posA)\n            throw new RangeError(`Position ${pos} is out of range for changeset of length ${posA}`);\n        return posB;\n    }\n    /**\n    Check whether these changes touch a given range. When one of the\n    changes entirely covers the range, the string `\"cover\"` is\n    returned.\n    */\n    touchesRange(from, to = from) {\n        for (let i = 0, pos = 0; i < this.sections.length && pos <= to;) {\n            let len = this.sections[i++], ins = this.sections[i++], end = pos + len;\n            if (ins >= 0 && pos <= to && end >= from)\n                return pos < from && end > to ? \"cover\" : true;\n            pos = end;\n        }\n        return false;\n    }\n    /**\n    @internal\n    */\n    toString() {\n        let result = \"\";\n        for (let i = 0; i < this.sections.length;) {\n            let len = this.sections[i++], ins = this.sections[i++];\n            result += (result ? \" \" : \"\") + len + (ins >= 0 ? \":\" + ins : \"\");\n        }\n        return result;\n    }\n    /**\n    Serialize this change desc to a JSON-representable value.\n    */\n    toJSON() { return this.sections; }\n    /**\n    Create a change desc from its JSON representation (as produced\n    by [`toJSON`](https://codemirror.net/6/docs/ref/#state.ChangeDesc.toJSON).\n    */\n    static fromJSON(json) {\n        if (!Array.isArray(json) || json.length % 2 || json.some(a => typeof a != \"number\"))\n            throw new RangeError(\"Invalid JSON representation of ChangeDesc\");\n        return new ChangeDesc(json);\n    }\n    /**\n    @internal\n    */\n    static create(sections) { return new ChangeDesc(sections); }\n}\n/**\nA change set represents a group of modifications to a document. It\nstores the document length, and can only be applied to documents\nwith exactly that length.\n*/\nclass ChangeSet extends ChangeDesc {\n    constructor(sections, \n    /**\n    @internal\n    */\n    inserted) {\n        super(sections);\n        this.inserted = inserted;\n    }\n    /**\n    Apply the changes to a document, returning the modified\n    document.\n    */\n    apply(doc) {\n        if (this.length != doc.length)\n            throw new RangeError(\"Applying change set to a document with the wrong length\");\n        iterChanges(this, (fromA, toA, fromB, _toB, text) => doc = doc.replace(fromB, fromB + (toA - fromA), text), false);\n        return doc;\n    }\n    mapDesc(other, before = false) { return mapSet(this, other, before, true); }\n    /**\n    Given the document as it existed _before_ the changes, return a\n    change set that represents the inverse of this set, which could\n    be used to go from the document created by the changes back to\n    the document as it existed before the changes.\n    */\n    invert(doc) {\n        let sections = this.sections.slice(), inserted = [];\n        for (let i = 0, pos = 0; i < sections.length; i += 2) {\n            let len = sections[i], ins = sections[i + 1];\n            if (ins >= 0) {\n                sections[i] = ins;\n                sections[i + 1] = len;\n                let index = i >> 1;\n                while (inserted.length < index)\n                    inserted.push(Text.empty);\n                inserted.push(len ? doc.slice(pos, pos + len) : Text.empty);\n            }\n            pos += len;\n        }\n        return new ChangeSet(sections, inserted);\n    }\n    /**\n    Combine two subsequent change sets into a single set. `other`\n    must start in the document produced by `this`. If `this` goes\n    `docA` → `docB` and `other` represents `docB` → `docC`, the\n    returned value will represent the change `docA` → `docC`.\n    */\n    compose(other) { return this.empty ? other : other.empty ? this : composeSets(this, other, true); }\n    /**\n    Given another change set starting in the same document, maps this\n    change set over the other, producing a new change set that can be\n    applied to the document produced by applying `other`. When\n    `before` is `true`, order changes as if `this` comes before\n    `other`, otherwise (the default) treat `other` as coming first.\n    \n    Given two changes `A` and `B`, `A.compose(B.map(A))` and\n    `B.compose(A.map(B, true))` will produce the same document. This\n    provides a basic form of [operational\n    transformation](https://en.wikipedia.org/wiki/Operational_transformation),\n    and can be used for collaborative editing.\n    */\n    map(other, before = false) { return other.empty ? this : mapSet(this, other, before, true); }\n    /**\n    Iterate over the changed ranges in the document, calling `f` for\n    each, with the range in the original document (`fromA`-`toA`)\n    and the range that replaces it in the new document\n    (`fromB`-`toB`).\n    \n    When `individual` is true, adjacent changes are reported\n    separately.\n    */\n    iterChanges(f, individual = false) {\n        iterChanges(this, f, individual);\n    }\n    /**\n    Get a [change description](https://codemirror.net/6/docs/ref/#state.ChangeDesc) for this change\n    set.\n    */\n    get desc() { return ChangeDesc.create(this.sections); }\n    /**\n    @internal\n    */\n    filter(ranges) {\n        let resultSections = [], resultInserted = [], filteredSections = [];\n        let iter = new SectionIter(this);\n        done: for (let i = 0, pos = 0;;) {\n            let next = i == ranges.length ? 1e9 : ranges[i++];\n            while (pos < next || pos == next && iter.len == 0) {\n                if (iter.done)\n                    break done;\n                let len = Math.min(iter.len, next - pos);\n                addSection(filteredSections, len, -1);\n                let ins = iter.ins == -1 ? -1 : iter.off == 0 ? iter.ins : 0;\n                addSection(resultSections, len, ins);\n                if (ins > 0)\n                    addInsert(resultInserted, resultSections, iter.text);\n                iter.forward(len);\n                pos += len;\n            }\n            let end = ranges[i++];\n            while (pos < end) {\n                if (iter.done)\n                    break done;\n                let len = Math.min(iter.len, end - pos);\n                addSection(resultSections, len, -1);\n                addSection(filteredSections, len, iter.ins == -1 ? -1 : iter.off == 0 ? iter.ins : 0);\n                iter.forward(len);\n                pos += len;\n            }\n        }\n        return { changes: new ChangeSet(resultSections, resultInserted),\n            filtered: ChangeDesc.create(filteredSections) };\n    }\n    /**\n    Serialize this change set to a JSON-representable value.\n    */\n    toJSON() {\n        let parts = [];\n        for (let i = 0; i < this.sections.length; i += 2) {\n            let len = this.sections[i], ins = this.sections[i + 1];\n            if (ins < 0)\n                parts.push(len);\n            else if (ins == 0)\n                parts.push([len]);\n            else\n                parts.push([len].concat(this.inserted[i >> 1].toJSON()));\n        }\n        return parts;\n    }\n    /**\n    Create a change set for the given changes, for a document of the\n    given length, using `lineSep` as line separator.\n    */\n    static of(changes, length, lineSep) {\n        let sections = [], inserted = [], pos = 0;\n        let total = null;\n        function flush(force = false) {\n            if (!force && !sections.length)\n                return;\n            if (pos < length)\n                addSection(sections, length - pos, -1);\n            let set = new ChangeSet(sections, inserted);\n            total = total ? total.compose(set.map(total)) : set;\n            sections = [];\n            inserted = [];\n            pos = 0;\n        }\n        function process(spec) {\n            if (Array.isArray(spec)) {\n                for (let sub of spec)\n                    process(sub);\n            }\n            else if (spec instanceof ChangeSet) {\n                if (spec.length != length)\n                    throw new RangeError(`Mismatched change set length (got ${spec.length}, expected ${length})`);\n                flush();\n                total = total ? total.compose(spec.map(total)) : spec;\n            }\n            else {\n                let { from, to = from, insert } = spec;\n                if (from > to || from < 0 || to > length)\n                    throw new RangeError(`Invalid change range ${from} to ${to} (in doc of length ${length})`);\n                let insText = !insert ? Text.empty : typeof insert == \"string\" ? Text.of(insert.split(lineSep || DefaultSplit)) : insert;\n                let insLen = insText.length;\n                if (from == to && insLen == 0)\n                    return;\n                if (from < pos)\n                    flush();\n                if (from > pos)\n                    addSection(sections, from - pos, -1);\n                addSection(sections, to - from, insLen);\n                addInsert(inserted, sections, insText);\n                pos = to;\n            }\n        }\n        process(changes);\n        flush(!total);\n        return total;\n    }\n    /**\n    Create an empty changeset of the given length.\n    */\n    static empty(length) {\n        return new ChangeSet(length ? [length, -1] : [], []);\n    }\n    /**\n    Create a changeset from its JSON representation (as produced by\n    [`toJSON`](https://codemirror.net/6/docs/ref/#state.ChangeSet.toJSON).\n    */\n    static fromJSON(json) {\n        if (!Array.isArray(json))\n            throw new RangeError(\"Invalid JSON representation of ChangeSet\");\n        let sections = [], inserted = [];\n        for (let i = 0; i < json.length; i++) {\n            let part = json[i];\n            if (typeof part == \"number\") {\n                sections.push(part, -1);\n            }\n            else if (!Array.isArray(part) || typeof part[0] != \"number\" || part.some((e, i) => i && typeof e != \"string\")) {\n                throw new RangeError(\"Invalid JSON representation of ChangeSet\");\n            }\n            else if (part.length == 1) {\n                sections.push(part[0], 0);\n            }\n            else {\n                while (inserted.length < i)\n                    inserted.push(Text.empty);\n                inserted[i] = Text.of(part.slice(1));\n                sections.push(part[0], inserted[i].length);\n            }\n        }\n        return new ChangeSet(sections, inserted);\n    }\n    /**\n    @internal\n    */\n    static createSet(sections, inserted) {\n        return new ChangeSet(sections, inserted);\n    }\n}\nfunction addSection(sections, len, ins, forceJoin = false) {\n    if (len == 0 && ins <= 0)\n        return;\n    let last = sections.length - 2;\n    if (last >= 0 && ins <= 0 && ins == sections[last + 1])\n        sections[last] += len;\n    else if (last >= 0 && len == 0 && sections[last] == 0)\n        sections[last + 1] += ins;\n    else if (forceJoin) {\n        sections[last] += len;\n        sections[last + 1] += ins;\n    }\n    else\n        sections.push(len, ins);\n}\nfunction addInsert(values, sections, value) {\n    if (value.length == 0)\n        return;\n    let index = (sections.length - 2) >> 1;\n    if (index < values.length) {\n        values[values.length - 1] = values[values.length - 1].append(value);\n    }\n    else {\n        while (values.length < index)\n            values.push(Text.empty);\n        values.push(value);\n    }\n}\nfunction iterChanges(desc, f, individual) {\n    let inserted = desc.inserted;\n    for (let posA = 0, posB = 0, i = 0; i < desc.sections.length;) {\n        let len = desc.sections[i++], ins = desc.sections[i++];\n        if (ins < 0) {\n            posA += len;\n            posB += len;\n        }\n        else {\n            let endA = posA, endB = posB, text = Text.empty;\n            for (;;) {\n                endA += len;\n                endB += ins;\n                if (ins && inserted)\n                    text = text.append(inserted[(i - 2) >> 1]);\n                if (individual || i == desc.sections.length || desc.sections[i + 1] < 0)\n                    break;\n                len = desc.sections[i++];\n                ins = desc.sections[i++];\n            }\n            f(posA, endA, posB, endB, text);\n            posA = endA;\n            posB = endB;\n        }\n    }\n}\nfunction mapSet(setA, setB, before, mkSet = false) {\n    // Produce a copy of setA that applies to the document after setB\n    // has been applied (assuming both start at the same document).\n    let sections = [], insert = mkSet ? [] : null;\n    let a = new SectionIter(setA), b = new SectionIter(setB);\n    // Iterate over both sets in parallel. inserted tracks, for changes\n    // in A that have to be processed piece-by-piece, whether their\n    // content has been inserted already, and refers to the section\n    // index.\n    for (let inserted = -1;;) {\n        if (a.done && b.len || b.done && a.len) {\n            throw new Error(\"Mismatched change set lengths\");\n        }\n        else if (a.ins == -1 && b.ins == -1) {\n            // Move across ranges skipped by both sets.\n            let len = Math.min(a.len, b.len);\n            addSection(sections, len, -1);\n            a.forward(len);\n            b.forward(len);\n        }\n        else if (b.ins >= 0 && (a.ins < 0 || inserted == a.i || a.off == 0 && (b.len < a.len || b.len == a.len && !before))) {\n            // If there's a change in B that comes before the next change in\n            // A (ordered by start pos, then len, then before flag), skip\n            // that (and process any changes in A it covers).\n            let len = b.len;\n            addSection(sections, b.ins, -1);\n            while (len) {\n                let piece = Math.min(a.len, len);\n                if (a.ins >= 0 && inserted < a.i && a.len <= piece) {\n                    addSection(sections, 0, a.ins);\n                    if (insert)\n                        addInsert(insert, sections, a.text);\n                    inserted = a.i;\n                }\n                a.forward(piece);\n                len -= piece;\n            }\n            b.next();\n        }\n        else if (a.ins >= 0) {\n            // Process the part of a change in A up to the start of the next\n            // non-deletion change in B (if overlapping).\n            let len = 0, left = a.len;\n            while (left) {\n                if (b.ins == -1) {\n                    let piece = Math.min(left, b.len);\n                    len += piece;\n                    left -= piece;\n                    b.forward(piece);\n                }\n                else if (b.ins == 0 && b.len < left) {\n                    left -= b.len;\n                    b.next();\n                }\n                else {\n                    break;\n                }\n            }\n            addSection(sections, len, inserted < a.i ? a.ins : 0);\n            if (insert && inserted < a.i)\n                addInsert(insert, sections, a.text);\n            inserted = a.i;\n            a.forward(a.len - left);\n        }\n        else if (a.done && b.done) {\n            return insert ? ChangeSet.createSet(sections, insert) : ChangeDesc.create(sections);\n        }\n        else {\n            throw new Error(\"Mismatched change set lengths\");\n        }\n    }\n}\nfunction composeSets(setA, setB, mkSet = false) {\n    let sections = [];\n    let insert = mkSet ? [] : null;\n    let a = new SectionIter(setA), b = new SectionIter(setB);\n    for (let open = false;;) {\n        if (a.done && b.done) {\n            return insert ? ChangeSet.createSet(sections, insert) : ChangeDesc.create(sections);\n        }\n        else if (a.ins == 0) { // Deletion in A\n            addSection(sections, a.len, 0, open);\n            a.next();\n        }\n        else if (b.len == 0 && !b.done) { // Insertion in B\n            addSection(sections, 0, b.ins, open);\n            if (insert)\n                addInsert(insert, sections, b.text);\n            b.next();\n        }\n        else if (a.done || b.done) {\n            throw new Error(\"Mismatched change set lengths\");\n        }\n        else {\n            let len = Math.min(a.len2, b.len), sectionLen = sections.length;\n            if (a.ins == -1) {\n                let insB = b.ins == -1 ? -1 : b.off ? 0 : b.ins;\n                addSection(sections, len, insB, open);\n                if (insert && insB)\n                    addInsert(insert, sections, b.text);\n            }\n            else if (b.ins == -1) {\n                addSection(sections, a.off ? 0 : a.len, len, open);\n                if (insert)\n                    addInsert(insert, sections, a.textBit(len));\n            }\n            else {\n                addSection(sections, a.off ? 0 : a.len, b.off ? 0 : b.ins, open);\n                if (insert && !b.off)\n                    addInsert(insert, sections, b.text);\n            }\n            open = (a.ins > len || b.ins >= 0 && b.len > len) && (open || sections.length > sectionLen);\n            a.forward2(len);\n            b.forward(len);\n        }\n    }\n}\nclass SectionIter {\n    constructor(set) {\n        this.set = set;\n        this.i = 0;\n        this.next();\n    }\n    next() {\n        let { sections } = this.set;\n        if (this.i < sections.length) {\n            this.len = sections[this.i++];\n            this.ins = sections[this.i++];\n        }\n        else {\n            this.len = 0;\n            this.ins = -2;\n        }\n        this.off = 0;\n    }\n    get done() { return this.ins == -2; }\n    get len2() { return this.ins < 0 ? this.len : this.ins; }\n    get text() {\n        let { inserted } = this.set, index = (this.i - 2) >> 1;\n        return index >= inserted.length ? Text.empty : inserted[index];\n    }\n    textBit(len) {\n        let { inserted } = this.set, index = (this.i - 2) >> 1;\n        return index >= inserted.length && !len ? Text.empty\n            : inserted[index].slice(this.off, len == null ? undefined : this.off + len);\n    }\n    forward(len) {\n        if (len == this.len)\n            this.next();\n        else {\n            this.len -= len;\n            this.off += len;\n        }\n    }\n    forward2(len) {\n        if (this.ins == -1)\n            this.forward(len);\n        else if (len == this.ins)\n            this.next();\n        else {\n            this.ins -= len;\n            this.off += len;\n        }\n    }\n}\n\n/**\nA single selection range. When\n[`allowMultipleSelections`](https://codemirror.net/6/docs/ref/#state.EditorState^allowMultipleSelections)\nis enabled, a [selection](https://codemirror.net/6/docs/ref/#state.EditorSelection) may hold\nmultiple ranges. By default, selections hold exactly one range.\n*/\nclass SelectionRange {\n    constructor(\n    /**\n    The lower boundary of the range.\n    */\n    from, \n    /**\n    The upper boundary of the range.\n    */\n    to, flags) {\n        this.from = from;\n        this.to = to;\n        this.flags = flags;\n    }\n    /**\n    The anchor of the range—the side that doesn't move when you\n    extend it.\n    */\n    get anchor() { return this.flags & 32 /* RangeFlag.Inverted */ ? this.to : this.from; }\n    /**\n    The head of the range, which is moved when the range is\n    [extended](https://codemirror.net/6/docs/ref/#state.SelectionRange.extend).\n    */\n    get head() { return this.flags & 32 /* RangeFlag.Inverted */ ? this.from : this.to; }\n    /**\n    True when `anchor` and `head` are at the same position.\n    */\n    get empty() { return this.from == this.to; }\n    /**\n    If this is a cursor that is explicitly associated with the\n    character on one of its sides, this returns the side. -1 means\n    the character before its position, 1 the character after, and 0\n    means no association.\n    */\n    get assoc() { return this.flags & 8 /* RangeFlag.AssocBefore */ ? -1 : this.flags & 16 /* RangeFlag.AssocAfter */ ? 1 : 0; }\n    /**\n    The bidirectional text level associated with this cursor, if\n    any.\n    */\n    get bidiLevel() {\n        let level = this.flags & 7 /* RangeFlag.BidiLevelMask */;\n        return level == 7 ? null : level;\n    }\n    /**\n    The goal column (stored vertical offset) associated with a\n    cursor. This is used to preserve the vertical position when\n    [moving](https://codemirror.net/6/docs/ref/#view.EditorView.moveVertically) across\n    lines of different length.\n    */\n    get goalColumn() {\n        let value = this.flags >> 6 /* RangeFlag.GoalColumnOffset */;\n        return value == 16777215 /* RangeFlag.NoGoalColumn */ ? undefined : value;\n    }\n    /**\n    Map this range through a change, producing a valid range in the\n    updated document.\n    */\n    map(change, assoc = -1) {\n        let from, to;\n        if (this.empty) {\n            from = to = change.mapPos(this.from, assoc);\n        }\n        else {\n            from = change.mapPos(this.from, 1);\n            to = change.mapPos(this.to, -1);\n        }\n        return from == this.from && to == this.to ? this : new SelectionRange(from, to, this.flags);\n    }\n    /**\n    Extend this range to cover at least `from` to `to`.\n    */\n    extend(from, to = from) {\n        if (from <= this.anchor && to >= this.anchor)\n            return EditorSelection.range(from, to);\n        let head = Math.abs(from - this.anchor) > Math.abs(to - this.anchor) ? from : to;\n        return EditorSelection.range(this.anchor, head);\n    }\n    /**\n    Compare this range to another range.\n    */\n    eq(other, includeAssoc = false) {\n        return this.anchor == other.anchor && this.head == other.head &&\n            (!includeAssoc || !this.empty || this.assoc == other.assoc);\n    }\n    /**\n    Return a JSON-serializable object representing the range.\n    */\n    toJSON() { return { anchor: this.anchor, head: this.head }; }\n    /**\n    Convert a JSON representation of a range to a `SelectionRange`\n    instance.\n    */\n    static fromJSON(json) {\n        if (!json || typeof json.anchor != \"number\" || typeof json.head != \"number\")\n            throw new RangeError(\"Invalid JSON representation for SelectionRange\");\n        return EditorSelection.range(json.anchor, json.head);\n    }\n    /**\n    @internal\n    */\n    static create(from, to, flags) {\n        return new SelectionRange(from, to, flags);\n    }\n}\n/**\nAn editor selection holds one or more selection ranges.\n*/\nclass EditorSelection {\n    constructor(\n    /**\n    The ranges in the selection, sorted by position. Ranges cannot\n    overlap (but they may touch, if they aren't empty).\n    */\n    ranges, \n    /**\n    The index of the _main_ range in the selection (which is\n    usually the range that was added last).\n    */\n    mainIndex) {\n        this.ranges = ranges;\n        this.mainIndex = mainIndex;\n    }\n    /**\n    Map a selection through a change. Used to adjust the selection\n    position for changes.\n    */\n    map(change, assoc = -1) {\n        if (change.empty)\n            return this;\n        return EditorSelection.create(this.ranges.map(r => r.map(change, assoc)), this.mainIndex);\n    }\n    /**\n    Compare this selection to another selection. By default, ranges\n    are compared only by position. When `includeAssoc` is true,\n    cursor ranges must also have the same\n    [`assoc`](https://codemirror.net/6/docs/ref/#state.SelectionRange.assoc) value.\n    */\n    eq(other, includeAssoc = false) {\n        if (this.ranges.length != other.ranges.length ||\n            this.mainIndex != other.mainIndex)\n            return false;\n        for (let i = 0; i < this.ranges.length; i++)\n            if (!this.ranges[i].eq(other.ranges[i], includeAssoc))\n                return false;\n        return true;\n    }\n    /**\n    Get the primary selection range. Usually, you should make sure\n    your code applies to _all_ ranges, by using methods like\n    [`changeByRange`](https://codemirror.net/6/docs/ref/#state.EditorState.changeByRange).\n    */\n    get main() { return this.ranges[this.mainIndex]; }\n    /**\n    Make sure the selection only has one range. Returns a selection\n    holding only the main range from this selection.\n    */\n    asSingle() {\n        return this.ranges.length == 1 ? this : new EditorSelection([this.main], 0);\n    }\n    /**\n    Extend this selection with an extra range.\n    */\n    addRange(range, main = true) {\n        return EditorSelection.create([range].concat(this.ranges), main ? 0 : this.mainIndex + 1);\n    }\n    /**\n    Replace a given range with another range, and then normalize the\n    selection to merge and sort ranges if necessary.\n    */\n    replaceRange(range, which = this.mainIndex) {\n        let ranges = this.ranges.slice();\n        ranges[which] = range;\n        return EditorSelection.create(ranges, this.mainIndex);\n    }\n    /**\n    Convert this selection to an object that can be serialized to\n    JSON.\n    */\n    toJSON() {\n        return { ranges: this.ranges.map(r => r.toJSON()), main: this.mainIndex };\n    }\n    /**\n    Create a selection from a JSON representation.\n    */\n    static fromJSON(json) {\n        if (!json || !Array.isArray(json.ranges) || typeof json.main != \"number\" || json.main >= json.ranges.length)\n            throw new RangeError(\"Invalid JSON representation for EditorSelection\");\n        return new EditorSelection(json.ranges.map((r) => SelectionRange.fromJSON(r)), json.main);\n    }\n    /**\n    Create a selection holding a single range.\n    */\n    static single(anchor, head = anchor) {\n        return new EditorSelection([EditorSelection.range(anchor, head)], 0);\n    }\n    /**\n    Sort and merge the given set of ranges, creating a valid\n    selection.\n    */\n    static create(ranges, mainIndex = 0) {\n        if (ranges.length == 0)\n            throw new RangeError(\"A selection needs at least one range\");\n        for (let pos = 0, i = 0; i < ranges.length; i++) {\n            let range = ranges[i];\n            if (range.empty ? range.from <= pos : range.from < pos)\n                return EditorSelection.normalized(ranges.slice(), mainIndex);\n            pos = range.to;\n        }\n        return new EditorSelection(ranges, mainIndex);\n    }\n    /**\n    Create a cursor selection range at the given position. You can\n    safely ignore the optional arguments in most situations.\n    */\n    static cursor(pos, assoc = 0, bidiLevel, goalColumn) {\n        return SelectionRange.create(pos, pos, (assoc == 0 ? 0 : assoc < 0 ? 8 /* RangeFlag.AssocBefore */ : 16 /* RangeFlag.AssocAfter */) |\n            (bidiLevel == null ? 7 : Math.min(6, bidiLevel)) |\n            ((goalColumn !== null && goalColumn !== void 0 ? goalColumn : 16777215 /* RangeFlag.NoGoalColumn */) << 6 /* RangeFlag.GoalColumnOffset */));\n    }\n    /**\n    Create a selection range.\n    */\n    static range(anchor, head, goalColumn, bidiLevel) {\n        let flags = ((goalColumn !== null && goalColumn !== void 0 ? goalColumn : 16777215 /* RangeFlag.NoGoalColumn */) << 6 /* RangeFlag.GoalColumnOffset */) |\n            (bidiLevel == null ? 7 : Math.min(6, bidiLevel));\n        return head < anchor ? SelectionRange.create(head, anchor, 32 /* RangeFlag.Inverted */ | 16 /* RangeFlag.AssocAfter */ | flags)\n            : SelectionRange.create(anchor, head, (head > anchor ? 8 /* RangeFlag.AssocBefore */ : 0) | flags);\n    }\n    /**\n    @internal\n    */\n    static normalized(ranges, mainIndex = 0) {\n        let main = ranges[mainIndex];\n        ranges.sort((a, b) => a.from - b.from);\n        mainIndex = ranges.indexOf(main);\n        for (let i = 1; i < ranges.length; i++) {\n            let range = ranges[i], prev = ranges[i - 1];\n            if (range.empty ? range.from <= prev.to : range.from < prev.to) {\n                let from = prev.from, to = Math.max(range.to, prev.to);\n                if (i <= mainIndex)\n                    mainIndex--;\n                ranges.splice(--i, 2, range.anchor > range.head ? EditorSelection.range(to, from) : EditorSelection.range(from, to));\n            }\n        }\n        return new EditorSelection(ranges, mainIndex);\n    }\n}\nfunction checkSelection(selection, docLength) {\n    for (let range of selection.ranges)\n        if (range.to > docLength)\n            throw new RangeError(\"Selection points outside of document\");\n}\n\nlet nextID = 0;\n/**\nA facet is a labeled value that is associated with an editor\nstate. It takes inputs from any number of extensions, and combines\nthose into a single output value.\n\nExamples of uses of facets are the [tab\nsize](https://codemirror.net/6/docs/ref/#state.EditorState^tabSize), [editor\nattributes](https://codemirror.net/6/docs/ref/#view.EditorView^editorAttributes), and [update\nlisteners](https://codemirror.net/6/docs/ref/#view.EditorView^updateListener).\n\nNote that `Facet` instances can be used anywhere where\n[`FacetReader`](https://codemirror.net/6/docs/ref/#state.FacetReader) is expected.\n*/\nclass Facet {\n    constructor(\n    /**\n    @internal\n    */\n    combine, \n    /**\n    @internal\n    */\n    compareInput, \n    /**\n    @internal\n    */\n    compare, isStatic, enables) {\n        this.combine = combine;\n        this.compareInput = compareInput;\n        this.compare = compare;\n        this.isStatic = isStatic;\n        /**\n        @internal\n        */\n        this.id = nextID++;\n        this.default = combine([]);\n        this.extensions = typeof enables == \"function\" ? enables(this) : enables;\n    }\n    /**\n    Returns a facet reader for this facet, which can be used to\n    [read](https://codemirror.net/6/docs/ref/#state.EditorState.facet) it but not to define values for it.\n    */\n    get reader() { return this; }\n    /**\n    Define a new facet.\n    */\n    static define(config = {}) {\n        return new Facet(config.combine || ((a) => a), config.compareInput || ((a, b) => a === b), config.compare || (!config.combine ? sameArray : (a, b) => a === b), !!config.static, config.enables);\n    }\n    /**\n    Returns an extension that adds the given value to this facet.\n    */\n    of(value) {\n        return new FacetProvider([], this, 0 /* Provider.Static */, value);\n    }\n    /**\n    Create an extension that computes a value for the facet from a\n    state. You must take care to declare the parts of the state that\n    this value depends on, since your function is only called again\n    for a new state when one of those parts changed.\n    \n    In cases where your value depends only on a single field, you'll\n    want to use the [`from`](https://codemirror.net/6/docs/ref/#state.Facet.from) method instead.\n    */\n    compute(deps, get) {\n        if (this.isStatic)\n            throw new Error(\"Can't compute a static facet\");\n        return new FacetProvider(deps, this, 1 /* Provider.Single */, get);\n    }\n    /**\n    Create an extension that computes zero or more values for this\n    facet from a state.\n    */\n    computeN(deps, get) {\n        if (this.isStatic)\n            throw new Error(\"Can't compute a static facet\");\n        return new FacetProvider(deps, this, 2 /* Provider.Multi */, get);\n    }\n    from(field, get) {\n        if (!get)\n            get = x => x;\n        return this.compute([field], state => get(state.field(field)));\n    }\n}\nfunction sameArray(a, b) {\n    return a == b || a.length == b.length && a.every((e, i) => e === b[i]);\n}\nclass FacetProvider {\n    constructor(dependencies, facet, type, value) {\n        this.dependencies = dependencies;\n        this.facet = facet;\n        this.type = type;\n        this.value = value;\n        this.id = nextID++;\n    }\n    dynamicSlot(addresses) {\n        var _a;\n        let getter = this.value;\n        let compare = this.facet.compareInput;\n        let id = this.id, idx = addresses[id] >> 1, multi = this.type == 2 /* Provider.Multi */;\n        let depDoc = false, depSel = false, depAddrs = [];\n        for (let dep of this.dependencies) {\n            if (dep == \"doc\")\n                depDoc = true;\n            else if (dep == \"selection\")\n                depSel = true;\n            else if ((((_a = addresses[dep.id]) !== null && _a !== void 0 ? _a : 1) & 1) == 0)\n                depAddrs.push(addresses[dep.id]);\n        }\n        return {\n            create(state) {\n                state.values[idx] = getter(state);\n                return 1 /* SlotStatus.Changed */;\n            },\n            update(state, tr) {\n                if ((depDoc && tr.docChanged) || (depSel && (tr.docChanged || tr.selection)) || ensureAll(state, depAddrs)) {\n                    let newVal = getter(state);\n                    if (multi ? !compareArray(newVal, state.values[idx], compare) : !compare(newVal, state.values[idx])) {\n                        state.values[idx] = newVal;\n                        return 1 /* SlotStatus.Changed */;\n                    }\n                }\n                return 0;\n            },\n            reconfigure: (state, oldState) => {\n                let newVal, oldAddr = oldState.config.address[id];\n                if (oldAddr != null) {\n                    let oldVal = getAddr(oldState, oldAddr);\n                    if (this.dependencies.every(dep => {\n                        return dep instanceof Facet ? oldState.facet(dep) === state.facet(dep) :\n                            dep instanceof StateField ? oldState.field(dep, false) == state.field(dep, false) : true;\n                    }) || (multi ? compareArray(newVal = getter(state), oldVal, compare) : compare(newVal = getter(state), oldVal))) {\n                        state.values[idx] = oldVal;\n                        return 0;\n                    }\n                }\n                else {\n                    newVal = getter(state);\n                }\n                state.values[idx] = newVal;\n                return 1 /* SlotStatus.Changed */;\n            }\n        };\n    }\n}\nfunction compareArray(a, b, compare) {\n    if (a.length != b.length)\n        return false;\n    for (let i = 0; i < a.length; i++)\n        if (!compare(a[i], b[i]))\n            return false;\n    return true;\n}\nfunction ensureAll(state, addrs) {\n    let changed = false;\n    for (let addr of addrs)\n        if (ensureAddr(state, addr) & 1 /* SlotStatus.Changed */)\n            changed = true;\n    return changed;\n}\nfunction dynamicFacetSlot(addresses, facet, providers) {\n    let providerAddrs = providers.map(p => addresses[p.id]);\n    let providerTypes = providers.map(p => p.type);\n    let dynamic = providerAddrs.filter(p => !(p & 1));\n    let idx = addresses[facet.id] >> 1;\n    function get(state) {\n        let values = [];\n        for (let i = 0; i < providerAddrs.length; i++) {\n            let value = getAddr(state, providerAddrs[i]);\n            if (providerTypes[i] == 2 /* Provider.Multi */)\n                for (let val of value)\n                    values.push(val);\n            else\n                values.push(value);\n        }\n        return facet.combine(values);\n    }\n    return {\n        create(state) {\n            for (let addr of providerAddrs)\n                ensureAddr(state, addr);\n            state.values[idx] = get(state);\n            return 1 /* SlotStatus.Changed */;\n        },\n        update(state, tr) {\n            if (!ensureAll(state, dynamic))\n                return 0;\n            let value = get(state);\n            if (facet.compare(value, state.values[idx]))\n                return 0;\n            state.values[idx] = value;\n            return 1 /* SlotStatus.Changed */;\n        },\n        reconfigure(state, oldState) {\n            let depChanged = ensureAll(state, providerAddrs);\n            let oldProviders = oldState.config.facets[facet.id], oldValue = oldState.facet(facet);\n            if (oldProviders && !depChanged && sameArray(providers, oldProviders)) {\n                state.values[idx] = oldValue;\n                return 0;\n            }\n            let value = get(state);\n            if (facet.compare(value, oldValue)) {\n                state.values[idx] = oldValue;\n                return 0;\n            }\n            state.values[idx] = value;\n            return 1 /* SlotStatus.Changed */;\n        }\n    };\n}\nconst initField = /*@__PURE__*/Facet.define({ static: true });\n/**\nFields can store additional information in an editor state, and\nkeep it in sync with the rest of the state.\n*/\nclass StateField {\n    constructor(\n    /**\n    @internal\n    */\n    id, createF, updateF, compareF, \n    /**\n    @internal\n    */\n    spec) {\n        this.id = id;\n        this.createF = createF;\n        this.updateF = updateF;\n        this.compareF = compareF;\n        this.spec = spec;\n        /**\n        @internal\n        */\n        this.provides = undefined;\n    }\n    /**\n    Define a state field.\n    */\n    static define(config) {\n        let field = new StateField(nextID++, config.create, config.update, config.compare || ((a, b) => a === b), config);\n        if (config.provide)\n            field.provides = config.provide(field);\n        return field;\n    }\n    create(state) {\n        let init = state.facet(initField).find(i => i.field == this);\n        return ((init === null || init === void 0 ? void 0 : init.create) || this.createF)(state);\n    }\n    /**\n    @internal\n    */\n    slot(addresses) {\n        let idx = addresses[this.id] >> 1;\n        return {\n            create: (state) => {\n                state.values[idx] = this.create(state);\n                return 1 /* SlotStatus.Changed */;\n            },\n            update: (state, tr) => {\n                let oldVal = state.values[idx];\n                let value = this.updateF(oldVal, tr);\n                if (this.compareF(oldVal, value))\n                    return 0;\n                state.values[idx] = value;\n                return 1 /* SlotStatus.Changed */;\n            },\n            reconfigure: (state, oldState) => {\n                if (oldState.config.address[this.id] != null) {\n                    state.values[idx] = oldState.field(this);\n                    return 0;\n                }\n                state.values[idx] = this.create(state);\n                return 1 /* SlotStatus.Changed */;\n            }\n        };\n    }\n    /**\n    Returns an extension that enables this field and overrides the\n    way it is initialized. Can be useful when you need to provide a\n    non-default starting value for the field.\n    */\n    init(create) {\n        return [this, initField.of({ field: this, create })];\n    }\n    /**\n    State field instances can be used as\n    [`Extension`](https://codemirror.net/6/docs/ref/#state.Extension) values to enable the field in a\n    given state.\n    */\n    get extension() { return this; }\n}\nconst Prec_ = { lowest: 4, low: 3, default: 2, high: 1, highest: 0 };\nfunction prec(value) {\n    return (ext) => new PrecExtension(ext, value);\n}\n/**\nBy default extensions are registered in the order they are found\nin the flattened form of nested array that was provided.\nIndividual extension values can be assigned a precedence to\noverride this. Extensions that do not have a precedence set get\nthe precedence of the nearest parent with a precedence, or\n[`default`](https://codemirror.net/6/docs/ref/#state.Prec.default) if there is no such parent. The\nfinal ordering of extensions is determined by first sorting by\nprecedence and then by order within each precedence.\n*/\nconst Prec = {\n    /**\n    The highest precedence level, for extensions that should end up\n    near the start of the precedence ordering.\n    */\n    highest: /*@__PURE__*/prec(Prec_.highest),\n    /**\n    A higher-than-default precedence, for extensions that should\n    come before those with default precedence.\n    */\n    high: /*@__PURE__*/prec(Prec_.high),\n    /**\n    The default precedence, which is also used for extensions\n    without an explicit precedence.\n    */\n    default: /*@__PURE__*/prec(Prec_.default),\n    /**\n    A lower-than-default precedence.\n    */\n    low: /*@__PURE__*/prec(Prec_.low),\n    /**\n    The lowest precedence level. Meant for things that should end up\n    near the end of the extension order.\n    */\n    lowest: /*@__PURE__*/prec(Prec_.lowest)\n};\nclass PrecExtension {\n    constructor(inner, prec) {\n        this.inner = inner;\n        this.prec = prec;\n    }\n}\n/**\nExtension compartments can be used to make a configuration\ndynamic. By [wrapping](https://codemirror.net/6/docs/ref/#state.Compartment.of) part of your\nconfiguration in a compartment, you can later\n[replace](https://codemirror.net/6/docs/ref/#state.Compartment.reconfigure) that part through a\ntransaction.\n*/\nclass Compartment {\n    /**\n    Create an instance of this compartment to add to your [state\n    configuration](https://codemirror.net/6/docs/ref/#state.EditorStateConfig.extensions).\n    */\n    of(ext) { return new CompartmentInstance(this, ext); }\n    /**\n    Create an [effect](https://codemirror.net/6/docs/ref/#state.TransactionSpec.effects) that\n    reconfigures this compartment.\n    */\n    reconfigure(content) {\n        return Compartment.reconfigure.of({ compartment: this, extension: content });\n    }\n    /**\n    Get the current content of the compartment in the state, or\n    `undefined` if it isn't present.\n    */\n    get(state) {\n        return state.config.compartments.get(this);\n    }\n}\nclass CompartmentInstance {\n    constructor(compartment, inner) {\n        this.compartment = compartment;\n        this.inner = inner;\n    }\n}\nclass Configuration {\n    constructor(base, compartments, dynamicSlots, address, staticValues, facets) {\n        this.base = base;\n        this.compartments = compartments;\n        this.dynamicSlots = dynamicSlots;\n        this.address = address;\n        this.staticValues = staticValues;\n        this.facets = facets;\n        this.statusTemplate = [];\n        while (this.statusTemplate.length < dynamicSlots.length)\n            this.statusTemplate.push(0 /* SlotStatus.Unresolved */);\n    }\n    staticFacet(facet) {\n        let addr = this.address[facet.id];\n        return addr == null ? facet.default : this.staticValues[addr >> 1];\n    }\n    static resolve(base, compartments, oldState) {\n        let fields = [];\n        let facets = Object.create(null);\n        let newCompartments = new Map();\n        for (let ext of flatten(base, compartments, newCompartments)) {\n            if (ext instanceof StateField)\n                fields.push(ext);\n            else\n                (facets[ext.facet.id] || (facets[ext.facet.id] = [])).push(ext);\n        }\n        let address = Object.create(null);\n        let staticValues = [];\n        let dynamicSlots = [];\n        for (let field of fields) {\n            address[field.id] = dynamicSlots.length << 1;\n            dynamicSlots.push(a => field.slot(a));\n        }\n        let oldFacets = oldState === null || oldState === void 0 ? void 0 : oldState.config.facets;\n        for (let id in facets) {\n            let providers = facets[id], facet = providers[0].facet;\n            let oldProviders = oldFacets && oldFacets[id] || [];\n            if (providers.every(p => p.type == 0 /* Provider.Static */)) {\n                address[facet.id] = (staticValues.length << 1) | 1;\n                if (sameArray(oldProviders, providers)) {\n                    staticValues.push(oldState.facet(facet));\n                }\n                else {\n                    let value = facet.combine(providers.map(p => p.value));\n                    staticValues.push(oldState && facet.compare(value, oldState.facet(facet)) ? oldState.facet(facet) : value);\n                }\n            }\n            else {\n                for (let p of providers) {\n                    if (p.type == 0 /* Provider.Static */) {\n                        address[p.id] = (staticValues.length << 1) | 1;\n                        staticValues.push(p.value);\n                    }\n                    else {\n                        address[p.id] = dynamicSlots.length << 1;\n                        dynamicSlots.push(a => p.dynamicSlot(a));\n                    }\n                }\n                address[facet.id] = dynamicSlots.length << 1;\n                dynamicSlots.push(a => dynamicFacetSlot(a, facet, providers));\n            }\n        }\n        let dynamic = dynamicSlots.map(f => f(address));\n        return new Configuration(base, newCompartments, dynamic, address, staticValues, facets);\n    }\n}\nfunction flatten(extension, compartments, newCompartments) {\n    let result = [[], [], [], [], []];\n    let seen = new Map();\n    function inner(ext, prec) {\n        let known = seen.get(ext);\n        if (known != null) {\n            if (known <= prec)\n                return;\n            let found = result[known].indexOf(ext);\n            if (found > -1)\n                result[known].splice(found, 1);\n            if (ext instanceof CompartmentInstance)\n                newCompartments.delete(ext.compartment);\n        }\n        seen.set(ext, prec);\n        if (Array.isArray(ext)) {\n            for (let e of ext)\n                inner(e, prec);\n        }\n        else if (ext instanceof CompartmentInstance) {\n            if (newCompartments.has(ext.compartment))\n                throw new RangeError(`Duplicate use of compartment in extensions`);\n            let content = compartments.get(ext.compartment) || ext.inner;\n            newCompartments.set(ext.compartment, content);\n            inner(content, prec);\n        }\n        else if (ext instanceof PrecExtension) {\n            inner(ext.inner, ext.prec);\n        }\n        else if (ext instanceof StateField) {\n            result[prec].push(ext);\n            if (ext.provides)\n                inner(ext.provides, prec);\n        }\n        else if (ext instanceof FacetProvider) {\n            result[prec].push(ext);\n            if (ext.facet.extensions)\n                inner(ext.facet.extensions, Prec_.default);\n        }\n        else {\n            let content = ext.extension;\n            if (!content)\n                throw new Error(`Unrecognized extension value in extension set (${ext}). This sometimes happens because multiple instances of @codemirror/state are loaded, breaking instanceof checks.`);\n            inner(content, prec);\n        }\n    }\n    inner(extension, Prec_.default);\n    return result.reduce((a, b) => a.concat(b));\n}\nfunction ensureAddr(state, addr) {\n    if (addr & 1)\n        return 2 /* SlotStatus.Computed */;\n    let idx = addr >> 1;\n    let status = state.status[idx];\n    if (status == 4 /* SlotStatus.Computing */)\n        throw new Error(\"Cyclic dependency between fields and/or facets\");\n    if (status & 2 /* SlotStatus.Computed */)\n        return status;\n    state.status[idx] = 4 /* SlotStatus.Computing */;\n    let changed = state.computeSlot(state, state.config.dynamicSlots[idx]);\n    return state.status[idx] = 2 /* SlotStatus.Computed */ | changed;\n}\nfunction getAddr(state, addr) {\n    return addr & 1 ? state.config.staticValues[addr >> 1] : state.values[addr >> 1];\n}\n\nconst languageData = /*@__PURE__*/Facet.define();\nconst allowMultipleSelections = /*@__PURE__*/Facet.define({\n    combine: values => values.some(v => v),\n    static: true\n});\nconst lineSeparator = /*@__PURE__*/Facet.define({\n    combine: values => values.length ? values[0] : undefined,\n    static: true\n});\nconst changeFilter = /*@__PURE__*/Facet.define();\nconst transactionFilter = /*@__PURE__*/Facet.define();\nconst transactionExtender = /*@__PURE__*/Facet.define();\nconst readOnly = /*@__PURE__*/Facet.define({\n    combine: values => values.length ? values[0] : false\n});\n\n/**\nAnnotations are tagged values that are used to add metadata to\ntransactions in an extensible way. They should be used to model\nthings that effect the entire transaction (such as its [time\nstamp](https://codemirror.net/6/docs/ref/#state.Transaction^time) or information about its\n[origin](https://codemirror.net/6/docs/ref/#state.Transaction^userEvent)). For effects that happen\n_alongside_ the other changes made by the transaction, [state\neffects](https://codemirror.net/6/docs/ref/#state.StateEffect) are more appropriate.\n*/\nclass Annotation {\n    /**\n    @internal\n    */\n    constructor(\n    /**\n    The annotation type.\n    */\n    type, \n    /**\n    The value of this annotation.\n    */\n    value) {\n        this.type = type;\n        this.value = value;\n    }\n    /**\n    Define a new type of annotation.\n    */\n    static define() { return new AnnotationType(); }\n}\n/**\nMarker that identifies a type of [annotation](https://codemirror.net/6/docs/ref/#state.Annotation).\n*/\nclass AnnotationType {\n    /**\n    Create an instance of this annotation.\n    */\n    of(value) { return new Annotation(this, value); }\n}\n/**\nRepresentation of a type of state effect. Defined with\n[`StateEffect.define`](https://codemirror.net/6/docs/ref/#state.StateEffect^define).\n*/\nclass StateEffectType {\n    /**\n    @internal\n    */\n    constructor(\n    // The `any` types in these function types are there to work\n    // around TypeScript issue #37631, where the type guard on\n    // `StateEffect.is` mysteriously stops working when these properly\n    // have type `Value`.\n    /**\n    @internal\n    */\n    map) {\n        this.map = map;\n    }\n    /**\n    Create a [state effect](https://codemirror.net/6/docs/ref/#state.StateEffect) instance of this\n    type.\n    */\n    of(value) { return new StateEffect(this, value); }\n}\n/**\nState effects can be used to represent additional effects\nassociated with a [transaction](https://codemirror.net/6/docs/ref/#state.Transaction.effects). They\nare often useful to model changes to custom [state\nfields](https://codemirror.net/6/docs/ref/#state.StateField), when those changes aren't implicit in\ndocument or selection changes.\n*/\nclass StateEffect {\n    /**\n    @internal\n    */\n    constructor(\n    /**\n    @internal\n    */\n    type, \n    /**\n    The value of this effect.\n    */\n    value) {\n        this.type = type;\n        this.value = value;\n    }\n    /**\n    Map this effect through a position mapping. Will return\n    `undefined` when that ends up deleting the effect.\n    */\n    map(mapping) {\n        let mapped = this.type.map(this.value, mapping);\n        return mapped === undefined ? undefined : mapped == this.value ? this : new StateEffect(this.type, mapped);\n    }\n    /**\n    Tells you whether this effect object is of a given\n    [type](https://codemirror.net/6/docs/ref/#state.StateEffectType).\n    */\n    is(type) { return this.type == type; }\n    /**\n    Define a new effect type. The type parameter indicates the type\n    of values that his effect holds. It should be a type that\n    doesn't include `undefined`, since that is used in\n    [mapping](https://codemirror.net/6/docs/ref/#state.StateEffect.map) to indicate that an effect is\n    removed.\n    */\n    static define(spec = {}) {\n        return new StateEffectType(spec.map || (v => v));\n    }\n    /**\n    Map an array of effects through a change set.\n    */\n    static mapEffects(effects, mapping) {\n        if (!effects.length)\n            return effects;\n        let result = [];\n        for (let effect of effects) {\n            let mapped = effect.map(mapping);\n            if (mapped)\n                result.push(mapped);\n        }\n        return result;\n    }\n}\n/**\nThis effect can be used to reconfigure the root extensions of\nthe editor. Doing this will discard any extensions\n[appended](https://codemirror.net/6/docs/ref/#state.StateEffect^appendConfig), but does not reset\nthe content of [reconfigured](https://codemirror.net/6/docs/ref/#state.Compartment.reconfigure)\ncompartments.\n*/\nStateEffect.reconfigure = /*@__PURE__*/StateEffect.define();\n/**\nAppend extensions to the top-level configuration of the editor.\n*/\nStateEffect.appendConfig = /*@__PURE__*/StateEffect.define();\n/**\nChanges to the editor state are grouped into transactions.\nTypically, a user action creates a single transaction, which may\ncontain any number of document changes, may change the selection,\nor have other effects. Create a transaction by calling\n[`EditorState.update`](https://codemirror.net/6/docs/ref/#state.EditorState.update), or immediately\ndispatch one by calling\n[`EditorView.dispatch`](https://codemirror.net/6/docs/ref/#view.EditorView.dispatch).\n*/\nclass Transaction {\n    constructor(\n    /**\n    The state from which the transaction starts.\n    */\n    startState, \n    /**\n    The document changes made by this transaction.\n    */\n    changes, \n    /**\n    The selection set by this transaction, or undefined if it\n    doesn't explicitly set a selection.\n    */\n    selection, \n    /**\n    The effects added to the transaction.\n    */\n    effects, \n    /**\n    @internal\n    */\n    annotations, \n    /**\n    Whether the selection should be scrolled into view after this\n    transaction is dispatched.\n    */\n    scrollIntoView) {\n        this.startState = startState;\n        this.changes = changes;\n        this.selection = selection;\n        this.effects = effects;\n        this.annotations = annotations;\n        this.scrollIntoView = scrollIntoView;\n        /**\n        @internal\n        */\n        this._doc = null;\n        /**\n        @internal\n        */\n        this._state = null;\n        if (selection)\n            checkSelection(selection, changes.newLength);\n        if (!annotations.some((a) => a.type == Transaction.time))\n            this.annotations = annotations.concat(Transaction.time.of(Date.now()));\n    }\n    /**\n    @internal\n    */\n    static create(startState, changes, selection, effects, annotations, scrollIntoView) {\n        return new Transaction(startState, changes, selection, effects, annotations, scrollIntoView);\n    }\n    /**\n    The new document produced by the transaction. Contrary to\n    [`.state`](https://codemirror.net/6/docs/ref/#state.Transaction.state)`.doc`, accessing this won't\n    force the entire new state to be computed right away, so it is\n    recommended that [transaction\n    filters](https://codemirror.net/6/docs/ref/#state.EditorState^transactionFilter) use this getter\n    when they need to look at the new document.\n    */\n    get newDoc() {\n        return this._doc || (this._doc = this.changes.apply(this.startState.doc));\n    }\n    /**\n    The new selection produced by the transaction. If\n    [`this.selection`](https://codemirror.net/6/docs/ref/#state.Transaction.selection) is undefined,\n    this will [map](https://codemirror.net/6/docs/ref/#state.EditorSelection.map) the start state's\n    current selection through the changes made by the transaction.\n    */\n    get newSelection() {\n        return this.selection || this.startState.selection.map(this.changes);\n    }\n    /**\n    The new state created by the transaction. Computed on demand\n    (but retained for subsequent access), so it is recommended not to\n    access it in [transaction\n    filters](https://codemirror.net/6/docs/ref/#state.EditorState^transactionFilter) when possible.\n    */\n    get state() {\n        if (!this._state)\n            this.startState.applyTransaction(this);\n        return this._state;\n    }\n    /**\n    Get the value of the given annotation type, if any.\n    */\n    annotation(type) {\n        for (let ann of this.annotations)\n            if (ann.type == type)\n                return ann.value;\n        return undefined;\n    }\n    /**\n    Indicates whether the transaction changed the document.\n    */\n    get docChanged() { return !this.changes.empty; }\n    /**\n    Indicates whether this transaction reconfigures the state\n    (through a [configuration compartment](https://codemirror.net/6/docs/ref/#state.Compartment) or\n    with a top-level configuration\n    [effect](https://codemirror.net/6/docs/ref/#state.StateEffect^reconfigure).\n    */\n    get reconfigured() { return this.startState.config != this.state.config; }\n    /**\n    Returns true if the transaction has a [user\n    event](https://codemirror.net/6/docs/ref/#state.Transaction^userEvent) annotation that is equal to\n    or more specific than `event`. For example, if the transaction\n    has `\"select.pointer\"` as user event, `\"select\"` and\n    `\"select.pointer\"` will match it.\n    */\n    isUserEvent(event) {\n        let e = this.annotation(Transaction.userEvent);\n        return !!(e && (e == event || e.length > event.length && e.slice(0, event.length) == event && e[event.length] == \".\"));\n    }\n}\n/**\nAnnotation used to store transaction timestamps. Automatically\nadded to every transaction, holding `Date.now()`.\n*/\nTransaction.time = /*@__PURE__*/Annotation.define();\n/**\nAnnotation used to associate a transaction with a user interface\nevent. Holds a string identifying the event, using a\ndot-separated format to support attaching more specific\ninformation. The events used by the core libraries are:\n\n - `\"input\"` when content is entered\n   - `\"input.type\"` for typed input\n     - `\"input.type.compose\"` for composition\n   - `\"input.paste\"` for pasted input\n   - `\"input.drop\"` when adding content with drag-and-drop\n   - `\"input.complete\"` when autocompleting\n - `\"delete\"` when the user deletes content\n   - `\"delete.selection\"` when deleting the selection\n   - `\"delete.forward\"` when deleting forward from the selection\n   - `\"delete.backward\"` when deleting backward from the selection\n   - `\"delete.cut\"` when cutting to the clipboard\n - `\"move\"` when content is moved\n   - `\"move.drop\"` when content is moved within the editor through drag-and-drop\n - `\"select\"` when explicitly changing the selection\n   - `\"select.pointer\"` when selecting with a mouse or other pointing device\n - `\"undo\"` and `\"redo\"` for history actions\n\nUse [`isUserEvent`](https://codemirror.net/6/docs/ref/#state.Transaction.isUserEvent) to check\nwhether the annotation matches a given event.\n*/\nTransaction.userEvent = /*@__PURE__*/Annotation.define();\n/**\nAnnotation indicating whether a transaction should be added to\nthe undo history or not.\n*/\nTransaction.addToHistory = /*@__PURE__*/Annotation.define();\n/**\nAnnotation indicating (when present and true) that a transaction\nrepresents a change made by some other actor, not the user. This\nis used, for example, to tag other people's changes in\ncollaborative editing.\n*/\nTransaction.remote = /*@__PURE__*/Annotation.define();\nfunction joinRanges(a, b) {\n    let result = [];\n    for (let iA = 0, iB = 0;;) {\n        let from, to;\n        if (iA < a.length && (iB == b.length || b[iB] >= a[iA])) {\n            from = a[iA++];\n            to = a[iA++];\n        }\n        else if (iB < b.length) {\n            from = b[iB++];\n            to = b[iB++];\n        }\n        else\n            return result;\n        if (!result.length || result[result.length - 1] < from)\n            result.push(from, to);\n        else if (result[result.length - 1] < to)\n            result[result.length - 1] = to;\n    }\n}\nfunction mergeTransaction(a, b, sequential) {\n    var _a;\n    let mapForA, mapForB, changes;\n    if (sequential) {\n        mapForA = b.changes;\n        mapForB = ChangeSet.empty(b.changes.length);\n        changes = a.changes.compose(b.changes);\n    }\n    else {\n        mapForA = b.changes.map(a.changes);\n        mapForB = a.changes.mapDesc(b.changes, true);\n        changes = a.changes.compose(mapForA);\n    }\n    return {\n        changes,\n        selection: b.selection ? b.selection.map(mapForB) : (_a = a.selection) === null || _a === void 0 ? void 0 : _a.map(mapForA),\n        effects: StateEffect.mapEffects(a.effects, mapForA).concat(StateEffect.mapEffects(b.effects, mapForB)),\n        annotations: a.annotations.length ? a.annotations.concat(b.annotations) : b.annotations,\n        scrollIntoView: a.scrollIntoView || b.scrollIntoView\n    };\n}\nfunction resolveTransactionInner(state, spec, docSize) {\n    let sel = spec.selection, annotations = asArray(spec.annotations);\n    if (spec.userEvent)\n        annotations = annotations.concat(Transaction.userEvent.of(spec.userEvent));\n    return {\n        changes: spec.changes instanceof ChangeSet ? spec.changes\n            : ChangeSet.of(spec.changes || [], docSize, state.facet(lineSeparator)),\n        selection: sel && (sel instanceof EditorSelection ? sel : EditorSelection.single(sel.anchor, sel.head)),\n        effects: asArray(spec.effects),\n        annotations,\n        scrollIntoView: !!spec.scrollIntoView\n    };\n}\nfunction resolveTransaction(state, specs, filter) {\n    let s = resolveTransactionInner(state, specs.length ? specs[0] : {}, state.doc.length);\n    if (specs.length && specs[0].filter === false)\n        filter = false;\n    for (let i = 1; i < specs.length; i++) {\n        if (specs[i].filter === false)\n            filter = false;\n        let seq = !!specs[i].sequential;\n        s = mergeTransaction(s, resolveTransactionInner(state, specs[i], seq ? s.changes.newLength : state.doc.length), seq);\n    }\n    let tr = Transaction.create(state, s.changes, s.selection, s.effects, s.annotations, s.scrollIntoView);\n    return extendTransaction(filter ? filterTransaction(tr) : tr);\n}\n// Finish a transaction by applying filters if necessary.\nfunction filterTransaction(tr) {\n    let state = tr.startState;\n    // Change filters\n    let result = true;\n    for (let filter of state.facet(changeFilter)) {\n        let value = filter(tr);\n        if (value === false) {\n            result = false;\n            break;\n        }\n        if (Array.isArray(value))\n            result = result === true ? value : joinRanges(result, value);\n    }\n    if (result !== true) {\n        let changes, back;\n        if (result === false) {\n            back = tr.changes.invertedDesc;\n            changes = ChangeSet.empty(state.doc.length);\n        }\n        else {\n            let filtered = tr.changes.filter(result);\n            changes = filtered.changes;\n            back = filtered.filtered.mapDesc(filtered.changes).invertedDesc;\n        }\n        tr = Transaction.create(state, changes, tr.selection && tr.selection.map(back), StateEffect.mapEffects(tr.effects, back), tr.annotations, tr.scrollIntoView);\n    }\n    // Transaction filters\n    let filters = state.facet(transactionFilter);\n    for (let i = filters.length - 1; i >= 0; i--) {\n        let filtered = filters[i](tr);\n        if (filtered instanceof Transaction)\n            tr = filtered;\n        else if (Array.isArray(filtered) && filtered.length == 1 && filtered[0] instanceof Transaction)\n            tr = filtered[0];\n        else\n            tr = resolveTransaction(state, asArray(filtered), false);\n    }\n    return tr;\n}\nfunction extendTransaction(tr) {\n    let state = tr.startState, extenders = state.facet(transactionExtender), spec = tr;\n    for (let i = extenders.length - 1; i >= 0; i--) {\n        let extension = extenders[i](tr);\n        if (extension && Object.keys(extension).length)\n            spec = mergeTransaction(spec, resolveTransactionInner(state, extension, tr.changes.newLength), true);\n    }\n    return spec == tr ? tr : Transaction.create(state, tr.changes, tr.selection, spec.effects, spec.annotations, spec.scrollIntoView);\n}\nconst none = [];\nfunction asArray(value) {\n    return value == null ? none : Array.isArray(value) ? value : [value];\n}\n\n/**\nThe categories produced by a [character\ncategorizer](https://codemirror.net/6/docs/ref/#state.EditorState.charCategorizer). These are used\ndo things like selecting by word.\n*/\nvar CharCategory = /*@__PURE__*/(function (CharCategory) {\n    /**\n    Word characters.\n    */\n    CharCategory[CharCategory[\"Word\"] = 0] = \"Word\";\n    /**\n    Whitespace.\n    */\n    CharCategory[CharCategory[\"Space\"] = 1] = \"Space\";\n    /**\n    Anything else.\n    */\n    CharCategory[CharCategory[\"Other\"] = 2] = \"Other\";\nreturn CharCategory})(CharCategory || (CharCategory = {}));\nconst nonASCIISingleCaseWordChar = /[\\u00df\\u0587\\u0590-\\u05f4\\u0600-\\u06ff\\u3040-\\u309f\\u30a0-\\u30ff\\u3400-\\u4db5\\u4e00-\\u9fcc\\uac00-\\ud7af]/;\nlet wordChar;\ntry {\n    wordChar = /*@__PURE__*/new RegExp(\"[\\\\p{Alphabetic}\\\\p{Number}_]\", \"u\");\n}\ncatch (_) { }\nfunction hasWordChar(str) {\n    if (wordChar)\n        return wordChar.test(str);\n    for (let i = 0; i < str.length; i++) {\n        let ch = str[i];\n        if (/\\w/.test(ch) || ch > \"\\x80\" && (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)))\n            return true;\n    }\n    return false;\n}\nfunction makeCategorizer(wordChars) {\n    return (char) => {\n        if (!/\\S/.test(char))\n            return CharCategory.Space;\n        if (hasWordChar(char))\n            return CharCategory.Word;\n        for (let i = 0; i < wordChars.length; i++)\n            if (char.indexOf(wordChars[i]) > -1)\n                return CharCategory.Word;\n        return CharCategory.Other;\n    };\n}\n\n/**\nThe editor state class is a persistent (immutable) data structure.\nTo update a state, you [create](https://codemirror.net/6/docs/ref/#state.EditorState.update) a\n[transaction](https://codemirror.net/6/docs/ref/#state.Transaction), which produces a _new_ state\ninstance, without modifying the original object.\n\nAs such, _never_ mutate properties of a state directly. That'll\njust break things.\n*/\nclass EditorState {\n    constructor(\n    /**\n    @internal\n    */\n    config, \n    /**\n    The current document.\n    */\n    doc, \n    /**\n    The current selection.\n    */\n    selection, \n    /**\n    @internal\n    */\n    values, computeSlot, tr) {\n        this.config = config;\n        this.doc = doc;\n        this.selection = selection;\n        this.values = values;\n        this.status = config.statusTemplate.slice();\n        this.computeSlot = computeSlot;\n        // Fill in the computed state immediately, so that further queries\n        // for it made during the update return this state\n        if (tr)\n            tr._state = this;\n        for (let i = 0; i < this.config.dynamicSlots.length; i++)\n            ensureAddr(this, i << 1);\n        this.computeSlot = null;\n    }\n    field(field, require = true) {\n        let addr = this.config.address[field.id];\n        if (addr == null) {\n            if (require)\n                throw new RangeError(\"Field is not present in this state\");\n            return undefined;\n        }\n        ensureAddr(this, addr);\n        return getAddr(this, addr);\n    }\n    /**\n    Create a [transaction](https://codemirror.net/6/docs/ref/#state.Transaction) that updates this\n    state. Any number of [transaction specs](https://codemirror.net/6/docs/ref/#state.TransactionSpec)\n    can be passed. Unless\n    [`sequential`](https://codemirror.net/6/docs/ref/#state.TransactionSpec.sequential) is set, the\n    [changes](https://codemirror.net/6/docs/ref/#state.TransactionSpec.changes) (if any) of each spec\n    are assumed to start in the _current_ document (not the document\n    produced by previous specs), and its\n    [selection](https://codemirror.net/6/docs/ref/#state.TransactionSpec.selection) and\n    [effects](https://codemirror.net/6/docs/ref/#state.TransactionSpec.effects) are assumed to refer\n    to the document created by its _own_ changes. The resulting\n    transaction contains the combined effect of all the different\n    specs. For [selection](https://codemirror.net/6/docs/ref/#state.TransactionSpec.selection), later\n    specs take precedence over earlier ones.\n    */\n    update(...specs) {\n        return resolveTransaction(this, specs, true);\n    }\n    /**\n    @internal\n    */\n    applyTransaction(tr) {\n        let conf = this.config, { base, compartments } = conf;\n        for (let effect of tr.effects) {\n            if (effect.is(Compartment.reconfigure)) {\n                if (conf) {\n                    compartments = new Map;\n                    conf.compartments.forEach((val, key) => compartments.set(key, val));\n                    conf = null;\n                }\n                compartments.set(effect.value.compartment, effect.value.extension);\n            }\n            else if (effect.is(StateEffect.reconfigure)) {\n                conf = null;\n                base = effect.value;\n            }\n            else if (effect.is(StateEffect.appendConfig)) {\n                conf = null;\n                base = asArray(base).concat(effect.value);\n            }\n        }\n        let startValues;\n        if (!conf) {\n            conf = Configuration.resolve(base, compartments, this);\n            let intermediateState = new EditorState(conf, this.doc, this.selection, conf.dynamicSlots.map(() => null), (state, slot) => slot.reconfigure(state, this), null);\n            startValues = intermediateState.values;\n        }\n        else {\n            startValues = tr.startState.values.slice();\n        }\n        let selection = tr.startState.facet(allowMultipleSelections) ? tr.newSelection : tr.newSelection.asSingle();\n        new EditorState(conf, tr.newDoc, selection, startValues, (state, slot) => slot.update(state, tr), tr);\n    }\n    /**\n    Create a [transaction spec](https://codemirror.net/6/docs/ref/#state.TransactionSpec) that\n    replaces every selection range with the given content.\n    */\n    replaceSelection(text) {\n        if (typeof text == \"string\")\n            text = this.toText(text);\n        return this.changeByRange(range => ({ changes: { from: range.from, to: range.to, insert: text },\n            range: EditorSelection.cursor(range.from + text.length) }));\n    }\n    /**\n    Create a set of changes and a new selection by running the given\n    function for each range in the active selection. The function\n    can return an optional set of changes (in the coordinate space\n    of the start document), plus an updated range (in the coordinate\n    space of the document produced by the call's own changes). This\n    method will merge all the changes and ranges into a single\n    changeset and selection, and return it as a [transaction\n    spec](https://codemirror.net/6/docs/ref/#state.TransactionSpec), which can be passed to\n    [`update`](https://codemirror.net/6/docs/ref/#state.EditorState.update).\n    */\n    changeByRange(f) {\n        let sel = this.selection;\n        let result1 = f(sel.ranges[0]);\n        let changes = this.changes(result1.changes), ranges = [result1.range];\n        let effects = asArray(result1.effects);\n        for (let i = 1; i < sel.ranges.length; i++) {\n            let result = f(sel.ranges[i]);\n            let newChanges = this.changes(result.changes), newMapped = newChanges.map(changes);\n            for (let j = 0; j < i; j++)\n                ranges[j] = ranges[j].map(newMapped);\n            let mapBy = changes.mapDesc(newChanges, true);\n            ranges.push(result.range.map(mapBy));\n            changes = changes.compose(newMapped);\n            effects = StateEffect.mapEffects(effects, newMapped).concat(StateEffect.mapEffects(asArray(result.effects), mapBy));\n        }\n        return {\n            changes,\n            selection: EditorSelection.create(ranges, sel.mainIndex),\n            effects\n        };\n    }\n    /**\n    Create a [change set](https://codemirror.net/6/docs/ref/#state.ChangeSet) from the given change\n    description, taking the state's document length and line\n    separator into account.\n    */\n    changes(spec = []) {\n        if (spec instanceof ChangeSet)\n            return spec;\n        return ChangeSet.of(spec, this.doc.length, this.facet(EditorState.lineSeparator));\n    }\n    /**\n    Using the state's [line\n    separator](https://codemirror.net/6/docs/ref/#state.EditorState^lineSeparator), create a\n    [`Text`](https://codemirror.net/6/docs/ref/#state.Text) instance from the given string.\n    */\n    toText(string) {\n        return Text.of(string.split(this.facet(EditorState.lineSeparator) || DefaultSplit));\n    }\n    /**\n    Return the given range of the document as a string.\n    */\n    sliceDoc(from = 0, to = this.doc.length) {\n        return this.doc.sliceString(from, to, this.lineBreak);\n    }\n    /**\n    Get the value of a state [facet](https://codemirror.net/6/docs/ref/#state.Facet).\n    */\n    facet(facet) {\n        let addr = this.config.address[facet.id];\n        if (addr == null)\n            return facet.default;\n        ensureAddr(this, addr);\n        return getAddr(this, addr);\n    }\n    /**\n    Convert this state to a JSON-serializable object. When custom\n    fields should be serialized, you can pass them in as an object\n    mapping property names (in the resulting object, which should\n    not use `doc` or `selection`) to fields.\n    */\n    toJSON(fields) {\n        let result = {\n            doc: this.sliceDoc(),\n            selection: this.selection.toJSON()\n        };\n        if (fields)\n            for (let prop in fields) {\n                let value = fields[prop];\n                if (value instanceof StateField && this.config.address[value.id] != null)\n                    result[prop] = value.spec.toJSON(this.field(fields[prop]), this);\n            }\n        return result;\n    }\n    /**\n    Deserialize a state from its JSON representation. When custom\n    fields should be deserialized, pass the same object you passed\n    to [`toJSON`](https://codemirror.net/6/docs/ref/#state.EditorState.toJSON) when serializing as\n    third argument.\n    */\n    static fromJSON(json, config = {}, fields) {\n        if (!json || typeof json.doc != \"string\")\n            throw new RangeError(\"Invalid JSON representation for EditorState\");\n        let fieldInit = [];\n        if (fields)\n            for (let prop in fields) {\n                if (Object.prototype.hasOwnProperty.call(json, prop)) {\n                    let field = fields[prop], value = json[prop];\n                    fieldInit.push(field.init(state => field.spec.fromJSON(value, state)));\n                }\n            }\n        return EditorState.create({\n            doc: json.doc,\n            selection: EditorSelection.fromJSON(json.selection),\n            extensions: config.extensions ? fieldInit.concat([config.extensions]) : fieldInit\n        });\n    }\n    /**\n    Create a new state. You'll usually only need this when\n    initializing an editor—updated states are created by applying\n    transactions.\n    */\n    static create(config = {}) {\n        let configuration = Configuration.resolve(config.extensions || [], new Map);\n        let doc = config.doc instanceof Text ? config.doc\n            : Text.of((config.doc || \"\").split(configuration.staticFacet(EditorState.lineSeparator) || DefaultSplit));\n        let selection = !config.selection ? EditorSelection.single(0)\n            : config.selection instanceof EditorSelection ? config.selection\n                : EditorSelection.single(config.selection.anchor, config.selection.head);\n        checkSelection(selection, doc.length);\n        if (!configuration.staticFacet(allowMultipleSelections))\n            selection = selection.asSingle();\n        return new EditorState(configuration, doc, selection, configuration.dynamicSlots.map(() => null), (state, slot) => slot.create(state), null);\n    }\n    /**\n    The size (in columns) of a tab in the document, determined by\n    the [`tabSize`](https://codemirror.net/6/docs/ref/#state.EditorState^tabSize) facet.\n    */\n    get tabSize() { return this.facet(EditorState.tabSize); }\n    /**\n    Get the proper [line-break](https://codemirror.net/6/docs/ref/#state.EditorState^lineSeparator)\n    string for this state.\n    */\n    get lineBreak() { return this.facet(EditorState.lineSeparator) || \"\\n\"; }\n    /**\n    Returns true when the editor is\n    [configured](https://codemirror.net/6/docs/ref/#state.EditorState^readOnly) to be read-only.\n    */\n    get readOnly() { return this.facet(readOnly); }\n    /**\n    Look up a translation for the given phrase (via the\n    [`phrases`](https://codemirror.net/6/docs/ref/#state.EditorState^phrases) facet), or return the\n    original string if no translation is found.\n    \n    If additional arguments are passed, they will be inserted in\n    place of markers like `$1` (for the first value) and `$2`, etc.\n    A single `$` is equivalent to `$1`, and `$$` will produce a\n    literal dollar sign.\n    */\n    phrase(phrase, ...insert) {\n        for (let map of this.facet(EditorState.phrases))\n            if (Object.prototype.hasOwnProperty.call(map, phrase)) {\n                phrase = map[phrase];\n                break;\n            }\n        if (insert.length)\n            phrase = phrase.replace(/\\$(\\$|\\d*)/g, (m, i) => {\n                if (i == \"$\")\n                    return \"$\";\n                let n = +(i || 1);\n                return !n || n > insert.length ? m : insert[n - 1];\n            });\n        return phrase;\n    }\n    /**\n    Find the values for a given language data field, provided by the\n    the [`languageData`](https://codemirror.net/6/docs/ref/#state.EditorState^languageData) facet.\n    \n    Examples of language data fields are...\n    \n    - [`\"commentTokens\"`](https://codemirror.net/6/docs/ref/#commands.CommentTokens) for specifying\n      comment syntax.\n    - [`\"autocomplete\"`](https://codemirror.net/6/docs/ref/#autocomplete.autocompletion^config.override)\n      for providing language-specific completion sources.\n    - [`\"wordChars\"`](https://codemirror.net/6/docs/ref/#state.EditorState.charCategorizer) for adding\n      characters that should be considered part of words in this\n      language.\n    - [`\"closeBrackets\"`](https://codemirror.net/6/docs/ref/#autocomplete.CloseBracketConfig) controls\n      bracket closing behavior.\n    */\n    languageDataAt(name, pos, side = -1) {\n        let values = [];\n        for (let provider of this.facet(languageData)) {\n            for (let result of provider(this, pos, side)) {\n                if (Object.prototype.hasOwnProperty.call(result, name))\n                    values.push(result[name]);\n            }\n        }\n        return values;\n    }\n    /**\n    Return a function that can categorize strings (expected to\n    represent a single [grapheme cluster](https://codemirror.net/6/docs/ref/#state.findClusterBreak))\n    into one of:\n    \n     - Word (contains an alphanumeric character or a character\n       explicitly listed in the local language's `\"wordChars\"`\n       language data, which should be a string)\n     - Space (contains only whitespace)\n     - Other (anything else)\n    */\n    charCategorizer(at) {\n        return makeCategorizer(this.languageDataAt(\"wordChars\", at).join(\"\"));\n    }\n    /**\n    Find the word at the given position, meaning the range\n    containing all [word](https://codemirror.net/6/docs/ref/#state.CharCategory.Word) characters\n    around it. If no word characters are adjacent to the position,\n    this returns null.\n    */\n    wordAt(pos) {\n        let { text, from, length } = this.doc.lineAt(pos);\n        let cat = this.charCategorizer(pos);\n        let start = pos - from, end = pos - from;\n        while (start > 0) {\n            let prev = findClusterBreak(text, start, false);\n            if (cat(text.slice(prev, start)) != CharCategory.Word)\n                break;\n            start = prev;\n        }\n        while (end < length) {\n            let next = findClusterBreak(text, end);\n            if (cat(text.slice(end, next)) != CharCategory.Word)\n                break;\n            end = next;\n        }\n        return start == end ? null : EditorSelection.range(start + from, end + from);\n    }\n}\n/**\nA facet that, when enabled, causes the editor to allow multiple\nranges to be selected. Be careful though, because by default the\neditor relies on the native DOM selection, which cannot handle\nmultiple selections. An extension like\n[`drawSelection`](https://codemirror.net/6/docs/ref/#view.drawSelection) can be used to make\nsecondary selections visible to the user.\n*/\nEditorState.allowMultipleSelections = allowMultipleSelections;\n/**\nConfigures the tab size to use in this state. The first\n(highest-precedence) value of the facet is used. If no value is\ngiven, this defaults to 4.\n*/\nEditorState.tabSize = /*@__PURE__*/Facet.define({\n    combine: values => values.length ? values[0] : 4\n});\n/**\nThe line separator to use. By default, any of `\"\\n\"`, `\"\\r\\n\"`\nand `\"\\r\"` is treated as a separator when splitting lines, and\nlines are joined with `\"\\n\"`.\n\nWhen you configure a value here, only that precise separator\nwill be used, allowing you to round-trip documents through the\neditor without normalizing line separators.\n*/\nEditorState.lineSeparator = lineSeparator;\n/**\nThis facet controls the value of the\n[`readOnly`](https://codemirror.net/6/docs/ref/#state.EditorState.readOnly) getter, which is\nconsulted by commands and extensions that implement editing\nfunctionality to determine whether they should apply. It\ndefaults to false, but when its highest-precedence value is\n`true`, such functionality disables itself.\n\nNot to be confused with\n[`EditorView.editable`](https://codemirror.net/6/docs/ref/#view.EditorView^editable), which\ncontrols whether the editor's DOM is set to be editable (and\nthus focusable).\n*/\nEditorState.readOnly = readOnly;\n/**\nRegisters translation phrases. The\n[`phrase`](https://codemirror.net/6/docs/ref/#state.EditorState.phrase) method will look through\nall objects registered with this facet to find translations for\nits argument.\n*/\nEditorState.phrases = /*@__PURE__*/Facet.define({\n    compare(a, b) {\n        let kA = Object.keys(a), kB = Object.keys(b);\n        return kA.length == kB.length && kA.every(k => a[k] == b[k]);\n    }\n});\n/**\nA facet used to register [language\ndata](https://codemirror.net/6/docs/ref/#state.EditorState.languageDataAt) providers.\n*/\nEditorState.languageData = languageData;\n/**\nFacet used to register change filters, which are called for each\ntransaction (unless explicitly\n[disabled](https://codemirror.net/6/docs/ref/#state.TransactionSpec.filter)), and can suppress\npart of the transaction's changes.\n\nSuch a function can return `true` to indicate that it doesn't\nwant to do anything, `false` to completely stop the changes in\nthe transaction, or a set of ranges in which changes should be\nsuppressed. Such ranges are represented as an array of numbers,\nwith each pair of two numbers indicating the start and end of a\nrange. So for example `[10, 20, 100, 110]` suppresses changes\nbetween 10 and 20, and between 100 and 110.\n*/\nEditorState.changeFilter = changeFilter;\n/**\nFacet used to register a hook that gets a chance to update or\nreplace transaction specs before they are applied. This will\nonly be applied for transactions that don't have\n[`filter`](https://codemirror.net/6/docs/ref/#state.TransactionSpec.filter) set to `false`. You\ncan either return a single transaction spec (possibly the input\ntransaction), or an array of specs (which will be combined in\nthe same way as the arguments to\n[`EditorState.update`](https://codemirror.net/6/docs/ref/#state.EditorState.update)).\n\nWhen possible, it is recommended to avoid accessing\n[`Transaction.state`](https://codemirror.net/6/docs/ref/#state.Transaction.state) in a filter,\nsince it will force creation of a state that will then be\ndiscarded again, if the transaction is actually filtered.\n\n(This functionality should be used with care. Indiscriminately\nmodifying transaction is likely to break something or degrade\nthe user experience.)\n*/\nEditorState.transactionFilter = transactionFilter;\n/**\nThis is a more limited form of\n[`transactionFilter`](https://codemirror.net/6/docs/ref/#state.EditorState^transactionFilter),\nwhich can only add\n[annotations](https://codemirror.net/6/docs/ref/#state.TransactionSpec.annotations) and\n[effects](https://codemirror.net/6/docs/ref/#state.TransactionSpec.effects). _But_, this type\nof filter runs even if the transaction has disabled regular\n[filtering](https://codemirror.net/6/docs/ref/#state.TransactionSpec.filter), making it suitable\nfor effects that don't need to touch the changes or selection,\nbut do want to process every transaction.\n\nExtenders run _after_ filters, when both are present.\n*/\nEditorState.transactionExtender = transactionExtender;\nCompartment.reconfigure = /*@__PURE__*/StateEffect.define();\n\n/**\nUtility function for combining behaviors to fill in a config\nobject from an array of provided configs. `defaults` should hold\ndefault values for all optional fields in `Config`.\n\nThe function will, by default, error\nwhen a field gets two values that aren't `===`-equal, but you can\nprovide combine functions per field to do something else.\n*/\nfunction combineConfig(configs, defaults, // Should hold only the optional properties of Config, but I haven't managed to express that\ncombine = {}) {\n    let result = {};\n    for (let config of configs)\n        for (let key of Object.keys(config)) {\n            let value = config[key], current = result[key];\n            if (current === undefined)\n                result[key] = value;\n            else if (current === value || value === undefined) ; // No conflict\n            else if (Object.hasOwnProperty.call(combine, key))\n                result[key] = combine[key](current, value);\n            else\n                throw new Error(\"Config merge conflict for field \" + key);\n        }\n    for (let key in defaults)\n        if (result[key] === undefined)\n            result[key] = defaults[key];\n    return result;\n}\n\n/**\nEach range is associated with a value, which must inherit from\nthis class.\n*/\nclass RangeValue {\n    /**\n    Compare this value with another value. Used when comparing\n    rangesets. The default implementation compares by identity.\n    Unless you are only creating a fixed number of unique instances\n    of your value type, it is a good idea to implement this\n    properly.\n    */\n    eq(other) { return this == other; }\n    /**\n    Create a [range](https://codemirror.net/6/docs/ref/#state.Range) with this value.\n    */\n    range(from, to = from) { return Range.create(from, to, this); }\n}\nRangeValue.prototype.startSide = RangeValue.prototype.endSide = 0;\nRangeValue.prototype.point = false;\nRangeValue.prototype.mapMode = MapMode.TrackDel;\n/**\nA range associates a value with a range of positions.\n*/\nclass Range {\n    constructor(\n    /**\n    The range's start position.\n    */\n    from, \n    /**\n    Its end position.\n    */\n    to, \n    /**\n    The value associated with this range.\n    */\n    value) {\n        this.from = from;\n        this.to = to;\n        this.value = value;\n    }\n    /**\n    @internal\n    */\n    static create(from, to, value) {\n        return new Range(from, to, value);\n    }\n}\nfunction cmpRange(a, b) {\n    return a.from - b.from || a.value.startSide - b.value.startSide;\n}\nclass Chunk {\n    constructor(from, to, value, \n    // Chunks are marked with the largest point that occurs\n    // in them (or -1 for no points), so that scans that are\n    // only interested in points (such as the\n    // heightmap-related logic) can skip range-only chunks.\n    maxPoint) {\n        this.from = from;\n        this.to = to;\n        this.value = value;\n        this.maxPoint = maxPoint;\n    }\n    get length() { return this.to[this.to.length - 1]; }\n    // Find the index of the given position and side. Use the ranges'\n    // `from` pos when `end == false`, `to` when `end == true`.\n    findIndex(pos, side, end, startAt = 0) {\n        let arr = end ? this.to : this.from;\n        for (let lo = startAt, hi = arr.length;;) {\n            if (lo == hi)\n                return lo;\n            let mid = (lo + hi) >> 1;\n            let diff = arr[mid] - pos || (end ? this.value[mid].endSide : this.value[mid].startSide) - side;\n            if (mid == lo)\n                return diff >= 0 ? lo : hi;\n            if (diff >= 0)\n                hi = mid;\n            else\n                lo = mid + 1;\n        }\n    }\n    between(offset, from, to, f) {\n        for (let i = this.findIndex(from, -1000000000 /* C.Far */, true), e = this.findIndex(to, 1000000000 /* C.Far */, false, i); i < e; i++)\n            if (f(this.from[i] + offset, this.to[i] + offset, this.value[i]) === false)\n                return false;\n    }\n    map(offset, changes) {\n        let value = [], from = [], to = [], newPos = -1, maxPoint = -1;\n        for (let i = 0; i < this.value.length; i++) {\n            let val = this.value[i], curFrom = this.from[i] + offset, curTo = this.to[i] + offset, newFrom, newTo;\n            if (curFrom == curTo) {\n                let mapped = changes.mapPos(curFrom, val.startSide, val.mapMode);\n                if (mapped == null)\n                    continue;\n                newFrom = newTo = mapped;\n                if (val.startSide != val.endSide) {\n                    newTo = changes.mapPos(curFrom, val.endSide);\n                    if (newTo < newFrom)\n                        continue;\n                }\n            }\n            else {\n                newFrom = changes.mapPos(curFrom, val.startSide);\n                newTo = changes.mapPos(curTo, val.endSide);\n                if (newFrom > newTo || newFrom == newTo && val.startSide > 0 && val.endSide <= 0)\n                    continue;\n            }\n            if ((newTo - newFrom || val.endSide - val.startSide) < 0)\n                continue;\n            if (newPos < 0)\n                newPos = newFrom;\n            if (val.point)\n                maxPoint = Math.max(maxPoint, newTo - newFrom);\n            value.push(val);\n            from.push(newFrom - newPos);\n            to.push(newTo - newPos);\n        }\n        return { mapped: value.length ? new Chunk(from, to, value, maxPoint) : null, pos: newPos };\n    }\n}\n/**\nA range set stores a collection of [ranges](https://codemirror.net/6/docs/ref/#state.Range) in a\nway that makes them efficient to [map](https://codemirror.net/6/docs/ref/#state.RangeSet.map) and\n[update](https://codemirror.net/6/docs/ref/#state.RangeSet.update). This is an immutable data\nstructure.\n*/\nclass RangeSet {\n    constructor(\n    /**\n    @internal\n    */\n    chunkPos, \n    /**\n    @internal\n    */\n    chunk, \n    /**\n    @internal\n    */\n    nextLayer, \n    /**\n    @internal\n    */\n    maxPoint) {\n        this.chunkPos = chunkPos;\n        this.chunk = chunk;\n        this.nextLayer = nextLayer;\n        this.maxPoint = maxPoint;\n    }\n    /**\n    @internal\n    */\n    static create(chunkPos, chunk, nextLayer, maxPoint) {\n        return new RangeSet(chunkPos, chunk, nextLayer, maxPoint);\n    }\n    /**\n    @internal\n    */\n    get length() {\n        let last = this.chunk.length - 1;\n        return last < 0 ? 0 : Math.max(this.chunkEnd(last), this.nextLayer.length);\n    }\n    /**\n    The number of ranges in the set.\n    */\n    get size() {\n        if (this.isEmpty)\n            return 0;\n        let size = this.nextLayer.size;\n        for (let chunk of this.chunk)\n            size += chunk.value.length;\n        return size;\n    }\n    /**\n    @internal\n    */\n    chunkEnd(index) {\n        return this.chunkPos[index] + this.chunk[index].length;\n    }\n    /**\n    Update the range set, optionally adding new ranges or filtering\n    out existing ones.\n    \n    (Note: The type parameter is just there as a kludge to work\n    around TypeScript variance issues that prevented `RangeSet<X>`\n    from being a subtype of `RangeSet<Y>` when `X` is a subtype of\n    `Y`.)\n    */\n    update(updateSpec) {\n        let { add = [], sort = false, filterFrom = 0, filterTo = this.length } = updateSpec;\n        let filter = updateSpec.filter;\n        if (add.length == 0 && !filter)\n            return this;\n        if (sort)\n            add = add.slice().sort(cmpRange);\n        if (this.isEmpty)\n            return add.length ? RangeSet.of(add) : this;\n        let cur = new LayerCursor(this, null, -1).goto(0), i = 0, spill = [];\n        let builder = new RangeSetBuilder();\n        while (cur.value || i < add.length) {\n            if (i < add.length && (cur.from - add[i].from || cur.startSide - add[i].value.startSide) >= 0) {\n                let range = add[i++];\n                if (!builder.addInner(range.from, range.to, range.value))\n                    spill.push(range);\n            }\n            else if (cur.rangeIndex == 1 && cur.chunkIndex < this.chunk.length &&\n                (i == add.length || this.chunkEnd(cur.chunkIndex) < add[i].from) &&\n                (!filter || filterFrom > this.chunkEnd(cur.chunkIndex) || filterTo < this.chunkPos[cur.chunkIndex]) &&\n                builder.addChunk(this.chunkPos[cur.chunkIndex], this.chunk[cur.chunkIndex])) {\n                cur.nextChunk();\n            }\n            else {\n                if (!filter || filterFrom > cur.to || filterTo < cur.from || filter(cur.from, cur.to, cur.value)) {\n                    if (!builder.addInner(cur.from, cur.to, cur.value))\n                        spill.push(Range.create(cur.from, cur.to, cur.value));\n                }\n                cur.next();\n            }\n        }\n        return builder.finishInner(this.nextLayer.isEmpty && !spill.length ? RangeSet.empty\n            : this.nextLayer.update({ add: spill, filter, filterFrom, filterTo }));\n    }\n    /**\n    Map this range set through a set of changes, return the new set.\n    */\n    map(changes) {\n        if (changes.empty || this.isEmpty)\n            return this;\n        let chunks = [], chunkPos = [], maxPoint = -1;\n        for (let i = 0; i < this.chunk.length; i++) {\n            let start = this.chunkPos[i], chunk = this.chunk[i];\n            let touch = changes.touchesRange(start, start + chunk.length);\n            if (touch === false) {\n                maxPoint = Math.max(maxPoint, chunk.maxPoint);\n                chunks.push(chunk);\n                chunkPos.push(changes.mapPos(start));\n            }\n            else if (touch === true) {\n                let { mapped, pos } = chunk.map(start, changes);\n                if (mapped) {\n                    maxPoint = Math.max(maxPoint, mapped.maxPoint);\n                    chunks.push(mapped);\n                    chunkPos.push(pos);\n                }\n            }\n        }\n        let next = this.nextLayer.map(changes);\n        return chunks.length == 0 ? next : new RangeSet(chunkPos, chunks, next || RangeSet.empty, maxPoint);\n    }\n    /**\n    Iterate over the ranges that touch the region `from` to `to`,\n    calling `f` for each. There is no guarantee that the ranges will\n    be reported in any specific order. When the callback returns\n    `false`, iteration stops.\n    */\n    between(from, to, f) {\n        if (this.isEmpty)\n            return;\n        for (let i = 0; i < this.chunk.length; i++) {\n            let start = this.chunkPos[i], chunk = this.chunk[i];\n            if (to >= start && from <= start + chunk.length &&\n                chunk.between(start, from - start, to - start, f) === false)\n                return;\n        }\n        this.nextLayer.between(from, to, f);\n    }\n    /**\n    Iterate over the ranges in this set, in order, including all\n    ranges that end at or after `from`.\n    */\n    iter(from = 0) {\n        return HeapCursor.from([this]).goto(from);\n    }\n    /**\n    @internal\n    */\n    get isEmpty() { return this.nextLayer == this; }\n    /**\n    Iterate over the ranges in a collection of sets, in order,\n    starting from `from`.\n    */\n    static iter(sets, from = 0) {\n        return HeapCursor.from(sets).goto(from);\n    }\n    /**\n    Iterate over two groups of sets, calling methods on `comparator`\n    to notify it of possible differences.\n    */\n    static compare(oldSets, newSets, \n    /**\n    This indicates how the underlying data changed between these\n    ranges, and is needed to synchronize the iteration.\n    */\n    textDiff, comparator, \n    /**\n    Can be used to ignore all non-point ranges, and points below\n    the given size. When -1, all ranges are compared.\n    */\n    minPointSize = -1) {\n        let a = oldSets.filter(set => set.maxPoint > 0 || !set.isEmpty && set.maxPoint >= minPointSize);\n        let b = newSets.filter(set => set.maxPoint > 0 || !set.isEmpty && set.maxPoint >= minPointSize);\n        let sharedChunks = findSharedChunks(a, b, textDiff);\n        let sideA = new SpanCursor(a, sharedChunks, minPointSize);\n        let sideB = new SpanCursor(b, sharedChunks, minPointSize);\n        textDiff.iterGaps((fromA, fromB, length) => compare(sideA, fromA, sideB, fromB, length, comparator));\n        if (textDiff.empty && textDiff.length == 0)\n            compare(sideA, 0, sideB, 0, 0, comparator);\n    }\n    /**\n    Compare the contents of two groups of range sets, returning true\n    if they are equivalent in the given range.\n    */\n    static eq(oldSets, newSets, from = 0, to) {\n        if (to == null)\n            to = 1000000000 /* C.Far */ - 1;\n        let a = oldSets.filter(set => !set.isEmpty && newSets.indexOf(set) < 0);\n        let b = newSets.filter(set => !set.isEmpty && oldSets.indexOf(set) < 0);\n        if (a.length != b.length)\n            return false;\n        if (!a.length)\n            return true;\n        let sharedChunks = findSharedChunks(a, b);\n        let sideA = new SpanCursor(a, sharedChunks, 0).goto(from), sideB = new SpanCursor(b, sharedChunks, 0).goto(from);\n        for (;;) {\n            if (sideA.to != sideB.to ||\n                !sameValues(sideA.active, sideB.active) ||\n                sideA.point && (!sideB.point || !sideA.point.eq(sideB.point)))\n                return false;\n            if (sideA.to > to)\n                return true;\n            sideA.next();\n            sideB.next();\n        }\n    }\n    /**\n    Iterate over a group of range sets at the same time, notifying\n    the iterator about the ranges covering every given piece of\n    content. Returns the open count (see\n    [`SpanIterator.span`](https://codemirror.net/6/docs/ref/#state.SpanIterator.span)) at the end\n    of the iteration.\n    */\n    static spans(sets, from, to, iterator, \n    /**\n    When given and greater than -1, only points of at least this\n    size are taken into account.\n    */\n    minPointSize = -1) {\n        let cursor = new SpanCursor(sets, null, minPointSize).goto(from), pos = from;\n        let openRanges = cursor.openStart;\n        for (;;) {\n            let curTo = Math.min(cursor.to, to);\n            if (cursor.point) {\n                let active = cursor.activeForPoint(cursor.to);\n                let openCount = cursor.pointFrom < from ? active.length + 1\n                    : cursor.point.startSide < 0 ? active.length\n                        : Math.min(active.length, openRanges);\n                iterator.point(pos, curTo, cursor.point, active, openCount, cursor.pointRank);\n                openRanges = Math.min(cursor.openEnd(curTo), active.length);\n            }\n            else if (curTo > pos) {\n                iterator.span(pos, curTo, cursor.active, openRanges);\n                openRanges = cursor.openEnd(curTo);\n            }\n            if (cursor.to > to)\n                return openRanges + (cursor.point && cursor.to > to ? 1 : 0);\n            pos = cursor.to;\n            cursor.next();\n        }\n    }\n    /**\n    Create a range set for the given range or array of ranges. By\n    default, this expects the ranges to be _sorted_ (by start\n    position and, if two start at the same position,\n    `value.startSide`). You can pass `true` as second argument to\n    cause the method to sort them.\n    */\n    static of(ranges, sort = false) {\n        let build = new RangeSetBuilder();\n        for (let range of ranges instanceof Range ? [ranges] : sort ? lazySort(ranges) : ranges)\n            build.add(range.from, range.to, range.value);\n        return build.finish();\n    }\n    /**\n    Join an array of range sets into a single set.\n    */\n    static join(sets) {\n        if (!sets.length)\n            return RangeSet.empty;\n        let result = sets[sets.length - 1];\n        for (let i = sets.length - 2; i >= 0; i--) {\n            for (let layer = sets[i]; layer != RangeSet.empty; layer = layer.nextLayer)\n                result = new RangeSet(layer.chunkPos, layer.chunk, result, Math.max(layer.maxPoint, result.maxPoint));\n        }\n        return result;\n    }\n}\n/**\nThe empty set of ranges.\n*/\nRangeSet.empty = /*@__PURE__*/new RangeSet([], [], null, -1);\nfunction lazySort(ranges) {\n    if (ranges.length > 1)\n        for (let prev = ranges[0], i = 1; i < ranges.length; i++) {\n            let cur = ranges[i];\n            if (cmpRange(prev, cur) > 0)\n                return ranges.slice().sort(cmpRange);\n            prev = cur;\n        }\n    return ranges;\n}\nRangeSet.empty.nextLayer = RangeSet.empty;\n/**\nA range set builder is a data structure that helps build up a\n[range set](https://codemirror.net/6/docs/ref/#state.RangeSet) directly, without first allocating\nan array of [`Range`](https://codemirror.net/6/docs/ref/#state.Range) objects.\n*/\nclass RangeSetBuilder {\n    finishChunk(newArrays) {\n        this.chunks.push(new Chunk(this.from, this.to, this.value, this.maxPoint));\n        this.chunkPos.push(this.chunkStart);\n        this.chunkStart = -1;\n        this.setMaxPoint = Math.max(this.setMaxPoint, this.maxPoint);\n        this.maxPoint = -1;\n        if (newArrays) {\n            this.from = [];\n            this.to = [];\n            this.value = [];\n        }\n    }\n    /**\n    Create an empty builder.\n    */\n    constructor() {\n        this.chunks = [];\n        this.chunkPos = [];\n        this.chunkStart = -1;\n        this.last = null;\n        this.lastFrom = -1000000000 /* C.Far */;\n        this.lastTo = -1000000000 /* C.Far */;\n        this.from = [];\n        this.to = [];\n        this.value = [];\n        this.maxPoint = -1;\n        this.setMaxPoint = -1;\n        this.nextLayer = null;\n    }\n    /**\n    Add a range. Ranges should be added in sorted (by `from` and\n    `value.startSide`) order.\n    */\n    add(from, to, value) {\n        if (!this.addInner(from, to, value))\n            (this.nextLayer || (this.nextLayer = new RangeSetBuilder)).add(from, to, value);\n    }\n    /**\n    @internal\n    */\n    addInner(from, to, value) {\n        let diff = from - this.lastTo || value.startSide - this.last.endSide;\n        if (diff <= 0 && (from - this.lastFrom || value.startSide - this.last.startSide) < 0)\n            throw new Error(\"Ranges must be added sorted by `from` position and `startSide`\");\n        if (diff < 0)\n            return false;\n        if (this.from.length == 250 /* C.ChunkSize */)\n            this.finishChunk(true);\n        if (this.chunkStart < 0)\n            this.chunkStart = from;\n        this.from.push(from - this.chunkStart);\n        this.to.push(to - this.chunkStart);\n        this.last = value;\n        this.lastFrom = from;\n        this.lastTo = to;\n        this.value.push(value);\n        if (value.point)\n            this.maxPoint = Math.max(this.maxPoint, to - from);\n        return true;\n    }\n    /**\n    @internal\n    */\n    addChunk(from, chunk) {\n        if ((from - this.lastTo || chunk.value[0].startSide - this.last.endSide) < 0)\n            return false;\n        if (this.from.length)\n            this.finishChunk(true);\n        this.setMaxPoint = Math.max(this.setMaxPoint, chunk.maxPoint);\n        this.chunks.push(chunk);\n        this.chunkPos.push(from);\n        let last = chunk.value.length - 1;\n        this.last = chunk.value[last];\n        this.lastFrom = chunk.from[last] + from;\n        this.lastTo = chunk.to[last] + from;\n        return true;\n    }\n    /**\n    Finish the range set. Returns the new set. The builder can't be\n    used anymore after this has been called.\n    */\n    finish() { return this.finishInner(RangeSet.empty); }\n    /**\n    @internal\n    */\n    finishInner(next) {\n        if (this.from.length)\n            this.finishChunk(false);\n        if (this.chunks.length == 0)\n            return next;\n        let result = RangeSet.create(this.chunkPos, this.chunks, this.nextLayer ? this.nextLayer.finishInner(next) : next, this.setMaxPoint);\n        this.from = null; // Make sure further `add` calls produce errors\n        return result;\n    }\n}\nfunction findSharedChunks(a, b, textDiff) {\n    let inA = new Map();\n    for (let set of a)\n        for (let i = 0; i < set.chunk.length; i++)\n            if (set.chunk[i].maxPoint <= 0)\n                inA.set(set.chunk[i], set.chunkPos[i]);\n    let shared = new Set();\n    for (let set of b)\n        for (let i = 0; i < set.chunk.length; i++) {\n            let known = inA.get(set.chunk[i]);\n            if (known != null && (textDiff ? textDiff.mapPos(known) : known) == set.chunkPos[i] &&\n                !(textDiff === null || textDiff === void 0 ? void 0 : textDiff.touchesRange(known, known + set.chunk[i].length)))\n                shared.add(set.chunk[i]);\n        }\n    return shared;\n}\nclass LayerCursor {\n    constructor(layer, skip, minPoint, rank = 0) {\n        this.layer = layer;\n        this.skip = skip;\n        this.minPoint = minPoint;\n        this.rank = rank;\n    }\n    get startSide() { return this.value ? this.value.startSide : 0; }\n    get endSide() { return this.value ? this.value.endSide : 0; }\n    goto(pos, side = -1000000000 /* C.Far */) {\n        this.chunkIndex = this.rangeIndex = 0;\n        this.gotoInner(pos, side, false);\n        return this;\n    }\n    gotoInner(pos, side, forward) {\n        while (this.chunkIndex < this.layer.chunk.length) {\n            let next = this.layer.chunk[this.chunkIndex];\n            if (!(this.skip && this.skip.has(next) ||\n                this.layer.chunkEnd(this.chunkIndex) < pos ||\n                next.maxPoint < this.minPoint))\n                break;\n            this.chunkIndex++;\n            forward = false;\n        }\n        if (this.chunkIndex < this.layer.chunk.length) {\n            let rangeIndex = this.layer.chunk[this.chunkIndex].findIndex(pos - this.layer.chunkPos[this.chunkIndex], side, true);\n            if (!forward || this.rangeIndex < rangeIndex)\n                this.setRangeIndex(rangeIndex);\n        }\n        this.next();\n    }\n    forward(pos, side) {\n        if ((this.to - pos || this.endSide - side) < 0)\n            this.gotoInner(pos, side, true);\n    }\n    next() {\n        for (;;) {\n            if (this.chunkIndex == this.layer.chunk.length) {\n                this.from = this.to = 1000000000 /* C.Far */;\n                this.value = null;\n                break;\n            }\n            else {\n                let chunkPos = this.layer.chunkPos[this.chunkIndex], chunk = this.layer.chunk[this.chunkIndex];\n                let from = chunkPos + chunk.from[this.rangeIndex];\n                this.from = from;\n                this.to = chunkPos + chunk.to[this.rangeIndex];\n                this.value = chunk.value[this.rangeIndex];\n                this.setRangeIndex(this.rangeIndex + 1);\n                if (this.minPoint < 0 || this.value.point && this.to - this.from >= this.minPoint)\n                    break;\n            }\n        }\n    }\n    setRangeIndex(index) {\n        if (index == this.layer.chunk[this.chunkIndex].value.length) {\n            this.chunkIndex++;\n            if (this.skip) {\n                while (this.chunkIndex < this.layer.chunk.length && this.skip.has(this.layer.chunk[this.chunkIndex]))\n                    this.chunkIndex++;\n            }\n            this.rangeIndex = 0;\n        }\n        else {\n            this.rangeIndex = index;\n        }\n    }\n    nextChunk() {\n        this.chunkIndex++;\n        this.rangeIndex = 0;\n        this.next();\n    }\n    compare(other) {\n        return this.from - other.from || this.startSide - other.startSide || this.rank - other.rank ||\n            this.to - other.to || this.endSide - other.endSide;\n    }\n}\nclass HeapCursor {\n    constructor(heap) {\n        this.heap = heap;\n    }\n    static from(sets, skip = null, minPoint = -1) {\n        let heap = [];\n        for (let i = 0; i < sets.length; i++) {\n            for (let cur = sets[i]; !cur.isEmpty; cur = cur.nextLayer) {\n                if (cur.maxPoint >= minPoint)\n                    heap.push(new LayerCursor(cur, skip, minPoint, i));\n            }\n        }\n        return heap.length == 1 ? heap[0] : new HeapCursor(heap);\n    }\n    get startSide() { return this.value ? this.value.startSide : 0; }\n    goto(pos, side = -1000000000 /* C.Far */) {\n        for (let cur of this.heap)\n            cur.goto(pos, side);\n        for (let i = this.heap.length >> 1; i >= 0; i--)\n            heapBubble(this.heap, i);\n        this.next();\n        return this;\n    }\n    forward(pos, side) {\n        for (let cur of this.heap)\n            cur.forward(pos, side);\n        for (let i = this.heap.length >> 1; i >= 0; i--)\n            heapBubble(this.heap, i);\n        if ((this.to - pos || this.value.endSide - side) < 0)\n            this.next();\n    }\n    next() {\n        if (this.heap.length == 0) {\n            this.from = this.to = 1000000000 /* C.Far */;\n            this.value = null;\n            this.rank = -1;\n        }\n        else {\n            let top = this.heap[0];\n            this.from = top.from;\n            this.to = top.to;\n            this.value = top.value;\n            this.rank = top.rank;\n            if (top.value)\n                top.next();\n            heapBubble(this.heap, 0);\n        }\n    }\n}\nfunction heapBubble(heap, index) {\n    for (let cur = heap[index];;) {\n        let childIndex = (index << 1) + 1;\n        if (childIndex >= heap.length)\n            break;\n        let child = heap[childIndex];\n        if (childIndex + 1 < heap.length && child.compare(heap[childIndex + 1]) >= 0) {\n            child = heap[childIndex + 1];\n            childIndex++;\n        }\n        if (cur.compare(child) < 0)\n            break;\n        heap[childIndex] = cur;\n        heap[index] = child;\n        index = childIndex;\n    }\n}\nclass SpanCursor {\n    constructor(sets, skip, minPoint) {\n        this.minPoint = minPoint;\n        this.active = [];\n        this.activeTo = [];\n        this.activeRank = [];\n        this.minActive = -1;\n        // A currently active point range, if any\n        this.point = null;\n        this.pointFrom = 0;\n        this.pointRank = 0;\n        this.to = -1000000000 /* C.Far */;\n        this.endSide = 0;\n        // The amount of open active ranges at the start of the iterator.\n        // Not including points.\n        this.openStart = -1;\n        this.cursor = HeapCursor.from(sets, skip, minPoint);\n    }\n    goto(pos, side = -1000000000 /* C.Far */) {\n        this.cursor.goto(pos, side);\n        this.active.length = this.activeTo.length = this.activeRank.length = 0;\n        this.minActive = -1;\n        this.to = pos;\n        this.endSide = side;\n        this.openStart = -1;\n        this.next();\n        return this;\n    }\n    forward(pos, side) {\n        while (this.minActive > -1 && (this.activeTo[this.minActive] - pos || this.active[this.minActive].endSide - side) < 0)\n            this.removeActive(this.minActive);\n        this.cursor.forward(pos, side);\n    }\n    removeActive(index) {\n        remove(this.active, index);\n        remove(this.activeTo, index);\n        remove(this.activeRank, index);\n        this.minActive = findMinIndex(this.active, this.activeTo);\n    }\n    addActive(trackOpen) {\n        let i = 0, { value, to, rank } = this.cursor;\n        // Organize active marks by rank first, then by size\n        while (i < this.activeRank.length && (rank - this.activeRank[i] || to - this.activeTo[i]) > 0)\n            i++;\n        insert(this.active, i, value);\n        insert(this.activeTo, i, to);\n        insert(this.activeRank, i, rank);\n        if (trackOpen)\n            insert(trackOpen, i, this.cursor.from);\n        this.minActive = findMinIndex(this.active, this.activeTo);\n    }\n    // After calling this, if `this.point` != null, the next range is a\n    // point. Otherwise, it's a regular range, covered by `this.active`.\n    next() {\n        let from = this.to, wasPoint = this.point;\n        this.point = null;\n        let trackOpen = this.openStart < 0 ? [] : null;\n        for (;;) {\n            let a = this.minActive;\n            if (a > -1 && (this.activeTo[a] - this.cursor.from || this.active[a].endSide - this.cursor.startSide) < 0) {\n                if (this.activeTo[a] > from) {\n                    this.to = this.activeTo[a];\n                    this.endSide = this.active[a].endSide;\n                    break;\n                }\n                this.removeActive(a);\n                if (trackOpen)\n                    remove(trackOpen, a);\n            }\n            else if (!this.cursor.value) {\n                this.to = this.endSide = 1000000000 /* C.Far */;\n                break;\n            }\n            else if (this.cursor.from > from) {\n                this.to = this.cursor.from;\n                this.endSide = this.cursor.startSide;\n                break;\n            }\n            else {\n                let nextVal = this.cursor.value;\n                if (!nextVal.point) { // Opening a range\n                    this.addActive(trackOpen);\n                    this.cursor.next();\n                }\n                else if (wasPoint && this.cursor.to == this.to && this.cursor.from < this.cursor.to) {\n                    // Ignore any non-empty points that end precisely at the end of the prev point\n                    this.cursor.next();\n                }\n                else { // New point\n                    this.point = nextVal;\n                    this.pointFrom = this.cursor.from;\n                    this.pointRank = this.cursor.rank;\n                    this.to = this.cursor.to;\n                    this.endSide = nextVal.endSide;\n                    this.cursor.next();\n                    this.forward(this.to, this.endSide);\n                    break;\n                }\n            }\n        }\n        if (trackOpen) {\n            this.openStart = 0;\n            for (let i = trackOpen.length - 1; i >= 0 && trackOpen[i] < from; i--)\n                this.openStart++;\n        }\n    }\n    activeForPoint(to) {\n        if (!this.active.length)\n            return this.active;\n        let active = [];\n        for (let i = this.active.length - 1; i >= 0; i--) {\n            if (this.activeRank[i] < this.pointRank)\n                break;\n            if (this.activeTo[i] > to || this.activeTo[i] == to && this.active[i].endSide >= this.point.endSide)\n                active.push(this.active[i]);\n        }\n        return active.reverse();\n    }\n    openEnd(to) {\n        let open = 0;\n        for (let i = this.activeTo.length - 1; i >= 0 && this.activeTo[i] > to; i--)\n            open++;\n        return open;\n    }\n}\nfunction compare(a, startA, b, startB, length, comparator) {\n    a.goto(startA);\n    b.goto(startB);\n    let endB = startB + length;\n    let pos = startB, dPos = startB - startA;\n    for (;;) {\n        let dEnd = (a.to + dPos) - b.to, diff = dEnd || a.endSide - b.endSide;\n        let end = diff < 0 ? a.to + dPos : b.to, clipEnd = Math.min(end, endB);\n        if (a.point || b.point) {\n            if (!(a.point && b.point && (a.point == b.point || a.point.eq(b.point)) &&\n                sameValues(a.activeForPoint(a.to), b.activeForPoint(b.to))))\n                comparator.comparePoint(pos, clipEnd, a.point, b.point);\n        }\n        else {\n            if (clipEnd > pos && !sameValues(a.active, b.active))\n                comparator.compareRange(pos, clipEnd, a.active, b.active);\n        }\n        if (end > endB)\n            break;\n        if ((dEnd || a.openEnd != b.openEnd) && comparator.boundChange)\n            comparator.boundChange(end);\n        pos = end;\n        if (diff <= 0)\n            a.next();\n        if (diff >= 0)\n            b.next();\n    }\n}\nfunction sameValues(a, b) {\n    if (a.length != b.length)\n        return false;\n    for (let i = 0; i < a.length; i++)\n        if (a[i] != b[i] && !a[i].eq(b[i]))\n            return false;\n    return true;\n}\nfunction remove(array, index) {\n    for (let i = index, e = array.length - 1; i < e; i++)\n        array[i] = array[i + 1];\n    array.pop();\n}\nfunction insert(array, index, value) {\n    for (let i = array.length - 1; i >= index; i--)\n        array[i + 1] = array[i];\n    array[index] = value;\n}\nfunction findMinIndex(value, array) {\n    let found = -1, foundPos = 1000000000 /* C.Far */;\n    for (let i = 0; i < array.length; i++)\n        if ((array[i] - foundPos || value[i].endSide - value[found].endSide) < 0) {\n            found = i;\n            foundPos = array[i];\n        }\n    return found;\n}\n\n/**\nCount the column position at the given offset into the string,\ntaking extending characters and tab size into account.\n*/\nfunction countColumn(string, tabSize, to = string.length) {\n    let n = 0;\n    for (let i = 0; i < to && i < string.length;) {\n        if (string.charCodeAt(i) == 9) {\n            n += tabSize - (n % tabSize);\n            i++;\n        }\n        else {\n            n++;\n            i = findClusterBreak(string, i);\n        }\n    }\n    return n;\n}\n/**\nFind the offset that corresponds to the given column position in a\nstring, taking extending characters and tab size into account. By\ndefault, the string length is returned when it is too short to\nreach the column. Pass `strict` true to make it return -1 in that\nsituation.\n*/\nfunction findColumn(string, col, tabSize, strict) {\n    for (let i = 0, n = 0;;) {\n        if (n >= col)\n            return i;\n        if (i == string.length)\n            break;\n        n += string.charCodeAt(i) == 9 ? tabSize - (n % tabSize) : 1;\n        i = findClusterBreak(string, i);\n    }\n    return strict === true ? -1 : string.length;\n}\n\nexport { Annotation, AnnotationType, ChangeDesc, ChangeSet, CharCategory, Compartment, EditorSelection, EditorState, Facet, Line, MapMode, Prec, Range, RangeSet, RangeSetBuilder, RangeValue, SelectionRange, StateEffect, StateEffectType, StateField, Text, Transaction, codePointAt, codePointSize, combineConfig, countColumn, findClusterBreak, findColumn, fromCodePoint };\n","import { EditorView } from '@codemirror/view';\nimport { HighlightStyle, syntaxHighlighting } from '@codemirror/language';\nimport { tags } from '@lezer/highlight';\n\n// Using https://github.com/one-dark/vscode-one-dark-theme/ as reference for the colors\nconst chalky = \"#e5c07b\", coral = \"#e06c75\", cyan = \"#56b6c2\", invalid = \"#ffffff\", ivory = \"#abb2bf\", stone = \"#7d8799\", // Brightened compared to original to increase contrast\nmalibu = \"#61afef\", sage = \"#98c379\", whiskey = \"#d19a66\", violet = \"#c678dd\", darkBackground = \"#21252b\", highlightBackground = \"#2c313a\", background = \"#282c34\", tooltipBackground = \"#353a42\", selection = \"#3E4451\", cursor = \"#528bff\";\n/**\nThe colors used in the theme, as CSS color strings.\n*/\nconst color = {\n    chalky,\n    coral,\n    cyan,\n    invalid,\n    ivory,\n    stone,\n    malibu,\n    sage,\n    whiskey,\n    violet,\n    darkBackground,\n    highlightBackground,\n    background,\n    tooltipBackground,\n    selection,\n    cursor\n};\n/**\nThe editor theme styles for One Dark.\n*/\nconst oneDarkTheme = /*@__PURE__*/EditorView.theme({\n    \"&\": {\n        color: ivory,\n        backgroundColor: background\n    },\n    \".cm-content\": {\n        caretColor: cursor\n    },\n    \".cm-cursor, .cm-dropCursor\": { borderLeftColor: cursor },\n    \"&.cm-focused > .cm-scroller > .cm-selectionLayer .cm-selectionBackground, .cm-selectionBackground, .cm-content ::selection\": { backgroundColor: selection },\n    \".cm-panels\": { backgroundColor: darkBackground, color: ivory },\n    \".cm-panels.cm-panels-top\": { borderBottom: \"2px solid black\" },\n    \".cm-panels.cm-panels-bottom\": { borderTop: \"2px solid black\" },\n    \".cm-searchMatch\": {\n        backgroundColor: \"#72a1ff59\",\n        outline: \"1px solid #457dff\"\n    },\n    \".cm-searchMatch.cm-searchMatch-selected\": {\n        backgroundColor: \"#6199ff2f\"\n    },\n    \".cm-activeLine\": { backgroundColor: \"#6699ff0b\" },\n    \".cm-selectionMatch\": { backgroundColor: \"#aafe661a\" },\n    \"&.cm-focused .cm-matchingBracket, &.cm-focused .cm-nonmatchingBracket\": {\n        backgroundColor: \"#bad0f847\"\n    },\n    \".cm-gutters\": {\n        backgroundColor: background,\n        color: stone,\n        border: \"none\"\n    },\n    \".cm-activeLineGutter\": {\n        backgroundColor: highlightBackground\n    },\n    \".cm-foldPlaceholder\": {\n        backgroundColor: \"transparent\",\n        border: \"none\",\n        color: \"#ddd\"\n    },\n    \".cm-tooltip\": {\n        border: \"none\",\n        backgroundColor: tooltipBackground\n    },\n    \".cm-tooltip .cm-tooltip-arrow:before\": {\n        borderTopColor: \"transparent\",\n        borderBottomColor: \"transparent\"\n    },\n    \".cm-tooltip .cm-tooltip-arrow:after\": {\n        borderTopColor: tooltipBackground,\n        borderBottomColor: tooltipBackground\n    },\n    \".cm-tooltip-autocomplete\": {\n        \"& > ul > li[aria-selected]\": {\n            backgroundColor: highlightBackground,\n            color: ivory\n        }\n    }\n}, { dark: true });\n/**\nThe highlighting style for code in the One Dark theme.\n*/\nconst oneDarkHighlightStyle = /*@__PURE__*/HighlightStyle.define([\n    { tag: tags.keyword,\n        color: violet },\n    { tag: [tags.name, tags.deleted, tags.character, tags.propertyName, tags.macroName],\n        color: coral },\n    { tag: [/*@__PURE__*/tags.function(tags.variableName), tags.labelName],\n        color: malibu },\n    { tag: [tags.color, /*@__PURE__*/tags.constant(tags.name), /*@__PURE__*/tags.standard(tags.name)],\n        color: whiskey },\n    { tag: [/*@__PURE__*/tags.definition(tags.name), tags.separator],\n        color: ivory },\n    { tag: [tags.typeName, tags.className, tags.number, tags.changed, tags.annotation, tags.modifier, tags.self, tags.namespace],\n        color: chalky },\n    { tag: [tags.operator, tags.operatorKeyword, tags.url, tags.escape, tags.regexp, tags.link, /*@__PURE__*/tags.special(tags.string)],\n        color: cyan },\n    { tag: [tags.meta, tags.comment],\n        color: stone },\n    { tag: tags.strong,\n        fontWeight: \"bold\" },\n    { tag: tags.emphasis,\n        fontStyle: \"italic\" },\n    { tag: tags.strikethrough,\n        textDecoration: \"line-through\" },\n    { tag: tags.link,\n        color: stone,\n        textDecoration: \"underline\" },\n    { tag: tags.heading,\n        fontWeight: \"bold\",\n        color: coral },\n    { tag: [tags.atom, tags.bool, /*@__PURE__*/tags.special(tags.variableName)],\n        color: whiskey },\n    { tag: [tags.processingInstruction, tags.string, tags.inserted],\n        color: sage },\n    { tag: tags.invalid,\n        color: invalid },\n]);\n/**\nExtension to enable the One Dark theme (both the editor theme and\nthe highlight style).\n*/\nconst oneDark = [oneDarkTheme, /*@__PURE__*/syntaxHighlighting(oneDarkHighlightStyle)];\n\nexport { color, oneDark, oneDarkHighlightStyle, oneDarkTheme };\n","import { Text, RangeSet, MapMode, RangeValue, findClusterBreak, EditorSelection, Facet, StateEffect, ChangeSet, findColumn, CharCategory, EditorState, Annotation, Transaction, Prec, codePointAt, codePointSize, combineConfig, StateField, RangeSetBuilder, countColumn } from '@codemirror/state';\nimport { StyleModule } from 'style-mod';\nimport { keyName, base, shift } from 'w3c-keyname';\n\nfunction getSelection(root) {\n    let target;\n    // Browsers differ on whether shadow roots have a getSelection\n    // method. If it exists, use that, otherwise, call it on the\n    // document.\n    if (root.nodeType == 11) { // Shadow root\n        target = root.getSelection ? root : root.ownerDocument;\n    }\n    else {\n        target = root;\n    }\n    return target.getSelection();\n}\nfunction contains(dom, node) {\n    return node ? dom == node || dom.contains(node.nodeType != 1 ? node.parentNode : node) : false;\n}\nfunction hasSelection(dom, selection) {\n    if (!selection.anchorNode)\n        return false;\n    try {\n        // Firefox will raise 'permission denied' errors when accessing\n        // properties of `sel.anchorNode` when it's in a generated CSS\n        // element.\n        return contains(dom, selection.anchorNode);\n    }\n    catch (_) {\n        return false;\n    }\n}\nfunction clientRectsFor(dom) {\n    if (dom.nodeType == 3)\n        return textRange(dom, 0, dom.nodeValue.length).getClientRects();\n    else if (dom.nodeType == 1)\n        return dom.getClientRects();\n    else\n        return [];\n}\n// Scans forward and backward through DOM positions equivalent to the\n// given one to see if the two are in the same place (i.e. after a\n// text node vs at the end of that text node)\nfunction isEquivalentPosition(node, off, targetNode, targetOff) {\n    return targetNode ? (scanFor(node, off, targetNode, targetOff, -1) ||\n        scanFor(node, off, targetNode, targetOff, 1)) : false;\n}\nfunction domIndex(node) {\n    for (var index = 0;; index++) {\n        node = node.previousSibling;\n        if (!node)\n            return index;\n    }\n}\nfunction isBlockElement(node) {\n    return node.nodeType == 1 && /^(DIV|P|LI|UL|OL|BLOCKQUOTE|DD|DT|H\\d|SECTION|PRE)$/.test(node.nodeName);\n}\nfunction scanFor(node, off, targetNode, targetOff, dir) {\n    for (;;) {\n        if (node == targetNode && off == targetOff)\n            return true;\n        if (off == (dir < 0 ? 0 : maxOffset(node))) {\n            if (node.nodeName == \"DIV\")\n                return false;\n            let parent = node.parentNode;\n            if (!parent || parent.nodeType != 1)\n                return false;\n            off = domIndex(node) + (dir < 0 ? 0 : 1);\n            node = parent;\n        }\n        else if (node.nodeType == 1) {\n            node = node.childNodes[off + (dir < 0 ? -1 : 0)];\n            if (node.nodeType == 1 && node.contentEditable == \"false\")\n                return false;\n            off = dir < 0 ? maxOffset(node) : 0;\n        }\n        else {\n            return false;\n        }\n    }\n}\nfunction maxOffset(node) {\n    return node.nodeType == 3 ? node.nodeValue.length : node.childNodes.length;\n}\nfunction flattenRect(rect, left) {\n    let x = left ? rect.left : rect.right;\n    return { left: x, right: x, top: rect.top, bottom: rect.bottom };\n}\nfunction windowRect(win) {\n    let vp = win.visualViewport;\n    if (vp)\n        return {\n            left: 0, right: vp.width,\n            top: 0, bottom: vp.height\n        };\n    return { left: 0, right: win.innerWidth,\n        top: 0, bottom: win.innerHeight };\n}\nfunction getScale(elt, rect) {\n    let scaleX = rect.width / elt.offsetWidth;\n    let scaleY = rect.height / elt.offsetHeight;\n    if (scaleX > 0.995 && scaleX < 1.005 || !isFinite(scaleX) || Math.abs(rect.width - elt.offsetWidth) < 1)\n        scaleX = 1;\n    if (scaleY > 0.995 && scaleY < 1.005 || !isFinite(scaleY) || Math.abs(rect.height - elt.offsetHeight) < 1)\n        scaleY = 1;\n    return { scaleX, scaleY };\n}\nfunction scrollRectIntoView(dom, rect, side, x, y, xMargin, yMargin, ltr) {\n    let doc = dom.ownerDocument, win = doc.defaultView || window;\n    for (let cur = dom, stop = false; cur && !stop;) {\n        if (cur.nodeType == 1) { // Element\n            let bounding, top = cur == doc.body;\n            let scaleX = 1, scaleY = 1;\n            if (top) {\n                bounding = windowRect(win);\n            }\n            else {\n                if (/^(fixed|sticky)$/.test(getComputedStyle(cur).position))\n                    stop = true;\n                if (cur.scrollHeight <= cur.clientHeight && cur.scrollWidth <= cur.clientWidth) {\n                    cur = cur.assignedSlot || cur.parentNode;\n                    continue;\n                }\n                let rect = cur.getBoundingClientRect();\n                ({ scaleX, scaleY } = getScale(cur, rect));\n                // Make sure scrollbar width isn't included in the rectangle\n                bounding = { left: rect.left, right: rect.left + cur.clientWidth * scaleX,\n                    top: rect.top, bottom: rect.top + cur.clientHeight * scaleY };\n            }\n            let moveX = 0, moveY = 0;\n            if (y == \"nearest\") {\n                if (rect.top < bounding.top) {\n                    moveY = -(bounding.top - rect.top + yMargin);\n                    if (side > 0 && rect.bottom > bounding.bottom + moveY)\n                        moveY = rect.bottom - bounding.bottom + moveY + yMargin;\n                }\n                else if (rect.bottom > bounding.bottom) {\n                    moveY = rect.bottom - bounding.bottom + yMargin;\n                    if (side < 0 && (rect.top - moveY) < bounding.top)\n                        moveY = -(bounding.top + moveY - rect.top + yMargin);\n                }\n            }\n            else {\n                let rectHeight = rect.bottom - rect.top, boundingHeight = bounding.bottom - bounding.top;\n                let targetTop = y == \"center\" && rectHeight <= boundingHeight ? rect.top + rectHeight / 2 - boundingHeight / 2 :\n                    y == \"start\" || y == \"center\" && side < 0 ? rect.top - yMargin :\n                        rect.bottom - boundingHeight + yMargin;\n                moveY = targetTop - bounding.top;\n            }\n            if (x == \"nearest\") {\n                if (rect.left < bounding.left) {\n                    moveX = -(bounding.left - rect.left + xMargin);\n                    if (side > 0 && rect.right > bounding.right + moveX)\n                        moveX = rect.right - bounding.right + moveX + xMargin;\n                }\n                else if (rect.right > bounding.right) {\n                    moveX = rect.right - bounding.right + xMargin;\n                    if (side < 0 && rect.left < bounding.left + moveX)\n                        moveX = -(bounding.left + moveX - rect.left + xMargin);\n                }\n            }\n            else {\n                let targetLeft = x == \"center\" ? rect.left + (rect.right - rect.left) / 2 - (bounding.right - bounding.left) / 2 :\n                    (x == \"start\") == ltr ? rect.left - xMargin :\n                        rect.right - (bounding.right - bounding.left) + xMargin;\n                moveX = targetLeft - bounding.left;\n            }\n            if (moveX || moveY) {\n                if (top) {\n                    win.scrollBy(moveX, moveY);\n                }\n                else {\n                    let movedX = 0, movedY = 0;\n                    if (moveY) {\n                        let start = cur.scrollTop;\n                        cur.scrollTop += moveY / scaleY;\n                        movedY = (cur.scrollTop - start) * scaleY;\n                    }\n                    if (moveX) {\n                        let start = cur.scrollLeft;\n                        cur.scrollLeft += moveX / scaleX;\n                        movedX = (cur.scrollLeft - start) * scaleX;\n                    }\n                    rect = { left: rect.left - movedX, top: rect.top - movedY,\n                        right: rect.right - movedX, bottom: rect.bottom - movedY };\n                    if (movedX && Math.abs(movedX - moveX) < 1)\n                        x = \"nearest\";\n                    if (movedY && Math.abs(movedY - moveY) < 1)\n                        y = \"nearest\";\n                }\n            }\n            if (top)\n                break;\n            cur = cur.assignedSlot || cur.parentNode;\n        }\n        else if (cur.nodeType == 11) { // A shadow root\n            cur = cur.host;\n        }\n        else {\n            break;\n        }\n    }\n}\nfunction scrollableParents(dom) {\n    let doc = dom.ownerDocument, x, y;\n    for (let cur = dom.parentNode; cur;) {\n        if (cur == doc.body || (x && y)) {\n            break;\n        }\n        else if (cur.nodeType == 1) {\n            if (!y && cur.scrollHeight > cur.clientHeight)\n                y = cur;\n            if (!x && cur.scrollWidth > cur.clientWidth)\n                x = cur;\n            cur = cur.assignedSlot || cur.parentNode;\n        }\n        else if (cur.nodeType == 11) {\n            cur = cur.host;\n        }\n        else {\n            break;\n        }\n    }\n    return { x, y };\n}\nclass DOMSelectionState {\n    constructor() {\n        this.anchorNode = null;\n        this.anchorOffset = 0;\n        this.focusNode = null;\n        this.focusOffset = 0;\n    }\n    eq(domSel) {\n        return this.anchorNode == domSel.anchorNode && this.anchorOffset == domSel.anchorOffset &&\n            this.focusNode == domSel.focusNode && this.focusOffset == domSel.focusOffset;\n    }\n    setRange(range) {\n        let { anchorNode, focusNode } = range;\n        // Clip offsets to node size to avoid crashes when Safari reports bogus offsets (#1152)\n        this.set(anchorNode, Math.min(range.anchorOffset, anchorNode ? maxOffset(anchorNode) : 0), focusNode, Math.min(range.focusOffset, focusNode ? maxOffset(focusNode) : 0));\n    }\n    set(anchorNode, anchorOffset, focusNode, focusOffset) {\n        this.anchorNode = anchorNode;\n        this.anchorOffset = anchorOffset;\n        this.focusNode = focusNode;\n        this.focusOffset = focusOffset;\n    }\n}\nlet preventScrollSupported = null;\n// Feature-detects support for .focus({preventScroll: true}), and uses\n// a fallback kludge when not supported.\nfunction focusPreventScroll(dom) {\n    if (dom.setActive)\n        return dom.setActive(); // in IE\n    if (preventScrollSupported)\n        return dom.focus(preventScrollSupported);\n    let stack = [];\n    for (let cur = dom; cur; cur = cur.parentNode) {\n        stack.push(cur, cur.scrollTop, cur.scrollLeft);\n        if (cur == cur.ownerDocument)\n            break;\n    }\n    dom.focus(preventScrollSupported == null ? {\n        get preventScroll() {\n            preventScrollSupported = { preventScroll: true };\n            return true;\n        }\n    } : undefined);\n    if (!preventScrollSupported) {\n        preventScrollSupported = false;\n        for (let i = 0; i < stack.length;) {\n            let elt = stack[i++], top = stack[i++], left = stack[i++];\n            if (elt.scrollTop != top)\n                elt.scrollTop = top;\n            if (elt.scrollLeft != left)\n                elt.scrollLeft = left;\n        }\n    }\n}\nlet scratchRange;\nfunction textRange(node, from, to = from) {\n    let range = scratchRange || (scratchRange = document.createRange());\n    range.setEnd(node, to);\n    range.setStart(node, from);\n    return range;\n}\nfunction dispatchKey(elt, name, code, mods) {\n    let options = { key: name, code: name, keyCode: code, which: code, cancelable: true };\n    if (mods)\n        ({ altKey: options.altKey, ctrlKey: options.ctrlKey, shiftKey: options.shiftKey, metaKey: options.metaKey } = mods);\n    let down = new KeyboardEvent(\"keydown\", options);\n    down.synthetic = true;\n    elt.dispatchEvent(down);\n    let up = new KeyboardEvent(\"keyup\", options);\n    up.synthetic = true;\n    elt.dispatchEvent(up);\n    return down.defaultPrevented || up.defaultPrevented;\n}\nfunction getRoot(node) {\n    while (node) {\n        if (node && (node.nodeType == 9 || node.nodeType == 11 && node.host))\n            return node;\n        node = node.assignedSlot || node.parentNode;\n    }\n    return null;\n}\nfunction clearAttributes(node) {\n    while (node.attributes.length)\n        node.removeAttributeNode(node.attributes[0]);\n}\nfunction atElementStart(doc, selection) {\n    let node = selection.focusNode, offset = selection.focusOffset;\n    if (!node || selection.anchorNode != node || selection.anchorOffset != offset)\n        return false;\n    // Safari can report bogus offsets (#1152)\n    offset = Math.min(offset, maxOffset(node));\n    for (;;) {\n        if (offset) {\n            if (node.nodeType != 1)\n                return false;\n            let prev = node.childNodes[offset - 1];\n            if (prev.contentEditable == \"false\")\n                offset--;\n            else {\n                node = prev;\n                offset = maxOffset(node);\n            }\n        }\n        else if (node == doc) {\n            return true;\n        }\n        else {\n            offset = domIndex(node);\n            node = node.parentNode;\n        }\n    }\n}\nfunction isScrolledToBottom(elt) {\n    return elt.scrollTop > Math.max(1, elt.scrollHeight - elt.clientHeight - 4);\n}\nfunction textNodeBefore(startNode, startOffset) {\n    for (let node = startNode, offset = startOffset;;) {\n        if (node.nodeType == 3 && offset > 0) {\n            return { node: node, offset: offset };\n        }\n        else if (node.nodeType == 1 && offset > 0) {\n            if (node.contentEditable == \"false\")\n                return null;\n            node = node.childNodes[offset - 1];\n            offset = maxOffset(node);\n        }\n        else if (node.parentNode && !isBlockElement(node)) {\n            offset = domIndex(node);\n            node = node.parentNode;\n        }\n        else {\n            return null;\n        }\n    }\n}\nfunction textNodeAfter(startNode, startOffset) {\n    for (let node = startNode, offset = startOffset;;) {\n        if (node.nodeType == 3 && offset < node.nodeValue.length) {\n            return { node: node, offset: offset };\n        }\n        else if (node.nodeType == 1 && offset < node.childNodes.length) {\n            if (node.contentEditable == \"false\")\n                return null;\n            node = node.childNodes[offset];\n            offset = 0;\n        }\n        else if (node.parentNode && !isBlockElement(node)) {\n            offset = domIndex(node) + 1;\n            node = node.parentNode;\n        }\n        else {\n            return null;\n        }\n    }\n}\n\nclass DOMPos {\n    constructor(node, offset, precise = true) {\n        this.node = node;\n        this.offset = offset;\n        this.precise = precise;\n    }\n    static before(dom, precise) { return new DOMPos(dom.parentNode, domIndex(dom), precise); }\n    static after(dom, precise) { return new DOMPos(dom.parentNode, domIndex(dom) + 1, precise); }\n}\nconst noChildren = [];\nclass ContentView {\n    constructor() {\n        this.parent = null;\n        this.dom = null;\n        this.flags = 2 /* ViewFlag.NodeDirty */;\n    }\n    get overrideDOMText() { return null; }\n    get posAtStart() {\n        return this.parent ? this.parent.posBefore(this) : 0;\n    }\n    get posAtEnd() {\n        return this.posAtStart + this.length;\n    }\n    posBefore(view) {\n        let pos = this.posAtStart;\n        for (let child of this.children) {\n            if (child == view)\n                return pos;\n            pos += child.length + child.breakAfter;\n        }\n        throw new RangeError(\"Invalid child in posBefore\");\n    }\n    posAfter(view) {\n        return this.posBefore(view) + view.length;\n    }\n    sync(view, track) {\n        if (this.flags & 2 /* ViewFlag.NodeDirty */) {\n            let parent = this.dom;\n            let prev = null, next;\n            for (let child of this.children) {\n                if (child.flags & 7 /* ViewFlag.Dirty */) {\n                    if (!child.dom && (next = prev ? prev.nextSibling : parent.firstChild)) {\n                        let contentView = ContentView.get(next);\n                        if (!contentView || !contentView.parent && contentView.canReuseDOM(child))\n                            child.reuseDOM(next);\n                    }\n                    child.sync(view, track);\n                    child.flags &= ~7 /* ViewFlag.Dirty */;\n                }\n                next = prev ? prev.nextSibling : parent.firstChild;\n                if (track && !track.written && track.node == parent && next != child.dom)\n                    track.written = true;\n                if (child.dom.parentNode == parent) {\n                    while (next && next != child.dom)\n                        next = rm$1(next);\n                }\n                else {\n                    parent.insertBefore(child.dom, next);\n                }\n                prev = child.dom;\n            }\n            next = prev ? prev.nextSibling : parent.firstChild;\n            if (next && track && track.node == parent)\n                track.written = true;\n            while (next)\n                next = rm$1(next);\n        }\n        else if (this.flags & 1 /* ViewFlag.ChildDirty */) {\n            for (let child of this.children)\n                if (child.flags & 7 /* ViewFlag.Dirty */) {\n                    child.sync(view, track);\n                    child.flags &= ~7 /* ViewFlag.Dirty */;\n                }\n        }\n    }\n    reuseDOM(_dom) { }\n    localPosFromDOM(node, offset) {\n        let after;\n        if (node == this.dom) {\n            after = this.dom.childNodes[offset];\n        }\n        else {\n            let bias = maxOffset(node) == 0 ? 0 : offset == 0 ? -1 : 1;\n            for (;;) {\n                let parent = node.parentNode;\n                if (parent == this.dom)\n                    break;\n                if (bias == 0 && parent.firstChild != parent.lastChild) {\n                    if (node == parent.firstChild)\n                        bias = -1;\n                    else\n                        bias = 1;\n                }\n                node = parent;\n            }\n            if (bias < 0)\n                after = node;\n            else\n                after = node.nextSibling;\n        }\n        if (after == this.dom.firstChild)\n            return 0;\n        while (after && !ContentView.get(after))\n            after = after.nextSibling;\n        if (!after)\n            return this.length;\n        for (let i = 0, pos = 0;; i++) {\n            let child = this.children[i];\n            if (child.dom == after)\n                return pos;\n            pos += child.length + child.breakAfter;\n        }\n    }\n    domBoundsAround(from, to, offset = 0) {\n        let fromI = -1, fromStart = -1, toI = -1, toEnd = -1;\n        for (let i = 0, pos = offset, prevEnd = offset; i < this.children.length; i++) {\n            let child = this.children[i], end = pos + child.length;\n            if (pos < from && end > to)\n                return child.domBoundsAround(from, to, pos);\n            if (end >= from && fromI == -1) {\n                fromI = i;\n                fromStart = pos;\n            }\n            if (pos > to && child.dom.parentNode == this.dom) {\n                toI = i;\n                toEnd = prevEnd;\n                break;\n            }\n            prevEnd = end;\n            pos = end + child.breakAfter;\n        }\n        return { from: fromStart, to: toEnd < 0 ? offset + this.length : toEnd,\n            startDOM: (fromI ? this.children[fromI - 1].dom.nextSibling : null) || this.dom.firstChild,\n            endDOM: toI < this.children.length && toI >= 0 ? this.children[toI].dom : null };\n    }\n    markDirty(andParent = false) {\n        this.flags |= 2 /* ViewFlag.NodeDirty */;\n        this.markParentsDirty(andParent);\n    }\n    markParentsDirty(childList) {\n        for (let parent = this.parent; parent; parent = parent.parent) {\n            if (childList)\n                parent.flags |= 2 /* ViewFlag.NodeDirty */;\n            if (parent.flags & 1 /* ViewFlag.ChildDirty */)\n                return;\n            parent.flags |= 1 /* ViewFlag.ChildDirty */;\n            childList = false;\n        }\n    }\n    setParent(parent) {\n        if (this.parent != parent) {\n            this.parent = parent;\n            if (this.flags & 7 /* ViewFlag.Dirty */)\n                this.markParentsDirty(true);\n        }\n    }\n    setDOM(dom) {\n        if (this.dom == dom)\n            return;\n        if (this.dom)\n            this.dom.cmView = null;\n        this.dom = dom;\n        dom.cmView = this;\n    }\n    get rootView() {\n        for (let v = this;;) {\n            let parent = v.parent;\n            if (!parent)\n                return v;\n            v = parent;\n        }\n    }\n    replaceChildren(from, to, children = noChildren) {\n        this.markDirty();\n        for (let i = from; i < to; i++) {\n            let child = this.children[i];\n            if (child.parent == this && children.indexOf(child) < 0)\n                child.destroy();\n        }\n        if (children.length < 250)\n            this.children.splice(from, to - from, ...children);\n        else\n            this.children = [].concat(this.children.slice(0, from), children, this.children.slice(to));\n        for (let i = 0; i < children.length; i++)\n            children[i].setParent(this);\n    }\n    ignoreMutation(_rec) { return false; }\n    ignoreEvent(_event) { return false; }\n    childCursor(pos = this.length) {\n        return new ChildCursor(this.children, pos, this.children.length);\n    }\n    childPos(pos, bias = 1) {\n        return this.childCursor().findPos(pos, bias);\n    }\n    toString() {\n        let name = this.constructor.name.replace(\"View\", \"\");\n        return name + (this.children.length ? \"(\" + this.children.join() + \")\" :\n            this.length ? \"[\" + (name == \"Text\" ? this.text : this.length) + \"]\" : \"\") +\n            (this.breakAfter ? \"#\" : \"\");\n    }\n    static get(node) { return node.cmView; }\n    get isEditable() { return true; }\n    get isWidget() { return false; }\n    get isHidden() { return false; }\n    merge(from, to, source, hasStart, openStart, openEnd) {\n        return false;\n    }\n    become(other) { return false; }\n    canReuseDOM(other) {\n        return other.constructor == this.constructor && !((this.flags | other.flags) & 8 /* ViewFlag.Composition */);\n    }\n    // When this is a zero-length view with a side, this should return a\n    // number <= 0 to indicate it is before its position, or a\n    // number > 0 when after its position.\n    getSide() { return 0; }\n    destroy() {\n        for (let child of this.children)\n            if (child.parent == this)\n                child.destroy();\n        this.parent = null;\n    }\n}\nContentView.prototype.breakAfter = 0;\n// Remove a DOM node and return its next sibling.\nfunction rm$1(dom) {\n    let next = dom.nextSibling;\n    dom.parentNode.removeChild(dom);\n    return next;\n}\nclass ChildCursor {\n    constructor(children, pos, i) {\n        this.children = children;\n        this.pos = pos;\n        this.i = i;\n        this.off = 0;\n    }\n    findPos(pos, bias = 1) {\n        for (;;) {\n            if (pos > this.pos || pos == this.pos &&\n                (bias > 0 || this.i == 0 || this.children[this.i - 1].breakAfter)) {\n                this.off = pos - this.pos;\n                return this;\n            }\n            let next = this.children[--this.i];\n            this.pos -= next.length + next.breakAfter;\n        }\n    }\n}\nfunction replaceRange(parent, fromI, fromOff, toI, toOff, insert, breakAtStart, openStart, openEnd) {\n    let { children } = parent;\n    let before = children.length ? children[fromI] : null;\n    let last = insert.length ? insert[insert.length - 1] : null;\n    let breakAtEnd = last ? last.breakAfter : breakAtStart;\n    // Change within a single child\n    if (fromI == toI && before && !breakAtStart && !breakAtEnd && insert.length < 2 &&\n        before.merge(fromOff, toOff, insert.length ? last : null, fromOff == 0, openStart, openEnd))\n        return;\n    if (toI < children.length) {\n        let after = children[toI];\n        // Make sure the end of the child after the update is preserved in `after`\n        if (after && (toOff < after.length || after.breakAfter && (last === null || last === void 0 ? void 0 : last.breakAfter))) {\n            // If we're splitting a child, separate part of it to avoid that\n            // being mangled when updating the child before the update.\n            if (fromI == toI) {\n                after = after.split(toOff);\n                toOff = 0;\n            }\n            // If the element after the replacement should be merged with\n            // the last replacing element, update `content`\n            if (!breakAtEnd && last && after.merge(0, toOff, last, true, 0, openEnd)) {\n                insert[insert.length - 1] = after;\n            }\n            else {\n                // Remove the start of the after element, if necessary, and\n                // add it to `content`.\n                if (toOff || after.children.length && !after.children[0].length)\n                    after.merge(0, toOff, null, false, 0, openEnd);\n                insert.push(after);\n            }\n        }\n        else if (after === null || after === void 0 ? void 0 : after.breakAfter) {\n            // The element at `toI` is entirely covered by this range.\n            // Preserve its line break, if any.\n            if (last)\n                last.breakAfter = 1;\n            else\n                breakAtStart = 1;\n        }\n        // Since we've handled the next element from the current elements\n        // now, make sure `toI` points after that.\n        toI++;\n    }\n    if (before) {\n        before.breakAfter = breakAtStart;\n        if (fromOff > 0) {\n            if (!breakAtStart && insert.length && before.merge(fromOff, before.length, insert[0], false, openStart, 0)) {\n                before.breakAfter = insert.shift().breakAfter;\n            }\n            else if (fromOff < before.length || before.children.length && before.children[before.children.length - 1].length == 0) {\n                before.merge(fromOff, before.length, null, false, openStart, 0);\n            }\n            fromI++;\n        }\n    }\n    // Try to merge widgets on the boundaries of the replacement\n    while (fromI < toI && insert.length) {\n        if (children[toI - 1].become(insert[insert.length - 1])) {\n            toI--;\n            insert.pop();\n            openEnd = insert.length ? 0 : openStart;\n        }\n        else if (children[fromI].become(insert[0])) {\n            fromI++;\n            insert.shift();\n            openStart = insert.length ? 0 : openEnd;\n        }\n        else {\n            break;\n        }\n    }\n    if (!insert.length && fromI && toI < children.length && !children[fromI - 1].breakAfter &&\n        children[toI].merge(0, 0, children[fromI - 1], false, openStart, openEnd))\n        fromI--;\n    if (fromI < toI || insert.length)\n        parent.replaceChildren(fromI, toI, insert);\n}\nfunction mergeChildrenInto(parent, from, to, insert, openStart, openEnd) {\n    let cur = parent.childCursor();\n    let { i: toI, off: toOff } = cur.findPos(to, 1);\n    let { i: fromI, off: fromOff } = cur.findPos(from, -1);\n    let dLen = from - to;\n    for (let view of insert)\n        dLen += view.length;\n    parent.length += dLen;\n    replaceRange(parent, fromI, fromOff, toI, toOff, insert, 0, openStart, openEnd);\n}\n\nlet nav = typeof navigator != \"undefined\" ? navigator : { userAgent: \"\", vendor: \"\", platform: \"\" };\nlet doc = typeof document != \"undefined\" ? document : { documentElement: { style: {} } };\nconst ie_edge = /*@__PURE__*//Edge\\/(\\d+)/.exec(nav.userAgent);\nconst ie_upto10 = /*@__PURE__*//MSIE \\d/.test(nav.userAgent);\nconst ie_11up = /*@__PURE__*//Trident\\/(?:[7-9]|\\d{2,})\\..*rv:(\\d+)/.exec(nav.userAgent);\nconst ie = !!(ie_upto10 || ie_11up || ie_edge);\nconst gecko = !ie && /*@__PURE__*//gecko\\/(\\d+)/i.test(nav.userAgent);\nconst chrome = !ie && /*@__PURE__*//Chrome\\/(\\d+)/.exec(nav.userAgent);\nconst webkit = \"webkitFontSmoothing\" in doc.documentElement.style;\nconst safari = !ie && /*@__PURE__*//Apple Computer/.test(nav.vendor);\nconst ios = safari && (/*@__PURE__*//Mobile\\/\\w+/.test(nav.userAgent) || nav.maxTouchPoints > 2);\nvar browser = {\n    mac: ios || /*@__PURE__*//Mac/.test(nav.platform),\n    windows: /*@__PURE__*//Win/.test(nav.platform),\n    linux: /*@__PURE__*//Linux|X11/.test(nav.platform),\n    ie,\n    ie_version: ie_upto10 ? doc.documentMode || 6 : ie_11up ? +ie_11up[1] : ie_edge ? +ie_edge[1] : 0,\n    gecko,\n    gecko_version: gecko ? +(/*@__PURE__*//Firefox\\/(\\d+)/.exec(nav.userAgent) || [0, 0])[1] : 0,\n    chrome: !!chrome,\n    chrome_version: chrome ? +chrome[1] : 0,\n    ios,\n    android: /*@__PURE__*//Android\\b/.test(nav.userAgent),\n    webkit,\n    safari,\n    webkit_version: webkit ? +(/*@__PURE__*//\\bAppleWebKit\\/(\\d+)/.exec(nav.userAgent) || [0, 0])[1] : 0,\n    tabSize: doc.documentElement.style.tabSize != null ? \"tab-size\" : \"-moz-tab-size\"\n};\n\nconst MaxJoinLen = 256;\nclass TextView extends ContentView {\n    constructor(text) {\n        super();\n        this.text = text;\n    }\n    get length() { return this.text.length; }\n    createDOM(textDOM) {\n        this.setDOM(textDOM || document.createTextNode(this.text));\n    }\n    sync(view, track) {\n        if (!this.dom)\n            this.createDOM();\n        if (this.dom.nodeValue != this.text) {\n            if (track && track.node == this.dom)\n                track.written = true;\n            this.dom.nodeValue = this.text;\n        }\n    }\n    reuseDOM(dom) {\n        if (dom.nodeType == 3)\n            this.createDOM(dom);\n    }\n    merge(from, to, source) {\n        if ((this.flags & 8 /* ViewFlag.Composition */) ||\n            source && (!(source instanceof TextView) ||\n                this.length - (to - from) + source.length > MaxJoinLen ||\n                (source.flags & 8 /* ViewFlag.Composition */)))\n            return false;\n        this.text = this.text.slice(0, from) + (source ? source.text : \"\") + this.text.slice(to);\n        this.markDirty();\n        return true;\n    }\n    split(from) {\n        let result = new TextView(this.text.slice(from));\n        this.text = this.text.slice(0, from);\n        this.markDirty();\n        result.flags |= this.flags & 8 /* ViewFlag.Composition */;\n        return result;\n    }\n    localPosFromDOM(node, offset) {\n        return node == this.dom ? offset : offset ? this.text.length : 0;\n    }\n    domAtPos(pos) { return new DOMPos(this.dom, pos); }\n    domBoundsAround(_from, _to, offset) {\n        return { from: offset, to: offset + this.length, startDOM: this.dom, endDOM: this.dom.nextSibling };\n    }\n    coordsAt(pos, side) {\n        return textCoords(this.dom, pos, side);\n    }\n}\nclass MarkView extends ContentView {\n    constructor(mark, children = [], length = 0) {\n        super();\n        this.mark = mark;\n        this.children = children;\n        this.length = length;\n        for (let ch of children)\n            ch.setParent(this);\n    }\n    setAttrs(dom) {\n        clearAttributes(dom);\n        if (this.mark.class)\n            dom.className = this.mark.class;\n        if (this.mark.attrs)\n            for (let name in this.mark.attrs)\n                dom.setAttribute(name, this.mark.attrs[name]);\n        return dom;\n    }\n    canReuseDOM(other) {\n        return super.canReuseDOM(other) && !((this.flags | other.flags) & 8 /* ViewFlag.Composition */);\n    }\n    reuseDOM(node) {\n        if (node.nodeName == this.mark.tagName.toUpperCase()) {\n            this.setDOM(node);\n            this.flags |= 4 /* ViewFlag.AttrsDirty */ | 2 /* ViewFlag.NodeDirty */;\n        }\n    }\n    sync(view, track) {\n        if (!this.dom)\n            this.setDOM(this.setAttrs(document.createElement(this.mark.tagName)));\n        else if (this.flags & 4 /* ViewFlag.AttrsDirty */)\n            this.setAttrs(this.dom);\n        super.sync(view, track);\n    }\n    merge(from, to, source, _hasStart, openStart, openEnd) {\n        if (source && (!(source instanceof MarkView && source.mark.eq(this.mark)) ||\n            (from && openStart <= 0) || (to < this.length && openEnd <= 0)))\n            return false;\n        mergeChildrenInto(this, from, to, source ? source.children.slice() : [], openStart - 1, openEnd - 1);\n        this.markDirty();\n        return true;\n    }\n    split(from) {\n        let result = [], off = 0, detachFrom = -1, i = 0;\n        for (let elt of this.children) {\n            let end = off + elt.length;\n            if (end > from)\n                result.push(off < from ? elt.split(from - off) : elt);\n            if (detachFrom < 0 && off >= from)\n                detachFrom = i;\n            off = end;\n            i++;\n        }\n        let length = this.length - from;\n        this.length = from;\n        if (detachFrom > -1) {\n            this.children.length = detachFrom;\n            this.markDirty();\n        }\n        return new MarkView(this.mark, result, length);\n    }\n    domAtPos(pos) {\n        return inlineDOMAtPos(this, pos);\n    }\n    coordsAt(pos, side) {\n        return coordsInChildren(this, pos, side);\n    }\n}\nfunction textCoords(text, pos, side) {\n    let length = text.nodeValue.length;\n    if (pos > length)\n        pos = length;\n    let from = pos, to = pos, flatten = 0;\n    if (pos == 0 && side < 0 || pos == length && side >= 0) {\n        if (!(browser.chrome || browser.gecko)) { // These browsers reliably return valid rectangles for empty ranges\n            if (pos) {\n                from--;\n                flatten = 1;\n            } // FIXME this is wrong in RTL text\n            else if (to < length) {\n                to++;\n                flatten = -1;\n            }\n        }\n    }\n    else {\n        if (side < 0)\n            from--;\n        else if (to < length)\n            to++;\n    }\n    let rects = textRange(text, from, to).getClientRects();\n    if (!rects.length)\n        return null;\n    let rect = rects[(flatten ? flatten < 0 : side >= 0) ? 0 : rects.length - 1];\n    if (browser.safari && !flatten && rect.width == 0)\n        rect = Array.prototype.find.call(rects, r => r.width) || rect;\n    return flatten ? flattenRect(rect, flatten < 0) : rect || null;\n}\n// Also used for collapsed ranges that don't have a placeholder widget!\nclass WidgetView extends ContentView {\n    static create(widget, length, side) {\n        return new WidgetView(widget, length, side);\n    }\n    constructor(widget, length, side) {\n        super();\n        this.widget = widget;\n        this.length = length;\n        this.side = side;\n        this.prevWidget = null;\n    }\n    split(from) {\n        let result = WidgetView.create(this.widget, this.length - from, this.side);\n        this.length -= from;\n        return result;\n    }\n    sync(view) {\n        if (!this.dom || !this.widget.updateDOM(this.dom, view)) {\n            if (this.dom && this.prevWidget)\n                this.prevWidget.destroy(this.dom);\n            this.prevWidget = null;\n            this.setDOM(this.widget.toDOM(view));\n            if (!this.widget.editable)\n                this.dom.contentEditable = \"false\";\n        }\n    }\n    getSide() { return this.side; }\n    merge(from, to, source, hasStart, openStart, openEnd) {\n        if (source && (!(source instanceof WidgetView) || !this.widget.compare(source.widget) ||\n            from > 0 && openStart <= 0 || to < this.length && openEnd <= 0))\n            return false;\n        this.length = from + (source ? source.length : 0) + (this.length - to);\n        return true;\n    }\n    become(other) {\n        if (other instanceof WidgetView && other.side == this.side &&\n            this.widget.constructor == other.widget.constructor) {\n            if (!this.widget.compare(other.widget))\n                this.markDirty(true);\n            if (this.dom && !this.prevWidget)\n                this.prevWidget = this.widget;\n            this.widget = other.widget;\n            this.length = other.length;\n            return true;\n        }\n        return false;\n    }\n    ignoreMutation() { return true; }\n    ignoreEvent(event) { return this.widget.ignoreEvent(event); }\n    get overrideDOMText() {\n        if (this.length == 0)\n            return Text.empty;\n        let top = this;\n        while (top.parent)\n            top = top.parent;\n        let { view } = top, text = view && view.state.doc, start = this.posAtStart;\n        return text ? text.slice(start, start + this.length) : Text.empty;\n    }\n    domAtPos(pos) {\n        return (this.length ? pos == 0 : this.side > 0)\n            ? DOMPos.before(this.dom)\n            : DOMPos.after(this.dom, pos == this.length);\n    }\n    domBoundsAround() { return null; }\n    coordsAt(pos, side) {\n        let custom = this.widget.coordsAt(this.dom, pos, side);\n        if (custom)\n            return custom;\n        let rects = this.dom.getClientRects(), rect = null;\n        if (!rects.length)\n            return null;\n        let fromBack = this.side ? this.side < 0 : pos > 0;\n        for (let i = fromBack ? rects.length - 1 : 0;; i += (fromBack ? -1 : 1)) {\n            rect = rects[i];\n            if (pos > 0 ? i == 0 : i == rects.length - 1 || rect.top < rect.bottom)\n                break;\n        }\n        return flattenRect(rect, !fromBack);\n    }\n    get isEditable() { return false; }\n    get isWidget() { return true; }\n    get isHidden() { return this.widget.isHidden; }\n    destroy() {\n        super.destroy();\n        if (this.dom)\n            this.widget.destroy(this.dom);\n    }\n}\n// These are drawn around uneditable widgets to avoid a number of\n// browser bugs that show up when the cursor is directly next to\n// uneditable inline content.\nclass WidgetBufferView extends ContentView {\n    constructor(side) {\n        super();\n        this.side = side;\n    }\n    get length() { return 0; }\n    merge() { return false; }\n    become(other) {\n        return other instanceof WidgetBufferView && other.side == this.side;\n    }\n    split() { return new WidgetBufferView(this.side); }\n    sync() {\n        if (!this.dom) {\n            let dom = document.createElement(\"img\");\n            dom.className = \"cm-widgetBuffer\";\n            dom.setAttribute(\"aria-hidden\", \"true\");\n            this.setDOM(dom);\n        }\n    }\n    getSide() { return this.side; }\n    domAtPos(pos) { return this.side > 0 ? DOMPos.before(this.dom) : DOMPos.after(this.dom); }\n    localPosFromDOM() { return 0; }\n    domBoundsAround() { return null; }\n    coordsAt(pos) {\n        return this.dom.getBoundingClientRect();\n    }\n    get overrideDOMText() {\n        return Text.empty;\n    }\n    get isHidden() { return true; }\n}\nTextView.prototype.children = WidgetView.prototype.children = WidgetBufferView.prototype.children = noChildren;\nfunction inlineDOMAtPos(parent, pos) {\n    let dom = parent.dom, { children } = parent, i = 0;\n    for (let off = 0; i < children.length; i++) {\n        let child = children[i], end = off + child.length;\n        if (end == off && child.getSide() <= 0)\n            continue;\n        if (pos > off && pos < end && child.dom.parentNode == dom)\n            return child.domAtPos(pos - off);\n        if (pos <= off)\n            break;\n        off = end;\n    }\n    for (let j = i; j > 0; j--) {\n        let prev = children[j - 1];\n        if (prev.dom.parentNode == dom)\n            return prev.domAtPos(prev.length);\n    }\n    for (let j = i; j < children.length; j++) {\n        let next = children[j];\n        if (next.dom.parentNode == dom)\n            return next.domAtPos(0);\n    }\n    return new DOMPos(dom, 0);\n}\n// Assumes `view`, if a mark view, has precisely 1 child.\nfunction joinInlineInto(parent, view, open) {\n    let last, { children } = parent;\n    if (open > 0 && view instanceof MarkView && children.length &&\n        (last = children[children.length - 1]) instanceof MarkView && last.mark.eq(view.mark)) {\n        joinInlineInto(last, view.children[0], open - 1);\n    }\n    else {\n        children.push(view);\n        view.setParent(parent);\n    }\n    parent.length += view.length;\n}\nfunction coordsInChildren(view, pos, side) {\n    let before = null, beforePos = -1, after = null, afterPos = -1;\n    function scan(view, pos) {\n        for (let i = 0, off = 0; i < view.children.length && off <= pos; i++) {\n            let child = view.children[i], end = off + child.length;\n            if (end >= pos) {\n                if (child.children.length) {\n                    scan(child, pos - off);\n                }\n                else if ((!after || after.isHidden && side > 0) &&\n                    (end > pos || off == end && child.getSide() > 0)) {\n                    after = child;\n                    afterPos = pos - off;\n                }\n                else if (off < pos || (off == end && child.getSide() < 0) && !child.isHidden) {\n                    before = child;\n                    beforePos = pos - off;\n                }\n            }\n            off = end;\n        }\n    }\n    scan(view, pos);\n    let target = (side < 0 ? before : after) || before || after;\n    if (target)\n        return target.coordsAt(Math.max(0, target == before ? beforePos : afterPos), side);\n    return fallbackRect(view);\n}\nfunction fallbackRect(view) {\n    let last = view.dom.lastChild;\n    if (!last)\n        return view.dom.getBoundingClientRect();\n    let rects = clientRectsFor(last);\n    return rects[rects.length - 1] || null;\n}\n\nfunction combineAttrs(source, target) {\n    for (let name in source) {\n        if (name == \"class\" && target.class)\n            target.class += \" \" + source.class;\n        else if (name == \"style\" && target.style)\n            target.style += \";\" + source.style;\n        else\n            target[name] = source[name];\n    }\n    return target;\n}\nconst noAttrs = /*@__PURE__*/Object.create(null);\nfunction attrsEq(a, b, ignore) {\n    if (a == b)\n        return true;\n    if (!a)\n        a = noAttrs;\n    if (!b)\n        b = noAttrs;\n    let keysA = Object.keys(a), keysB = Object.keys(b);\n    if (keysA.length - (ignore && keysA.indexOf(ignore) > -1 ? 1 : 0) !=\n        keysB.length - (ignore && keysB.indexOf(ignore) > -1 ? 1 : 0))\n        return false;\n    for (let key of keysA) {\n        if (key != ignore && (keysB.indexOf(key) == -1 || a[key] !== b[key]))\n            return false;\n    }\n    return true;\n}\nfunction updateAttrs(dom, prev, attrs) {\n    let changed = false;\n    if (prev)\n        for (let name in prev)\n            if (!(attrs && name in attrs)) {\n                changed = true;\n                if (name == \"style\")\n                    dom.style.cssText = \"\";\n                else\n                    dom.removeAttribute(name);\n            }\n    if (attrs)\n        for (let name in attrs)\n            if (!(prev && prev[name] == attrs[name])) {\n                changed = true;\n                if (name == \"style\")\n                    dom.style.cssText = attrs[name];\n                else\n                    dom.setAttribute(name, attrs[name]);\n            }\n    return changed;\n}\nfunction getAttrs(dom) {\n    let attrs = Object.create(null);\n    for (let i = 0; i < dom.attributes.length; i++) {\n        let attr = dom.attributes[i];\n        attrs[attr.name] = attr.value;\n    }\n    return attrs;\n}\n\n/**\nWidgets added to the content are described by subclasses of this\nclass. Using a description object like that makes it possible to\ndelay creating of the DOM structure for a widget until it is\nneeded, and to avoid redrawing widgets even if the decorations\nthat define them are recreated.\n*/\nclass WidgetType {\n    /**\n    Compare this instance to another instance of the same type.\n    (TypeScript can't express this, but only instances of the same\n    specific class will be passed to this method.) This is used to\n    avoid redrawing widgets when they are replaced by a new\n    decoration of the same type. The default implementation just\n    returns `false`, which will cause new instances of the widget to\n    always be redrawn.\n    */\n    eq(widget) { return false; }\n    /**\n    Update a DOM element created by a widget of the same type (but\n    different, non-`eq` content) to reflect this widget. May return\n    true to indicate that it could update, false to indicate it\n    couldn't (in which case the widget will be redrawn). The default\n    implementation just returns false.\n    */\n    updateDOM(dom, view) { return false; }\n    /**\n    @internal\n    */\n    compare(other) {\n        return this == other || this.constructor == other.constructor && this.eq(other);\n    }\n    /**\n    The estimated height this widget will have, to be used when\n    estimating the height of content that hasn't been drawn. May\n    return -1 to indicate you don't know. The default implementation\n    returns -1.\n    */\n    get estimatedHeight() { return -1; }\n    /**\n    For inline widgets that are displayed inline (as opposed to\n    `inline-block`) and introduce line breaks (through `<br>` tags\n    or textual newlines), this must indicate the amount of line\n    breaks they introduce. Defaults to 0.\n    */\n    get lineBreaks() { return 0; }\n    /**\n    Can be used to configure which kinds of events inside the widget\n    should be ignored by the editor. The default is to ignore all\n    events.\n    */\n    ignoreEvent(event) { return true; }\n    /**\n    Override the way screen coordinates for positions at/in the\n    widget are found. `pos` will be the offset into the widget, and\n    `side` the side of the position that is being queried—less than\n    zero for before, greater than zero for after, and zero for\n    directly at that position.\n    */\n    coordsAt(dom, pos, side) { return null; }\n    /**\n    @internal\n    */\n    get isHidden() { return false; }\n    /**\n    @internal\n    */\n    get editable() { return false; }\n    /**\n    This is called when the an instance of the widget is removed\n    from the editor view.\n    */\n    destroy(dom) { }\n}\n/**\nThe different types of blocks that can occur in an editor view.\n*/\nvar BlockType = /*@__PURE__*/(function (BlockType) {\n    /**\n    A line of text.\n    */\n    BlockType[BlockType[\"Text\"] = 0] = \"Text\";\n    /**\n    A block widget associated with the position after it.\n    */\n    BlockType[BlockType[\"WidgetBefore\"] = 1] = \"WidgetBefore\";\n    /**\n    A block widget associated with the position before it.\n    */\n    BlockType[BlockType[\"WidgetAfter\"] = 2] = \"WidgetAfter\";\n    /**\n    A block widget [replacing](https://codemirror.net/6/docs/ref/#view.Decoration^replace) a range of content.\n    */\n    BlockType[BlockType[\"WidgetRange\"] = 3] = \"WidgetRange\";\nreturn BlockType})(BlockType || (BlockType = {}));\n/**\nA decoration provides information on how to draw or style a piece\nof content. You'll usually use it wrapped in a\n[`Range`](https://codemirror.net/6/docs/ref/#state.Range), which adds a start and end position.\n@nonabstract\n*/\nclass Decoration extends RangeValue {\n    constructor(\n    /**\n    @internal\n    */\n    startSide, \n    /**\n    @internal\n    */\n    endSide, \n    /**\n    @internal\n    */\n    widget, \n    /**\n    The config object used to create this decoration. You can\n    include additional properties in there to store metadata about\n    your decoration.\n    */\n    spec) {\n        super();\n        this.startSide = startSide;\n        this.endSide = endSide;\n        this.widget = widget;\n        this.spec = spec;\n    }\n    /**\n    @internal\n    */\n    get heightRelevant() { return false; }\n    /**\n    Create a mark decoration, which influences the styling of the\n    content in its range. Nested mark decorations will cause nested\n    DOM elements to be created. Nesting order is determined by\n    precedence of the [facet](https://codemirror.net/6/docs/ref/#view.EditorView^decorations), with\n    the higher-precedence decorations creating the inner DOM nodes.\n    Such elements are split on line boundaries and on the boundaries\n    of lower-precedence decorations.\n    */\n    static mark(spec) {\n        return new MarkDecoration(spec);\n    }\n    /**\n    Create a widget decoration, which displays a DOM element at the\n    given position.\n    */\n    static widget(spec) {\n        let side = Math.max(-10000, Math.min(10000, spec.side || 0)), block = !!spec.block;\n        side += (block && !spec.inlineOrder)\n            ? (side > 0 ? 300000000 /* Side.BlockAfter */ : -400000000 /* Side.BlockBefore */)\n            : (side > 0 ? 100000000 /* Side.InlineAfter */ : -100000000 /* Side.InlineBefore */);\n        return new PointDecoration(spec, side, side, block, spec.widget || null, false);\n    }\n    /**\n    Create a replace decoration which replaces the given range with\n    a widget, or simply hides it.\n    */\n    static replace(spec) {\n        let block = !!spec.block, startSide, endSide;\n        if (spec.isBlockGap) {\n            startSide = -500000000 /* Side.GapStart */;\n            endSide = 400000000 /* Side.GapEnd */;\n        }\n        else {\n            let { start, end } = getInclusive(spec, block);\n            startSide = (start ? (block ? -300000000 /* Side.BlockIncStart */ : -1 /* Side.InlineIncStart */) : 500000000 /* Side.NonIncStart */) - 1;\n            endSide = (end ? (block ? 200000000 /* Side.BlockIncEnd */ : 1 /* Side.InlineIncEnd */) : -600000000 /* Side.NonIncEnd */) + 1;\n        }\n        return new PointDecoration(spec, startSide, endSide, block, spec.widget || null, true);\n    }\n    /**\n    Create a line decoration, which can add DOM attributes to the\n    line starting at the given position.\n    */\n    static line(spec) {\n        return new LineDecoration(spec);\n    }\n    /**\n    Build a [`DecorationSet`](https://codemirror.net/6/docs/ref/#view.DecorationSet) from the given\n    decorated range or ranges. If the ranges aren't already sorted,\n    pass `true` for `sort` to make the library sort them for you.\n    */\n    static set(of, sort = false) {\n        return RangeSet.of(of, sort);\n    }\n    /**\n    @internal\n    */\n    hasHeight() { return this.widget ? this.widget.estimatedHeight > -1 : false; }\n}\n/**\nThe empty set of decorations.\n*/\nDecoration.none = RangeSet.empty;\nclass MarkDecoration extends Decoration {\n    constructor(spec) {\n        let { start, end } = getInclusive(spec);\n        super(start ? -1 /* Side.InlineIncStart */ : 500000000 /* Side.NonIncStart */, end ? 1 /* Side.InlineIncEnd */ : -600000000 /* Side.NonIncEnd */, null, spec);\n        this.tagName = spec.tagName || \"span\";\n        this.class = spec.class || \"\";\n        this.attrs = spec.attributes || null;\n    }\n    eq(other) {\n        var _a, _b;\n        return this == other ||\n            other instanceof MarkDecoration &&\n                this.tagName == other.tagName &&\n                (this.class || ((_a = this.attrs) === null || _a === void 0 ? void 0 : _a.class)) == (other.class || ((_b = other.attrs) === null || _b === void 0 ? void 0 : _b.class)) &&\n                attrsEq(this.attrs, other.attrs, \"class\");\n    }\n    range(from, to = from) {\n        if (from >= to)\n            throw new RangeError(\"Mark decorations may not be empty\");\n        return super.range(from, to);\n    }\n}\nMarkDecoration.prototype.point = false;\nclass LineDecoration extends Decoration {\n    constructor(spec) {\n        super(-200000000 /* Side.Line */, -200000000 /* Side.Line */, null, spec);\n    }\n    eq(other) {\n        return other instanceof LineDecoration &&\n            this.spec.class == other.spec.class &&\n            attrsEq(this.spec.attributes, other.spec.attributes);\n    }\n    range(from, to = from) {\n        if (to != from)\n            throw new RangeError(\"Line decoration ranges must be zero-length\");\n        return super.range(from, to);\n    }\n}\nLineDecoration.prototype.mapMode = MapMode.TrackBefore;\nLineDecoration.prototype.point = true;\nclass PointDecoration extends Decoration {\n    constructor(spec, startSide, endSide, block, widget, isReplace) {\n        super(startSide, endSide, widget, spec);\n        this.block = block;\n        this.isReplace = isReplace;\n        this.mapMode = !block ? MapMode.TrackDel : startSide <= 0 ? MapMode.TrackBefore : MapMode.TrackAfter;\n    }\n    // Only relevant when this.block == true\n    get type() {\n        return this.startSide != this.endSide ? BlockType.WidgetRange\n            : this.startSide <= 0 ? BlockType.WidgetBefore : BlockType.WidgetAfter;\n    }\n    get heightRelevant() {\n        return this.block || !!this.widget && (this.widget.estimatedHeight >= 5 || this.widget.lineBreaks > 0);\n    }\n    eq(other) {\n        return other instanceof PointDecoration &&\n            widgetsEq(this.widget, other.widget) &&\n            this.block == other.block &&\n            this.startSide == other.startSide && this.endSide == other.endSide;\n    }\n    range(from, to = from) {\n        if (this.isReplace && (from > to || (from == to && this.startSide > 0 && this.endSide <= 0)))\n            throw new RangeError(\"Invalid range for replacement decoration\");\n        if (!this.isReplace && to != from)\n            throw new RangeError(\"Widget decorations can only have zero-length ranges\");\n        return super.range(from, to);\n    }\n}\nPointDecoration.prototype.point = true;\nfunction getInclusive(spec, block = false) {\n    let { inclusiveStart: start, inclusiveEnd: end } = spec;\n    if (start == null)\n        start = spec.inclusive;\n    if (end == null)\n        end = spec.inclusive;\n    return { start: start !== null && start !== void 0 ? start : block, end: end !== null && end !== void 0 ? end : block };\n}\nfunction widgetsEq(a, b) {\n    return a == b || !!(a && b && a.compare(b));\n}\nfunction addRange(from, to, ranges, margin = 0) {\n    let last = ranges.length - 1;\n    if (last >= 0 && ranges[last] + margin >= from)\n        ranges[last] = Math.max(ranges[last], to);\n    else\n        ranges.push(from, to);\n}\n\nclass LineView extends ContentView {\n    constructor() {\n        super(...arguments);\n        this.children = [];\n        this.length = 0;\n        this.prevAttrs = undefined;\n        this.attrs = null;\n        this.breakAfter = 0;\n    }\n    // Consumes source\n    merge(from, to, source, hasStart, openStart, openEnd) {\n        if (source) {\n            if (!(source instanceof LineView))\n                return false;\n            if (!this.dom)\n                source.transferDOM(this); // Reuse source.dom when appropriate\n        }\n        if (hasStart)\n            this.setDeco(source ? source.attrs : null);\n        mergeChildrenInto(this, from, to, source ? source.children.slice() : [], openStart, openEnd);\n        return true;\n    }\n    split(at) {\n        let end = new LineView;\n        end.breakAfter = this.breakAfter;\n        if (this.length == 0)\n            return end;\n        let { i, off } = this.childPos(at);\n        if (off) {\n            end.append(this.children[i].split(off), 0);\n            this.children[i].merge(off, this.children[i].length, null, false, 0, 0);\n            i++;\n        }\n        for (let j = i; j < this.children.length; j++)\n            end.append(this.children[j], 0);\n        while (i > 0 && this.children[i - 1].length == 0)\n            this.children[--i].destroy();\n        this.children.length = i;\n        this.markDirty();\n        this.length = at;\n        return end;\n    }\n    transferDOM(other) {\n        if (!this.dom)\n            return;\n        this.markDirty();\n        other.setDOM(this.dom);\n        other.prevAttrs = this.prevAttrs === undefined ? this.attrs : this.prevAttrs;\n        this.prevAttrs = undefined;\n        this.dom = null;\n    }\n    setDeco(attrs) {\n        if (!attrsEq(this.attrs, attrs)) {\n            if (this.dom) {\n                this.prevAttrs = this.attrs;\n                this.markDirty();\n            }\n            this.attrs = attrs;\n        }\n    }\n    append(child, openStart) {\n        joinInlineInto(this, child, openStart);\n    }\n    // Only called when building a line view in ContentBuilder\n    addLineDeco(deco) {\n        let attrs = deco.spec.attributes, cls = deco.spec.class;\n        if (attrs)\n            this.attrs = combineAttrs(attrs, this.attrs || {});\n        if (cls)\n            this.attrs = combineAttrs({ class: cls }, this.attrs || {});\n    }\n    domAtPos(pos) {\n        return inlineDOMAtPos(this, pos);\n    }\n    reuseDOM(node) {\n        if (node.nodeName == \"DIV\") {\n            this.setDOM(node);\n            this.flags |= 4 /* ViewFlag.AttrsDirty */ | 2 /* ViewFlag.NodeDirty */;\n        }\n    }\n    sync(view, track) {\n        var _a;\n        if (!this.dom) {\n            this.setDOM(document.createElement(\"div\"));\n            this.dom.className = \"cm-line\";\n            this.prevAttrs = this.attrs ? null : undefined;\n        }\n        else if (this.flags & 4 /* ViewFlag.AttrsDirty */) {\n            clearAttributes(this.dom);\n            this.dom.className = \"cm-line\";\n            this.prevAttrs = this.attrs ? null : undefined;\n        }\n        if (this.prevAttrs !== undefined) {\n            updateAttrs(this.dom, this.prevAttrs, this.attrs);\n            this.dom.classList.add(\"cm-line\");\n            this.prevAttrs = undefined;\n        }\n        super.sync(view, track);\n        let last = this.dom.lastChild;\n        while (last && ContentView.get(last) instanceof MarkView)\n            last = last.lastChild;\n        if (!last || !this.length ||\n            last.nodeName != \"BR\" && ((_a = ContentView.get(last)) === null || _a === void 0 ? void 0 : _a.isEditable) == false &&\n                (!browser.ios || !this.children.some(ch => ch instanceof TextView))) {\n            let hack = document.createElement(\"BR\");\n            hack.cmIgnore = true;\n            this.dom.appendChild(hack);\n        }\n    }\n    measureTextSize() {\n        if (this.children.length == 0 || this.length > 20)\n            return null;\n        let totalWidth = 0, textHeight;\n        for (let child of this.children) {\n            if (!(child instanceof TextView) || /[^ -~]/.test(child.text))\n                return null;\n            let rects = clientRectsFor(child.dom);\n            if (rects.length != 1)\n                return null;\n            totalWidth += rects[0].width;\n            textHeight = rects[0].height;\n        }\n        return !totalWidth ? null : {\n            lineHeight: this.dom.getBoundingClientRect().height,\n            charWidth: totalWidth / this.length,\n            textHeight\n        };\n    }\n    coordsAt(pos, side) {\n        let rect = coordsInChildren(this, pos, side);\n        // Correct rectangle height for empty lines when the returned\n        // height is larger than the text height.\n        if (!this.children.length && rect && this.parent) {\n            let { heightOracle } = this.parent.view.viewState, height = rect.bottom - rect.top;\n            if (Math.abs(height - heightOracle.lineHeight) < 2 && heightOracle.textHeight < height) {\n                let dist = (height - heightOracle.textHeight) / 2;\n                return { top: rect.top + dist, bottom: rect.bottom - dist, left: rect.left, right: rect.left };\n            }\n        }\n        return rect;\n    }\n    become(other) {\n        return other instanceof LineView && this.children.length == 0 && other.children.length == 0 &&\n            attrsEq(this.attrs, other.attrs) && this.breakAfter == other.breakAfter;\n    }\n    covers() { return true; }\n    static find(docView, pos) {\n        for (let i = 0, off = 0; i < docView.children.length; i++) {\n            let block = docView.children[i], end = off + block.length;\n            if (end >= pos) {\n                if (block instanceof LineView)\n                    return block;\n                if (end > pos)\n                    break;\n            }\n            off = end + block.breakAfter;\n        }\n        return null;\n    }\n}\nclass BlockWidgetView extends ContentView {\n    constructor(widget, length, deco) {\n        super();\n        this.widget = widget;\n        this.length = length;\n        this.deco = deco;\n        this.breakAfter = 0;\n        this.prevWidget = null;\n    }\n    merge(from, to, source, _takeDeco, openStart, openEnd) {\n        if (source && (!(source instanceof BlockWidgetView) || !this.widget.compare(source.widget) ||\n            from > 0 && openStart <= 0 || to < this.length && openEnd <= 0))\n            return false;\n        this.length = from + (source ? source.length : 0) + (this.length - to);\n        return true;\n    }\n    domAtPos(pos) {\n        return pos == 0 ? DOMPos.before(this.dom) : DOMPos.after(this.dom, pos == this.length);\n    }\n    split(at) {\n        let len = this.length - at;\n        this.length = at;\n        let end = new BlockWidgetView(this.widget, len, this.deco);\n        end.breakAfter = this.breakAfter;\n        return end;\n    }\n    get children() { return noChildren; }\n    sync(view) {\n        if (!this.dom || !this.widget.updateDOM(this.dom, view)) {\n            if (this.dom && this.prevWidget)\n                this.prevWidget.destroy(this.dom);\n            this.prevWidget = null;\n            this.setDOM(this.widget.toDOM(view));\n            if (!this.widget.editable)\n                this.dom.contentEditable = \"false\";\n        }\n    }\n    get overrideDOMText() {\n        return this.parent ? this.parent.view.state.doc.slice(this.posAtStart, this.posAtEnd) : Text.empty;\n    }\n    domBoundsAround() { return null; }\n    become(other) {\n        if (other instanceof BlockWidgetView &&\n            other.widget.constructor == this.widget.constructor) {\n            if (!other.widget.compare(this.widget))\n                this.markDirty(true);\n            if (this.dom && !this.prevWidget)\n                this.prevWidget = this.widget;\n            this.widget = other.widget;\n            this.length = other.length;\n            this.deco = other.deco;\n            this.breakAfter = other.breakAfter;\n            return true;\n        }\n        return false;\n    }\n    ignoreMutation() { return true; }\n    ignoreEvent(event) { return this.widget.ignoreEvent(event); }\n    get isEditable() { return false; }\n    get isWidget() { return true; }\n    coordsAt(pos, side) {\n        let custom = this.widget.coordsAt(this.dom, pos, side);\n        if (custom)\n            return custom;\n        if (this.widget instanceof BlockGapWidget)\n            return null;\n        return flattenRect(this.dom.getBoundingClientRect(), this.length ? pos == 0 : side <= 0);\n    }\n    destroy() {\n        super.destroy();\n        if (this.dom)\n            this.widget.destroy(this.dom);\n    }\n    covers(side) {\n        let { startSide, endSide } = this.deco;\n        return startSide == endSide ? false : side < 0 ? startSide < 0 : endSide > 0;\n    }\n}\nclass BlockGapWidget extends WidgetType {\n    constructor(height) {\n        super();\n        this.height = height;\n    }\n    toDOM() {\n        let elt = document.createElement(\"div\");\n        elt.className = \"cm-gap\";\n        this.updateDOM(elt);\n        return elt;\n    }\n    eq(other) { return other.height == this.height; }\n    updateDOM(elt) {\n        elt.style.height = this.height + \"px\";\n        return true;\n    }\n    get editable() { return true; }\n    get estimatedHeight() { return this.height; }\n    ignoreEvent() { return false; }\n}\n\nclass ContentBuilder {\n    constructor(doc, pos, end, disallowBlockEffectsFor) {\n        this.doc = doc;\n        this.pos = pos;\n        this.end = end;\n        this.disallowBlockEffectsFor = disallowBlockEffectsFor;\n        this.content = [];\n        this.curLine = null;\n        this.breakAtStart = 0;\n        this.pendingBuffer = 0 /* Buf.No */;\n        this.bufferMarks = [];\n        // Set to false directly after a widget that covers the position after it\n        this.atCursorPos = true;\n        this.openStart = -1;\n        this.openEnd = -1;\n        this.text = \"\";\n        this.textOff = 0;\n        this.cursor = doc.iter();\n        this.skip = pos;\n    }\n    posCovered() {\n        if (this.content.length == 0)\n            return !this.breakAtStart && this.doc.lineAt(this.pos).from != this.pos;\n        let last = this.content[this.content.length - 1];\n        return !(last.breakAfter || last instanceof BlockWidgetView && last.deco.endSide < 0);\n    }\n    getLine() {\n        if (!this.curLine) {\n            this.content.push(this.curLine = new LineView);\n            this.atCursorPos = true;\n        }\n        return this.curLine;\n    }\n    flushBuffer(active = this.bufferMarks) {\n        if (this.pendingBuffer) {\n            this.curLine.append(wrapMarks(new WidgetBufferView(-1), active), active.length);\n            this.pendingBuffer = 0 /* Buf.No */;\n        }\n    }\n    addBlockWidget(view) {\n        this.flushBuffer();\n        this.curLine = null;\n        this.content.push(view);\n    }\n    finish(openEnd) {\n        if (this.pendingBuffer && openEnd <= this.bufferMarks.length)\n            this.flushBuffer();\n        else\n            this.pendingBuffer = 0 /* Buf.No */;\n        if (!this.posCovered() &&\n            !(openEnd && this.content.length && this.content[this.content.length - 1] instanceof BlockWidgetView))\n            this.getLine();\n    }\n    buildText(length, active, openStart) {\n        while (length > 0) {\n            if (this.textOff == this.text.length) {\n                let { value, lineBreak, done } = this.cursor.next(this.skip);\n                this.skip = 0;\n                if (done)\n                    throw new Error(\"Ran out of text content when drawing inline views\");\n                if (lineBreak) {\n                    if (!this.posCovered())\n                        this.getLine();\n                    if (this.content.length)\n                        this.content[this.content.length - 1].breakAfter = 1;\n                    else\n                        this.breakAtStart = 1;\n                    this.flushBuffer();\n                    this.curLine = null;\n                    this.atCursorPos = true;\n                    length--;\n                    continue;\n                }\n                else {\n                    this.text = value;\n                    this.textOff = 0;\n                }\n            }\n            let take = Math.min(this.text.length - this.textOff, length, 512 /* T.Chunk */);\n            this.flushBuffer(active.slice(active.length - openStart));\n            this.getLine().append(wrapMarks(new TextView(this.text.slice(this.textOff, this.textOff + take)), active), openStart);\n            this.atCursorPos = true;\n            this.textOff += take;\n            length -= take;\n            openStart = 0;\n        }\n    }\n    span(from, to, active, openStart) {\n        this.buildText(to - from, active, openStart);\n        this.pos = to;\n        if (this.openStart < 0)\n            this.openStart = openStart;\n    }\n    point(from, to, deco, active, openStart, index) {\n        if (this.disallowBlockEffectsFor[index] && deco instanceof PointDecoration) {\n            if (deco.block)\n                throw new RangeError(\"Block decorations may not be specified via plugins\");\n            if (to > this.doc.lineAt(this.pos).to)\n                throw new RangeError(\"Decorations that replace line breaks may not be specified via plugins\");\n        }\n        let len = to - from;\n        if (deco instanceof PointDecoration) {\n            if (deco.block) {\n                if (deco.startSide > 0 && !this.posCovered())\n                    this.getLine();\n                this.addBlockWidget(new BlockWidgetView(deco.widget || NullWidget.block, len, deco));\n            }\n            else {\n                let view = WidgetView.create(deco.widget || NullWidget.inline, len, len ? 0 : deco.startSide);\n                let cursorBefore = this.atCursorPos && !view.isEditable && openStart <= active.length &&\n                    (from < to || deco.startSide > 0);\n                let cursorAfter = !view.isEditable && (from < to || openStart > active.length || deco.startSide <= 0);\n                let line = this.getLine();\n                if (this.pendingBuffer == 2 /* Buf.IfCursor */ && !cursorBefore && !view.isEditable)\n                    this.pendingBuffer = 0 /* Buf.No */;\n                this.flushBuffer(active);\n                if (cursorBefore) {\n                    line.append(wrapMarks(new WidgetBufferView(1), active), openStart);\n                    openStart = active.length + Math.max(0, openStart - active.length);\n                }\n                line.append(wrapMarks(view, active), openStart);\n                this.atCursorPos = cursorAfter;\n                this.pendingBuffer = !cursorAfter ? 0 /* Buf.No */ : from < to || openStart > active.length ? 1 /* Buf.Yes */ : 2 /* Buf.IfCursor */;\n                if (this.pendingBuffer)\n                    this.bufferMarks = active.slice();\n            }\n        }\n        else if (this.doc.lineAt(this.pos).from == this.pos) { // Line decoration\n            this.getLine().addLineDeco(deco);\n        }\n        if (len) {\n            // Advance the iterator past the replaced content\n            if (this.textOff + len <= this.text.length) {\n                this.textOff += len;\n            }\n            else {\n                this.skip += len - (this.text.length - this.textOff);\n                this.text = \"\";\n                this.textOff = 0;\n            }\n            this.pos = to;\n        }\n        if (this.openStart < 0)\n            this.openStart = openStart;\n    }\n    static build(text, from, to, decorations, dynamicDecorationMap) {\n        let builder = new ContentBuilder(text, from, to, dynamicDecorationMap);\n        builder.openEnd = RangeSet.spans(decorations, from, to, builder);\n        if (builder.openStart < 0)\n            builder.openStart = builder.openEnd;\n        builder.finish(builder.openEnd);\n        return builder;\n    }\n}\nfunction wrapMarks(view, active) {\n    for (let mark of active)\n        view = new MarkView(mark, [view], view.length);\n    return view;\n}\nclass NullWidget extends WidgetType {\n    constructor(tag) {\n        super();\n        this.tag = tag;\n    }\n    eq(other) { return other.tag == this.tag; }\n    toDOM() { return document.createElement(this.tag); }\n    updateDOM(elt) { return elt.nodeName.toLowerCase() == this.tag; }\n    get isHidden() { return true; }\n}\nNullWidget.inline = /*@__PURE__*/new NullWidget(\"span\");\nNullWidget.block = /*@__PURE__*/new NullWidget(\"div\");\n\n/**\nUsed to indicate [text direction](https://codemirror.net/6/docs/ref/#view.EditorView.textDirection).\n*/\nvar Direction = /*@__PURE__*/(function (Direction) {\n    // (These are chosen to match the base levels, in bidi algorithm\n    // terms, of spans in that direction.)\n    /**\n    Left-to-right.\n    */\n    Direction[Direction[\"LTR\"] = 0] = \"LTR\";\n    /**\n    Right-to-left.\n    */\n    Direction[Direction[\"RTL\"] = 1] = \"RTL\";\nreturn Direction})(Direction || (Direction = {}));\nconst LTR = Direction.LTR, RTL = Direction.RTL;\n// Decode a string with each type encoded as log2(type)\nfunction dec(str) {\n    let result = [];\n    for (let i = 0; i < str.length; i++)\n        result.push(1 << +str[i]);\n    return result;\n}\n// Character types for codepoints 0 to 0xf8\nconst LowTypes = /*@__PURE__*/dec(\"88888888888888888888888888888888888666888888787833333333337888888000000000000000000000000008888880000000000000000000000000088888888888888888888888888888888888887866668888088888663380888308888800000000000000000000000800000000000000000000000000000008\");\n// Character types for codepoints 0x600 to 0x6f9\nconst ArabicTypes = /*@__PURE__*/dec(\"4444448826627288999999999992222222222222222222222222222222222222222222222229999999999999999999994444444444644222822222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222999999949999999229989999223333333333\");\nconst Brackets = /*@__PURE__*/Object.create(null), BracketStack = [];\n// There's a lot more in\n// https://www.unicode.org/Public/UCD/latest/ucd/BidiBrackets.txt,\n// which are left out to keep code size down.\nfor (let p of [\"()\", \"[]\", \"{}\"]) {\n    let l = /*@__PURE__*/p.charCodeAt(0), r = /*@__PURE__*/p.charCodeAt(1);\n    Brackets[l] = r;\n    Brackets[r] = -l;\n}\nfunction charType(ch) {\n    return ch <= 0xf7 ? LowTypes[ch] :\n        0x590 <= ch && ch <= 0x5f4 ? 2 /* T.R */ :\n            0x600 <= ch && ch <= 0x6f9 ? ArabicTypes[ch - 0x600] :\n                0x6ee <= ch && ch <= 0x8ac ? 4 /* T.AL */ :\n                    0x2000 <= ch && ch <= 0x200c ? 256 /* T.NI */ :\n                        0xfb50 <= ch && ch <= 0xfdff ? 4 /* T.AL */ : 1 /* T.L */;\n}\nconst BidiRE = /[\\u0590-\\u05f4\\u0600-\\u06ff\\u0700-\\u08ac\\ufb50-\\ufdff]/;\n/**\nRepresents a contiguous range of text that has a single direction\n(as in left-to-right or right-to-left).\n*/\nclass BidiSpan {\n    /**\n    The direction of this span.\n    */\n    get dir() { return this.level % 2 ? RTL : LTR; }\n    /**\n    @internal\n    */\n    constructor(\n    /**\n    The start of the span (relative to the start of the line).\n    */\n    from, \n    /**\n    The end of the span.\n    */\n    to, \n    /**\n    The [\"bidi\n    level\"](https://unicode.org/reports/tr9/#Basic_Display_Algorithm)\n    of the span (in this context, 0 means\n    left-to-right, 1 means right-to-left, 2 means left-to-right\n    number inside right-to-left text).\n    */\n    level) {\n        this.from = from;\n        this.to = to;\n        this.level = level;\n    }\n    /**\n    @internal\n    */\n    side(end, dir) { return (this.dir == dir) == end ? this.to : this.from; }\n    /**\n    @internal\n    */\n    forward(forward, dir) { return forward == (this.dir == dir); }\n    /**\n    @internal\n    */\n    static find(order, index, level, assoc) {\n        let maybe = -1;\n        for (let i = 0; i < order.length; i++) {\n            let span = order[i];\n            if (span.from <= index && span.to >= index) {\n                if (span.level == level)\n                    return i;\n                // When multiple spans match, if assoc != 0, take the one that\n                // covers that side, otherwise take the one with the minimum\n                // level.\n                if (maybe < 0 || (assoc != 0 ? (assoc < 0 ? span.from < index : span.to > index) : order[maybe].level > span.level))\n                    maybe = i;\n            }\n        }\n        if (maybe < 0)\n            throw new RangeError(\"Index out of range\");\n        return maybe;\n    }\n}\nfunction isolatesEq(a, b) {\n    if (a.length != b.length)\n        return false;\n    for (let i = 0; i < a.length; i++) {\n        let iA = a[i], iB = b[i];\n        if (iA.from != iB.from || iA.to != iB.to || iA.direction != iB.direction || !isolatesEq(iA.inner, iB.inner))\n            return false;\n    }\n    return true;\n}\n// Reused array of character types\nconst types = [];\n// Fill in the character types (in `types`) from `from` to `to` and\n// apply W normalization rules.\nfunction computeCharTypes(line, rFrom, rTo, isolates, outerType) {\n    for (let iI = 0; iI <= isolates.length; iI++) {\n        let from = iI ? isolates[iI - 1].to : rFrom, to = iI < isolates.length ? isolates[iI].from : rTo;\n        let prevType = iI ? 256 /* T.NI */ : outerType;\n        // W1. Examine each non-spacing mark (NSM) in the level run, and\n        // change the type of the NSM to the type of the previous\n        // character. If the NSM is at the start of the level run, it will\n        // get the type of sor.\n        // W2. Search backwards from each instance of a European number\n        // until the first strong type (R, L, AL, or sor) is found. If an\n        // AL is found, change the type of the European number to Arabic\n        // number.\n        // W3. Change all ALs to R.\n        // (Left after this: L, R, EN, AN, ET, CS, NI)\n        for (let i = from, prev = prevType, prevStrong = prevType; i < to; i++) {\n            let type = charType(line.charCodeAt(i));\n            if (type == 512 /* T.NSM */)\n                type = prev;\n            else if (type == 8 /* T.EN */ && prevStrong == 4 /* T.AL */)\n                type = 16 /* T.AN */;\n            types[i] = type == 4 /* T.AL */ ? 2 /* T.R */ : type;\n            if (type & 7 /* T.Strong */)\n                prevStrong = type;\n            prev = type;\n        }\n        // W5. A sequence of European terminators adjacent to European\n        // numbers changes to all European numbers.\n        // W6. Otherwise, separators and terminators change to Other\n        // Neutral.\n        // W7. Search backwards from each instance of a European number\n        // until the first strong type (R, L, or sor) is found. If an L is\n        // found, then change the type of the European number to L.\n        // (Left after this: L, R, EN+AN, NI)\n        for (let i = from, prev = prevType, prevStrong = prevType; i < to; i++) {\n            let type = types[i];\n            if (type == 128 /* T.CS */) {\n                if (i < to - 1 && prev == types[i + 1] && (prev & 24 /* T.Num */))\n                    type = types[i] = prev;\n                else\n                    types[i] = 256 /* T.NI */;\n            }\n            else if (type == 64 /* T.ET */) {\n                let end = i + 1;\n                while (end < to && types[end] == 64 /* T.ET */)\n                    end++;\n                let replace = (i && prev == 8 /* T.EN */) || (end < rTo && types[end] == 8 /* T.EN */) ? (prevStrong == 1 /* T.L */ ? 1 /* T.L */ : 8 /* T.EN */) : 256 /* T.NI */;\n                for (let j = i; j < end; j++)\n                    types[j] = replace;\n                i = end - 1;\n            }\n            else if (type == 8 /* T.EN */ && prevStrong == 1 /* T.L */) {\n                types[i] = 1 /* T.L */;\n            }\n            prev = type;\n            if (type & 7 /* T.Strong */)\n                prevStrong = type;\n        }\n    }\n}\n// Process brackets throughout a run sequence.\nfunction processBracketPairs(line, rFrom, rTo, isolates, outerType) {\n    let oppositeType = outerType == 1 /* T.L */ ? 2 /* T.R */ : 1 /* T.L */;\n    for (let iI = 0, sI = 0, context = 0; iI <= isolates.length; iI++) {\n        let from = iI ? isolates[iI - 1].to : rFrom, to = iI < isolates.length ? isolates[iI].from : rTo;\n        // N0. Process bracket pairs in an isolating run sequence\n        // sequentially in the logical order of the text positions of the\n        // opening paired brackets using the logic given below. Within this\n        // scope, bidirectional types EN and AN are treated as R.\n        for (let i = from, ch, br, type; i < to; i++) {\n            // Keeps [startIndex, type, strongSeen] triples for each open\n            // bracket on BracketStack.\n            if (br = Brackets[ch = line.charCodeAt(i)]) {\n                if (br < 0) { // Closing bracket\n                    for (let sJ = sI - 3; sJ >= 0; sJ -= 3) {\n                        if (BracketStack[sJ + 1] == -br) {\n                            let flags = BracketStack[sJ + 2];\n                            let type = (flags & 2 /* Bracketed.EmbedInside */) ? outerType :\n                                !(flags & 4 /* Bracketed.OppositeInside */) ? 0 :\n                                    (flags & 1 /* Bracketed.OppositeBefore */) ? oppositeType : outerType;\n                            if (type)\n                                types[i] = types[BracketStack[sJ]] = type;\n                            sI = sJ;\n                            break;\n                        }\n                    }\n                }\n                else if (BracketStack.length == 189 /* Bracketed.MaxDepth */) {\n                    break;\n                }\n                else {\n                    BracketStack[sI++] = i;\n                    BracketStack[sI++] = ch;\n                    BracketStack[sI++] = context;\n                }\n            }\n            else if ((type = types[i]) == 2 /* T.R */ || type == 1 /* T.L */) {\n                let embed = type == outerType;\n                context = embed ? 0 : 1 /* Bracketed.OppositeBefore */;\n                for (let sJ = sI - 3; sJ >= 0; sJ -= 3) {\n                    let cur = BracketStack[sJ + 2];\n                    if (cur & 2 /* Bracketed.EmbedInside */)\n                        break;\n                    if (embed) {\n                        BracketStack[sJ + 2] |= 2 /* Bracketed.EmbedInside */;\n                    }\n                    else {\n                        if (cur & 4 /* Bracketed.OppositeInside */)\n                            break;\n                        BracketStack[sJ + 2] |= 4 /* Bracketed.OppositeInside */;\n                    }\n                }\n            }\n        }\n    }\n}\nfunction processNeutrals(rFrom, rTo, isolates, outerType) {\n    for (let iI = 0, prev = outerType; iI <= isolates.length; iI++) {\n        let from = iI ? isolates[iI - 1].to : rFrom, to = iI < isolates.length ? isolates[iI].from : rTo;\n        // N1. A sequence of neutrals takes the direction of the\n        // surrounding strong text if the text on both sides has the same\n        // direction. European and Arabic numbers act as if they were R in\n        // terms of their influence on neutrals. Start-of-level-run (sor)\n        // and end-of-level-run (eor) are used at level run boundaries.\n        // N2. Any remaining neutrals take the embedding direction.\n        // (Left after this: L, R, EN+AN)\n        for (let i = from; i < to;) {\n            let type = types[i];\n            if (type == 256 /* T.NI */) {\n                let end = i + 1;\n                for (;;) {\n                    if (end == to) {\n                        if (iI == isolates.length)\n                            break;\n                        end = isolates[iI++].to;\n                        to = iI < isolates.length ? isolates[iI].from : rTo;\n                    }\n                    else if (types[end] == 256 /* T.NI */) {\n                        end++;\n                    }\n                    else {\n                        break;\n                    }\n                }\n                let beforeL = prev == 1 /* T.L */;\n                let afterL = (end < rTo ? types[end] : outerType) == 1 /* T.L */;\n                let replace = beforeL == afterL ? (beforeL ? 1 /* T.L */ : 2 /* T.R */) : outerType;\n                for (let j = end, jI = iI, fromJ = jI ? isolates[jI - 1].to : rFrom; j > i;) {\n                    if (j == fromJ) {\n                        j = isolates[--jI].from;\n                        fromJ = jI ? isolates[jI - 1].to : rFrom;\n                    }\n                    types[--j] = replace;\n                }\n                i = end;\n            }\n            else {\n                prev = type;\n                i++;\n            }\n        }\n    }\n}\n// Find the contiguous ranges of character types in a given range, and\n// emit spans for them. Flip the order of the spans as appropriate\n// based on the level, and call through to compute the spans for\n// isolates at the proper point.\nfunction emitSpans(line, from, to, level, baseLevel, isolates, order) {\n    let ourType = level % 2 ? 2 /* T.R */ : 1 /* T.L */;\n    if ((level % 2) == (baseLevel % 2)) { // Same dir as base direction, don't flip\n        for (let iCh = from, iI = 0; iCh < to;) {\n            // Scan a section of characters in direction ourType, unless\n            // there's another type of char right after iCh, in which case\n            // we scan a section of other characters (which, if ourType ==\n            // T.L, may contain both T.R and T.AN chars).\n            let sameDir = true, isNum = false;\n            if (iI == isolates.length || iCh < isolates[iI].from) {\n                let next = types[iCh];\n                if (next != ourType) {\n                    sameDir = false;\n                    isNum = next == 16 /* T.AN */;\n                }\n            }\n            // Holds an array of isolates to pass to a recursive call if we\n            // must recurse (to distinguish T.AN inside an RTL section in\n            // LTR text), null if we can emit directly\n            let recurse = !sameDir && ourType == 1 /* T.L */ ? [] : null;\n            let localLevel = sameDir ? level : level + 1;\n            let iScan = iCh;\n            run: for (;;) {\n                if (iI < isolates.length && iScan == isolates[iI].from) {\n                    if (isNum)\n                        break run;\n                    let iso = isolates[iI];\n                    // Scan ahead to verify that there is another char in this dir after the isolate(s)\n                    if (!sameDir)\n                        for (let upto = iso.to, jI = iI + 1;;) {\n                            if (upto == to)\n                                break run;\n                            if (jI < isolates.length && isolates[jI].from == upto)\n                                upto = isolates[jI++].to;\n                            else if (types[upto] == ourType)\n                                break run;\n                            else\n                                break;\n                        }\n                    iI++;\n                    if (recurse) {\n                        recurse.push(iso);\n                    }\n                    else {\n                        if (iso.from > iCh)\n                            order.push(new BidiSpan(iCh, iso.from, localLevel));\n                        let dirSwap = (iso.direction == LTR) != !(localLevel % 2);\n                        computeSectionOrder(line, dirSwap ? level + 1 : level, baseLevel, iso.inner, iso.from, iso.to, order);\n                        iCh = iso.to;\n                    }\n                    iScan = iso.to;\n                }\n                else if (iScan == to || (sameDir ? types[iScan] != ourType : types[iScan] == ourType)) {\n                    break;\n                }\n                else {\n                    iScan++;\n                }\n            }\n            if (recurse)\n                emitSpans(line, iCh, iScan, level + 1, baseLevel, recurse, order);\n            else if (iCh < iScan)\n                order.push(new BidiSpan(iCh, iScan, localLevel));\n            iCh = iScan;\n        }\n    }\n    else {\n        // Iterate in reverse to flip the span order. Same code again, but\n        // going from the back of the section to the front\n        for (let iCh = to, iI = isolates.length; iCh > from;) {\n            let sameDir = true, isNum = false;\n            if (!iI || iCh > isolates[iI - 1].to) {\n                let next = types[iCh - 1];\n                if (next != ourType) {\n                    sameDir = false;\n                    isNum = next == 16 /* T.AN */;\n                }\n            }\n            let recurse = !sameDir && ourType == 1 /* T.L */ ? [] : null;\n            let localLevel = sameDir ? level : level + 1;\n            let iScan = iCh;\n            run: for (;;) {\n                if (iI && iScan == isolates[iI - 1].to) {\n                    if (isNum)\n                        break run;\n                    let iso = isolates[--iI];\n                    // Scan ahead to verify that there is another char in this dir after the isolate(s)\n                    if (!sameDir)\n                        for (let upto = iso.from, jI = iI;;) {\n                            if (upto == from)\n                                break run;\n                            if (jI && isolates[jI - 1].to == upto)\n                                upto = isolates[--jI].from;\n                            else if (types[upto - 1] == ourType)\n                                break run;\n                            else\n                                break;\n                        }\n                    if (recurse) {\n                        recurse.push(iso);\n                    }\n                    else {\n                        if (iso.to < iCh)\n                            order.push(new BidiSpan(iso.to, iCh, localLevel));\n                        let dirSwap = (iso.direction == LTR) != !(localLevel % 2);\n                        computeSectionOrder(line, dirSwap ? level + 1 : level, baseLevel, iso.inner, iso.from, iso.to, order);\n                        iCh = iso.from;\n                    }\n                    iScan = iso.from;\n                }\n                else if (iScan == from || (sameDir ? types[iScan - 1] != ourType : types[iScan - 1] == ourType)) {\n                    break;\n                }\n                else {\n                    iScan--;\n                }\n            }\n            if (recurse)\n                emitSpans(line, iScan, iCh, level + 1, baseLevel, recurse, order);\n            else if (iScan < iCh)\n                order.push(new BidiSpan(iScan, iCh, localLevel));\n            iCh = iScan;\n        }\n    }\n}\nfunction computeSectionOrder(line, level, baseLevel, isolates, from, to, order) {\n    let outerType = (level % 2 ? 2 /* T.R */ : 1 /* T.L */);\n    computeCharTypes(line, from, to, isolates, outerType);\n    processBracketPairs(line, from, to, isolates, outerType);\n    processNeutrals(from, to, isolates, outerType);\n    emitSpans(line, from, to, level, baseLevel, isolates, order);\n}\nfunction computeOrder(line, direction, isolates) {\n    if (!line)\n        return [new BidiSpan(0, 0, direction == RTL ? 1 : 0)];\n    if (direction == LTR && !isolates.length && !BidiRE.test(line))\n        return trivialOrder(line.length);\n    if (isolates.length)\n        while (line.length > types.length)\n            types[types.length] = 256 /* T.NI */; // Make sure types array has no gaps\n    let order = [], level = direction == LTR ? 0 : 1;\n    computeSectionOrder(line, level, level, isolates, 0, line.length, order);\n    return order;\n}\nfunction trivialOrder(length) {\n    return [new BidiSpan(0, length, 0)];\n}\nlet movedOver = \"\";\n// This implementation moves strictly visually, without concern for a\n// traversal visiting every logical position in the string. It will\n// still do so for simple input, but situations like multiple isolates\n// with the same level next to each other, or text going against the\n// main dir at the end of the line, will make some positions\n// unreachable with this motion. Each visible cursor position will\n// correspond to the lower-level bidi span that touches it.\n//\n// The alternative would be to solve an order globally for a given\n// line, making sure that it includes every position, but that would\n// require associating non-canonical (higher bidi span level)\n// positions with a given visual position, which is likely to confuse\n// people. (And would generally be a lot more complicated.)\nfunction moveVisually(line, order, dir, start, forward) {\n    var _a;\n    let startIndex = start.head - line.from;\n    let spanI = BidiSpan.find(order, startIndex, (_a = start.bidiLevel) !== null && _a !== void 0 ? _a : -1, start.assoc);\n    let span = order[spanI], spanEnd = span.side(forward, dir);\n    // End of span\n    if (startIndex == spanEnd) {\n        let nextI = spanI += forward ? 1 : -1;\n        if (nextI < 0 || nextI >= order.length)\n            return null;\n        span = order[spanI = nextI];\n        startIndex = span.side(!forward, dir);\n        spanEnd = span.side(forward, dir);\n    }\n    let nextIndex = findClusterBreak(line.text, startIndex, span.forward(forward, dir));\n    if (nextIndex < span.from || nextIndex > span.to)\n        nextIndex = spanEnd;\n    movedOver = line.text.slice(Math.min(startIndex, nextIndex), Math.max(startIndex, nextIndex));\n    let nextSpan = spanI == (forward ? order.length - 1 : 0) ? null : order[spanI + (forward ? 1 : -1)];\n    if (nextSpan && nextIndex == spanEnd && nextSpan.level + (forward ? 0 : 1) < span.level)\n        return EditorSelection.cursor(nextSpan.side(!forward, dir) + line.from, nextSpan.forward(forward, dir) ? 1 : -1, nextSpan.level);\n    return EditorSelection.cursor(nextIndex + line.from, span.forward(forward, dir) ? -1 : 1, span.level);\n}\nfunction autoDirection(text, from, to) {\n    for (let i = from; i < to; i++) {\n        let type = charType(text.charCodeAt(i));\n        if (type == 1 /* T.L */)\n            return LTR;\n        if (type == 2 /* T.R */ || type == 4 /* T.AL */)\n            return RTL;\n    }\n    return LTR;\n}\n\nconst clickAddsSelectionRange = /*@__PURE__*/Facet.define();\nconst dragMovesSelection$1 = /*@__PURE__*/Facet.define();\nconst mouseSelectionStyle = /*@__PURE__*/Facet.define();\nconst exceptionSink = /*@__PURE__*/Facet.define();\nconst updateListener = /*@__PURE__*/Facet.define();\nconst inputHandler = /*@__PURE__*/Facet.define();\nconst focusChangeEffect = /*@__PURE__*/Facet.define();\nconst clipboardInputFilter = /*@__PURE__*/Facet.define();\nconst clipboardOutputFilter = /*@__PURE__*/Facet.define();\nconst perLineTextDirection = /*@__PURE__*/Facet.define({\n    combine: values => values.some(x => x)\n});\nconst nativeSelectionHidden = /*@__PURE__*/Facet.define({\n    combine: values => values.some(x => x)\n});\nconst scrollHandler = /*@__PURE__*/Facet.define();\nclass ScrollTarget {\n    constructor(range, y = \"nearest\", x = \"nearest\", yMargin = 5, xMargin = 5, \n    // This data structure is abused to also store precise scroll\n    // snapshots, instead of a `scrollIntoView` request. When this\n    // flag is `true`, `range` points at a position in the reference\n    // line, `yMargin` holds the difference between the top of that\n    // line and the top of the editor, and `xMargin` holds the\n    // editor's `scrollLeft`.\n    isSnapshot = false) {\n        this.range = range;\n        this.y = y;\n        this.x = x;\n        this.yMargin = yMargin;\n        this.xMargin = xMargin;\n        this.isSnapshot = isSnapshot;\n    }\n    map(changes) {\n        return changes.empty ? this :\n            new ScrollTarget(this.range.map(changes), this.y, this.x, this.yMargin, this.xMargin, this.isSnapshot);\n    }\n    clip(state) {\n        return this.range.to <= state.doc.length ? this :\n            new ScrollTarget(EditorSelection.cursor(state.doc.length), this.y, this.x, this.yMargin, this.xMargin, this.isSnapshot);\n    }\n}\nconst scrollIntoView = /*@__PURE__*/StateEffect.define({ map: (t, ch) => t.map(ch) });\nconst setEditContextFormatting = /*@__PURE__*/StateEffect.define();\n/**\nLog or report an unhandled exception in client code. Should\nprobably only be used by extension code that allows client code to\nprovide functions, and calls those functions in a context where an\nexception can't be propagated to calling code in a reasonable way\n(for example when in an event handler).\n\nEither calls a handler registered with\n[`EditorView.exceptionSink`](https://codemirror.net/6/docs/ref/#view.EditorView^exceptionSink),\n`window.onerror`, if defined, or `console.error` (in which case\nit'll pass `context`, when given, as first argument).\n*/\nfunction logException(state, exception, context) {\n    let handler = state.facet(exceptionSink);\n    if (handler.length)\n        handler[0](exception);\n    else if (window.onerror)\n        window.onerror(String(exception), context, undefined, undefined, exception);\n    else if (context)\n        console.error(context + \":\", exception);\n    else\n        console.error(exception);\n}\nconst editable = /*@__PURE__*/Facet.define({ combine: values => values.length ? values[0] : true });\nlet nextPluginID = 0;\nconst viewPlugin = /*@__PURE__*/Facet.define();\n/**\nView plugins associate stateful values with a view. They can\ninfluence the way the content is drawn, and are notified of things\nthat happen in the view.\n*/\nclass ViewPlugin {\n    constructor(\n    /**\n    @internal\n    */\n    id, \n    /**\n    @internal\n    */\n    create, \n    /**\n    @internal\n    */\n    domEventHandlers, \n    /**\n    @internal\n    */\n    domEventObservers, buildExtensions) {\n        this.id = id;\n        this.create = create;\n        this.domEventHandlers = domEventHandlers;\n        this.domEventObservers = domEventObservers;\n        this.extension = buildExtensions(this);\n    }\n    /**\n    Define a plugin from a constructor function that creates the\n    plugin's value, given an editor view.\n    */\n    static define(create, spec) {\n        const { eventHandlers, eventObservers, provide, decorations: deco } = spec || {};\n        return new ViewPlugin(nextPluginID++, create, eventHandlers, eventObservers, plugin => {\n            let ext = [viewPlugin.of(plugin)];\n            if (deco)\n                ext.push(decorations.of(view => {\n                    let pluginInst = view.plugin(plugin);\n                    return pluginInst ? deco(pluginInst) : Decoration.none;\n                }));\n            if (provide)\n                ext.push(provide(plugin));\n            return ext;\n        });\n    }\n    /**\n    Create a plugin for a class whose constructor takes a single\n    editor view as argument.\n    */\n    static fromClass(cls, spec) {\n        return ViewPlugin.define(view => new cls(view), spec);\n    }\n}\nclass PluginInstance {\n    constructor(spec) {\n        this.spec = spec;\n        // When starting an update, all plugins have this field set to the\n        // update object, indicating they need to be updated. When finished\n        // updating, it is set to `false`. Retrieving a plugin that needs to\n        // be updated with `view.plugin` forces an eager update.\n        this.mustUpdate = null;\n        // This is null when the plugin is initially created, but\n        // initialized on the first update.\n        this.value = null;\n    }\n    update(view) {\n        if (!this.value) {\n            if (this.spec) {\n                try {\n                    this.value = this.spec.create(view);\n                }\n                catch (e) {\n                    logException(view.state, e, \"CodeMirror plugin crashed\");\n                    this.deactivate();\n                }\n            }\n        }\n        else if (this.mustUpdate) {\n            let update = this.mustUpdate;\n            this.mustUpdate = null;\n            if (this.value.update) {\n                try {\n                    this.value.update(update);\n                }\n                catch (e) {\n                    logException(update.state, e, \"CodeMirror plugin crashed\");\n                    if (this.value.destroy)\n                        try {\n                            this.value.destroy();\n                        }\n                        catch (_) { }\n                    this.deactivate();\n                }\n            }\n        }\n        return this;\n    }\n    destroy(view) {\n        var _a;\n        if ((_a = this.value) === null || _a === void 0 ? void 0 : _a.destroy) {\n            try {\n                this.value.destroy();\n            }\n            catch (e) {\n                logException(view.state, e, \"CodeMirror plugin crashed\");\n            }\n        }\n    }\n    deactivate() {\n        this.spec = this.value = null;\n    }\n}\nconst editorAttributes = /*@__PURE__*/Facet.define();\nconst contentAttributes = /*@__PURE__*/Facet.define();\n// Provide decorations\nconst decorations = /*@__PURE__*/Facet.define();\nconst outerDecorations = /*@__PURE__*/Facet.define();\nconst atomicRanges = /*@__PURE__*/Facet.define();\nconst bidiIsolatedRanges = /*@__PURE__*/Facet.define();\nfunction getIsolatedRanges(view, line) {\n    let isolates = view.state.facet(bidiIsolatedRanges);\n    if (!isolates.length)\n        return isolates;\n    let sets = isolates.map(i => i instanceof Function ? i(view) : i);\n    let result = [];\n    RangeSet.spans(sets, line.from, line.to, {\n        point() { },\n        span(fromDoc, toDoc, active, open) {\n            let from = fromDoc - line.from, to = toDoc - line.from;\n            let level = result;\n            for (let i = active.length - 1; i >= 0; i--, open--) {\n                let direction = active[i].spec.bidiIsolate, update;\n                if (direction == null)\n                    direction = autoDirection(line.text, from, to);\n                if (open > 0 && level.length &&\n                    (update = level[level.length - 1]).to == from && update.direction == direction) {\n                    update.to = to;\n                    level = update.inner;\n                }\n                else {\n                    let add = { from, to, direction, inner: [] };\n                    level.push(add);\n                    level = add.inner;\n                }\n            }\n        }\n    });\n    return result;\n}\nconst scrollMargins = /*@__PURE__*/Facet.define();\nfunction getScrollMargins(view) {\n    let left = 0, right = 0, top = 0, bottom = 0;\n    for (let source of view.state.facet(scrollMargins)) {\n        let m = source(view);\n        if (m) {\n            if (m.left != null)\n                left = Math.max(left, m.left);\n            if (m.right != null)\n                right = Math.max(right, m.right);\n            if (m.top != null)\n                top = Math.max(top, m.top);\n            if (m.bottom != null)\n                bottom = Math.max(bottom, m.bottom);\n        }\n    }\n    return { left, right, top, bottom };\n}\nconst styleModule = /*@__PURE__*/Facet.define();\nclass ChangedRange {\n    constructor(fromA, toA, fromB, toB) {\n        this.fromA = fromA;\n        this.toA = toA;\n        this.fromB = fromB;\n        this.toB = toB;\n    }\n    join(other) {\n        return new ChangedRange(Math.min(this.fromA, other.fromA), Math.max(this.toA, other.toA), Math.min(this.fromB, other.fromB), Math.max(this.toB, other.toB));\n    }\n    addToSet(set) {\n        let i = set.length, me = this;\n        for (; i > 0; i--) {\n            let range = set[i - 1];\n            if (range.fromA > me.toA)\n                continue;\n            if (range.toA < me.fromA)\n                break;\n            me = me.join(range);\n            set.splice(i - 1, 1);\n        }\n        set.splice(i, 0, me);\n        return set;\n    }\n    static extendWithRanges(diff, ranges) {\n        if (ranges.length == 0)\n            return diff;\n        let result = [];\n        for (let dI = 0, rI = 0, posA = 0, posB = 0;; dI++) {\n            let next = dI == diff.length ? null : diff[dI], off = posA - posB;\n            let end = next ? next.fromB : 1e9;\n            while (rI < ranges.length && ranges[rI] < end) {\n                let from = ranges[rI], to = ranges[rI + 1];\n                let fromB = Math.max(posB, from), toB = Math.min(end, to);\n                if (fromB <= toB)\n                    new ChangedRange(fromB + off, toB + off, fromB, toB).addToSet(result);\n                if (to > end)\n                    break;\n                else\n                    rI += 2;\n            }\n            if (!next)\n                return result;\n            new ChangedRange(next.fromA, next.toA, next.fromB, next.toB).addToSet(result);\n            posA = next.toA;\n            posB = next.toB;\n        }\n    }\n}\n/**\nView [plugins](https://codemirror.net/6/docs/ref/#view.ViewPlugin) are given instances of this\nclass, which describe what happened, whenever the view is updated.\n*/\nclass ViewUpdate {\n    constructor(\n    /**\n    The editor view that the update is associated with.\n    */\n    view, \n    /**\n    The new editor state.\n    */\n    state, \n    /**\n    The transactions involved in the update. May be empty.\n    */\n    transactions) {\n        this.view = view;\n        this.state = state;\n        this.transactions = transactions;\n        /**\n        @internal\n        */\n        this.flags = 0;\n        this.startState = view.state;\n        this.changes = ChangeSet.empty(this.startState.doc.length);\n        for (let tr of transactions)\n            this.changes = this.changes.compose(tr.changes);\n        let changedRanges = [];\n        this.changes.iterChangedRanges((fromA, toA, fromB, toB) => changedRanges.push(new ChangedRange(fromA, toA, fromB, toB)));\n        this.changedRanges = changedRanges;\n    }\n    /**\n    @internal\n    */\n    static create(view, state, transactions) {\n        return new ViewUpdate(view, state, transactions);\n    }\n    /**\n    Tells you whether the [viewport](https://codemirror.net/6/docs/ref/#view.EditorView.viewport) or\n    [visible ranges](https://codemirror.net/6/docs/ref/#view.EditorView.visibleRanges) changed in this\n    update.\n    */\n    get viewportChanged() {\n        return (this.flags & 4 /* UpdateFlag.Viewport */) > 0;\n    }\n    /**\n    Indicates whether the height of a block element in the editor\n    changed in this update.\n    */\n    get heightChanged() {\n        return (this.flags & 2 /* UpdateFlag.Height */) > 0;\n    }\n    /**\n    Returns true when the document was modified or the size of the\n    editor, or elements within the editor, changed.\n    */\n    get geometryChanged() {\n        return this.docChanged || (this.flags & (8 /* UpdateFlag.Geometry */ | 2 /* UpdateFlag.Height */)) > 0;\n    }\n    /**\n    True when this update indicates a focus change.\n    */\n    get focusChanged() {\n        return (this.flags & 1 /* UpdateFlag.Focus */) > 0;\n    }\n    /**\n    Whether the document changed in this update.\n    */\n    get docChanged() {\n        return !this.changes.empty;\n    }\n    /**\n    Whether the selection was explicitly set in this update.\n    */\n    get selectionSet() {\n        return this.transactions.some(tr => tr.selection);\n    }\n    /**\n    @internal\n    */\n    get empty() { return this.flags == 0 && this.transactions.length == 0; }\n}\n\nclass DocView extends ContentView {\n    get length() { return this.view.state.doc.length; }\n    constructor(view) {\n        super();\n        this.view = view;\n        this.decorations = [];\n        this.dynamicDecorationMap = [false];\n        this.domChanged = null;\n        this.hasComposition = null;\n        this.markedForComposition = new Set;\n        this.editContextFormatting = Decoration.none;\n        this.lastCompositionAfterCursor = false;\n        // Track a minimum width for the editor. When measuring sizes in\n        // measureVisibleLineHeights, this is updated to point at the width\n        // of a given element and its extent in the document. When a change\n        // happens in that range, these are reset. That way, once we've seen\n        // a line/element of a given length, we keep the editor wide enough\n        // to fit at least that element, until it is changed, at which point\n        // we forget it again.\n        this.minWidth = 0;\n        this.minWidthFrom = 0;\n        this.minWidthTo = 0;\n        // Track whether the DOM selection was set in a lossy way, so that\n        // we don't mess it up when reading it back it\n        this.impreciseAnchor = null;\n        this.impreciseHead = null;\n        this.forceSelection = false;\n        // Used by the resize observer to ignore resizes that we caused\n        // ourselves\n        this.lastUpdate = Date.now();\n        this.setDOM(view.contentDOM);\n        this.children = [new LineView];\n        this.children[0].setParent(this);\n        this.updateDeco();\n        this.updateInner([new ChangedRange(0, 0, 0, view.state.doc.length)], 0, null);\n    }\n    // Update the document view to a given state.\n    update(update) {\n        var _a;\n        let changedRanges = update.changedRanges;\n        if (this.minWidth > 0 && changedRanges.length) {\n            if (!changedRanges.every(({ fromA, toA }) => toA < this.minWidthFrom || fromA > this.minWidthTo)) {\n                this.minWidth = this.minWidthFrom = this.minWidthTo = 0;\n            }\n            else {\n                this.minWidthFrom = update.changes.mapPos(this.minWidthFrom, 1);\n                this.minWidthTo = update.changes.mapPos(this.minWidthTo, 1);\n            }\n        }\n        this.updateEditContextFormatting(update);\n        let readCompositionAt = -1;\n        if (this.view.inputState.composing >= 0 && !this.view.observer.editContext) {\n            if ((_a = this.domChanged) === null || _a === void 0 ? void 0 : _a.newSel)\n                readCompositionAt = this.domChanged.newSel.head;\n            else if (!touchesComposition(update.changes, this.hasComposition) && !update.selectionSet)\n                readCompositionAt = update.state.selection.main.head;\n        }\n        let composition = readCompositionAt > -1 ? findCompositionRange(this.view, update.changes, readCompositionAt) : null;\n        this.domChanged = null;\n        if (this.hasComposition) {\n            this.markedForComposition.clear();\n            let { from, to } = this.hasComposition;\n            changedRanges = new ChangedRange(from, to, update.changes.mapPos(from, -1), update.changes.mapPos(to, 1))\n                .addToSet(changedRanges.slice());\n        }\n        this.hasComposition = composition ? { from: composition.range.fromB, to: composition.range.toB } : null;\n        // When the DOM nodes around the selection are moved to another\n        // parent, Chrome sometimes reports a different selection through\n        // getSelection than the one that it actually shows to the user.\n        // This forces a selection update when lines are joined to work\n        // around that. Issue #54\n        if ((browser.ie || browser.chrome) && !composition && update &&\n            update.state.doc.lines != update.startState.doc.lines)\n            this.forceSelection = true;\n        let prevDeco = this.decorations, deco = this.updateDeco();\n        let decoDiff = findChangedDeco(prevDeco, deco, update.changes);\n        changedRanges = ChangedRange.extendWithRanges(changedRanges, decoDiff);\n        if (!(this.flags & 7 /* ViewFlag.Dirty */) && changedRanges.length == 0) {\n            return false;\n        }\n        else {\n            this.updateInner(changedRanges, update.startState.doc.length, composition);\n            if (update.transactions.length)\n                this.lastUpdate = Date.now();\n            return true;\n        }\n    }\n    // Used by update and the constructor do perform the actual DOM\n    // update\n    updateInner(changes, oldLength, composition) {\n        this.view.viewState.mustMeasureContent = true;\n        this.updateChildren(changes, oldLength, composition);\n        let { observer } = this.view;\n        observer.ignore(() => {\n            // Lock the height during redrawing, since Chrome sometimes\n            // messes with the scroll position during DOM mutation (though\n            // no relayout is triggered and I cannot imagine how it can\n            // recompute the scroll position without a layout)\n            this.dom.style.height = this.view.viewState.contentHeight / this.view.scaleY + \"px\";\n            this.dom.style.flexBasis = this.minWidth ? this.minWidth + \"px\" : \"\";\n            // Chrome will sometimes, when DOM mutations occur directly\n            // around the selection, get confused and report a different\n            // selection from the one it displays (issue #218). This tries\n            // to detect that situation.\n            let track = browser.chrome || browser.ios ? { node: observer.selectionRange.focusNode, written: false } : undefined;\n            this.sync(this.view, track);\n            this.flags &= ~7 /* ViewFlag.Dirty */;\n            if (track && (track.written || observer.selectionRange.focusNode != track.node))\n                this.forceSelection = true;\n            this.dom.style.height = \"\";\n        });\n        this.markedForComposition.forEach(cView => cView.flags &= ~8 /* ViewFlag.Composition */);\n        let gaps = [];\n        if (this.view.viewport.from || this.view.viewport.to < this.view.state.doc.length)\n            for (let child of this.children)\n                if (child instanceof BlockWidgetView && child.widget instanceof BlockGapWidget)\n                    gaps.push(child.dom);\n        observer.updateGaps(gaps);\n    }\n    updateChildren(changes, oldLength, composition) {\n        let ranges = composition ? composition.range.addToSet(changes.slice()) : changes;\n        let cursor = this.childCursor(oldLength);\n        for (let i = ranges.length - 1;; i--) {\n            let next = i >= 0 ? ranges[i] : null;\n            if (!next)\n                break;\n            let { fromA, toA, fromB, toB } = next, content, breakAtStart, openStart, openEnd;\n            if (composition && composition.range.fromB < toB && composition.range.toB > fromB) {\n                let before = ContentBuilder.build(this.view.state.doc, fromB, composition.range.fromB, this.decorations, this.dynamicDecorationMap);\n                let after = ContentBuilder.build(this.view.state.doc, composition.range.toB, toB, this.decorations, this.dynamicDecorationMap);\n                breakAtStart = before.breakAtStart;\n                openStart = before.openStart;\n                openEnd = after.openEnd;\n                let compLine = this.compositionView(composition);\n                if (after.breakAtStart) {\n                    compLine.breakAfter = 1;\n                }\n                else if (after.content.length &&\n                    compLine.merge(compLine.length, compLine.length, after.content[0], false, after.openStart, 0)) {\n                    compLine.breakAfter = after.content[0].breakAfter;\n                    after.content.shift();\n                }\n                if (before.content.length &&\n                    compLine.merge(0, 0, before.content[before.content.length - 1], true, 0, before.openEnd)) {\n                    before.content.pop();\n                }\n                content = before.content.concat(compLine).concat(after.content);\n            }\n            else {\n                ({ content, breakAtStart, openStart, openEnd } =\n                    ContentBuilder.build(this.view.state.doc, fromB, toB, this.decorations, this.dynamicDecorationMap));\n            }\n            let { i: toI, off: toOff } = cursor.findPos(toA, 1);\n            let { i: fromI, off: fromOff } = cursor.findPos(fromA, -1);\n            replaceRange(this, fromI, fromOff, toI, toOff, content, breakAtStart, openStart, openEnd);\n        }\n        if (composition)\n            this.fixCompositionDOM(composition);\n    }\n    updateEditContextFormatting(update) {\n        this.editContextFormatting = this.editContextFormatting.map(update.changes);\n        for (let tr of update.transactions)\n            for (let effect of tr.effects)\n                if (effect.is(setEditContextFormatting)) {\n                    this.editContextFormatting = effect.value;\n                }\n    }\n    compositionView(composition) {\n        let cur = new TextView(composition.text.nodeValue);\n        cur.flags |= 8 /* ViewFlag.Composition */;\n        for (let { deco } of composition.marks)\n            cur = new MarkView(deco, [cur], cur.length);\n        let line = new LineView;\n        line.append(cur, 0);\n        return line;\n    }\n    fixCompositionDOM(composition) {\n        let fix = (dom, cView) => {\n            cView.flags |= 8 /* ViewFlag.Composition */ | (cView.children.some(c => c.flags & 7 /* ViewFlag.Dirty */) ? 1 /* ViewFlag.ChildDirty */ : 0);\n            this.markedForComposition.add(cView);\n            let prev = ContentView.get(dom);\n            if (prev && prev != cView)\n                prev.dom = null;\n            cView.setDOM(dom);\n        };\n        let pos = this.childPos(composition.range.fromB, 1);\n        let cView = this.children[pos.i];\n        fix(composition.line, cView);\n        for (let i = composition.marks.length - 1; i >= -1; i--) {\n            pos = cView.childPos(pos.off, 1);\n            cView = cView.children[pos.i];\n            fix(i >= 0 ? composition.marks[i].node : composition.text, cView);\n        }\n    }\n    // Sync the DOM selection to this.state.selection\n    updateSelection(mustRead = false, fromPointer = false) {\n        if (mustRead || !this.view.observer.selectionRange.focusNode)\n            this.view.observer.readSelectionRange();\n        let activeElt = this.view.root.activeElement, focused = activeElt == this.dom;\n        let selectionNotFocus = !focused &&\n            hasSelection(this.dom, this.view.observer.selectionRange) && !(activeElt && this.dom.contains(activeElt));\n        if (!(focused || fromPointer || selectionNotFocus))\n            return;\n        let force = this.forceSelection;\n        this.forceSelection = false;\n        let main = this.view.state.selection.main;\n        let anchor = this.moveToLine(this.domAtPos(main.anchor));\n        let head = main.empty ? anchor : this.moveToLine(this.domAtPos(main.head));\n        // Always reset on Firefox when next to an uneditable node to\n        // avoid invisible cursor bugs (#111)\n        if (browser.gecko && main.empty && !this.hasComposition && betweenUneditable(anchor)) {\n            let dummy = document.createTextNode(\"\");\n            this.view.observer.ignore(() => anchor.node.insertBefore(dummy, anchor.node.childNodes[anchor.offset] || null));\n            anchor = head = new DOMPos(dummy, 0);\n            force = true;\n        }\n        let domSel = this.view.observer.selectionRange;\n        // If the selection is already here, or in an equivalent position, don't touch it\n        if (force || !domSel.focusNode || (!isEquivalentPosition(anchor.node, anchor.offset, domSel.anchorNode, domSel.anchorOffset) ||\n            !isEquivalentPosition(head.node, head.offset, domSel.focusNode, domSel.focusOffset)) && !this.suppressWidgetCursorChange(domSel, main)) {\n            this.view.observer.ignore(() => {\n                // Chrome Android will hide the virtual keyboard when tapping\n                // inside an uneditable node, and not bring it back when we\n                // move the cursor to its proper position. This tries to\n                // restore the keyboard by cycling focus.\n                if (browser.android && browser.chrome && this.dom.contains(domSel.focusNode) &&\n                    inUneditable(domSel.focusNode, this.dom)) {\n                    this.dom.blur();\n                    this.dom.focus({ preventScroll: true });\n                }\n                let rawSel = getSelection(this.view.root);\n                if (!rawSel) ;\n                else if (main.empty) {\n                    // Work around https://bugzilla.mozilla.org/show_bug.cgi?id=1612076\n                    if (browser.gecko) {\n                        let nextTo = nextToUneditable(anchor.node, anchor.offset);\n                        if (nextTo && nextTo != (1 /* NextTo.Before */ | 2 /* NextTo.After */)) {\n                            let text = (nextTo == 1 /* NextTo.Before */ ? textNodeBefore : textNodeAfter)(anchor.node, anchor.offset);\n                            if (text)\n                                anchor = new DOMPos(text.node, text.offset);\n                        }\n                    }\n                    rawSel.collapse(anchor.node, anchor.offset);\n                    if (main.bidiLevel != null && rawSel.caretBidiLevel !== undefined)\n                        rawSel.caretBidiLevel = main.bidiLevel;\n                }\n                else if (rawSel.extend) {\n                    // Selection.extend can be used to create an 'inverted' selection\n                    // (one where the focus is before the anchor), but not all\n                    // browsers support it yet.\n                    rawSel.collapse(anchor.node, anchor.offset);\n                    // Safari will ignore the call above when the editor is\n                    // hidden, and then raise an error on the call to extend\n                    // (#940).\n                    try {\n                        rawSel.extend(head.node, head.offset);\n                    }\n                    catch (_) { }\n                }\n                else {\n                    // Primitive (IE) way\n                    let range = document.createRange();\n                    if (main.anchor > main.head)\n                        [anchor, head] = [head, anchor];\n                    range.setEnd(head.node, head.offset);\n                    range.setStart(anchor.node, anchor.offset);\n                    rawSel.removeAllRanges();\n                    rawSel.addRange(range);\n                }\n                if (selectionNotFocus && this.view.root.activeElement == this.dom) {\n                    this.dom.blur();\n                    if (activeElt)\n                        activeElt.focus();\n                }\n            });\n            this.view.observer.setSelectionRange(anchor, head);\n        }\n        this.impreciseAnchor = anchor.precise ? null : new DOMPos(domSel.anchorNode, domSel.anchorOffset);\n        this.impreciseHead = head.precise ? null : new DOMPos(domSel.focusNode, domSel.focusOffset);\n    }\n    // If a zero-length widget is inserted next to the cursor during\n    // composition, avoid moving it across it and disrupting the\n    // composition.\n    suppressWidgetCursorChange(sel, cursor) {\n        return this.hasComposition && cursor.empty &&\n            isEquivalentPosition(sel.focusNode, sel.focusOffset, sel.anchorNode, sel.anchorOffset) &&\n            this.posFromDOM(sel.focusNode, sel.focusOffset) == cursor.head;\n    }\n    enforceCursorAssoc() {\n        if (this.hasComposition)\n            return;\n        let { view } = this, cursor = view.state.selection.main;\n        let sel = getSelection(view.root);\n        let { anchorNode, anchorOffset } = view.observer.selectionRange;\n        if (!sel || !cursor.empty || !cursor.assoc || !sel.modify)\n            return;\n        let line = LineView.find(this, cursor.head);\n        if (!line)\n            return;\n        let lineStart = line.posAtStart;\n        if (cursor.head == lineStart || cursor.head == lineStart + line.length)\n            return;\n        let before = this.coordsAt(cursor.head, -1), after = this.coordsAt(cursor.head, 1);\n        if (!before || !after || before.bottom > after.top)\n            return;\n        let dom = this.domAtPos(cursor.head + cursor.assoc);\n        sel.collapse(dom.node, dom.offset);\n        sel.modify(\"move\", cursor.assoc < 0 ? \"forward\" : \"backward\", \"lineboundary\");\n        // This can go wrong in corner cases like single-character lines,\n        // so check and reset if necessary.\n        view.observer.readSelectionRange();\n        let newRange = view.observer.selectionRange;\n        if (view.docView.posFromDOM(newRange.anchorNode, newRange.anchorOffset) != cursor.from)\n            sel.collapse(anchorNode, anchorOffset);\n    }\n    // If a position is in/near a block widget, move it to a nearby text\n    // line, since we don't want the cursor inside a block widget.\n    moveToLine(pos) {\n        // Block widgets will return positions before/after them, which\n        // are thus directly in the document DOM element.\n        let dom = this.dom, newPos;\n        if (pos.node != dom)\n            return pos;\n        for (let i = pos.offset; !newPos && i < dom.childNodes.length; i++) {\n            let view = ContentView.get(dom.childNodes[i]);\n            if (view instanceof LineView)\n                newPos = view.domAtPos(0);\n        }\n        for (let i = pos.offset - 1; !newPos && i >= 0; i--) {\n            let view = ContentView.get(dom.childNodes[i]);\n            if (view instanceof LineView)\n                newPos = view.domAtPos(view.length);\n        }\n        return newPos ? new DOMPos(newPos.node, newPos.offset, true) : pos;\n    }\n    nearest(dom) {\n        for (let cur = dom; cur;) {\n            let domView = ContentView.get(cur);\n            if (domView && domView.rootView == this)\n                return domView;\n            cur = cur.parentNode;\n        }\n        return null;\n    }\n    posFromDOM(node, offset) {\n        let view = this.nearest(node);\n        if (!view)\n            throw new RangeError(\"Trying to find position for a DOM position outside of the document\");\n        return view.localPosFromDOM(node, offset) + view.posAtStart;\n    }\n    domAtPos(pos) {\n        let { i, off } = this.childCursor().findPos(pos, -1);\n        for (; i < this.children.length - 1;) {\n            let child = this.children[i];\n            if (off < child.length || child instanceof LineView)\n                break;\n            i++;\n            off = 0;\n        }\n        return this.children[i].domAtPos(off);\n    }\n    coordsAt(pos, side) {\n        let best = null, bestPos = 0;\n        for (let off = this.length, i = this.children.length - 1; i >= 0; i--) {\n            let child = this.children[i], end = off - child.breakAfter, start = end - child.length;\n            if (end < pos)\n                break;\n            if (start <= pos && (start < pos || child.covers(-1)) && (end > pos || child.covers(1)) &&\n                (!best || child instanceof LineView && !(best instanceof LineView && side >= 0))) {\n                best = child;\n                bestPos = start;\n            }\n            else if (best && start == pos && end == pos && child instanceof BlockWidgetView && Math.abs(side) < 2) {\n                if (child.deco.startSide < 0)\n                    break;\n                else if (i)\n                    best = null;\n            }\n            off = start;\n        }\n        return best ? best.coordsAt(pos - bestPos, side) : null;\n    }\n    coordsForChar(pos) {\n        let { i, off } = this.childPos(pos, 1), child = this.children[i];\n        if (!(child instanceof LineView))\n            return null;\n        while (child.children.length) {\n            let { i, off: childOff } = child.childPos(off, 1);\n            for (;; i++) {\n                if (i == child.children.length)\n                    return null;\n                if ((child = child.children[i]).length)\n                    break;\n            }\n            off = childOff;\n        }\n        if (!(child instanceof TextView))\n            return null;\n        let end = findClusterBreak(child.text, off);\n        if (end == off)\n            return null;\n        let rects = textRange(child.dom, off, end).getClientRects();\n        for (let i = 0; i < rects.length; i++) {\n            let rect = rects[i];\n            if (i == rects.length - 1 || rect.top < rect.bottom && rect.left < rect.right)\n                return rect;\n        }\n        return null;\n    }\n    measureVisibleLineHeights(viewport) {\n        let result = [], { from, to } = viewport;\n        let contentWidth = this.view.contentDOM.clientWidth;\n        let isWider = contentWidth > Math.max(this.view.scrollDOM.clientWidth, this.minWidth) + 1;\n        let widest = -1, ltr = this.view.textDirection == Direction.LTR;\n        for (let pos = 0, i = 0; i < this.children.length; i++) {\n            let child = this.children[i], end = pos + child.length;\n            if (end > to)\n                break;\n            if (pos >= from) {\n                let childRect = child.dom.getBoundingClientRect();\n                result.push(childRect.height);\n                if (isWider) {\n                    let last = child.dom.lastChild;\n                    let rects = last ? clientRectsFor(last) : [];\n                    if (rects.length) {\n                        let rect = rects[rects.length - 1];\n                        let width = ltr ? rect.right - childRect.left : childRect.right - rect.left;\n                        if (width > widest) {\n                            widest = width;\n                            this.minWidth = contentWidth;\n                            this.minWidthFrom = pos;\n                            this.minWidthTo = end;\n                        }\n                    }\n                }\n            }\n            pos = end + child.breakAfter;\n        }\n        return result;\n    }\n    textDirectionAt(pos) {\n        let { i } = this.childPos(pos, 1);\n        return getComputedStyle(this.children[i].dom).direction == \"rtl\" ? Direction.RTL : Direction.LTR;\n    }\n    measureTextSize() {\n        for (let child of this.children) {\n            if (child instanceof LineView) {\n                let measure = child.measureTextSize();\n                if (measure)\n                    return measure;\n            }\n        }\n        // If no workable line exists, force a layout of a measurable element\n        let dummy = document.createElement(\"div\"), lineHeight, charWidth, textHeight;\n        dummy.className = \"cm-line\";\n        dummy.style.width = \"99999px\";\n        dummy.style.position = \"absolute\";\n        dummy.textContent = \"abc def ghi jkl mno pqr stu\";\n        this.view.observer.ignore(() => {\n            this.dom.appendChild(dummy);\n            let rect = clientRectsFor(dummy.firstChild)[0];\n            lineHeight = dummy.getBoundingClientRect().height;\n            charWidth = rect ? rect.width / 27 : 7;\n            textHeight = rect ? rect.height : lineHeight;\n            dummy.remove();\n        });\n        return { lineHeight, charWidth, textHeight };\n    }\n    childCursor(pos = this.length) {\n        // Move back to start of last element when possible, so that\n        // `ChildCursor.findPos` doesn't have to deal with the edge case\n        // of being after the last element.\n        let i = this.children.length;\n        if (i)\n            pos -= this.children[--i].length;\n        return new ChildCursor(this.children, pos, i);\n    }\n    computeBlockGapDeco() {\n        let deco = [], vs = this.view.viewState;\n        for (let pos = 0, i = 0;; i++) {\n            let next = i == vs.viewports.length ? null : vs.viewports[i];\n            let end = next ? next.from - 1 : this.length;\n            if (end > pos) {\n                let height = (vs.lineBlockAt(end).bottom - vs.lineBlockAt(pos).top) / this.view.scaleY;\n                deco.push(Decoration.replace({\n                    widget: new BlockGapWidget(height),\n                    block: true,\n                    inclusive: true,\n                    isBlockGap: true,\n                }).range(pos, end));\n            }\n            if (!next)\n                break;\n            pos = next.to + 1;\n        }\n        return Decoration.set(deco);\n    }\n    updateDeco() {\n        let i = 1;\n        let allDeco = this.view.state.facet(decorations).map(d => {\n            let dynamic = this.dynamicDecorationMap[i++] = typeof d == \"function\";\n            return dynamic ? d(this.view) : d;\n        });\n        let dynamicOuter = false, outerDeco = this.view.state.facet(outerDecorations).map((d, i) => {\n            let dynamic = typeof d == \"function\";\n            if (dynamic)\n                dynamicOuter = true;\n            return dynamic ? d(this.view) : d;\n        });\n        if (outerDeco.length) {\n            this.dynamicDecorationMap[i++] = dynamicOuter;\n            allDeco.push(RangeSet.join(outerDeco));\n        }\n        this.decorations = [\n            this.editContextFormatting,\n            ...allDeco,\n            this.computeBlockGapDeco(),\n            this.view.viewState.lineGapDeco\n        ];\n        while (i < this.decorations.length)\n            this.dynamicDecorationMap[i++] = false;\n        return this.decorations;\n    }\n    scrollIntoView(target) {\n        if (target.isSnapshot) {\n            let ref = this.view.viewState.lineBlockAt(target.range.head);\n            this.view.scrollDOM.scrollTop = ref.top - target.yMargin;\n            this.view.scrollDOM.scrollLeft = target.xMargin;\n            return;\n        }\n        for (let handler of this.view.state.facet(scrollHandler)) {\n            try {\n                if (handler(this.view, target.range, target))\n                    return true;\n            }\n            catch (e) {\n                logException(this.view.state, e, \"scroll handler\");\n            }\n        }\n        let { range } = target;\n        let rect = this.coordsAt(range.head, range.empty ? range.assoc : range.head > range.anchor ? -1 : 1), other;\n        if (!rect)\n            return;\n        if (!range.empty && (other = this.coordsAt(range.anchor, range.anchor > range.head ? -1 : 1)))\n            rect = { left: Math.min(rect.left, other.left), top: Math.min(rect.top, other.top),\n                right: Math.max(rect.right, other.right), bottom: Math.max(rect.bottom, other.bottom) };\n        let margins = getScrollMargins(this.view);\n        let targetRect = {\n            left: rect.left - margins.left, top: rect.top - margins.top,\n            right: rect.right + margins.right, bottom: rect.bottom + margins.bottom\n        };\n        let { offsetWidth, offsetHeight } = this.view.scrollDOM;\n        scrollRectIntoView(this.view.scrollDOM, targetRect, range.head < range.anchor ? -1 : 1, target.x, target.y, Math.max(Math.min(target.xMargin, offsetWidth), -offsetWidth), Math.max(Math.min(target.yMargin, offsetHeight), -offsetHeight), this.view.textDirection == Direction.LTR);\n    }\n}\nfunction betweenUneditable(pos) {\n    return pos.node.nodeType == 1 && pos.node.firstChild &&\n        (pos.offset == 0 || pos.node.childNodes[pos.offset - 1].contentEditable == \"false\") &&\n        (pos.offset == pos.node.childNodes.length || pos.node.childNodes[pos.offset].contentEditable == \"false\");\n}\nfunction findCompositionNode(view, headPos) {\n    let sel = view.observer.selectionRange;\n    if (!sel.focusNode)\n        return null;\n    let textBefore = textNodeBefore(sel.focusNode, sel.focusOffset);\n    let textAfter = textNodeAfter(sel.focusNode, sel.focusOffset);\n    let textNode = textBefore || textAfter;\n    if (textAfter && textBefore && textAfter.node != textBefore.node) {\n        let descAfter = ContentView.get(textAfter.node);\n        if (!descAfter || descAfter instanceof TextView && descAfter.text != textAfter.node.nodeValue) {\n            textNode = textAfter;\n        }\n        else if (view.docView.lastCompositionAfterCursor) {\n            let descBefore = ContentView.get(textBefore.node);\n            if (!(!descBefore || descBefore instanceof TextView && descBefore.text != textBefore.node.nodeValue))\n                textNode = textAfter;\n        }\n    }\n    view.docView.lastCompositionAfterCursor = textNode != textBefore;\n    if (!textNode)\n        return null;\n    let from = headPos - textNode.offset;\n    return { from, to: from + textNode.node.nodeValue.length, node: textNode.node };\n}\nfunction findCompositionRange(view, changes, headPos) {\n    let found = findCompositionNode(view, headPos);\n    if (!found)\n        return null;\n    let { node: textNode, from, to } = found, text = textNode.nodeValue;\n    // Don't try to preserve multi-line compositions\n    if (/[\\n\\r]/.test(text))\n        return null;\n    if (view.state.doc.sliceString(found.from, found.to) != text)\n        return null;\n    let inv = changes.invertedDesc;\n    let range = new ChangedRange(inv.mapPos(from), inv.mapPos(to), from, to);\n    let marks = [];\n    for (let parent = textNode.parentNode;; parent = parent.parentNode) {\n        let parentView = ContentView.get(parent);\n        if (parentView instanceof MarkView)\n            marks.push({ node: parent, deco: parentView.mark });\n        else if (parentView instanceof LineView || parent.nodeName == \"DIV\" && parent.parentNode == view.contentDOM)\n            return { range, text: textNode, marks, line: parent };\n        else if (parent != view.contentDOM)\n            marks.push({ node: parent, deco: new MarkDecoration({\n                    inclusive: true,\n                    attributes: getAttrs(parent),\n                    tagName: parent.tagName.toLowerCase()\n                }) });\n        else\n            return null;\n    }\n}\nfunction nextToUneditable(node, offset) {\n    if (node.nodeType != 1)\n        return 0;\n    return (offset && node.childNodes[offset - 1].contentEditable == \"false\" ? 1 /* NextTo.Before */ : 0) |\n        (offset < node.childNodes.length && node.childNodes[offset].contentEditable == \"false\" ? 2 /* NextTo.After */ : 0);\n}\nlet DecorationComparator$1 = class DecorationComparator {\n    constructor() {\n        this.changes = [];\n    }\n    compareRange(from, to) { addRange(from, to, this.changes); }\n    comparePoint(from, to) { addRange(from, to, this.changes); }\n};\nfunction findChangedDeco(a, b, diff) {\n    let comp = new DecorationComparator$1;\n    RangeSet.compare(a, b, diff, comp);\n    return comp.changes;\n}\nfunction inUneditable(node, inside) {\n    for (let cur = node; cur && cur != inside; cur = cur.assignedSlot || cur.parentNode) {\n        if (cur.nodeType == 1 && cur.contentEditable == 'false') {\n            return true;\n        }\n    }\n    return false;\n}\nfunction touchesComposition(changes, composition) {\n    let touched = false;\n    if (composition)\n        changes.iterChangedRanges((from, to) => {\n            if (from < composition.to && to > composition.from)\n                touched = true;\n        });\n    return touched;\n}\n\nfunction groupAt(state, pos, bias = 1) {\n    let categorize = state.charCategorizer(pos);\n    let line = state.doc.lineAt(pos), linePos = pos - line.from;\n    if (line.length == 0)\n        return EditorSelection.cursor(pos);\n    if (linePos == 0)\n        bias = 1;\n    else if (linePos == line.length)\n        bias = -1;\n    let from = linePos, to = linePos;\n    if (bias < 0)\n        from = findClusterBreak(line.text, linePos, false);\n    else\n        to = findClusterBreak(line.text, linePos);\n    let cat = categorize(line.text.slice(from, to));\n    while (from > 0) {\n        let prev = findClusterBreak(line.text, from, false);\n        if (categorize(line.text.slice(prev, from)) != cat)\n            break;\n        from = prev;\n    }\n    while (to < line.length) {\n        let next = findClusterBreak(line.text, to);\n        if (categorize(line.text.slice(to, next)) != cat)\n            break;\n        to = next;\n    }\n    return EditorSelection.range(from + line.from, to + line.from);\n}\n// Search the DOM for the {node, offset} position closest to the given\n// coordinates. Very inefficient and crude, but can usually be avoided\n// by calling caret(Position|Range)FromPoint instead.\nfunction getdx(x, rect) {\n    return rect.left > x ? rect.left - x : Math.max(0, x - rect.right);\n}\nfunction getdy(y, rect) {\n    return rect.top > y ? rect.top - y : Math.max(0, y - rect.bottom);\n}\nfunction yOverlap(a, b) {\n    return a.top < b.bottom - 1 && a.bottom > b.top + 1;\n}\nfunction upTop(rect, top) {\n    return top < rect.top ? { top, left: rect.left, right: rect.right, bottom: rect.bottom } : rect;\n}\nfunction upBot(rect, bottom) {\n    return bottom > rect.bottom ? { top: rect.top, left: rect.left, right: rect.right, bottom } : rect;\n}\nfunction domPosAtCoords(parent, x, y) {\n    let closest, closestRect, closestX, closestY, closestOverlap = false;\n    let above, below, aboveRect, belowRect;\n    for (let child = parent.firstChild; child; child = child.nextSibling) {\n        let rects = clientRectsFor(child);\n        for (let i = 0; i < rects.length; i++) {\n            let rect = rects[i];\n            if (closestRect && yOverlap(closestRect, rect))\n                rect = upTop(upBot(rect, closestRect.bottom), closestRect.top);\n            let dx = getdx(x, rect), dy = getdy(y, rect);\n            if (dx == 0 && dy == 0)\n                return child.nodeType == 3 ? domPosInText(child, x, y) : domPosAtCoords(child, x, y);\n            if (!closest || closestY > dy || closestY == dy && closestX > dx) {\n                closest = child;\n                closestRect = rect;\n                closestX = dx;\n                closestY = dy;\n                let side = dy ? (y < rect.top ? -1 : 1) : dx ? (x < rect.left ? -1 : 1) : 0;\n                closestOverlap = !side || (side > 0 ? i < rects.length - 1 : i > 0);\n            }\n            if (dx == 0) {\n                if (y > rect.bottom && (!aboveRect || aboveRect.bottom < rect.bottom)) {\n                    above = child;\n                    aboveRect = rect;\n                }\n                else if (y < rect.top && (!belowRect || belowRect.top > rect.top)) {\n                    below = child;\n                    belowRect = rect;\n                }\n            }\n            else if (aboveRect && yOverlap(aboveRect, rect)) {\n                aboveRect = upBot(aboveRect, rect.bottom);\n            }\n            else if (belowRect && yOverlap(belowRect, rect)) {\n                belowRect = upTop(belowRect, rect.top);\n            }\n        }\n    }\n    if (aboveRect && aboveRect.bottom >= y) {\n        closest = above;\n        closestRect = aboveRect;\n    }\n    else if (belowRect && belowRect.top <= y) {\n        closest = below;\n        closestRect = belowRect;\n    }\n    if (!closest)\n        return { node: parent, offset: 0 };\n    let clipX = Math.max(closestRect.left, Math.min(closestRect.right, x));\n    if (closest.nodeType == 3)\n        return domPosInText(closest, clipX, y);\n    if (closestOverlap && closest.contentEditable != \"false\")\n        return domPosAtCoords(closest, clipX, y);\n    let offset = Array.prototype.indexOf.call(parent.childNodes, closest) +\n        (x >= (closestRect.left + closestRect.right) / 2 ? 1 : 0);\n    return { node: parent, offset };\n}\nfunction domPosInText(node, x, y) {\n    let len = node.nodeValue.length;\n    let closestOffset = -1, closestDY = 1e9, generalSide = 0;\n    for (let i = 0; i < len; i++) {\n        let rects = textRange(node, i, i + 1).getClientRects();\n        for (let j = 0; j < rects.length; j++) {\n            let rect = rects[j];\n            if (rect.top == rect.bottom)\n                continue;\n            if (!generalSide)\n                generalSide = x - rect.left;\n            let dy = (rect.top > y ? rect.top - y : y - rect.bottom) - 1;\n            if (rect.left - 1 <= x && rect.right + 1 >= x && dy < closestDY) {\n                let right = x >= (rect.left + rect.right) / 2, after = right;\n                if (browser.chrome || browser.gecko) {\n                    // Check for RTL on browsers that support getting client\n                    // rects for empty ranges.\n                    let rectBefore = textRange(node, i).getBoundingClientRect();\n                    if (rectBefore.left == rect.right)\n                        after = !right;\n                }\n                if (dy <= 0)\n                    return { node, offset: i + (after ? 1 : 0) };\n                closestOffset = i + (after ? 1 : 0);\n                closestDY = dy;\n            }\n        }\n    }\n    return { node, offset: closestOffset > -1 ? closestOffset : generalSide > 0 ? node.nodeValue.length : 0 };\n}\nfunction posAtCoords(view, coords, precise, bias = -1) {\n    var _a, _b;\n    let content = view.contentDOM.getBoundingClientRect(), docTop = content.top + view.viewState.paddingTop;\n    let block, { docHeight } = view.viewState;\n    let { x, y } = coords, yOffset = y - docTop;\n    if (yOffset < 0)\n        return 0;\n    if (yOffset > docHeight)\n        return view.state.doc.length;\n    // Scan for a text block near the queried y position\n    for (let halfLine = view.viewState.heightOracle.textHeight / 2, bounced = false;;) {\n        block = view.elementAtHeight(yOffset);\n        if (block.type == BlockType.Text)\n            break;\n        for (;;) {\n            // Move the y position out of this block\n            yOffset = bias > 0 ? block.bottom + halfLine : block.top - halfLine;\n            if (yOffset >= 0 && yOffset <= docHeight)\n                break;\n            // If the document consists entirely of replaced widgets, we\n            // won't find a text block, so return 0\n            if (bounced)\n                return precise ? null : 0;\n            bounced = true;\n            bias = -bias;\n        }\n    }\n    y = docTop + yOffset;\n    let lineStart = block.from;\n    // If this is outside of the rendered viewport, we can't determine a position\n    if (lineStart < view.viewport.from)\n        return view.viewport.from == 0 ? 0 : precise ? null : posAtCoordsImprecise(view, content, block, x, y);\n    if (lineStart > view.viewport.to)\n        return view.viewport.to == view.state.doc.length ? view.state.doc.length :\n            precise ? null : posAtCoordsImprecise(view, content, block, x, y);\n    // Prefer ShadowRootOrDocument.elementFromPoint if present, fall back to document if not\n    let doc = view.dom.ownerDocument;\n    let root = view.root.elementFromPoint ? view.root : doc;\n    let element = root.elementFromPoint(x, y);\n    if (element && !view.contentDOM.contains(element))\n        element = null;\n    // If the element is unexpected, clip x at the sides of the content area and try again\n    if (!element) {\n        x = Math.max(content.left + 1, Math.min(content.right - 1, x));\n        element = root.elementFromPoint(x, y);\n        if (element && !view.contentDOM.contains(element))\n            element = null;\n    }\n    // There's visible editor content under the point, so we can try\n    // using caret(Position|Range)FromPoint as a shortcut\n    let node, offset = -1;\n    if (element && ((_a = view.docView.nearest(element)) === null || _a === void 0 ? void 0 : _a.isEditable) != false) {\n        if (doc.caretPositionFromPoint) {\n            let pos = doc.caretPositionFromPoint(x, y);\n            if (pos)\n                ({ offsetNode: node, offset } = pos);\n        }\n        else if (doc.caretRangeFromPoint) {\n            let range = doc.caretRangeFromPoint(x, y);\n            if (range) {\n                ({ startContainer: node, startOffset: offset } = range);\n                if (!view.contentDOM.contains(node) ||\n                    browser.safari && isSuspiciousSafariCaretResult(node, offset, x) ||\n                    browser.chrome && isSuspiciousChromeCaretResult(node, offset, x))\n                    node = undefined;\n            }\n        }\n        // Chrome will return offsets into <input> elements without child\n        // nodes, which will lead to a null deref below, so clip the\n        // offset to the node size.\n        if (node)\n            offset = Math.min(maxOffset(node), offset);\n    }\n    // No luck, do our own (potentially expensive) search\n    if (!node || !view.docView.dom.contains(node)) {\n        let line = LineView.find(view.docView, lineStart);\n        if (!line)\n            return yOffset > block.top + block.height / 2 ? block.to : block.from;\n        ({ node, offset } = domPosAtCoords(line.dom, x, y));\n    }\n    let nearest = view.docView.nearest(node);\n    if (!nearest)\n        return null;\n    if (nearest.isWidget && ((_b = nearest.dom) === null || _b === void 0 ? void 0 : _b.nodeType) == 1) {\n        let rect = nearest.dom.getBoundingClientRect();\n        return coords.y < rect.top || coords.y <= rect.bottom && coords.x <= (rect.left + rect.right) / 2\n            ? nearest.posAtStart : nearest.posAtEnd;\n    }\n    else {\n        return nearest.localPosFromDOM(node, offset) + nearest.posAtStart;\n    }\n}\nfunction posAtCoordsImprecise(view, contentRect, block, x, y) {\n    let into = Math.round((x - contentRect.left) * view.defaultCharacterWidth);\n    if (view.lineWrapping && block.height > view.defaultLineHeight * 1.5) {\n        let textHeight = view.viewState.heightOracle.textHeight;\n        let line = Math.floor((y - block.top - (view.defaultLineHeight - textHeight) * 0.5) / textHeight);\n        into += line * view.viewState.heightOracle.lineLength;\n    }\n    let content = view.state.sliceDoc(block.from, block.to);\n    return block.from + findColumn(content, into, view.state.tabSize);\n}\n// In case of a high line height, Safari's caretRangeFromPoint treats\n// the space between lines as belonging to the last character of the\n// line before. This is used to detect such a result so that it can be\n// ignored (issue #401).\nfunction isSuspiciousSafariCaretResult(node, offset, x) {\n    let len;\n    if (node.nodeType != 3 || offset != (len = node.nodeValue.length))\n        return false;\n    for (let next = node.nextSibling; next; next = next.nextSibling)\n        if (next.nodeType != 1 || next.nodeName != \"BR\")\n            return false;\n    return textRange(node, len - 1, len).getBoundingClientRect().left > x;\n}\n// Chrome will move positions between lines to the start of the next line\nfunction isSuspiciousChromeCaretResult(node, offset, x) {\n    if (offset != 0)\n        return false;\n    for (let cur = node;;) {\n        let parent = cur.parentNode;\n        if (!parent || parent.nodeType != 1 || parent.firstChild != cur)\n            return false;\n        if (parent.classList.contains(\"cm-line\"))\n            break;\n        cur = parent;\n    }\n    let rect = node.nodeType == 1 ? node.getBoundingClientRect()\n        : textRange(node, 0, Math.max(node.nodeValue.length, 1)).getBoundingClientRect();\n    return x - rect.left > 5;\n}\nfunction blockAt(view, pos) {\n    let line = view.lineBlockAt(pos);\n    if (Array.isArray(line.type))\n        for (let l of line.type) {\n            if (l.to > pos || l.to == pos && (l.to == line.to || l.type == BlockType.Text))\n                return l;\n        }\n    return line;\n}\nfunction moveToLineBoundary(view, start, forward, includeWrap) {\n    let line = blockAt(view, start.head);\n    let coords = !includeWrap || line.type != BlockType.Text || !(view.lineWrapping || line.widgetLineBreaks) ? null\n        : view.coordsAtPos(start.assoc < 0 && start.head > line.from ? start.head - 1 : start.head);\n    if (coords) {\n        let editorRect = view.dom.getBoundingClientRect();\n        let direction = view.textDirectionAt(line.from);\n        let pos = view.posAtCoords({ x: forward == (direction == Direction.LTR) ? editorRect.right - 1 : editorRect.left + 1,\n            y: (coords.top + coords.bottom) / 2 });\n        if (pos != null)\n            return EditorSelection.cursor(pos, forward ? -1 : 1);\n    }\n    return EditorSelection.cursor(forward ? line.to : line.from, forward ? -1 : 1);\n}\nfunction moveByChar(view, start, forward, by) {\n    let line = view.state.doc.lineAt(start.head), spans = view.bidiSpans(line);\n    let direction = view.textDirectionAt(line.from);\n    for (let cur = start, check = null;;) {\n        let next = moveVisually(line, spans, direction, cur, forward), char = movedOver;\n        if (!next) {\n            if (line.number == (forward ? view.state.doc.lines : 1))\n                return cur;\n            char = \"\\n\";\n            line = view.state.doc.line(line.number + (forward ? 1 : -1));\n            spans = view.bidiSpans(line);\n            next = view.visualLineSide(line, !forward);\n        }\n        if (!check) {\n            if (!by)\n                return next;\n            check = by(char);\n        }\n        else if (!check(char)) {\n            return cur;\n        }\n        cur = next;\n    }\n}\nfunction byGroup(view, pos, start) {\n    let categorize = view.state.charCategorizer(pos);\n    let cat = categorize(start);\n    return (next) => {\n        let nextCat = categorize(next);\n        if (cat == CharCategory.Space)\n            cat = nextCat;\n        return cat == nextCat;\n    };\n}\nfunction moveVertically(view, start, forward, distance) {\n    let startPos = start.head, dir = forward ? 1 : -1;\n    if (startPos == (forward ? view.state.doc.length : 0))\n        return EditorSelection.cursor(startPos, start.assoc);\n    let goal = start.goalColumn, startY;\n    let rect = view.contentDOM.getBoundingClientRect();\n    let startCoords = view.coordsAtPos(startPos, start.assoc || -1), docTop = view.documentTop;\n    if (startCoords) {\n        if (goal == null)\n            goal = startCoords.left - rect.left;\n        startY = dir < 0 ? startCoords.top : startCoords.bottom;\n    }\n    else {\n        let line = view.viewState.lineBlockAt(startPos);\n        if (goal == null)\n            goal = Math.min(rect.right - rect.left, view.defaultCharacterWidth * (startPos - line.from));\n        startY = (dir < 0 ? line.top : line.bottom) + docTop;\n    }\n    let resolvedGoal = rect.left + goal;\n    let dist = distance !== null && distance !== void 0 ? distance : (view.viewState.heightOracle.textHeight >> 1);\n    for (let extra = 0;; extra += 10) {\n        let curY = startY + (dist + extra) * dir;\n        let pos = posAtCoords(view, { x: resolvedGoal, y: curY }, false, dir);\n        if (curY < rect.top || curY > rect.bottom || (dir < 0 ? pos < startPos : pos > startPos)) {\n            let charRect = view.docView.coordsForChar(pos);\n            let assoc = !charRect || curY < charRect.top ? -1 : 1;\n            return EditorSelection.cursor(pos, assoc, undefined, goal);\n        }\n    }\n}\nfunction skipAtomicRanges(atoms, pos, bias) {\n    for (;;) {\n        let moved = 0;\n        for (let set of atoms) {\n            set.between(pos - 1, pos + 1, (from, to, value) => {\n                if (pos > from && pos < to) {\n                    let side = moved || bias || (pos - from < to - pos ? -1 : 1);\n                    pos = side < 0 ? from : to;\n                    moved = side;\n                }\n            });\n        }\n        if (!moved)\n            return pos;\n    }\n}\nfunction skipAtoms(view, oldPos, pos) {\n    let newPos = skipAtomicRanges(view.state.facet(atomicRanges).map(f => f(view)), pos.from, oldPos.head > pos.from ? -1 : 1);\n    return newPos == pos.from ? pos : EditorSelection.cursor(newPos, newPos < pos.from ? 1 : -1);\n}\n\nconst LineBreakPlaceholder = \"\\uffff\";\nclass DOMReader {\n    constructor(points, state) {\n        this.points = points;\n        this.text = \"\";\n        this.lineSeparator = state.facet(EditorState.lineSeparator);\n    }\n    append(text) {\n        this.text += text;\n    }\n    lineBreak() {\n        this.text += LineBreakPlaceholder;\n    }\n    readRange(start, end) {\n        if (!start)\n            return this;\n        let parent = start.parentNode;\n        for (let cur = start;;) {\n            this.findPointBefore(parent, cur);\n            let oldLen = this.text.length;\n            this.readNode(cur);\n            let next = cur.nextSibling;\n            if (next == end)\n                break;\n            let view = ContentView.get(cur), nextView = ContentView.get(next);\n            if (view && nextView ? view.breakAfter :\n                (view ? view.breakAfter : isBlockElement(cur)) ||\n                    (isBlockElement(next) && (cur.nodeName != \"BR\" || cur.cmIgnore) && this.text.length > oldLen))\n                this.lineBreak();\n            cur = next;\n        }\n        this.findPointBefore(parent, end);\n        return this;\n    }\n    readTextNode(node) {\n        let text = node.nodeValue;\n        for (let point of this.points)\n            if (point.node == node)\n                point.pos = this.text.length + Math.min(point.offset, text.length);\n        for (let off = 0, re = this.lineSeparator ? null : /\\r\\n?|\\n/g;;) {\n            let nextBreak = -1, breakSize = 1, m;\n            if (this.lineSeparator) {\n                nextBreak = text.indexOf(this.lineSeparator, off);\n                breakSize = this.lineSeparator.length;\n            }\n            else if (m = re.exec(text)) {\n                nextBreak = m.index;\n                breakSize = m[0].length;\n            }\n            this.append(text.slice(off, nextBreak < 0 ? text.length : nextBreak));\n            if (nextBreak < 0)\n                break;\n            this.lineBreak();\n            if (breakSize > 1)\n                for (let point of this.points)\n                    if (point.node == node && point.pos > this.text.length)\n                        point.pos -= breakSize - 1;\n            off = nextBreak + breakSize;\n        }\n    }\n    readNode(node) {\n        if (node.cmIgnore)\n            return;\n        let view = ContentView.get(node);\n        let fromView = view && view.overrideDOMText;\n        if (fromView != null) {\n            this.findPointInside(node, fromView.length);\n            for (let i = fromView.iter(); !i.next().done;) {\n                if (i.lineBreak)\n                    this.lineBreak();\n                else\n                    this.append(i.value);\n            }\n        }\n        else if (node.nodeType == 3) {\n            this.readTextNode(node);\n        }\n        else if (node.nodeName == \"BR\") {\n            if (node.nextSibling)\n                this.lineBreak();\n        }\n        else if (node.nodeType == 1) {\n            this.readRange(node.firstChild, null);\n        }\n    }\n    findPointBefore(node, next) {\n        for (let point of this.points)\n            if (point.node == node && node.childNodes[point.offset] == next)\n                point.pos = this.text.length;\n    }\n    findPointInside(node, length) {\n        for (let point of this.points)\n            if (node.nodeType == 3 ? point.node == node : node.contains(point.node))\n                point.pos = this.text.length + (isAtEnd(node, point.node, point.offset) ? length : 0);\n    }\n}\nfunction isAtEnd(parent, node, offset) {\n    for (;;) {\n        if (!node || offset < maxOffset(node))\n            return false;\n        if (node == parent)\n            return true;\n        offset = domIndex(node) + 1;\n        node = node.parentNode;\n    }\n}\nclass DOMPoint {\n    constructor(node, offset) {\n        this.node = node;\n        this.offset = offset;\n        this.pos = -1;\n    }\n}\n\nclass DOMChange {\n    constructor(view, start, end, typeOver) {\n        this.typeOver = typeOver;\n        this.bounds = null;\n        this.text = \"\";\n        this.domChanged = start > -1;\n        let { impreciseHead: iHead, impreciseAnchor: iAnchor } = view.docView;\n        if (view.state.readOnly && start > -1) {\n            // Ignore changes when the editor is read-only\n            this.newSel = null;\n        }\n        else if (start > -1 && (this.bounds = view.docView.domBoundsAround(start, end, 0))) {\n            let selPoints = iHead || iAnchor ? [] : selectionPoints(view);\n            let reader = new DOMReader(selPoints, view.state);\n            reader.readRange(this.bounds.startDOM, this.bounds.endDOM);\n            this.text = reader.text;\n            this.newSel = selectionFromPoints(selPoints, this.bounds.from);\n        }\n        else {\n            let domSel = view.observer.selectionRange;\n            let head = iHead && iHead.node == domSel.focusNode && iHead.offset == domSel.focusOffset ||\n                !contains(view.contentDOM, domSel.focusNode)\n                ? view.state.selection.main.head\n                : view.docView.posFromDOM(domSel.focusNode, domSel.focusOffset);\n            let anchor = iAnchor && iAnchor.node == domSel.anchorNode && iAnchor.offset == domSel.anchorOffset ||\n                !contains(view.contentDOM, domSel.anchorNode)\n                ? view.state.selection.main.anchor\n                : view.docView.posFromDOM(domSel.anchorNode, domSel.anchorOffset);\n            // iOS will refuse to select the block gaps when doing\n            // select-all.\n            // Chrome will put the selection *inside* them, confusing\n            // posFromDOM\n            let vp = view.viewport;\n            if ((browser.ios || browser.chrome) && view.state.selection.main.empty && head != anchor &&\n                (vp.from > 0 || vp.to < view.state.doc.length)) {\n                let from = Math.min(head, anchor), to = Math.max(head, anchor);\n                let offFrom = vp.from - from, offTo = vp.to - to;\n                if ((offFrom == 0 || offFrom == 1 || from == 0) && (offTo == 0 || offTo == -1 || to == view.state.doc.length)) {\n                    head = 0;\n                    anchor = view.state.doc.length;\n                }\n            }\n            this.newSel = EditorSelection.single(anchor, head);\n        }\n    }\n}\nfunction applyDOMChange(view, domChange) {\n    let change;\n    let { newSel } = domChange, sel = view.state.selection.main;\n    let lastKey = view.inputState.lastKeyTime > Date.now() - 100 ? view.inputState.lastKeyCode : -1;\n    if (domChange.bounds) {\n        let { from, to } = domChange.bounds;\n        let preferredPos = sel.from, preferredSide = null;\n        // Prefer anchoring to end when Backspace is pressed (or, on\n        // Android, when something was deleted)\n        if (lastKey === 8 || browser.android && domChange.text.length < to - from) {\n            preferredPos = sel.to;\n            preferredSide = \"end\";\n        }\n        let diff = findDiff(view.state.doc.sliceString(from, to, LineBreakPlaceholder), domChange.text, preferredPos - from, preferredSide);\n        if (diff) {\n            // Chrome inserts two newlines when pressing shift-enter at the\n            // end of a line. DomChange drops one of those.\n            if (browser.chrome && lastKey == 13 &&\n                diff.toB == diff.from + 2 && domChange.text.slice(diff.from, diff.toB) == LineBreakPlaceholder + LineBreakPlaceholder)\n                diff.toB--;\n            change = { from: from + diff.from, to: from + diff.toA,\n                insert: Text.of(domChange.text.slice(diff.from, diff.toB).split(LineBreakPlaceholder)) };\n        }\n    }\n    else if (newSel && (!view.hasFocus && view.state.facet(editable) || newSel.main.eq(sel))) {\n        newSel = null;\n    }\n    if (!change && !newSel)\n        return false;\n    if (!change && domChange.typeOver && !sel.empty && newSel && newSel.main.empty) {\n        // Heuristic to notice typing over a selected character\n        change = { from: sel.from, to: sel.to, insert: view.state.doc.slice(sel.from, sel.to) };\n    }\n    else if (change && change.from >= sel.from && change.to <= sel.to &&\n        (change.from != sel.from || change.to != sel.to) &&\n        (sel.to - sel.from) - (change.to - change.from) <= 4) {\n        // If the change is inside the selection and covers most of it,\n        // assume it is a selection replace (with identical characters at\n        // the start/end not included in the diff)\n        change = {\n            from: sel.from, to: sel.to,\n            insert: view.state.doc.slice(sel.from, change.from).append(change.insert).append(view.state.doc.slice(change.to, sel.to))\n        };\n    }\n    else if ((browser.mac || browser.android) && change && change.from == change.to && change.from == sel.head - 1 &&\n        /^\\. ?$/.test(change.insert.toString()) && view.contentDOM.getAttribute(\"autocorrect\") == \"off\") {\n        // Detect insert-period-on-double-space Mac and Android behavior,\n        // and transform it into a regular space insert.\n        if (newSel && change.insert.length == 2)\n            newSel = EditorSelection.single(newSel.main.anchor - 1, newSel.main.head - 1);\n        change = { from: sel.from, to: sel.to, insert: Text.of([\" \"]) };\n    }\n    else if (browser.chrome && change && change.from == change.to && change.from == sel.head &&\n        change.insert.toString() == \"\\n \" && view.lineWrapping) {\n        // In Chrome, if you insert a space at the start of a wrapped\n        // line, it will actually insert a newline and a space, causing a\n        // bogus new line to be created in CodeMirror (#968)\n        if (newSel)\n            newSel = EditorSelection.single(newSel.main.anchor - 1, newSel.main.head - 1);\n        change = { from: sel.from, to: sel.to, insert: Text.of([\" \"]) };\n    }\n    if (change) {\n        return applyDOMChangeInner(view, change, newSel, lastKey);\n    }\n    else if (newSel && !newSel.main.eq(sel)) {\n        let scrollIntoView = false, userEvent = \"select\";\n        if (view.inputState.lastSelectionTime > Date.now() - 50) {\n            if (view.inputState.lastSelectionOrigin == \"select\")\n                scrollIntoView = true;\n            userEvent = view.inputState.lastSelectionOrigin;\n        }\n        view.dispatch({ selection: newSel, scrollIntoView, userEvent });\n        return true;\n    }\n    else {\n        return false;\n    }\n}\nfunction applyDOMChangeInner(view, change, newSel, lastKey = -1) {\n    if (browser.ios && view.inputState.flushIOSKey(change))\n        return true;\n    let sel = view.state.selection.main;\n    // Android browsers don't fire reasonable key events for enter,\n    // backspace, or delete. So this detects changes that look like\n    // they're caused by those keys, and reinterprets them as key\n    // events. (Some of these keys are also handled by beforeinput\n    // events and the pendingAndroidKey mechanism, but that's not\n    // reliable in all situations.)\n    if (browser.android &&\n        ((change.to == sel.to &&\n            // GBoard will sometimes remove a space it just inserted\n            // after a completion when you press enter\n            (change.from == sel.from || change.from == sel.from - 1 && view.state.sliceDoc(change.from, sel.from) == \" \") &&\n            change.insert.length == 1 && change.insert.lines == 2 &&\n            dispatchKey(view.contentDOM, \"Enter\", 13)) ||\n            ((change.from == sel.from - 1 && change.to == sel.to && change.insert.length == 0 ||\n                lastKey == 8 && change.insert.length < change.to - change.from && change.to > sel.head) &&\n                dispatchKey(view.contentDOM, \"Backspace\", 8)) ||\n            (change.from == sel.from && change.to == sel.to + 1 && change.insert.length == 0 &&\n                dispatchKey(view.contentDOM, \"Delete\", 46))))\n        return true;\n    let text = change.insert.toString();\n    if (view.inputState.composing >= 0)\n        view.inputState.composing++;\n    let defaultTr;\n    let defaultInsert = () => defaultTr || (defaultTr = applyDefaultInsert(view, change, newSel));\n    if (!view.state.facet(inputHandler).some(h => h(view, change.from, change.to, text, defaultInsert)))\n        view.dispatch(defaultInsert());\n    return true;\n}\nfunction applyDefaultInsert(view, change, newSel) {\n    let tr, startState = view.state, sel = startState.selection.main;\n    if (change.from >= sel.from && change.to <= sel.to && change.to - change.from >= (sel.to - sel.from) / 3 &&\n        (!newSel || newSel.main.empty && newSel.main.from == change.from + change.insert.length) &&\n        view.inputState.composing < 0) {\n        let before = sel.from < change.from ? startState.sliceDoc(sel.from, change.from) : \"\";\n        let after = sel.to > change.to ? startState.sliceDoc(change.to, sel.to) : \"\";\n        tr = startState.replaceSelection(view.state.toText(before + change.insert.sliceString(0, undefined, view.state.lineBreak) + after));\n    }\n    else {\n        let changes = startState.changes(change);\n        let mainSel = newSel && newSel.main.to <= changes.newLength ? newSel.main : undefined;\n        // Try to apply a composition change to all cursors\n        if (startState.selection.ranges.length > 1 && view.inputState.composing >= 0 &&\n            change.to <= sel.to && change.to >= sel.to - 10) {\n            let replaced = view.state.sliceDoc(change.from, change.to);\n            let compositionRange, composition = newSel && findCompositionNode(view, newSel.main.head);\n            if (composition) {\n                let dLen = change.insert.length - (change.to - change.from);\n                compositionRange = { from: composition.from, to: composition.to - dLen };\n            }\n            else {\n                compositionRange = view.state.doc.lineAt(sel.head);\n            }\n            let offset = sel.to - change.to, size = sel.to - sel.from;\n            tr = startState.changeByRange(range => {\n                if (range.from == sel.from && range.to == sel.to)\n                    return { changes, range: mainSel || range.map(changes) };\n                let to = range.to - offset, from = to - replaced.length;\n                if (range.to - range.from != size || view.state.sliceDoc(from, to) != replaced ||\n                    // Unfortunately, there's no way to make multiple\n                    // changes in the same node work without aborting\n                    // composition, so cursors in the composition range are\n                    // ignored.\n                    range.to >= compositionRange.from && range.from <= compositionRange.to)\n                    return { range };\n                let rangeChanges = startState.changes({ from, to, insert: change.insert }), selOff = range.to - sel.to;\n                return {\n                    changes: rangeChanges,\n                    range: !mainSel ? range.map(rangeChanges) :\n                        EditorSelection.range(Math.max(0, mainSel.anchor + selOff), Math.max(0, mainSel.head + selOff))\n                };\n            });\n        }\n        else {\n            tr = {\n                changes,\n                selection: mainSel && startState.selection.replaceRange(mainSel)\n            };\n        }\n    }\n    let userEvent = \"input.type\";\n    if (view.composing ||\n        view.inputState.compositionPendingChange && view.inputState.compositionEndedAt > Date.now() - 50) {\n        view.inputState.compositionPendingChange = false;\n        userEvent += \".compose\";\n        if (view.inputState.compositionFirstChange) {\n            userEvent += \".start\";\n            view.inputState.compositionFirstChange = false;\n        }\n    }\n    return startState.update(tr, { userEvent, scrollIntoView: true });\n}\nfunction findDiff(a, b, preferredPos, preferredSide) {\n    let minLen = Math.min(a.length, b.length);\n    let from = 0;\n    while (from < minLen && a.charCodeAt(from) == b.charCodeAt(from))\n        from++;\n    if (from == minLen && a.length == b.length)\n        return null;\n    let toA = a.length, toB = b.length;\n    while (toA > 0 && toB > 0 && a.charCodeAt(toA - 1) == b.charCodeAt(toB - 1)) {\n        toA--;\n        toB--;\n    }\n    if (preferredSide == \"end\") {\n        let adjust = Math.max(0, from - Math.min(toA, toB));\n        preferredPos -= toA + adjust - from;\n    }\n    if (toA < from && a.length < b.length) {\n        let move = preferredPos <= from && preferredPos >= toA ? from - preferredPos : 0;\n        from -= move;\n        toB = from + (toB - toA);\n        toA = from;\n    }\n    else if (toB < from) {\n        let move = preferredPos <= from && preferredPos >= toB ? from - preferredPos : 0;\n        from -= move;\n        toA = from + (toA - toB);\n        toB = from;\n    }\n    return { from, toA, toB };\n}\nfunction selectionPoints(view) {\n    let result = [];\n    if (view.root.activeElement != view.contentDOM)\n        return result;\n    let { anchorNode, anchorOffset, focusNode, focusOffset } = view.observer.selectionRange;\n    if (anchorNode) {\n        result.push(new DOMPoint(anchorNode, anchorOffset));\n        if (focusNode != anchorNode || focusOffset != anchorOffset)\n            result.push(new DOMPoint(focusNode, focusOffset));\n    }\n    return result;\n}\nfunction selectionFromPoints(points, base) {\n    if (points.length == 0)\n        return null;\n    let anchor = points[0].pos, head = points.length == 2 ? points[1].pos : anchor;\n    return anchor > -1 && head > -1 ? EditorSelection.single(anchor + base, head + base) : null;\n}\n\nclass InputState {\n    setSelectionOrigin(origin) {\n        this.lastSelectionOrigin = origin;\n        this.lastSelectionTime = Date.now();\n    }\n    constructor(view) {\n        this.view = view;\n        this.lastKeyCode = 0;\n        this.lastKeyTime = 0;\n        this.lastTouchTime = 0;\n        this.lastFocusTime = 0;\n        this.lastScrollTop = 0;\n        this.lastScrollLeft = 0;\n        // On iOS, some keys need to have their default behavior happen\n        // (after which we retroactively handle them and reset the DOM) to\n        // avoid messing up the virtual keyboard state.\n        this.pendingIOSKey = undefined;\n        /**\n        When enabled (>-1), tab presses are not given to key handlers,\n        leaving the browser's default behavior. If >0, the mode expires\n        at that timestamp, and any other keypress clears it.\n        Esc enables temporary tab focus mode for two seconds when not\n        otherwise handled.\n        */\n        this.tabFocusMode = -1;\n        this.lastSelectionOrigin = null;\n        this.lastSelectionTime = 0;\n        this.lastContextMenu = 0;\n        this.scrollHandlers = [];\n        this.handlers = Object.create(null);\n        // -1 means not in a composition. Otherwise, this counts the number\n        // of changes made during the composition. The count is used to\n        // avoid treating the start state of the composition, before any\n        // changes have been made, as part of the composition.\n        this.composing = -1;\n        // Tracks whether the next change should be marked as starting the\n        // composition (null means no composition, true means next is the\n        // first, false means first has already been marked for this\n        // composition)\n        this.compositionFirstChange = null;\n        // End time of the previous composition\n        this.compositionEndedAt = 0;\n        // Used in a kludge to detect when an Enter keypress should be\n        // considered part of the composition on Safari, which fires events\n        // in the wrong order\n        this.compositionPendingKey = false;\n        // Used to categorize changes as part of a composition, even when\n        // the mutation events fire shortly after the compositionend event\n        this.compositionPendingChange = false;\n        this.mouseSelection = null;\n        // When a drag from the editor is active, this points at the range\n        // being dragged.\n        this.draggedContent = null;\n        this.handleEvent = this.handleEvent.bind(this);\n        this.notifiedFocused = view.hasFocus;\n        // On Safari adding an input event handler somehow prevents an\n        // issue where the composition vanishes when you press enter.\n        if (browser.safari)\n            view.contentDOM.addEventListener(\"input\", () => null);\n        if (browser.gecko)\n            firefoxCopyCutHack(view.contentDOM.ownerDocument);\n    }\n    handleEvent(event) {\n        if (!eventBelongsToEditor(this.view, event) || this.ignoreDuringComposition(event))\n            return;\n        if (event.type == \"keydown\" && this.keydown(event))\n            return;\n        this.runHandlers(event.type, event);\n    }\n    runHandlers(type, event) {\n        let handlers = this.handlers[type];\n        if (handlers) {\n            for (let observer of handlers.observers)\n                observer(this.view, event);\n            for (let handler of handlers.handlers) {\n                if (event.defaultPrevented)\n                    break;\n                if (handler(this.view, event)) {\n                    event.preventDefault();\n                    break;\n                }\n            }\n        }\n    }\n    ensureHandlers(plugins) {\n        let handlers = computeHandlers(plugins), prev = this.handlers, dom = this.view.contentDOM;\n        for (let type in handlers)\n            if (type != \"scroll\") {\n                let passive = !handlers[type].handlers.length;\n                let exists = prev[type];\n                if (exists && passive != !exists.handlers.length) {\n                    dom.removeEventListener(type, this.handleEvent);\n                    exists = null;\n                }\n                if (!exists)\n                    dom.addEventListener(type, this.handleEvent, { passive });\n            }\n        for (let type in prev)\n            if (type != \"scroll\" && !handlers[type])\n                dom.removeEventListener(type, this.handleEvent);\n        this.handlers = handlers;\n    }\n    keydown(event) {\n        // Must always run, even if a custom handler handled the event\n        this.lastKeyCode = event.keyCode;\n        this.lastKeyTime = Date.now();\n        if (event.keyCode == 9 && this.tabFocusMode > -1 && (!this.tabFocusMode || Date.now() <= this.tabFocusMode))\n            return true;\n        if (this.tabFocusMode > 0 && event.keyCode != 27 && modifierCodes.indexOf(event.keyCode) < 0)\n            this.tabFocusMode = -1;\n        // Chrome for Android usually doesn't fire proper key events, but\n        // occasionally does, usually surrounded by a bunch of complicated\n        // composition changes. When an enter or backspace key event is\n        // seen, hold off on handling DOM events for a bit, and then\n        // dispatch it.\n        if (browser.android && browser.chrome && !event.synthetic &&\n            (event.keyCode == 13 || event.keyCode == 8)) {\n            this.view.observer.delayAndroidKey(event.key, event.keyCode);\n            return true;\n        }\n        // Preventing the default behavior of Enter on iOS makes the\n        // virtual keyboard get stuck in the wrong (lowercase)\n        // state. So we let it go through, and then, in\n        // applyDOMChange, notify key handlers of it and reset to\n        // the state they produce.\n        let pending;\n        if (browser.ios && !event.synthetic && !event.altKey && !event.metaKey &&\n            ((pending = PendingKeys.find(key => key.keyCode == event.keyCode)) && !event.ctrlKey ||\n                EmacsyPendingKeys.indexOf(event.key) > -1 && event.ctrlKey && !event.shiftKey)) {\n            this.pendingIOSKey = pending || event;\n            setTimeout(() => this.flushIOSKey(), 250);\n            return true;\n        }\n        if (event.keyCode != 229)\n            this.view.observer.forceFlush();\n        return false;\n    }\n    flushIOSKey(change) {\n        let key = this.pendingIOSKey;\n        if (!key)\n            return false;\n        // This looks like an autocorrection before Enter\n        if (key.key == \"Enter\" && change && change.from < change.to && /^\\S+$/.test(change.insert.toString()))\n            return false;\n        this.pendingIOSKey = undefined;\n        return dispatchKey(this.view.contentDOM, key.key, key.keyCode, key instanceof KeyboardEvent ? key : undefined);\n    }\n    ignoreDuringComposition(event) {\n        if (!/^key/.test(event.type))\n            return false;\n        if (this.composing > 0)\n            return true;\n        // See https://www.stum.de/2016/06/24/handling-ime-events-in-javascript/.\n        // On some input method editors (IMEs), the Enter key is used to\n        // confirm character selection. On Safari, when Enter is pressed,\n        // compositionend and keydown events are sometimes emitted in the\n        // wrong order. The key event should still be ignored, even when\n        // it happens after the compositionend event.\n        if (browser.safari && !browser.ios && this.compositionPendingKey && Date.now() - this.compositionEndedAt < 100) {\n            this.compositionPendingKey = false;\n            return true;\n        }\n        return false;\n    }\n    startMouseSelection(mouseSelection) {\n        if (this.mouseSelection)\n            this.mouseSelection.destroy();\n        this.mouseSelection = mouseSelection;\n    }\n    update(update) {\n        this.view.observer.update(update);\n        if (this.mouseSelection)\n            this.mouseSelection.update(update);\n        if (this.draggedContent && update.docChanged)\n            this.draggedContent = this.draggedContent.map(update.changes);\n        if (update.transactions.length)\n            this.lastKeyCode = this.lastSelectionTime = 0;\n    }\n    destroy() {\n        if (this.mouseSelection)\n            this.mouseSelection.destroy();\n    }\n}\nfunction bindHandler(plugin, handler) {\n    return (view, event) => {\n        try {\n            return handler.call(plugin, event, view);\n        }\n        catch (e) {\n            logException(view.state, e);\n        }\n    };\n}\nfunction computeHandlers(plugins) {\n    let result = Object.create(null);\n    function record(type) {\n        return result[type] || (result[type] = { observers: [], handlers: [] });\n    }\n    for (let plugin of plugins) {\n        let spec = plugin.spec;\n        if (spec && spec.domEventHandlers)\n            for (let type in spec.domEventHandlers) {\n                let f = spec.domEventHandlers[type];\n                if (f)\n                    record(type).handlers.push(bindHandler(plugin.value, f));\n            }\n        if (spec && spec.domEventObservers)\n            for (let type in spec.domEventObservers) {\n                let f = spec.domEventObservers[type];\n                if (f)\n                    record(type).observers.push(bindHandler(plugin.value, f));\n            }\n    }\n    for (let type in handlers)\n        record(type).handlers.push(handlers[type]);\n    for (let type in observers)\n        record(type).observers.push(observers[type]);\n    return result;\n}\nconst PendingKeys = [\n    { key: \"Backspace\", keyCode: 8, inputType: \"deleteContentBackward\" },\n    { key: \"Enter\", keyCode: 13, inputType: \"insertParagraph\" },\n    { key: \"Enter\", keyCode: 13, inputType: \"insertLineBreak\" },\n    { key: \"Delete\", keyCode: 46, inputType: \"deleteContentForward\" }\n];\nconst EmacsyPendingKeys = \"dthko\";\n// Key codes for modifier keys\nconst modifierCodes = [16, 17, 18, 20, 91, 92, 224, 225];\nconst dragScrollMargin = 6;\nfunction dragScrollSpeed(dist) {\n    return Math.max(0, dist) * 0.7 + 8;\n}\nfunction dist(a, b) {\n    return Math.max(Math.abs(a.clientX - b.clientX), Math.abs(a.clientY - b.clientY));\n}\nclass MouseSelection {\n    constructor(view, startEvent, style, mustSelect) {\n        this.view = view;\n        this.startEvent = startEvent;\n        this.style = style;\n        this.mustSelect = mustSelect;\n        this.scrollSpeed = { x: 0, y: 0 };\n        this.scrolling = -1;\n        this.lastEvent = startEvent;\n        this.scrollParents = scrollableParents(view.contentDOM);\n        this.atoms = view.state.facet(atomicRanges).map(f => f(view));\n        let doc = view.contentDOM.ownerDocument;\n        doc.addEventListener(\"mousemove\", this.move = this.move.bind(this));\n        doc.addEventListener(\"mouseup\", this.up = this.up.bind(this));\n        this.extend = startEvent.shiftKey;\n        this.multiple = view.state.facet(EditorState.allowMultipleSelections) && addsSelectionRange(view, startEvent);\n        this.dragging = isInPrimarySelection(view, startEvent) && getClickType(startEvent) == 1 ? null : false;\n    }\n    start(event) {\n        // When clicking outside of the selection, immediately apply the\n        // effect of starting the selection\n        if (this.dragging === false)\n            this.select(event);\n    }\n    move(event) {\n        if (event.buttons == 0)\n            return this.destroy();\n        if (this.dragging || this.dragging == null && dist(this.startEvent, event) < 10)\n            return;\n        this.select(this.lastEvent = event);\n        let sx = 0, sy = 0;\n        let left = 0, top = 0, right = this.view.win.innerWidth, bottom = this.view.win.innerHeight;\n        if (this.scrollParents.x)\n            ({ left, right } = this.scrollParents.x.getBoundingClientRect());\n        if (this.scrollParents.y)\n            ({ top, bottom } = this.scrollParents.y.getBoundingClientRect());\n        let margins = getScrollMargins(this.view);\n        if (event.clientX - margins.left <= left + dragScrollMargin)\n            sx = -dragScrollSpeed(left - event.clientX);\n        else if (event.clientX + margins.right >= right - dragScrollMargin)\n            sx = dragScrollSpeed(event.clientX - right);\n        if (event.clientY - margins.top <= top + dragScrollMargin)\n            sy = -dragScrollSpeed(top - event.clientY);\n        else if (event.clientY + margins.bottom >= bottom - dragScrollMargin)\n            sy = dragScrollSpeed(event.clientY - bottom);\n        this.setScrollSpeed(sx, sy);\n    }\n    up(event) {\n        if (this.dragging == null)\n            this.select(this.lastEvent);\n        if (!this.dragging)\n            event.preventDefault();\n        this.destroy();\n    }\n    destroy() {\n        this.setScrollSpeed(0, 0);\n        let doc = this.view.contentDOM.ownerDocument;\n        doc.removeEventListener(\"mousemove\", this.move);\n        doc.removeEventListener(\"mouseup\", this.up);\n        this.view.inputState.mouseSelection = this.view.inputState.draggedContent = null;\n    }\n    setScrollSpeed(sx, sy) {\n        this.scrollSpeed = { x: sx, y: sy };\n        if (sx || sy) {\n            if (this.scrolling < 0)\n                this.scrolling = setInterval(() => this.scroll(), 50);\n        }\n        else if (this.scrolling > -1) {\n            clearInterval(this.scrolling);\n            this.scrolling = -1;\n        }\n    }\n    scroll() {\n        let { x, y } = this.scrollSpeed;\n        if (x && this.scrollParents.x) {\n            this.scrollParents.x.scrollLeft += x;\n            x = 0;\n        }\n        if (y && this.scrollParents.y) {\n            this.scrollParents.y.scrollTop += y;\n            y = 0;\n        }\n        if (x || y)\n            this.view.win.scrollBy(x, y);\n        if (this.dragging === false)\n            this.select(this.lastEvent);\n    }\n    skipAtoms(sel) {\n        let ranges = null;\n        for (let i = 0; i < sel.ranges.length; i++) {\n            let range = sel.ranges[i], updated = null;\n            if (range.empty) {\n                let pos = skipAtomicRanges(this.atoms, range.from, 0);\n                if (pos != range.from)\n                    updated = EditorSelection.cursor(pos, -1);\n            }\n            else {\n                let from = skipAtomicRanges(this.atoms, range.from, -1);\n                let to = skipAtomicRanges(this.atoms, range.to, 1);\n                if (from != range.from || to != range.to)\n                    updated = EditorSelection.range(range.from == range.anchor ? from : to, range.from == range.head ? from : to);\n            }\n            if (updated) {\n                if (!ranges)\n                    ranges = sel.ranges.slice();\n                ranges[i] = updated;\n            }\n        }\n        return ranges ? EditorSelection.create(ranges, sel.mainIndex) : sel;\n    }\n    select(event) {\n        let { view } = this, selection = this.skipAtoms(this.style.get(event, this.extend, this.multiple));\n        if (this.mustSelect || !selection.eq(view.state.selection, this.dragging === false))\n            this.view.dispatch({\n                selection,\n                userEvent: \"select.pointer\"\n            });\n        this.mustSelect = false;\n    }\n    update(update) {\n        if (update.transactions.some(tr => tr.isUserEvent(\"input.type\")))\n            this.destroy();\n        else if (this.style.update(update))\n            setTimeout(() => this.select(this.lastEvent), 20);\n    }\n}\nfunction addsSelectionRange(view, event) {\n    let facet = view.state.facet(clickAddsSelectionRange);\n    return facet.length ? facet[0](event) : browser.mac ? event.metaKey : event.ctrlKey;\n}\nfunction dragMovesSelection(view, event) {\n    let facet = view.state.facet(dragMovesSelection$1);\n    return facet.length ? facet[0](event) : browser.mac ? !event.altKey : !event.ctrlKey;\n}\nfunction isInPrimarySelection(view, event) {\n    let { main } = view.state.selection;\n    if (main.empty)\n        return false;\n    // On boundary clicks, check whether the coordinates are inside the\n    // selection's client rectangles\n    let sel = getSelection(view.root);\n    if (!sel || sel.rangeCount == 0)\n        return true;\n    let rects = sel.getRangeAt(0).getClientRects();\n    for (let i = 0; i < rects.length; i++) {\n        let rect = rects[i];\n        if (rect.left <= event.clientX && rect.right >= event.clientX &&\n            rect.top <= event.clientY && rect.bottom >= event.clientY)\n            return true;\n    }\n    return false;\n}\nfunction eventBelongsToEditor(view, event) {\n    if (!event.bubbles)\n        return true;\n    if (event.defaultPrevented)\n        return false;\n    for (let node = event.target, cView; node != view.contentDOM; node = node.parentNode)\n        if (!node || node.nodeType == 11 || ((cView = ContentView.get(node)) && cView.ignoreEvent(event)))\n            return false;\n    return true;\n}\nconst handlers = /*@__PURE__*/Object.create(null);\nconst observers = /*@__PURE__*/Object.create(null);\n// This is very crude, but unfortunately both these browsers _pretend_\n// that they have a clipboard API—all the objects and methods are\n// there, they just don't work, and they are hard to test.\nconst brokenClipboardAPI = (browser.ie && browser.ie_version < 15) ||\n    (browser.ios && browser.webkit_version < 604);\nfunction capturePaste(view) {\n    let parent = view.dom.parentNode;\n    if (!parent)\n        return;\n    let target = parent.appendChild(document.createElement(\"textarea\"));\n    target.style.cssText = \"position: fixed; left: -10000px; top: 10px\";\n    target.focus();\n    setTimeout(() => {\n        view.focus();\n        target.remove();\n        doPaste(view, target.value);\n    }, 50);\n}\nfunction textFilter(state, facet, text) {\n    for (let filter of state.facet(facet))\n        text = filter(text, state);\n    return text;\n}\nfunction doPaste(view, input) {\n    input = textFilter(view.state, clipboardInputFilter, input);\n    let { state } = view, changes, i = 1, text = state.toText(input);\n    let byLine = text.lines == state.selection.ranges.length;\n    let linewise = lastLinewiseCopy != null && state.selection.ranges.every(r => r.empty) && lastLinewiseCopy == text.toString();\n    if (linewise) {\n        let lastLine = -1;\n        changes = state.changeByRange(range => {\n            let line = state.doc.lineAt(range.from);\n            if (line.from == lastLine)\n                return { range };\n            lastLine = line.from;\n            let insert = state.toText((byLine ? text.line(i++).text : input) + state.lineBreak);\n            return { changes: { from: line.from, insert },\n                range: EditorSelection.cursor(range.from + insert.length) };\n        });\n    }\n    else if (byLine) {\n        changes = state.changeByRange(range => {\n            let line = text.line(i++);\n            return { changes: { from: range.from, to: range.to, insert: line.text },\n                range: EditorSelection.cursor(range.from + line.length) };\n        });\n    }\n    else {\n        changes = state.replaceSelection(text);\n    }\n    view.dispatch(changes, {\n        userEvent: \"input.paste\",\n        scrollIntoView: true\n    });\n}\nobservers.scroll = view => {\n    view.inputState.lastScrollTop = view.scrollDOM.scrollTop;\n    view.inputState.lastScrollLeft = view.scrollDOM.scrollLeft;\n};\nhandlers.keydown = (view, event) => {\n    view.inputState.setSelectionOrigin(\"select\");\n    if (event.keyCode == 27 && view.inputState.tabFocusMode != 0)\n        view.inputState.tabFocusMode = Date.now() + 2000;\n    return false;\n};\nobservers.touchstart = (view, e) => {\n    view.inputState.lastTouchTime = Date.now();\n    view.inputState.setSelectionOrigin(\"select.pointer\");\n};\nobservers.touchmove = view => {\n    view.inputState.setSelectionOrigin(\"select.pointer\");\n};\nhandlers.mousedown = (view, event) => {\n    view.observer.flush();\n    if (view.inputState.lastTouchTime > Date.now() - 2000)\n        return false; // Ignore touch interaction\n    let style = null;\n    for (let makeStyle of view.state.facet(mouseSelectionStyle)) {\n        style = makeStyle(view, event);\n        if (style)\n            break;\n    }\n    if (!style && event.button == 0)\n        style = basicMouseSelection(view, event);\n    if (style) {\n        let mustFocus = !view.hasFocus;\n        view.inputState.startMouseSelection(new MouseSelection(view, event, style, mustFocus));\n        if (mustFocus)\n            view.observer.ignore(() => {\n                focusPreventScroll(view.contentDOM);\n                let active = view.root.activeElement;\n                if (active && !active.contains(view.contentDOM))\n                    active.blur();\n            });\n        let mouseSel = view.inputState.mouseSelection;\n        if (mouseSel) {\n            mouseSel.start(event);\n            return mouseSel.dragging === false;\n        }\n    }\n    return false;\n};\nfunction rangeForClick(view, pos, bias, type) {\n    if (type == 1) { // Single click\n        return EditorSelection.cursor(pos, bias);\n    }\n    else if (type == 2) { // Double click\n        return groupAt(view.state, pos, bias);\n    }\n    else { // Triple click\n        let visual = LineView.find(view.docView, pos), line = view.state.doc.lineAt(visual ? visual.posAtEnd : pos);\n        let from = visual ? visual.posAtStart : line.from, to = visual ? visual.posAtEnd : line.to;\n        if (to < view.state.doc.length && to == line.to)\n            to++;\n        return EditorSelection.range(from, to);\n    }\n}\nlet inside = (x, y, rect) => y >= rect.top && y <= rect.bottom && x >= rect.left && x <= rect.right;\n// Try to determine, for the given coordinates, associated with the\n// given position, whether they are related to the element before or\n// the element after the position.\nfunction findPositionSide(view, pos, x, y) {\n    let line = LineView.find(view.docView, pos);\n    if (!line)\n        return 1;\n    let off = pos - line.posAtStart;\n    // Line boundaries point into the line\n    if (off == 0)\n        return 1;\n    if (off == line.length)\n        return -1;\n    // Positions on top of an element point at that element\n    let before = line.coordsAt(off, -1);\n    if (before && inside(x, y, before))\n        return -1;\n    let after = line.coordsAt(off, 1);\n    if (after && inside(x, y, after))\n        return 1;\n    // This is probably a line wrap point. Pick before if the point is\n    // above its bottom.\n    return before && before.bottom >= y ? -1 : 1;\n}\nfunction queryPos(view, event) {\n    let pos = view.posAtCoords({ x: event.clientX, y: event.clientY }, false);\n    return { pos, bias: findPositionSide(view, pos, event.clientX, event.clientY) };\n}\nconst BadMouseDetail = browser.ie && browser.ie_version <= 11;\nlet lastMouseDown = null, lastMouseDownCount = 0, lastMouseDownTime = 0;\nfunction getClickType(event) {\n    if (!BadMouseDetail)\n        return event.detail;\n    let last = lastMouseDown, lastTime = lastMouseDownTime;\n    lastMouseDown = event;\n    lastMouseDownTime = Date.now();\n    return lastMouseDownCount = !last || (lastTime > Date.now() - 400 && Math.abs(last.clientX - event.clientX) < 2 &&\n        Math.abs(last.clientY - event.clientY) < 2) ? (lastMouseDownCount + 1) % 3 : 1;\n}\nfunction basicMouseSelection(view, event) {\n    let start = queryPos(view, event), type = getClickType(event);\n    let startSel = view.state.selection;\n    return {\n        update(update) {\n            if (update.docChanged) {\n                start.pos = update.changes.mapPos(start.pos);\n                startSel = startSel.map(update.changes);\n            }\n        },\n        get(event, extend, multiple) {\n            let cur = queryPos(view, event), removed;\n            let range = rangeForClick(view, cur.pos, cur.bias, type);\n            if (start.pos != cur.pos && !extend) {\n                let startRange = rangeForClick(view, start.pos, start.bias, type);\n                let from = Math.min(startRange.from, range.from), to = Math.max(startRange.to, range.to);\n                range = from < range.from ? EditorSelection.range(from, to) : EditorSelection.range(to, from);\n            }\n            if (extend)\n                return startSel.replaceRange(startSel.main.extend(range.from, range.to));\n            else if (multiple && type == 1 && startSel.ranges.length > 1 && (removed = removeRangeAround(startSel, cur.pos)))\n                return removed;\n            else if (multiple)\n                return startSel.addRange(range);\n            else\n                return EditorSelection.create([range]);\n        }\n    };\n}\nfunction removeRangeAround(sel, pos) {\n    for (let i = 0; i < sel.ranges.length; i++) {\n        let { from, to } = sel.ranges[i];\n        if (from <= pos && to >= pos)\n            return EditorSelection.create(sel.ranges.slice(0, i).concat(sel.ranges.slice(i + 1)), sel.mainIndex == i ? 0 : sel.mainIndex - (sel.mainIndex > i ? 1 : 0));\n    }\n    return null;\n}\nhandlers.dragstart = (view, event) => {\n    let { selection: { main: range } } = view.state;\n    if (event.target.draggable) {\n        let cView = view.docView.nearest(event.target);\n        if (cView && cView.isWidget) {\n            let from = cView.posAtStart, to = from + cView.length;\n            if (from >= range.to || to <= range.from)\n                range = EditorSelection.range(from, to);\n        }\n    }\n    let { inputState } = view;\n    if (inputState.mouseSelection)\n        inputState.mouseSelection.dragging = true;\n    inputState.draggedContent = range;\n    if (event.dataTransfer) {\n        event.dataTransfer.setData(\"Text\", textFilter(view.state, clipboardOutputFilter, view.state.sliceDoc(range.from, range.to)));\n        event.dataTransfer.effectAllowed = \"copyMove\";\n    }\n    return false;\n};\nhandlers.dragend = view => {\n    view.inputState.draggedContent = null;\n    return false;\n};\nfunction dropText(view, event, text, direct) {\n    text = textFilter(view.state, clipboardInputFilter, text);\n    if (!text)\n        return;\n    let dropPos = view.posAtCoords({ x: event.clientX, y: event.clientY }, false);\n    let { draggedContent } = view.inputState;\n    let del = direct && draggedContent && dragMovesSelection(view, event)\n        ? { from: draggedContent.from, to: draggedContent.to } : null;\n    let ins = { from: dropPos, insert: text };\n    let changes = view.state.changes(del ? [del, ins] : ins);\n    view.focus();\n    view.dispatch({\n        changes,\n        selection: { anchor: changes.mapPos(dropPos, -1), head: changes.mapPos(dropPos, 1) },\n        userEvent: del ? \"move.drop\" : \"input.drop\"\n    });\n    view.inputState.draggedContent = null;\n}\nhandlers.drop = (view, event) => {\n    if (!event.dataTransfer)\n        return false;\n    if (view.state.readOnly)\n        return true;\n    let files = event.dataTransfer.files;\n    if (files && files.length) { // For a file drop, read the file's text.\n        let text = Array(files.length), read = 0;\n        let finishFile = () => {\n            if (++read == files.length)\n                dropText(view, event, text.filter(s => s != null).join(view.state.lineBreak), false);\n        };\n        for (let i = 0; i < files.length; i++) {\n            let reader = new FileReader;\n            reader.onerror = finishFile;\n            reader.onload = () => {\n                if (!/[\\x00-\\x08\\x0e-\\x1f]{2}/.test(reader.result))\n                    text[i] = reader.result;\n                finishFile();\n            };\n            reader.readAsText(files[i]);\n        }\n        return true;\n    }\n    else {\n        let text = event.dataTransfer.getData(\"Text\");\n        if (text) {\n            dropText(view, event, text, true);\n            return true;\n        }\n    }\n    return false;\n};\nhandlers.paste = (view, event) => {\n    if (view.state.readOnly)\n        return true;\n    view.observer.flush();\n    let data = brokenClipboardAPI ? null : event.clipboardData;\n    if (data) {\n        doPaste(view, data.getData(\"text/plain\") || data.getData(\"text/uri-list\"));\n        return true;\n    }\n    else {\n        capturePaste(view);\n        return false;\n    }\n};\nfunction captureCopy(view, text) {\n    // The extra wrapper is somehow necessary on IE/Edge to prevent the\n    // content from being mangled when it is put onto the clipboard\n    let parent = view.dom.parentNode;\n    if (!parent)\n        return;\n    let target = parent.appendChild(document.createElement(\"textarea\"));\n    target.style.cssText = \"position: fixed; left: -10000px; top: 10px\";\n    target.value = text;\n    target.focus();\n    target.selectionEnd = text.length;\n    target.selectionStart = 0;\n    setTimeout(() => {\n        target.remove();\n        view.focus();\n    }, 50);\n}\nfunction copiedRange(state) {\n    let content = [], ranges = [], linewise = false;\n    for (let range of state.selection.ranges)\n        if (!range.empty) {\n            content.push(state.sliceDoc(range.from, range.to));\n            ranges.push(range);\n        }\n    if (!content.length) {\n        // Nothing selected, do a line-wise copy\n        let upto = -1;\n        for (let { from } of state.selection.ranges) {\n            let line = state.doc.lineAt(from);\n            if (line.number > upto) {\n                content.push(line.text);\n                ranges.push({ from: line.from, to: Math.min(state.doc.length, line.to + 1) });\n            }\n            upto = line.number;\n        }\n        linewise = true;\n    }\n    return { text: textFilter(state, clipboardOutputFilter, content.join(state.lineBreak)), ranges, linewise };\n}\nlet lastLinewiseCopy = null;\nhandlers.copy = handlers.cut = (view, event) => {\n    let { text, ranges, linewise } = copiedRange(view.state);\n    if (!text && !linewise)\n        return false;\n    lastLinewiseCopy = linewise ? text : null;\n    if (event.type == \"cut\" && !view.state.readOnly)\n        view.dispatch({\n            changes: ranges,\n            scrollIntoView: true,\n            userEvent: \"delete.cut\"\n        });\n    let data = brokenClipboardAPI ? null : event.clipboardData;\n    if (data) {\n        data.clearData();\n        data.setData(\"text/plain\", text);\n        return true;\n    }\n    else {\n        captureCopy(view, text);\n        return false;\n    }\n};\nconst isFocusChange = /*@__PURE__*/Annotation.define();\nfunction focusChangeTransaction(state, focus) {\n    let effects = [];\n    for (let getEffect of state.facet(focusChangeEffect)) {\n        let effect = getEffect(state, focus);\n        if (effect)\n            effects.push(effect);\n    }\n    return effects ? state.update({ effects, annotations: isFocusChange.of(true) }) : null;\n}\nfunction updateForFocusChange(view) {\n    setTimeout(() => {\n        let focus = view.hasFocus;\n        if (focus != view.inputState.notifiedFocused) {\n            let tr = focusChangeTransaction(view.state, focus);\n            if (tr)\n                view.dispatch(tr);\n            else\n                view.update([]);\n        }\n    }, 10);\n}\nobservers.focus = view => {\n    view.inputState.lastFocusTime = Date.now();\n    // When focusing reset the scroll position, move it back to where it was\n    if (!view.scrollDOM.scrollTop && (view.inputState.lastScrollTop || view.inputState.lastScrollLeft)) {\n        view.scrollDOM.scrollTop = view.inputState.lastScrollTop;\n        view.scrollDOM.scrollLeft = view.inputState.lastScrollLeft;\n    }\n    updateForFocusChange(view);\n};\nobservers.blur = view => {\n    view.observer.clearSelectionRange();\n    updateForFocusChange(view);\n};\nobservers.compositionstart = observers.compositionupdate = view => {\n    if (view.observer.editContext)\n        return; // Composition handled by edit context\n    if (view.inputState.compositionFirstChange == null)\n        view.inputState.compositionFirstChange = true;\n    if (view.inputState.composing < 0) {\n        // FIXME possibly set a timeout to clear it again on Android\n        view.inputState.composing = 0;\n    }\n};\nobservers.compositionend = view => {\n    if (view.observer.editContext)\n        return; // Composition handled by edit context\n    view.inputState.composing = -1;\n    view.inputState.compositionEndedAt = Date.now();\n    view.inputState.compositionPendingKey = true;\n    view.inputState.compositionPendingChange = view.observer.pendingRecords().length > 0;\n    view.inputState.compositionFirstChange = null;\n    if (browser.chrome && browser.android) {\n        // Delay flushing for a bit on Android because it'll often fire a\n        // bunch of contradictory changes in a row at end of compositon\n        view.observer.flushSoon();\n    }\n    else if (view.inputState.compositionPendingChange) {\n        // If we found pending records, schedule a flush.\n        Promise.resolve().then(() => view.observer.flush());\n    }\n    else {\n        // Otherwise, make sure that, if no changes come in soon, the\n        // composition view is cleared.\n        setTimeout(() => {\n            if (view.inputState.composing < 0 && view.docView.hasComposition)\n                view.update([]);\n        }, 50);\n    }\n};\nobservers.contextmenu = view => {\n    view.inputState.lastContextMenu = Date.now();\n};\nhandlers.beforeinput = (view, event) => {\n    var _a, _b;\n    // In EditContext mode, we must handle insertReplacementText events\n    // directly, to make spell checking corrections work\n    if (event.inputType == \"insertReplacementText\" && view.observer.editContext) {\n        let text = (_a = event.dataTransfer) === null || _a === void 0 ? void 0 : _a.getData(\"text/plain\"), ranges = event.getTargetRanges();\n        if (text && ranges.length) {\n            let r = ranges[0];\n            let from = view.posAtDOM(r.startContainer, r.startOffset), to = view.posAtDOM(r.endContainer, r.endOffset);\n            applyDOMChangeInner(view, { from, to, insert: view.state.toText(text) }, null);\n            return true;\n        }\n    }\n    // Because Chrome Android doesn't fire useful key events, use\n    // beforeinput to detect backspace (and possibly enter and delete,\n    // but those usually don't even seem to fire beforeinput events at\n    // the moment) and fake a key event for it.\n    //\n    // (preventDefault on beforeinput, though supported in the spec,\n    // seems to do nothing at all on Chrome).\n    let pending;\n    if (browser.chrome && browser.android && (pending = PendingKeys.find(key => key.inputType == event.inputType))) {\n        view.observer.delayAndroidKey(pending.key, pending.keyCode);\n        if (pending.key == \"Backspace\" || pending.key == \"Delete\") {\n            let startViewHeight = ((_b = window.visualViewport) === null || _b === void 0 ? void 0 : _b.height) || 0;\n            setTimeout(() => {\n                var _a;\n                // Backspacing near uneditable nodes on Chrome Android sometimes\n                // closes the virtual keyboard. This tries to crudely detect\n                // that and refocus to get it back.\n                if ((((_a = window.visualViewport) === null || _a === void 0 ? void 0 : _a.height) || 0) > startViewHeight + 10 && view.hasFocus) {\n                    view.contentDOM.blur();\n                    view.focus();\n                }\n            }, 100);\n        }\n    }\n    if (browser.ios && event.inputType == \"deleteContentForward\") {\n        // For some reason, DOM changes (and beforeinput) happen _before_\n        // the key event for ctrl-d on iOS when using an external\n        // keyboard.\n        view.observer.flushSoon();\n    }\n    // Safari will occasionally forget to fire compositionend at the end of a dead-key composition\n    if (browser.safari && event.inputType == \"insertText\" && view.inputState.composing >= 0) {\n        setTimeout(() => observers.compositionend(view, event), 20);\n    }\n    return false;\n};\nconst appliedFirefoxHack = /*@__PURE__*/new Set;\n// In Firefox, when cut/copy handlers are added to the document, that\n// somehow avoids a bug where those events aren't fired when the\n// selection is empty. See https://github.com/codemirror/dev/issues/1082\n// and https://bugzilla.mozilla.org/show_bug.cgi?id=995961\nfunction firefoxCopyCutHack(doc) {\n    if (!appliedFirefoxHack.has(doc)) {\n        appliedFirefoxHack.add(doc);\n        doc.addEventListener(\"copy\", () => { });\n        doc.addEventListener(\"cut\", () => { });\n    }\n}\n\nconst wrappingWhiteSpace = [\"pre-wrap\", \"normal\", \"pre-line\", \"break-spaces\"];\n// Used to track, during updateHeight, if any actual heights changed\nlet heightChangeFlag = false;\nfunction clearHeightChangeFlag() { heightChangeFlag = false; }\nclass HeightOracle {\n    constructor(lineWrapping) {\n        this.lineWrapping = lineWrapping;\n        this.doc = Text.empty;\n        this.heightSamples = {};\n        this.lineHeight = 14; // The height of an entire line (line-height)\n        this.charWidth = 7;\n        this.textHeight = 14; // The height of the actual font (font-size)\n        this.lineLength = 30;\n    }\n    heightForGap(from, to) {\n        let lines = this.doc.lineAt(to).number - this.doc.lineAt(from).number + 1;\n        if (this.lineWrapping)\n            lines += Math.max(0, Math.ceil(((to - from) - (lines * this.lineLength * 0.5)) / this.lineLength));\n        return this.lineHeight * lines;\n    }\n    heightForLine(length) {\n        if (!this.lineWrapping)\n            return this.lineHeight;\n        let lines = 1 + Math.max(0, Math.ceil((length - this.lineLength) / (this.lineLength - 5)));\n        return lines * this.lineHeight;\n    }\n    setDoc(doc) { this.doc = doc; return this; }\n    mustRefreshForWrapping(whiteSpace) {\n        return (wrappingWhiteSpace.indexOf(whiteSpace) > -1) != this.lineWrapping;\n    }\n    mustRefreshForHeights(lineHeights) {\n        let newHeight = false;\n        for (let i = 0; i < lineHeights.length; i++) {\n            let h = lineHeights[i];\n            if (h < 0) {\n                i++;\n            }\n            else if (!this.heightSamples[Math.floor(h * 10)]) { // Round to .1 pixels\n                newHeight = true;\n                this.heightSamples[Math.floor(h * 10)] = true;\n            }\n        }\n        return newHeight;\n    }\n    refresh(whiteSpace, lineHeight, charWidth, textHeight, lineLength, knownHeights) {\n        let lineWrapping = wrappingWhiteSpace.indexOf(whiteSpace) > -1;\n        let changed = Math.round(lineHeight) != Math.round(this.lineHeight) || this.lineWrapping != lineWrapping;\n        this.lineWrapping = lineWrapping;\n        this.lineHeight = lineHeight;\n        this.charWidth = charWidth;\n        this.textHeight = textHeight;\n        this.lineLength = lineLength;\n        if (changed) {\n            this.heightSamples = {};\n            for (let i = 0; i < knownHeights.length; i++) {\n                let h = knownHeights[i];\n                if (h < 0)\n                    i++;\n                else\n                    this.heightSamples[Math.floor(h * 10)] = true;\n            }\n        }\n        return changed;\n    }\n}\n// This object is used by `updateHeight` to make DOM measurements\n// arrive at the right nides. The `heights` array is a sequence of\n// block heights, starting from position `from`.\nclass MeasuredHeights {\n    constructor(from, heights) {\n        this.from = from;\n        this.heights = heights;\n        this.index = 0;\n    }\n    get more() { return this.index < this.heights.length; }\n}\n/**\nRecord used to represent information about a block-level element\nin the editor view.\n*/\nclass BlockInfo {\n    /**\n    @internal\n    */\n    constructor(\n    /**\n    The start of the element in the document.\n    */\n    from, \n    /**\n    The length of the element.\n    */\n    length, \n    /**\n    The top position of the element (relative to the top of the\n    document).\n    */\n    top, \n    /**\n    Its height.\n    */\n    height, \n    /**\n    @internal Weird packed field that holds an array of children\n    for composite blocks, a decoration for block widgets, and a\n    number indicating the amount of widget-create line breaks for\n    text blocks.\n    */\n    _content) {\n        this.from = from;\n        this.length = length;\n        this.top = top;\n        this.height = height;\n        this._content = _content;\n    }\n    /**\n    The type of element this is. When querying lines, this may be\n    an array of all the blocks that make up the line.\n    */\n    get type() {\n        return typeof this._content == \"number\" ? BlockType.Text :\n            Array.isArray(this._content) ? this._content : this._content.type;\n    }\n    /**\n    The end of the element as a document position.\n    */\n    get to() { return this.from + this.length; }\n    /**\n    The bottom position of the element.\n    */\n    get bottom() { return this.top + this.height; }\n    /**\n    If this is a widget block, this will return the widget\n    associated with it.\n    */\n    get widget() {\n        return this._content instanceof PointDecoration ? this._content.widget : null;\n    }\n    /**\n    If this is a textblock, this holds the number of line breaks\n    that appear in widgets inside the block.\n    */\n    get widgetLineBreaks() {\n        return typeof this._content == \"number\" ? this._content : 0;\n    }\n    /**\n    @internal\n    */\n    join(other) {\n        let content = (Array.isArray(this._content) ? this._content : [this])\n            .concat(Array.isArray(other._content) ? other._content : [other]);\n        return new BlockInfo(this.from, this.length + other.length, this.top, this.height + other.height, content);\n    }\n}\nvar QueryType = /*@__PURE__*/(function (QueryType) {\n    QueryType[QueryType[\"ByPos\"] = 0] = \"ByPos\";\n    QueryType[QueryType[\"ByHeight\"] = 1] = \"ByHeight\";\n    QueryType[QueryType[\"ByPosNoHeight\"] = 2] = \"ByPosNoHeight\";\nreturn QueryType})(QueryType || (QueryType = {}));\nconst Epsilon = 1e-3;\nclass HeightMap {\n    constructor(length, // The number of characters covered\n    height, // Height of this part of the document\n    flags = 2 /* Flag.Outdated */) {\n        this.length = length;\n        this.height = height;\n        this.flags = flags;\n    }\n    get outdated() { return (this.flags & 2 /* Flag.Outdated */) > 0; }\n    set outdated(value) { this.flags = (value ? 2 /* Flag.Outdated */ : 0) | (this.flags & ~2 /* Flag.Outdated */); }\n    setHeight(height) {\n        if (this.height != height) {\n            if (Math.abs(this.height - height) > Epsilon)\n                heightChangeFlag = true;\n            this.height = height;\n        }\n    }\n    // Base case is to replace a leaf node, which simply builds a tree\n    // from the new nodes and returns that (HeightMapBranch and\n    // HeightMapGap override this to actually use from/to)\n    replace(_from, _to, nodes) {\n        return HeightMap.of(nodes);\n    }\n    // Again, these are base cases, and are overridden for branch and gap nodes.\n    decomposeLeft(_to, result) { result.push(this); }\n    decomposeRight(_from, result) { result.push(this); }\n    applyChanges(decorations, oldDoc, oracle, changes) {\n        let me = this, doc = oracle.doc;\n        for (let i = changes.length - 1; i >= 0; i--) {\n            let { fromA, toA, fromB, toB } = changes[i];\n            let start = me.lineAt(fromA, QueryType.ByPosNoHeight, oracle.setDoc(oldDoc), 0, 0);\n            let end = start.to >= toA ? start : me.lineAt(toA, QueryType.ByPosNoHeight, oracle, 0, 0);\n            toB += end.to - toA;\n            toA = end.to;\n            while (i > 0 && start.from <= changes[i - 1].toA) {\n                fromA = changes[i - 1].fromA;\n                fromB = changes[i - 1].fromB;\n                i--;\n                if (fromA < start.from)\n                    start = me.lineAt(fromA, QueryType.ByPosNoHeight, oracle, 0, 0);\n            }\n            fromB += start.from - fromA;\n            fromA = start.from;\n            let nodes = NodeBuilder.build(oracle.setDoc(doc), decorations, fromB, toB);\n            me = replace(me, me.replace(fromA, toA, nodes));\n        }\n        return me.updateHeight(oracle, 0);\n    }\n    static empty() { return new HeightMapText(0, 0); }\n    // nodes uses null values to indicate the position of line breaks.\n    // There are never line breaks at the start or end of the array, or\n    // two line breaks next to each other, and the array isn't allowed\n    // to be empty (same restrictions as return value from the builder).\n    static of(nodes) {\n        if (nodes.length == 1)\n            return nodes[0];\n        let i = 0, j = nodes.length, before = 0, after = 0;\n        for (;;) {\n            if (i == j) {\n                if (before > after * 2) {\n                    let split = nodes[i - 1];\n                    if (split.break)\n                        nodes.splice(--i, 1, split.left, null, split.right);\n                    else\n                        nodes.splice(--i, 1, split.left, split.right);\n                    j += 1 + split.break;\n                    before -= split.size;\n                }\n                else if (after > before * 2) {\n                    let split = nodes[j];\n                    if (split.break)\n                        nodes.splice(j, 1, split.left, null, split.right);\n                    else\n                        nodes.splice(j, 1, split.left, split.right);\n                    j += 2 + split.break;\n                    after -= split.size;\n                }\n                else {\n                    break;\n                }\n            }\n            else if (before < after) {\n                let next = nodes[i++];\n                if (next)\n                    before += next.size;\n            }\n            else {\n                let next = nodes[--j];\n                if (next)\n                    after += next.size;\n            }\n        }\n        let brk = 0;\n        if (nodes[i - 1] == null) {\n            brk = 1;\n            i--;\n        }\n        else if (nodes[i] == null) {\n            brk = 1;\n            j++;\n        }\n        return new HeightMapBranch(HeightMap.of(nodes.slice(0, i)), brk, HeightMap.of(nodes.slice(j)));\n    }\n}\nfunction replace(old, val) {\n    if (old == val)\n        return old;\n    if (old.constructor != val.constructor)\n        heightChangeFlag = true;\n    return val;\n}\nHeightMap.prototype.size = 1;\nclass HeightMapBlock extends HeightMap {\n    constructor(length, height, deco) {\n        super(length, height);\n        this.deco = deco;\n    }\n    blockAt(_height, _oracle, top, offset) {\n        return new BlockInfo(offset, this.length, top, this.height, this.deco || 0);\n    }\n    lineAt(_value, _type, oracle, top, offset) {\n        return this.blockAt(0, oracle, top, offset);\n    }\n    forEachLine(from, to, oracle, top, offset, f) {\n        if (from <= offset + this.length && to >= offset)\n            f(this.blockAt(0, oracle, top, offset));\n    }\n    updateHeight(oracle, offset = 0, _force = false, measured) {\n        if (measured && measured.from <= offset && measured.more)\n            this.setHeight(measured.heights[measured.index++]);\n        this.outdated = false;\n        return this;\n    }\n    toString() { return `block(${this.length})`; }\n}\nclass HeightMapText extends HeightMapBlock {\n    constructor(length, height) {\n        super(length, height, null);\n        this.collapsed = 0; // Amount of collapsed content in the line\n        this.widgetHeight = 0; // Maximum inline widget height\n        this.breaks = 0; // Number of widget-introduced line breaks on the line\n    }\n    blockAt(_height, _oracle, top, offset) {\n        return new BlockInfo(offset, this.length, top, this.height, this.breaks);\n    }\n    replace(_from, _to, nodes) {\n        let node = nodes[0];\n        if (nodes.length == 1 && (node instanceof HeightMapText || node instanceof HeightMapGap && (node.flags & 4 /* Flag.SingleLine */)) &&\n            Math.abs(this.length - node.length) < 10) {\n            if (node instanceof HeightMapGap)\n                node = new HeightMapText(node.length, this.height);\n            else\n                node.height = this.height;\n            if (!this.outdated)\n                node.outdated = false;\n            return node;\n        }\n        else {\n            return HeightMap.of(nodes);\n        }\n    }\n    updateHeight(oracle, offset = 0, force = false, measured) {\n        if (measured && measured.from <= offset && measured.more)\n            this.setHeight(measured.heights[measured.index++]);\n        else if (force || this.outdated)\n            this.setHeight(Math.max(this.widgetHeight, oracle.heightForLine(this.length - this.collapsed)) +\n                this.breaks * oracle.lineHeight);\n        this.outdated = false;\n        return this;\n    }\n    toString() {\n        return `line(${this.length}${this.collapsed ? -this.collapsed : \"\"}${this.widgetHeight ? \":\" + this.widgetHeight : \"\"})`;\n    }\n}\nclass HeightMapGap extends HeightMap {\n    constructor(length) { super(length, 0); }\n    heightMetrics(oracle, offset) {\n        let firstLine = oracle.doc.lineAt(offset).number, lastLine = oracle.doc.lineAt(offset + this.length).number;\n        let lines = lastLine - firstLine + 1;\n        let perLine, perChar = 0;\n        if (oracle.lineWrapping) {\n            let totalPerLine = Math.min(this.height, oracle.lineHeight * lines);\n            perLine = totalPerLine / lines;\n            if (this.length > lines + 1)\n                perChar = (this.height - totalPerLine) / (this.length - lines - 1);\n        }\n        else {\n            perLine = this.height / lines;\n        }\n        return { firstLine, lastLine, perLine, perChar };\n    }\n    blockAt(height, oracle, top, offset) {\n        let { firstLine, lastLine, perLine, perChar } = this.heightMetrics(oracle, offset);\n        if (oracle.lineWrapping) {\n            let guess = offset + (height < oracle.lineHeight ? 0\n                : Math.round(Math.max(0, Math.min(1, (height - top) / this.height)) * this.length));\n            let line = oracle.doc.lineAt(guess), lineHeight = perLine + line.length * perChar;\n            let lineTop = Math.max(top, height - lineHeight / 2);\n            return new BlockInfo(line.from, line.length, lineTop, lineHeight, 0);\n        }\n        else {\n            let line = Math.max(0, Math.min(lastLine - firstLine, Math.floor((height - top) / perLine)));\n            let { from, length } = oracle.doc.line(firstLine + line);\n            return new BlockInfo(from, length, top + perLine * line, perLine, 0);\n        }\n    }\n    lineAt(value, type, oracle, top, offset) {\n        if (type == QueryType.ByHeight)\n            return this.blockAt(value, oracle, top, offset);\n        if (type == QueryType.ByPosNoHeight) {\n            let { from, to } = oracle.doc.lineAt(value);\n            return new BlockInfo(from, to - from, 0, 0, 0);\n        }\n        let { firstLine, perLine, perChar } = this.heightMetrics(oracle, offset);\n        let line = oracle.doc.lineAt(value), lineHeight = perLine + line.length * perChar;\n        let linesAbove = line.number - firstLine;\n        let lineTop = top + perLine * linesAbove + perChar * (line.from - offset - linesAbove);\n        return new BlockInfo(line.from, line.length, Math.max(top, Math.min(lineTop, top + this.height - lineHeight)), lineHeight, 0);\n    }\n    forEachLine(from, to, oracle, top, offset, f) {\n        from = Math.max(from, offset);\n        to = Math.min(to, offset + this.length);\n        let { firstLine, perLine, perChar } = this.heightMetrics(oracle, offset);\n        for (let pos = from, lineTop = top; pos <= to;) {\n            let line = oracle.doc.lineAt(pos);\n            if (pos == from) {\n                let linesAbove = line.number - firstLine;\n                lineTop += perLine * linesAbove + perChar * (from - offset - linesAbove);\n            }\n            let lineHeight = perLine + perChar * line.length;\n            f(new BlockInfo(line.from, line.length, lineTop, lineHeight, 0));\n            lineTop += lineHeight;\n            pos = line.to + 1;\n        }\n    }\n    replace(from, to, nodes) {\n        let after = this.length - to;\n        if (after > 0) {\n            let last = nodes[nodes.length - 1];\n            if (last instanceof HeightMapGap)\n                nodes[nodes.length - 1] = new HeightMapGap(last.length + after);\n            else\n                nodes.push(null, new HeightMapGap(after - 1));\n        }\n        if (from > 0) {\n            let first = nodes[0];\n            if (first instanceof HeightMapGap)\n                nodes[0] = new HeightMapGap(from + first.length);\n            else\n                nodes.unshift(new HeightMapGap(from - 1), null);\n        }\n        return HeightMap.of(nodes);\n    }\n    decomposeLeft(to, result) {\n        result.push(new HeightMapGap(to - 1), null);\n    }\n    decomposeRight(from, result) {\n        result.push(null, new HeightMapGap(this.length - from - 1));\n    }\n    updateHeight(oracle, offset = 0, force = false, measured) {\n        let end = offset + this.length;\n        if (measured && measured.from <= offset + this.length && measured.more) {\n            // Fill in part of this gap with measured lines. We know there\n            // can't be widgets or collapsed ranges in those lines, because\n            // they would already have been added to the heightmap (gaps\n            // only contain plain text).\n            let nodes = [], pos = Math.max(offset, measured.from), singleHeight = -1;\n            if (measured.from > offset)\n                nodes.push(new HeightMapGap(measured.from - offset - 1).updateHeight(oracle, offset));\n            while (pos <= end && measured.more) {\n                let len = oracle.doc.lineAt(pos).length;\n                if (nodes.length)\n                    nodes.push(null);\n                let height = measured.heights[measured.index++];\n                if (singleHeight == -1)\n                    singleHeight = height;\n                else if (Math.abs(height - singleHeight) >= Epsilon)\n                    singleHeight = -2;\n                let line = new HeightMapText(len, height);\n                line.outdated = false;\n                nodes.push(line);\n                pos += len + 1;\n            }\n            if (pos <= end)\n                nodes.push(null, new HeightMapGap(end - pos).updateHeight(oracle, pos));\n            let result = HeightMap.of(nodes);\n            if (singleHeight < 0 || Math.abs(result.height - this.height) >= Epsilon ||\n                Math.abs(singleHeight - this.heightMetrics(oracle, offset).perLine) >= Epsilon)\n                heightChangeFlag = true;\n            return replace(this, result);\n        }\n        else if (force || this.outdated) {\n            this.setHeight(oracle.heightForGap(offset, offset + this.length));\n            this.outdated = false;\n        }\n        return this;\n    }\n    toString() { return `gap(${this.length})`; }\n}\nclass HeightMapBranch extends HeightMap {\n    constructor(left, brk, right) {\n        super(left.length + brk + right.length, left.height + right.height, brk | (left.outdated || right.outdated ? 2 /* Flag.Outdated */ : 0));\n        this.left = left;\n        this.right = right;\n        this.size = left.size + right.size;\n    }\n    get break() { return this.flags & 1 /* Flag.Break */; }\n    blockAt(height, oracle, top, offset) {\n        let mid = top + this.left.height;\n        return height < mid ? this.left.blockAt(height, oracle, top, offset)\n            : this.right.blockAt(height, oracle, mid, offset + this.left.length + this.break);\n    }\n    lineAt(value, type, oracle, top, offset) {\n        let rightTop = top + this.left.height, rightOffset = offset + this.left.length + this.break;\n        let left = type == QueryType.ByHeight ? value < rightTop : value < rightOffset;\n        let base = left ? this.left.lineAt(value, type, oracle, top, offset)\n            : this.right.lineAt(value, type, oracle, rightTop, rightOffset);\n        if (this.break || (left ? base.to < rightOffset : base.from > rightOffset))\n            return base;\n        let subQuery = type == QueryType.ByPosNoHeight ? QueryType.ByPosNoHeight : QueryType.ByPos;\n        if (left)\n            return base.join(this.right.lineAt(rightOffset, subQuery, oracle, rightTop, rightOffset));\n        else\n            return this.left.lineAt(rightOffset, subQuery, oracle, top, offset).join(base);\n    }\n    forEachLine(from, to, oracle, top, offset, f) {\n        let rightTop = top + this.left.height, rightOffset = offset + this.left.length + this.break;\n        if (this.break) {\n            if (from < rightOffset)\n                this.left.forEachLine(from, to, oracle, top, offset, f);\n            if (to >= rightOffset)\n                this.right.forEachLine(from, to, oracle, rightTop, rightOffset, f);\n        }\n        else {\n            let mid = this.lineAt(rightOffset, QueryType.ByPos, oracle, top, offset);\n            if (from < mid.from)\n                this.left.forEachLine(from, mid.from - 1, oracle, top, offset, f);\n            if (mid.to >= from && mid.from <= to)\n                f(mid);\n            if (to > mid.to)\n                this.right.forEachLine(mid.to + 1, to, oracle, rightTop, rightOffset, f);\n        }\n    }\n    replace(from, to, nodes) {\n        let rightStart = this.left.length + this.break;\n        if (to < rightStart)\n            return this.balanced(this.left.replace(from, to, nodes), this.right);\n        if (from > this.left.length)\n            return this.balanced(this.left, this.right.replace(from - rightStart, to - rightStart, nodes));\n        let result = [];\n        if (from > 0)\n            this.decomposeLeft(from, result);\n        let left = result.length;\n        for (let node of nodes)\n            result.push(node);\n        if (from > 0)\n            mergeGaps(result, left - 1);\n        if (to < this.length) {\n            let right = result.length;\n            this.decomposeRight(to, result);\n            mergeGaps(result, right);\n        }\n        return HeightMap.of(result);\n    }\n    decomposeLeft(to, result) {\n        let left = this.left.length;\n        if (to <= left)\n            return this.left.decomposeLeft(to, result);\n        result.push(this.left);\n        if (this.break) {\n            left++;\n            if (to >= left)\n                result.push(null);\n        }\n        if (to > left)\n            this.right.decomposeLeft(to - left, result);\n    }\n    decomposeRight(from, result) {\n        let left = this.left.length, right = left + this.break;\n        if (from >= right)\n            return this.right.decomposeRight(from - right, result);\n        if (from < left)\n            this.left.decomposeRight(from, result);\n        if (this.break && from < right)\n            result.push(null);\n        result.push(this.right);\n    }\n    balanced(left, right) {\n        if (left.size > 2 * right.size || right.size > 2 * left.size)\n            return HeightMap.of(this.break ? [left, null, right] : [left, right]);\n        this.left = replace(this.left, left);\n        this.right = replace(this.right, right);\n        this.setHeight(left.height + right.height);\n        this.outdated = left.outdated || right.outdated;\n        this.size = left.size + right.size;\n        this.length = left.length + this.break + right.length;\n        return this;\n    }\n    updateHeight(oracle, offset = 0, force = false, measured) {\n        let { left, right } = this, rightStart = offset + left.length + this.break, rebalance = null;\n        if (measured && measured.from <= offset + left.length && measured.more)\n            rebalance = left = left.updateHeight(oracle, offset, force, measured);\n        else\n            left.updateHeight(oracle, offset, force);\n        if (measured && measured.from <= rightStart + right.length && measured.more)\n            rebalance = right = right.updateHeight(oracle, rightStart, force, measured);\n        else\n            right.updateHeight(oracle, rightStart, force);\n        if (rebalance)\n            return this.balanced(left, right);\n        this.height = this.left.height + this.right.height;\n        this.outdated = false;\n        return this;\n    }\n    toString() { return this.left + (this.break ? \" \" : \"-\") + this.right; }\n}\nfunction mergeGaps(nodes, around) {\n    let before, after;\n    if (nodes[around] == null &&\n        (before = nodes[around - 1]) instanceof HeightMapGap &&\n        (after = nodes[around + 1]) instanceof HeightMapGap)\n        nodes.splice(around - 1, 3, new HeightMapGap(before.length + 1 + after.length));\n}\nconst relevantWidgetHeight = 5;\nclass NodeBuilder {\n    constructor(pos, oracle) {\n        this.pos = pos;\n        this.oracle = oracle;\n        this.nodes = [];\n        this.lineStart = -1;\n        this.lineEnd = -1;\n        this.covering = null;\n        this.writtenTo = pos;\n    }\n    get isCovered() {\n        return this.covering && this.nodes[this.nodes.length - 1] == this.covering;\n    }\n    span(_from, to) {\n        if (this.lineStart > -1) {\n            let end = Math.min(to, this.lineEnd), last = this.nodes[this.nodes.length - 1];\n            if (last instanceof HeightMapText)\n                last.length += end - this.pos;\n            else if (end > this.pos || !this.isCovered)\n                this.nodes.push(new HeightMapText(end - this.pos, -1));\n            this.writtenTo = end;\n            if (to > end) {\n                this.nodes.push(null);\n                this.writtenTo++;\n                this.lineStart = -1;\n            }\n        }\n        this.pos = to;\n    }\n    point(from, to, deco) {\n        if (from < to || deco.heightRelevant) {\n            let height = deco.widget ? deco.widget.estimatedHeight : 0;\n            let breaks = deco.widget ? deco.widget.lineBreaks : 0;\n            if (height < 0)\n                height = this.oracle.lineHeight;\n            let len = to - from;\n            if (deco.block) {\n                this.addBlock(new HeightMapBlock(len, height, deco));\n            }\n            else if (len || breaks || height >= relevantWidgetHeight) {\n                this.addLineDeco(height, breaks, len);\n            }\n        }\n        else if (to > from) {\n            this.span(from, to);\n        }\n        if (this.lineEnd > -1 && this.lineEnd < this.pos)\n            this.lineEnd = this.oracle.doc.lineAt(this.pos).to;\n    }\n    enterLine() {\n        if (this.lineStart > -1)\n            return;\n        let { from, to } = this.oracle.doc.lineAt(this.pos);\n        this.lineStart = from;\n        this.lineEnd = to;\n        if (this.writtenTo < from) {\n            if (this.writtenTo < from - 1 || this.nodes[this.nodes.length - 1] == null)\n                this.nodes.push(this.blankContent(this.writtenTo, from - 1));\n            this.nodes.push(null);\n        }\n        if (this.pos > from)\n            this.nodes.push(new HeightMapText(this.pos - from, -1));\n        this.writtenTo = this.pos;\n    }\n    blankContent(from, to) {\n        let gap = new HeightMapGap(to - from);\n        if (this.oracle.doc.lineAt(from).to == to)\n            gap.flags |= 4 /* Flag.SingleLine */;\n        return gap;\n    }\n    ensureLine() {\n        this.enterLine();\n        let last = this.nodes.length ? this.nodes[this.nodes.length - 1] : null;\n        if (last instanceof HeightMapText)\n            return last;\n        let line = new HeightMapText(0, -1);\n        this.nodes.push(line);\n        return line;\n    }\n    addBlock(block) {\n        this.enterLine();\n        let deco = block.deco;\n        if (deco && deco.startSide > 0 && !this.isCovered)\n            this.ensureLine();\n        this.nodes.push(block);\n        this.writtenTo = this.pos = this.pos + block.length;\n        if (deco && deco.endSide > 0)\n            this.covering = block;\n    }\n    addLineDeco(height, breaks, length) {\n        let line = this.ensureLine();\n        line.length += length;\n        line.collapsed += length;\n        line.widgetHeight = Math.max(line.widgetHeight, height);\n        line.breaks += breaks;\n        this.writtenTo = this.pos = this.pos + length;\n    }\n    finish(from) {\n        let last = this.nodes.length == 0 ? null : this.nodes[this.nodes.length - 1];\n        if (this.lineStart > -1 && !(last instanceof HeightMapText) && !this.isCovered)\n            this.nodes.push(new HeightMapText(0, -1));\n        else if (this.writtenTo < this.pos || last == null)\n            this.nodes.push(this.blankContent(this.writtenTo, this.pos));\n        let pos = from;\n        for (let node of this.nodes) {\n            if (node instanceof HeightMapText)\n                node.updateHeight(this.oracle, pos);\n            pos += node ? node.length : 1;\n        }\n        return this.nodes;\n    }\n    // Always called with a region that on both sides either stretches\n    // to a line break or the end of the document.\n    // The returned array uses null to indicate line breaks, but never\n    // starts or ends in a line break, or has multiple line breaks next\n    // to each other.\n    static build(oracle, decorations, from, to) {\n        let builder = new NodeBuilder(from, oracle);\n        RangeSet.spans(decorations, from, to, builder, 0);\n        return builder.finish(from);\n    }\n}\nfunction heightRelevantDecoChanges(a, b, diff) {\n    let comp = new DecorationComparator;\n    RangeSet.compare(a, b, diff, comp, 0);\n    return comp.changes;\n}\nclass DecorationComparator {\n    constructor() {\n        this.changes = [];\n    }\n    compareRange() { }\n    comparePoint(from, to, a, b) {\n        if (from < to || a && a.heightRelevant || b && b.heightRelevant)\n            addRange(from, to, this.changes, 5);\n    }\n}\n\nfunction visiblePixelRange(dom, paddingTop) {\n    let rect = dom.getBoundingClientRect();\n    let doc = dom.ownerDocument, win = doc.defaultView || window;\n    let left = Math.max(0, rect.left), right = Math.min(win.innerWidth, rect.right);\n    let top = Math.max(0, rect.top), bottom = Math.min(win.innerHeight, rect.bottom);\n    for (let parent = dom.parentNode; parent && parent != doc.body;) {\n        if (parent.nodeType == 1) {\n            let elt = parent;\n            let style = window.getComputedStyle(elt);\n            if ((elt.scrollHeight > elt.clientHeight || elt.scrollWidth > elt.clientWidth) &&\n                style.overflow != \"visible\") {\n                let parentRect = elt.getBoundingClientRect();\n                left = Math.max(left, parentRect.left);\n                right = Math.min(right, parentRect.right);\n                top = Math.max(top, parentRect.top);\n                bottom = Math.min(parent == dom.parentNode ? win.innerHeight : bottom, parentRect.bottom);\n            }\n            parent = style.position == \"absolute\" || style.position == \"fixed\" ? elt.offsetParent : elt.parentNode;\n        }\n        else if (parent.nodeType == 11) { // Shadow root\n            parent = parent.host;\n        }\n        else {\n            break;\n        }\n    }\n    return { left: left - rect.left, right: Math.max(left, right) - rect.left,\n        top: top - (rect.top + paddingTop), bottom: Math.max(top, bottom) - (rect.top + paddingTop) };\n}\nfunction fullPixelRange(dom, paddingTop) {\n    let rect = dom.getBoundingClientRect();\n    return { left: 0, right: rect.right - rect.left,\n        top: paddingTop, bottom: rect.bottom - (rect.top + paddingTop) };\n}\n// Line gaps are placeholder widgets used to hide pieces of overlong\n// lines within the viewport, as a kludge to keep the editor\n// responsive when a ridiculously long line is loaded into it.\nclass LineGap {\n    constructor(from, to, size, displaySize) {\n        this.from = from;\n        this.to = to;\n        this.size = size;\n        this.displaySize = displaySize;\n    }\n    static same(a, b) {\n        if (a.length != b.length)\n            return false;\n        for (let i = 0; i < a.length; i++) {\n            let gA = a[i], gB = b[i];\n            if (gA.from != gB.from || gA.to != gB.to || gA.size != gB.size)\n                return false;\n        }\n        return true;\n    }\n    draw(viewState, wrapping) {\n        return Decoration.replace({\n            widget: new LineGapWidget(this.displaySize * (wrapping ? viewState.scaleY : viewState.scaleX), wrapping)\n        }).range(this.from, this.to);\n    }\n}\nclass LineGapWidget extends WidgetType {\n    constructor(size, vertical) {\n        super();\n        this.size = size;\n        this.vertical = vertical;\n    }\n    eq(other) { return other.size == this.size && other.vertical == this.vertical; }\n    toDOM() {\n        let elt = document.createElement(\"div\");\n        if (this.vertical) {\n            elt.style.height = this.size + \"px\";\n        }\n        else {\n            elt.style.width = this.size + \"px\";\n            elt.style.height = \"2px\";\n            elt.style.display = \"inline-block\";\n        }\n        return elt;\n    }\n    get estimatedHeight() { return this.vertical ? this.size : -1; }\n}\nclass ViewState {\n    constructor(state) {\n        this.state = state;\n        // These are contentDOM-local coordinates\n        this.pixelViewport = { left: 0, right: window.innerWidth, top: 0, bottom: 0 };\n        this.inView = true;\n        this.paddingTop = 0; // Padding above the document, scaled\n        this.paddingBottom = 0; // Padding below the document, scaled\n        this.contentDOMWidth = 0; // contentDOM.getBoundingClientRect().width\n        this.contentDOMHeight = 0; // contentDOM.getBoundingClientRect().height\n        this.editorHeight = 0; // scrollDOM.clientHeight, unscaled\n        this.editorWidth = 0; // scrollDOM.clientWidth, unscaled\n        this.scrollTop = 0; // Last seen scrollDOM.scrollTop, scaled\n        this.scrolledToBottom = false;\n        // The CSS-transformation scale of the editor (transformed size /\n        // concrete size)\n        this.scaleX = 1;\n        this.scaleY = 1;\n        // The vertical position (document-relative) to which to anchor the\n        // scroll position. -1 means anchor to the end of the document.\n        this.scrollAnchorPos = 0;\n        // The height at the anchor position. Set by the DOM update phase.\n        // -1 means no height available.\n        this.scrollAnchorHeight = -1;\n        // See VP.MaxDOMHeight\n        this.scaler = IdScaler;\n        this.scrollTarget = null;\n        // Briefly set to true when printing, to disable viewport limiting\n        this.printing = false;\n        // Flag set when editor content was redrawn, so that the next\n        // measure stage knows it must read DOM layout\n        this.mustMeasureContent = true;\n        this.defaultTextDirection = Direction.LTR;\n        this.visibleRanges = [];\n        // Cursor 'assoc' is only significant when the cursor is on a line\n        // wrap point, where it must stick to the character that it is\n        // associated with. Since browsers don't provide a reasonable\n        // interface to set or query this, when a selection is set that\n        // might cause this to be significant, this flag is set. The next\n        // measure phase will check whether the cursor is on a line-wrapping\n        // boundary and, if so, reset it to make sure it is positioned in\n        // the right place.\n        this.mustEnforceCursorAssoc = false;\n        let guessWrapping = state.facet(contentAttributes).some(v => typeof v != \"function\" && v.class == \"cm-lineWrapping\");\n        this.heightOracle = new HeightOracle(guessWrapping);\n        this.stateDeco = state.facet(decorations).filter(d => typeof d != \"function\");\n        this.heightMap = HeightMap.empty().applyChanges(this.stateDeco, Text.empty, this.heightOracle.setDoc(state.doc), [new ChangedRange(0, 0, 0, state.doc.length)]);\n        for (let i = 0; i < 2; i++) {\n            this.viewport = this.getViewport(0, null);\n            if (!this.updateForViewport())\n                break;\n        }\n        this.updateViewportLines();\n        this.lineGaps = this.ensureLineGaps([]);\n        this.lineGapDeco = Decoration.set(this.lineGaps.map(gap => gap.draw(this, false)));\n        this.computeVisibleRanges();\n    }\n    updateForViewport() {\n        let viewports = [this.viewport], { main } = this.state.selection;\n        for (let i = 0; i <= 1; i++) {\n            let pos = i ? main.head : main.anchor;\n            if (!viewports.some(({ from, to }) => pos >= from && pos <= to)) {\n                let { from, to } = this.lineBlockAt(pos);\n                viewports.push(new Viewport(from, to));\n            }\n        }\n        this.viewports = viewports.sort((a, b) => a.from - b.from);\n        return this.updateScaler();\n    }\n    updateScaler() {\n        let scaler = this.scaler;\n        this.scaler = this.heightMap.height <= 7000000 /* VP.MaxDOMHeight */ ? IdScaler :\n            new BigScaler(this.heightOracle, this.heightMap, this.viewports);\n        return scaler.eq(this.scaler) ? 0 : 2 /* UpdateFlag.Height */;\n    }\n    updateViewportLines() {\n        this.viewportLines = [];\n        this.heightMap.forEachLine(this.viewport.from, this.viewport.to, this.heightOracle.setDoc(this.state.doc), 0, 0, block => {\n            this.viewportLines.push(scaleBlock(block, this.scaler));\n        });\n    }\n    update(update, scrollTarget = null) {\n        this.state = update.state;\n        let prevDeco = this.stateDeco;\n        this.stateDeco = this.state.facet(decorations).filter(d => typeof d != \"function\");\n        let contentChanges = update.changedRanges;\n        let heightChanges = ChangedRange.extendWithRanges(contentChanges, heightRelevantDecoChanges(prevDeco, this.stateDeco, update ? update.changes : ChangeSet.empty(this.state.doc.length)));\n        let prevHeight = this.heightMap.height;\n        let scrollAnchor = this.scrolledToBottom ? null : this.scrollAnchorAt(this.scrollTop);\n        clearHeightChangeFlag();\n        this.heightMap = this.heightMap.applyChanges(this.stateDeco, update.startState.doc, this.heightOracle.setDoc(this.state.doc), heightChanges);\n        if (this.heightMap.height != prevHeight || heightChangeFlag)\n            update.flags |= 2 /* UpdateFlag.Height */;\n        if (scrollAnchor) {\n            this.scrollAnchorPos = update.changes.mapPos(scrollAnchor.from, -1);\n            this.scrollAnchorHeight = scrollAnchor.top;\n        }\n        else {\n            this.scrollAnchorPos = -1;\n            this.scrollAnchorHeight = this.heightMap.height;\n        }\n        let viewport = heightChanges.length ? this.mapViewport(this.viewport, update.changes) : this.viewport;\n        if (scrollTarget && (scrollTarget.range.head < viewport.from || scrollTarget.range.head > viewport.to) ||\n            !this.viewportIsAppropriate(viewport))\n            viewport = this.getViewport(0, scrollTarget);\n        let viewportChange = viewport.from != this.viewport.from || viewport.to != this.viewport.to;\n        this.viewport = viewport;\n        update.flags |= this.updateForViewport();\n        if (viewportChange || !update.changes.empty || (update.flags & 2 /* UpdateFlag.Height */))\n            this.updateViewportLines();\n        if (this.lineGaps.length || this.viewport.to - this.viewport.from > (2000 /* LG.Margin */ << 1))\n            this.updateLineGaps(this.ensureLineGaps(this.mapLineGaps(this.lineGaps, update.changes)));\n        update.flags |= this.computeVisibleRanges();\n        if (scrollTarget)\n            this.scrollTarget = scrollTarget;\n        if (!this.mustEnforceCursorAssoc && update.selectionSet && update.view.lineWrapping &&\n            update.state.selection.main.empty && update.state.selection.main.assoc &&\n            !update.state.facet(nativeSelectionHidden))\n            this.mustEnforceCursorAssoc = true;\n    }\n    measure(view) {\n        let dom = view.contentDOM, style = window.getComputedStyle(dom);\n        let oracle = this.heightOracle;\n        let whiteSpace = style.whiteSpace;\n        this.defaultTextDirection = style.direction == \"rtl\" ? Direction.RTL : Direction.LTR;\n        let refresh = this.heightOracle.mustRefreshForWrapping(whiteSpace);\n        let domRect = dom.getBoundingClientRect();\n        let measureContent = refresh || this.mustMeasureContent || this.contentDOMHeight != domRect.height;\n        this.contentDOMHeight = domRect.height;\n        this.mustMeasureContent = false;\n        let result = 0, bias = 0;\n        if (domRect.width && domRect.height) {\n            let { scaleX, scaleY } = getScale(dom, domRect);\n            if (scaleX > .005 && Math.abs(this.scaleX - scaleX) > .005 ||\n                scaleY > .005 && Math.abs(this.scaleY - scaleY) > .005) {\n                this.scaleX = scaleX;\n                this.scaleY = scaleY;\n                result |= 8 /* UpdateFlag.Geometry */;\n                refresh = measureContent = true;\n            }\n        }\n        // Vertical padding\n        let paddingTop = (parseInt(style.paddingTop) || 0) * this.scaleY;\n        let paddingBottom = (parseInt(style.paddingBottom) || 0) * this.scaleY;\n        if (this.paddingTop != paddingTop || this.paddingBottom != paddingBottom) {\n            this.paddingTop = paddingTop;\n            this.paddingBottom = paddingBottom;\n            result |= 8 /* UpdateFlag.Geometry */ | 2 /* UpdateFlag.Height */;\n        }\n        if (this.editorWidth != view.scrollDOM.clientWidth) {\n            if (oracle.lineWrapping)\n                measureContent = true;\n            this.editorWidth = view.scrollDOM.clientWidth;\n            result |= 8 /* UpdateFlag.Geometry */;\n        }\n        let scrollTop = view.scrollDOM.scrollTop * this.scaleY;\n        if (this.scrollTop != scrollTop) {\n            this.scrollAnchorHeight = -1;\n            this.scrollTop = scrollTop;\n        }\n        this.scrolledToBottom = isScrolledToBottom(view.scrollDOM);\n        // Pixel viewport\n        let pixelViewport = (this.printing ? fullPixelRange : visiblePixelRange)(dom, this.paddingTop);\n        let dTop = pixelViewport.top - this.pixelViewport.top, dBottom = pixelViewport.bottom - this.pixelViewport.bottom;\n        this.pixelViewport = pixelViewport;\n        let inView = this.pixelViewport.bottom > this.pixelViewport.top && this.pixelViewport.right > this.pixelViewport.left;\n        if (inView != this.inView) {\n            this.inView = inView;\n            if (inView)\n                measureContent = true;\n        }\n        if (!this.inView && !this.scrollTarget)\n            return 0;\n        let contentWidth = domRect.width;\n        if (this.contentDOMWidth != contentWidth || this.editorHeight != view.scrollDOM.clientHeight) {\n            this.contentDOMWidth = domRect.width;\n            this.editorHeight = view.scrollDOM.clientHeight;\n            result |= 8 /* UpdateFlag.Geometry */;\n        }\n        if (measureContent) {\n            let lineHeights = view.docView.measureVisibleLineHeights(this.viewport);\n            if (oracle.mustRefreshForHeights(lineHeights))\n                refresh = true;\n            if (refresh || oracle.lineWrapping && Math.abs(contentWidth - this.contentDOMWidth) > oracle.charWidth) {\n                let { lineHeight, charWidth, textHeight } = view.docView.measureTextSize();\n                refresh = lineHeight > 0 && oracle.refresh(whiteSpace, lineHeight, charWidth, textHeight, contentWidth / charWidth, lineHeights);\n                if (refresh) {\n                    view.docView.minWidth = 0;\n                    result |= 8 /* UpdateFlag.Geometry */;\n                }\n            }\n            if (dTop > 0 && dBottom > 0)\n                bias = Math.max(dTop, dBottom);\n            else if (dTop < 0 && dBottom < 0)\n                bias = Math.min(dTop, dBottom);\n            clearHeightChangeFlag();\n            for (let vp of this.viewports) {\n                let heights = vp.from == this.viewport.from ? lineHeights : view.docView.measureVisibleLineHeights(vp);\n                this.heightMap = (refresh ? HeightMap.empty().applyChanges(this.stateDeco, Text.empty, this.heightOracle, [new ChangedRange(0, 0, 0, view.state.doc.length)]) : this.heightMap).updateHeight(oracle, 0, refresh, new MeasuredHeights(vp.from, heights));\n            }\n            if (heightChangeFlag)\n                result |= 2 /* UpdateFlag.Height */;\n        }\n        let viewportChange = !this.viewportIsAppropriate(this.viewport, bias) ||\n            this.scrollTarget && (this.scrollTarget.range.head < this.viewport.from ||\n                this.scrollTarget.range.head > this.viewport.to);\n        if (viewportChange) {\n            if (result & 2 /* UpdateFlag.Height */)\n                result |= this.updateScaler();\n            this.viewport = this.getViewport(bias, this.scrollTarget);\n            result |= this.updateForViewport();\n        }\n        if ((result & 2 /* UpdateFlag.Height */) || viewportChange)\n            this.updateViewportLines();\n        if (this.lineGaps.length || this.viewport.to - this.viewport.from > (2000 /* LG.Margin */ << 1))\n            this.updateLineGaps(this.ensureLineGaps(refresh ? [] : this.lineGaps, view));\n        result |= this.computeVisibleRanges();\n        if (this.mustEnforceCursorAssoc) {\n            this.mustEnforceCursorAssoc = false;\n            // This is done in the read stage, because moving the selection\n            // to a line end is going to trigger a layout anyway, so it\n            // can't be a pure write. It should be rare that it does any\n            // writing.\n            view.docView.enforceCursorAssoc();\n        }\n        return result;\n    }\n    get visibleTop() { return this.scaler.fromDOM(this.pixelViewport.top); }\n    get visibleBottom() { return this.scaler.fromDOM(this.pixelViewport.bottom); }\n    getViewport(bias, scrollTarget) {\n        // This will divide VP.Margin between the top and the\n        // bottom, depending on the bias (the change in viewport position\n        // since the last update). It'll hold a number between 0 and 1\n        let marginTop = 0.5 - Math.max(-0.5, Math.min(0.5, bias / 1000 /* VP.Margin */ / 2));\n        let map = this.heightMap, oracle = this.heightOracle;\n        let { visibleTop, visibleBottom } = this;\n        let viewport = new Viewport(map.lineAt(visibleTop - marginTop * 1000 /* VP.Margin */, QueryType.ByHeight, oracle, 0, 0).from, map.lineAt(visibleBottom + (1 - marginTop) * 1000 /* VP.Margin */, QueryType.ByHeight, oracle, 0, 0).to);\n        // If scrollTarget is given, make sure the viewport includes that position\n        if (scrollTarget) {\n            let { head } = scrollTarget.range;\n            if (head < viewport.from || head > viewport.to) {\n                let viewHeight = Math.min(this.editorHeight, this.pixelViewport.bottom - this.pixelViewport.top);\n                let block = map.lineAt(head, QueryType.ByPos, oracle, 0, 0), topPos;\n                if (scrollTarget.y == \"center\")\n                    topPos = (block.top + block.bottom) / 2 - viewHeight / 2;\n                else if (scrollTarget.y == \"start\" || scrollTarget.y == \"nearest\" && head < viewport.from)\n                    topPos = block.top;\n                else\n                    topPos = block.bottom - viewHeight;\n                viewport = new Viewport(map.lineAt(topPos - 1000 /* VP.Margin */ / 2, QueryType.ByHeight, oracle, 0, 0).from, map.lineAt(topPos + viewHeight + 1000 /* VP.Margin */ / 2, QueryType.ByHeight, oracle, 0, 0).to);\n            }\n        }\n        return viewport;\n    }\n    mapViewport(viewport, changes) {\n        let from = changes.mapPos(viewport.from, -1), to = changes.mapPos(viewport.to, 1);\n        return new Viewport(this.heightMap.lineAt(from, QueryType.ByPos, this.heightOracle, 0, 0).from, this.heightMap.lineAt(to, QueryType.ByPos, this.heightOracle, 0, 0).to);\n    }\n    // Checks if a given viewport covers the visible part of the\n    // document and not too much beyond that.\n    viewportIsAppropriate({ from, to }, bias = 0) {\n        if (!this.inView)\n            return true;\n        let { top } = this.heightMap.lineAt(from, QueryType.ByPos, this.heightOracle, 0, 0);\n        let { bottom } = this.heightMap.lineAt(to, QueryType.ByPos, this.heightOracle, 0, 0);\n        let { visibleTop, visibleBottom } = this;\n        return (from == 0 || top <= visibleTop - Math.max(10 /* VP.MinCoverMargin */, Math.min(-bias, 250 /* VP.MaxCoverMargin */))) &&\n            (to == this.state.doc.length ||\n                bottom >= visibleBottom + Math.max(10 /* VP.MinCoverMargin */, Math.min(bias, 250 /* VP.MaxCoverMargin */))) &&\n            (top > visibleTop - 2 * 1000 /* VP.Margin */ && bottom < visibleBottom + 2 * 1000 /* VP.Margin */);\n    }\n    mapLineGaps(gaps, changes) {\n        if (!gaps.length || changes.empty)\n            return gaps;\n        let mapped = [];\n        for (let gap of gaps)\n            if (!changes.touchesRange(gap.from, gap.to))\n                mapped.push(new LineGap(changes.mapPos(gap.from), changes.mapPos(gap.to), gap.size, gap.displaySize));\n        return mapped;\n    }\n    // Computes positions in the viewport where the start or end of a\n    // line should be hidden, trying to reuse existing line gaps when\n    // appropriate to avoid unneccesary redraws.\n    // Uses crude character-counting for the positioning and sizing,\n    // since actual DOM coordinates aren't always available and\n    // predictable. Relies on generous margins (see LG.Margin) to hide\n    // the artifacts this might produce from the user.\n    ensureLineGaps(current, mayMeasure) {\n        let wrapping = this.heightOracle.lineWrapping;\n        let margin = wrapping ? 10000 /* LG.MarginWrap */ : 2000 /* LG.Margin */, halfMargin = margin >> 1, doubleMargin = margin << 1;\n        // The non-wrapping logic won't work at all in predominantly right-to-left text.\n        if (this.defaultTextDirection != Direction.LTR && !wrapping)\n            return [];\n        let gaps = [];\n        let addGap = (from, to, line, structure) => {\n            if (to - from < halfMargin)\n                return;\n            let sel = this.state.selection.main, avoid = [sel.from];\n            if (!sel.empty)\n                avoid.push(sel.to);\n            for (let pos of avoid) {\n                if (pos > from && pos < to) {\n                    addGap(from, pos - 10 /* LG.SelectionMargin */, line, structure);\n                    addGap(pos + 10 /* LG.SelectionMargin */, to, line, structure);\n                    return;\n                }\n            }\n            let gap = find(current, gap => gap.from >= line.from && gap.to <= line.to &&\n                Math.abs(gap.from - from) < halfMargin && Math.abs(gap.to - to) < halfMargin &&\n                !avoid.some(pos => gap.from < pos && gap.to > pos));\n            if (!gap) {\n                // When scrolling down, snap gap ends to line starts to avoid shifts in wrapping\n                if (to < line.to && mayMeasure && wrapping &&\n                    mayMeasure.visibleRanges.some(r => r.from <= to && r.to >= to)) {\n                    let lineStart = mayMeasure.moveToLineBoundary(EditorSelection.cursor(to), false, true).head;\n                    if (lineStart > from)\n                        to = lineStart;\n                }\n                let size = this.gapSize(line, from, to, structure);\n                let displaySize = wrapping || size < 2000000 /* VP.MaxHorizGap */ ? size : 2000000 /* VP.MaxHorizGap */;\n                gap = new LineGap(from, to, size, displaySize);\n            }\n            gaps.push(gap);\n        };\n        let checkLine = (line) => {\n            if (line.length < doubleMargin || line.type != BlockType.Text)\n                return;\n            let structure = lineStructure(line.from, line.to, this.stateDeco);\n            if (structure.total < doubleMargin)\n                return;\n            let target = this.scrollTarget ? this.scrollTarget.range.head : null;\n            let viewFrom, viewTo;\n            if (wrapping) {\n                let marginHeight = (margin / this.heightOracle.lineLength) * this.heightOracle.lineHeight;\n                let top, bot;\n                if (target != null) {\n                    let targetFrac = findFraction(structure, target);\n                    let spaceFrac = ((this.visibleBottom - this.visibleTop) / 2 + marginHeight) / line.height;\n                    top = targetFrac - spaceFrac;\n                    bot = targetFrac + spaceFrac;\n                }\n                else {\n                    top = (this.visibleTop - line.top - marginHeight) / line.height;\n                    bot = (this.visibleBottom - line.top + marginHeight) / line.height;\n                }\n                viewFrom = findPosition(structure, top);\n                viewTo = findPosition(structure, bot);\n            }\n            else {\n                let totalWidth = structure.total * this.heightOracle.charWidth;\n                let marginWidth = margin * this.heightOracle.charWidth;\n                let horizOffset = 0;\n                if (totalWidth > 2000000 /* VP.MaxHorizGap */)\n                    for (let old of current) {\n                        if (old.from >= line.from && old.from < line.to && old.size != old.displaySize &&\n                            old.from * this.heightOracle.charWidth + horizOffset < this.pixelViewport.left)\n                            horizOffset = old.size - old.displaySize;\n                    }\n                let pxLeft = this.pixelViewport.left + horizOffset, pxRight = this.pixelViewport.right + horizOffset;\n                let left, right;\n                if (target != null) {\n                    let targetFrac = findFraction(structure, target);\n                    let spaceFrac = ((pxRight - pxLeft) / 2 + marginWidth) / totalWidth;\n                    left = targetFrac - spaceFrac;\n                    right = targetFrac + spaceFrac;\n                }\n                else {\n                    left = (pxLeft - marginWidth) / totalWidth;\n                    right = (pxRight + marginWidth) / totalWidth;\n                }\n                viewFrom = findPosition(structure, left);\n                viewTo = findPosition(structure, right);\n            }\n            if (viewFrom > line.from)\n                addGap(line.from, viewFrom, line, structure);\n            if (viewTo < line.to)\n                addGap(viewTo, line.to, line, structure);\n        };\n        for (let line of this.viewportLines) {\n            if (Array.isArray(line.type))\n                line.type.forEach(checkLine);\n            else\n                checkLine(line);\n        }\n        return gaps;\n    }\n    gapSize(line, from, to, structure) {\n        let fraction = findFraction(structure, to) - findFraction(structure, from);\n        if (this.heightOracle.lineWrapping) {\n            return line.height * fraction;\n        }\n        else {\n            return structure.total * this.heightOracle.charWidth * fraction;\n        }\n    }\n    updateLineGaps(gaps) {\n        if (!LineGap.same(gaps, this.lineGaps)) {\n            this.lineGaps = gaps;\n            this.lineGapDeco = Decoration.set(gaps.map(gap => gap.draw(this, this.heightOracle.lineWrapping)));\n        }\n    }\n    computeVisibleRanges() {\n        let deco = this.stateDeco;\n        if (this.lineGaps.length)\n            deco = deco.concat(this.lineGapDeco);\n        let ranges = [];\n        RangeSet.spans(deco, this.viewport.from, this.viewport.to, {\n            span(from, to) { ranges.push({ from, to }); },\n            point() { }\n        }, 20);\n        let changed = ranges.length != this.visibleRanges.length ||\n            this.visibleRanges.some((r, i) => r.from != ranges[i].from || r.to != ranges[i].to);\n        this.visibleRanges = ranges;\n        return changed ? 4 /* UpdateFlag.Viewport */ : 0;\n    }\n    lineBlockAt(pos) {\n        return (pos >= this.viewport.from && pos <= this.viewport.to &&\n            this.viewportLines.find(b => b.from <= pos && b.to >= pos)) ||\n            scaleBlock(this.heightMap.lineAt(pos, QueryType.ByPos, this.heightOracle, 0, 0), this.scaler);\n    }\n    lineBlockAtHeight(height) {\n        return (height >= this.viewportLines[0].top && height <= this.viewportLines[this.viewportLines.length - 1].bottom &&\n            this.viewportLines.find(l => l.top <= height && l.bottom >= height)) ||\n            scaleBlock(this.heightMap.lineAt(this.scaler.fromDOM(height), QueryType.ByHeight, this.heightOracle, 0, 0), this.scaler);\n    }\n    scrollAnchorAt(scrollTop) {\n        let block = this.lineBlockAtHeight(scrollTop + 8);\n        return block.from >= this.viewport.from || this.viewportLines[0].top - scrollTop > 200 ? block : this.viewportLines[0];\n    }\n    elementAtHeight(height) {\n        return scaleBlock(this.heightMap.blockAt(this.scaler.fromDOM(height), this.heightOracle, 0, 0), this.scaler);\n    }\n    get docHeight() {\n        return this.scaler.toDOM(this.heightMap.height);\n    }\n    get contentHeight() {\n        return this.docHeight + this.paddingTop + this.paddingBottom;\n    }\n}\nclass Viewport {\n    constructor(from, to) {\n        this.from = from;\n        this.to = to;\n    }\n}\nfunction lineStructure(from, to, stateDeco) {\n    let ranges = [], pos = from, total = 0;\n    RangeSet.spans(stateDeco, from, to, {\n        span() { },\n        point(from, to) {\n            if (from > pos) {\n                ranges.push({ from: pos, to: from });\n                total += from - pos;\n            }\n            pos = to;\n        }\n    }, 20); // We're only interested in collapsed ranges of a significant size\n    if (pos < to) {\n        ranges.push({ from: pos, to });\n        total += to - pos;\n    }\n    return { total, ranges };\n}\nfunction findPosition({ total, ranges }, ratio) {\n    if (ratio <= 0)\n        return ranges[0].from;\n    if (ratio >= 1)\n        return ranges[ranges.length - 1].to;\n    let dist = Math.floor(total * ratio);\n    for (let i = 0;; i++) {\n        let { from, to } = ranges[i], size = to - from;\n        if (dist <= size)\n            return from + dist;\n        dist -= size;\n    }\n}\nfunction findFraction(structure, pos) {\n    let counted = 0;\n    for (let { from, to } of structure.ranges) {\n        if (pos <= to) {\n            counted += pos - from;\n            break;\n        }\n        counted += to - from;\n    }\n    return counted / structure.total;\n}\nfunction find(array, f) {\n    for (let val of array)\n        if (f(val))\n            return val;\n    return undefined;\n}\n// Don't scale when the document height is within the range of what\n// the DOM can handle.\nconst IdScaler = {\n    toDOM(n) { return n; },\n    fromDOM(n) { return n; },\n    scale: 1,\n    eq(other) { return other == this; }\n};\n// When the height is too big (> VP.MaxDOMHeight), scale down the\n// regions outside the viewports so that the total height is\n// VP.MaxDOMHeight.\nclass BigScaler {\n    constructor(oracle, heightMap, viewports) {\n        let vpHeight = 0, base = 0, domBase = 0;\n        this.viewports = viewports.map(({ from, to }) => {\n            let top = heightMap.lineAt(from, QueryType.ByPos, oracle, 0, 0).top;\n            let bottom = heightMap.lineAt(to, QueryType.ByPos, oracle, 0, 0).bottom;\n            vpHeight += bottom - top;\n            return { from, to, top, bottom, domTop: 0, domBottom: 0 };\n        });\n        this.scale = (7000000 /* VP.MaxDOMHeight */ - vpHeight) / (heightMap.height - vpHeight);\n        for (let obj of this.viewports) {\n            obj.domTop = domBase + (obj.top - base) * this.scale;\n            domBase = obj.domBottom = obj.domTop + (obj.bottom - obj.top);\n            base = obj.bottom;\n        }\n    }\n    toDOM(n) {\n        for (let i = 0, base = 0, domBase = 0;; i++) {\n            let vp = i < this.viewports.length ? this.viewports[i] : null;\n            if (!vp || n < vp.top)\n                return domBase + (n - base) * this.scale;\n            if (n <= vp.bottom)\n                return vp.domTop + (n - vp.top);\n            base = vp.bottom;\n            domBase = vp.domBottom;\n        }\n    }\n    fromDOM(n) {\n        for (let i = 0, base = 0, domBase = 0;; i++) {\n            let vp = i < this.viewports.length ? this.viewports[i] : null;\n            if (!vp || n < vp.domTop)\n                return base + (n - domBase) / this.scale;\n            if (n <= vp.domBottom)\n                return vp.top + (n - vp.domTop);\n            base = vp.bottom;\n            domBase = vp.domBottom;\n        }\n    }\n    eq(other) {\n        if (!(other instanceof BigScaler))\n            return false;\n        return this.scale == other.scale && this.viewports.length == other.viewports.length &&\n            this.viewports.every((vp, i) => vp.from == other.viewports[i].from && vp.to == other.viewports[i].to);\n    }\n}\nfunction scaleBlock(block, scaler) {\n    if (scaler.scale == 1)\n        return block;\n    let bTop = scaler.toDOM(block.top), bBottom = scaler.toDOM(block.bottom);\n    return new BlockInfo(block.from, block.length, bTop, bBottom - bTop, Array.isArray(block._content) ? block._content.map(b => scaleBlock(b, scaler)) : block._content);\n}\n\nconst theme = /*@__PURE__*/Facet.define({ combine: strs => strs.join(\" \") });\nconst darkTheme = /*@__PURE__*/Facet.define({ combine: values => values.indexOf(true) > -1 });\nconst baseThemeID = /*@__PURE__*/StyleModule.newName(), baseLightID = /*@__PURE__*/StyleModule.newName(), baseDarkID = /*@__PURE__*/StyleModule.newName();\nconst lightDarkIDs = { \"&light\": \".\" + baseLightID, \"&dark\": \".\" + baseDarkID };\nfunction buildTheme(main, spec, scopes) {\n    return new StyleModule(spec, {\n        finish(sel) {\n            return /&/.test(sel) ? sel.replace(/&\\w*/, m => {\n                if (m == \"&\")\n                    return main;\n                if (!scopes || !scopes[m])\n                    throw new RangeError(`Unsupported selector: ${m}`);\n                return scopes[m];\n            }) : main + \" \" + sel;\n        }\n    });\n}\nconst baseTheme$1 = /*@__PURE__*/buildTheme(\".\" + baseThemeID, {\n    \"&\": {\n        position: \"relative !important\",\n        boxSizing: \"border-box\",\n        \"&.cm-focused\": {\n            // Provide a simple default outline to make sure a focused\n            // editor is visually distinct. Can't leave the default behavior\n            // because that will apply to the content element, which is\n            // inside the scrollable container and doesn't include the\n            // gutters. We also can't use an 'auto' outline, since those\n            // are, for some reason, drawn behind the element content, which\n            // will cause things like the active line background to cover\n            // the outline (#297).\n            outline: \"1px dotted #212121\"\n        },\n        display: \"flex !important\",\n        flexDirection: \"column\"\n    },\n    \".cm-scroller\": {\n        display: \"flex !important\",\n        alignItems: \"flex-start !important\",\n        fontFamily: \"monospace\",\n        lineHeight: 1.4,\n        height: \"100%\",\n        overflowX: \"auto\",\n        position: \"relative\",\n        zIndex: 0,\n        overflowAnchor: \"none\",\n    },\n    \".cm-content\": {\n        margin: 0,\n        flexGrow: 2,\n        flexShrink: 0,\n        display: \"block\",\n        whiteSpace: \"pre\",\n        wordWrap: \"normal\", // https://github.com/codemirror/dev/issues/456\n        boxSizing: \"border-box\",\n        minHeight: \"100%\",\n        padding: \"4px 0\",\n        outline: \"none\",\n        \"&[contenteditable=true]\": {\n            WebkitUserModify: \"read-write-plaintext-only\",\n        }\n    },\n    \".cm-lineWrapping\": {\n        whiteSpace_fallback: \"pre-wrap\", // For IE\n        whiteSpace: \"break-spaces\",\n        wordBreak: \"break-word\", // For Safari, which doesn't support overflow-wrap: anywhere\n        overflowWrap: \"anywhere\",\n        flexShrink: 1\n    },\n    \"&light .cm-content\": { caretColor: \"black\" },\n    \"&dark .cm-content\": { caretColor: \"white\" },\n    \".cm-line\": {\n        display: \"block\",\n        padding: \"0 2px 0 6px\"\n    },\n    \".cm-layer\": {\n        position: \"absolute\",\n        left: 0,\n        top: 0,\n        contain: \"size style\",\n        \"& > *\": {\n            position: \"absolute\"\n        }\n    },\n    \"&light .cm-selectionBackground\": {\n        background: \"#d9d9d9\"\n    },\n    \"&dark .cm-selectionBackground\": {\n        background: \"#222\"\n    },\n    \"&light.cm-focused > .cm-scroller > .cm-selectionLayer .cm-selectionBackground\": {\n        background: \"#d7d4f0\"\n    },\n    \"&dark.cm-focused > .cm-scroller > .cm-selectionLayer .cm-selectionBackground\": {\n        background: \"#233\"\n    },\n    \".cm-cursorLayer\": {\n        pointerEvents: \"none\"\n    },\n    \"&.cm-focused > .cm-scroller > .cm-cursorLayer\": {\n        animation: \"steps(1) cm-blink 1.2s infinite\"\n    },\n    // Two animations defined so that we can switch between them to\n    // restart the animation without forcing another style\n    // recomputation.\n    \"@keyframes cm-blink\": { \"0%\": {}, \"50%\": { opacity: 0 }, \"100%\": {} },\n    \"@keyframes cm-blink2\": { \"0%\": {}, \"50%\": { opacity: 0 }, \"100%\": {} },\n    \".cm-cursor, .cm-dropCursor\": {\n        borderLeft: \"1.2px solid black\",\n        marginLeft: \"-0.6px\",\n        pointerEvents: \"none\",\n    },\n    \".cm-cursor\": {\n        display: \"none\"\n    },\n    \"&dark .cm-cursor\": {\n        borderLeftColor: \"#ddd\"\n    },\n    \".cm-dropCursor\": {\n        position: \"absolute\"\n    },\n    \"&.cm-focused > .cm-scroller > .cm-cursorLayer .cm-cursor\": {\n        display: \"block\"\n    },\n    \".cm-iso\": {\n        unicodeBidi: \"isolate\"\n    },\n    \".cm-announced\": {\n        position: \"fixed\",\n        top: \"-10000px\"\n    },\n    \"@media print\": {\n        \".cm-announced\": { display: \"none\" }\n    },\n    \"&light .cm-activeLine\": { backgroundColor: \"#cceeff44\" },\n    \"&dark .cm-activeLine\": { backgroundColor: \"#99eeff33\" },\n    \"&light .cm-specialChar\": { color: \"red\" },\n    \"&dark .cm-specialChar\": { color: \"#f78\" },\n    \".cm-gutters\": {\n        flexShrink: 0,\n        display: \"flex\",\n        height: \"100%\",\n        boxSizing: \"border-box\",\n        insetInlineStart: 0,\n        zIndex: 200\n    },\n    \"&light .cm-gutters\": {\n        backgroundColor: \"#f5f5f5\",\n        color: \"#6c6c6c\",\n        borderRight: \"1px solid #ddd\"\n    },\n    \"&dark .cm-gutters\": {\n        backgroundColor: \"#333338\",\n        color: \"#ccc\"\n    },\n    \".cm-gutter\": {\n        display: \"flex !important\", // Necessary -- prevents margin collapsing\n        flexDirection: \"column\",\n        flexShrink: 0,\n        boxSizing: \"border-box\",\n        minHeight: \"100%\",\n        overflow: \"hidden\"\n    },\n    \".cm-gutterElement\": {\n        boxSizing: \"border-box\"\n    },\n    \".cm-lineNumbers .cm-gutterElement\": {\n        padding: \"0 3px 0 5px\",\n        minWidth: \"20px\",\n        textAlign: \"right\",\n        whiteSpace: \"nowrap\"\n    },\n    \"&light .cm-activeLineGutter\": {\n        backgroundColor: \"#e2f2ff\"\n    },\n    \"&dark .cm-activeLineGutter\": {\n        backgroundColor: \"#222227\"\n    },\n    \".cm-panels\": {\n        boxSizing: \"border-box\",\n        position: \"sticky\",\n        left: 0,\n        right: 0,\n        zIndex: 300\n    },\n    \"&light .cm-panels\": {\n        backgroundColor: \"#f5f5f5\",\n        color: \"black\"\n    },\n    \"&light .cm-panels-top\": {\n        borderBottom: \"1px solid #ddd\"\n    },\n    \"&light .cm-panels-bottom\": {\n        borderTop: \"1px solid #ddd\"\n    },\n    \"&dark .cm-panels\": {\n        backgroundColor: \"#333338\",\n        color: \"white\"\n    },\n    \".cm-tab\": {\n        display: \"inline-block\",\n        overflow: \"hidden\",\n        verticalAlign: \"bottom\"\n    },\n    \".cm-widgetBuffer\": {\n        verticalAlign: \"text-top\",\n        height: \"1em\",\n        width: 0,\n        display: \"inline\"\n    },\n    \".cm-placeholder\": {\n        color: \"#888\",\n        display: \"inline-block\",\n        verticalAlign: \"top\",\n    },\n    \".cm-highlightSpace\": {\n        backgroundImage: \"radial-gradient(circle at 50% 55%, #aaa 20%, transparent 5%)\",\n        backgroundPosition: \"center\",\n    },\n    \".cm-highlightTab\": {\n        backgroundImage: `url('data:image/svg+xml,<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"200\" height=\"20\"><path stroke=\"%23888\" stroke-width=\"1\" fill=\"none\" d=\"M1 10H196L190 5M190 15L196 10M197 4L197 16\"/></svg>')`,\n        backgroundSize: \"auto 100%\",\n        backgroundPosition: \"right 90%\",\n        backgroundRepeat: \"no-repeat\"\n    },\n    \".cm-trailingSpace\": {\n        backgroundColor: \"#ff332255\"\n    },\n    \".cm-button\": {\n        verticalAlign: \"middle\",\n        color: \"inherit\",\n        fontSize: \"70%\",\n        padding: \".2em 1em\",\n        borderRadius: \"1px\"\n    },\n    \"&light .cm-button\": {\n        backgroundImage: \"linear-gradient(#eff1f5, #d9d9df)\",\n        border: \"1px solid #888\",\n        \"&:active\": {\n            backgroundImage: \"linear-gradient(#b4b4b4, #d0d3d6)\"\n        }\n    },\n    \"&dark .cm-button\": {\n        backgroundImage: \"linear-gradient(#393939, #111)\",\n        border: \"1px solid #888\",\n        \"&:active\": {\n            backgroundImage: \"linear-gradient(#111, #333)\"\n        }\n    },\n    \".cm-textfield\": {\n        verticalAlign: \"middle\",\n        color: \"inherit\",\n        fontSize: \"70%\",\n        border: \"1px solid silver\",\n        padding: \".2em .5em\"\n    },\n    \"&light .cm-textfield\": {\n        backgroundColor: \"white\"\n    },\n    \"&dark .cm-textfield\": {\n        border: \"1px solid #555\",\n        backgroundColor: \"inherit\"\n    }\n}, lightDarkIDs);\n\nconst observeOptions = {\n    childList: true,\n    characterData: true,\n    subtree: true,\n    attributes: true,\n    characterDataOldValue: true\n};\n// IE11 has very broken mutation observers, so we also listen to\n// DOMCharacterDataModified there\nconst useCharData = browser.ie && browser.ie_version <= 11;\nclass DOMObserver {\n    constructor(view) {\n        this.view = view;\n        this.active = false;\n        this.editContext = null;\n        // The known selection. Kept in our own object, as opposed to just\n        // directly accessing the selection because:\n        //  - Safari doesn't report the right selection in shadow DOM\n        //  - Reading from the selection forces a DOM layout\n        //  - This way, we can ignore selectionchange events if we have\n        //    already seen the 'new' selection\n        this.selectionRange = new DOMSelectionState;\n        // Set when a selection change is detected, cleared on flush\n        this.selectionChanged = false;\n        this.delayedFlush = -1;\n        this.resizeTimeout = -1;\n        this.queue = [];\n        this.delayedAndroidKey = null;\n        this.flushingAndroidKey = -1;\n        this.lastChange = 0;\n        this.scrollTargets = [];\n        this.intersection = null;\n        this.resizeScroll = null;\n        this.intersecting = false;\n        this.gapIntersection = null;\n        this.gaps = [];\n        this.printQuery = null;\n        // Timeout for scheduling check of the parents that need scroll handlers\n        this.parentCheck = -1;\n        this.dom = view.contentDOM;\n        this.observer = new MutationObserver(mutations => {\n            for (let mut of mutations)\n                this.queue.push(mut);\n            // IE11 will sometimes (on typing over a selection or\n            // backspacing out a single character text node) call the\n            // observer callback before actually updating the DOM.\n            //\n            // Unrelatedly, iOS Safari will, when ending a composition,\n            // sometimes first clear it, deliver the mutations, and then\n            // reinsert the finished text. CodeMirror's handling of the\n            // deletion will prevent the reinsertion from happening,\n            // breaking composition.\n            if ((browser.ie && browser.ie_version <= 11 || browser.ios && view.composing) &&\n                mutations.some(m => m.type == \"childList\" && m.removedNodes.length ||\n                    m.type == \"characterData\" && m.oldValue.length > m.target.nodeValue.length))\n                this.flushSoon();\n            else\n                this.flush();\n        });\n        if (window.EditContext && view.constructor.EDIT_CONTEXT !== false &&\n            // Chrome <126 doesn't support inverted selections in edit context (#1392)\n            !(browser.chrome && browser.chrome_version < 126)) {\n            this.editContext = new EditContextManager(view);\n            if (view.state.facet(editable))\n                view.contentDOM.editContext = this.editContext.editContext;\n        }\n        if (useCharData)\n            this.onCharData = (event) => {\n                this.queue.push({ target: event.target,\n                    type: \"characterData\",\n                    oldValue: event.prevValue });\n                this.flushSoon();\n            };\n        this.onSelectionChange = this.onSelectionChange.bind(this);\n        this.onResize = this.onResize.bind(this);\n        this.onPrint = this.onPrint.bind(this);\n        this.onScroll = this.onScroll.bind(this);\n        if (window.matchMedia)\n            this.printQuery = window.matchMedia(\"print\");\n        if (typeof ResizeObserver == \"function\") {\n            this.resizeScroll = new ResizeObserver(() => {\n                var _a;\n                if (((_a = this.view.docView) === null || _a === void 0 ? void 0 : _a.lastUpdate) < Date.now() - 75)\n                    this.onResize();\n            });\n            this.resizeScroll.observe(view.scrollDOM);\n        }\n        this.addWindowListeners(this.win = view.win);\n        this.start();\n        if (typeof IntersectionObserver == \"function\") {\n            this.intersection = new IntersectionObserver(entries => {\n                if (this.parentCheck < 0)\n                    this.parentCheck = setTimeout(this.listenForScroll.bind(this), 1000);\n                if (entries.length > 0 && (entries[entries.length - 1].intersectionRatio > 0) != this.intersecting) {\n                    this.intersecting = !this.intersecting;\n                    if (this.intersecting != this.view.inView)\n                        this.onScrollChanged(document.createEvent(\"Event\"));\n                }\n            }, { threshold: [0, .001] });\n            this.intersection.observe(this.dom);\n            this.gapIntersection = new IntersectionObserver(entries => {\n                if (entries.length > 0 && entries[entries.length - 1].intersectionRatio > 0)\n                    this.onScrollChanged(document.createEvent(\"Event\"));\n            }, {});\n        }\n        this.listenForScroll();\n        this.readSelectionRange();\n    }\n    onScrollChanged(e) {\n        this.view.inputState.runHandlers(\"scroll\", e);\n        if (this.intersecting)\n            this.view.measure();\n    }\n    onScroll(e) {\n        if (this.intersecting)\n            this.flush(false);\n        if (this.editContext)\n            this.view.requestMeasure(this.editContext.measureReq);\n        this.onScrollChanged(e);\n    }\n    onResize() {\n        if (this.resizeTimeout < 0)\n            this.resizeTimeout = setTimeout(() => {\n                this.resizeTimeout = -1;\n                this.view.requestMeasure();\n            }, 50);\n    }\n    onPrint(event) {\n        if ((event.type == \"change\" || !event.type) && !event.matches)\n            return;\n        this.view.viewState.printing = true;\n        this.view.measure();\n        setTimeout(() => {\n            this.view.viewState.printing = false;\n            this.view.requestMeasure();\n        }, 500);\n    }\n    updateGaps(gaps) {\n        if (this.gapIntersection && (gaps.length != this.gaps.length || this.gaps.some((g, i) => g != gaps[i]))) {\n            this.gapIntersection.disconnect();\n            for (let gap of gaps)\n                this.gapIntersection.observe(gap);\n            this.gaps = gaps;\n        }\n    }\n    onSelectionChange(event) {\n        let wasChanged = this.selectionChanged;\n        if (!this.readSelectionRange() || this.delayedAndroidKey)\n            return;\n        let { view } = this, sel = this.selectionRange;\n        if (view.state.facet(editable) ? view.root.activeElement != this.dom : !hasSelection(this.dom, sel))\n            return;\n        let context = sel.anchorNode && view.docView.nearest(sel.anchorNode);\n        if (context && context.ignoreEvent(event)) {\n            if (!wasChanged)\n                this.selectionChanged = false;\n            return;\n        }\n        // Deletions on IE11 fire their events in the wrong order, giving\n        // us a selection change event before the DOM changes are\n        // reported.\n        // Chrome Android has a similar issue when backspacing out a\n        // selection (#645).\n        if ((browser.ie && browser.ie_version <= 11 || browser.android && browser.chrome) && !view.state.selection.main.empty &&\n            // (Selection.isCollapsed isn't reliable on IE)\n            sel.focusNode && isEquivalentPosition(sel.focusNode, sel.focusOffset, sel.anchorNode, sel.anchorOffset))\n            this.flushSoon();\n        else\n            this.flush(false);\n    }\n    readSelectionRange() {\n        let { view } = this;\n        // The Selection object is broken in shadow roots in Safari. See\n        // https://github.com/codemirror/dev/issues/414\n        let selection = getSelection(view.root);\n        if (!selection)\n            return false;\n        let range = browser.safari && view.root.nodeType == 11 &&\n            view.root.activeElement == this.dom &&\n            safariSelectionRangeHack(this.view, selection) || selection;\n        if (!range || this.selectionRange.eq(range))\n            return false;\n        let local = hasSelection(this.dom, range);\n        // Detect the situation where the browser has, on focus, moved the\n        // selection to the start of the content element. Reset it to the\n        // position from the editor state.\n        if (local && !this.selectionChanged &&\n            view.inputState.lastFocusTime > Date.now() - 200 &&\n            view.inputState.lastTouchTime < Date.now() - 300 &&\n            atElementStart(this.dom, range)) {\n            this.view.inputState.lastFocusTime = 0;\n            view.docView.updateSelection();\n            return false;\n        }\n        this.selectionRange.setRange(range);\n        if (local)\n            this.selectionChanged = true;\n        return true;\n    }\n    setSelectionRange(anchor, head) {\n        this.selectionRange.set(anchor.node, anchor.offset, head.node, head.offset);\n        this.selectionChanged = false;\n    }\n    clearSelectionRange() {\n        this.selectionRange.set(null, 0, null, 0);\n    }\n    listenForScroll() {\n        this.parentCheck = -1;\n        let i = 0, changed = null;\n        for (let dom = this.dom; dom;) {\n            if (dom.nodeType == 1) {\n                if (!changed && i < this.scrollTargets.length && this.scrollTargets[i] == dom)\n                    i++;\n                else if (!changed)\n                    changed = this.scrollTargets.slice(0, i);\n                if (changed)\n                    changed.push(dom);\n                dom = dom.assignedSlot || dom.parentNode;\n            }\n            else if (dom.nodeType == 11) { // Shadow root\n                dom = dom.host;\n            }\n            else {\n                break;\n            }\n        }\n        if (i < this.scrollTargets.length && !changed)\n            changed = this.scrollTargets.slice(0, i);\n        if (changed) {\n            for (let dom of this.scrollTargets)\n                dom.removeEventListener(\"scroll\", this.onScroll);\n            for (let dom of this.scrollTargets = changed)\n                dom.addEventListener(\"scroll\", this.onScroll);\n        }\n    }\n    ignore(f) {\n        if (!this.active)\n            return f();\n        try {\n            this.stop();\n            return f();\n        }\n        finally {\n            this.start();\n            this.clear();\n        }\n    }\n    start() {\n        if (this.active)\n            return;\n        this.observer.observe(this.dom, observeOptions);\n        if (useCharData)\n            this.dom.addEventListener(\"DOMCharacterDataModified\", this.onCharData);\n        this.active = true;\n    }\n    stop() {\n        if (!this.active)\n            return;\n        this.active = false;\n        this.observer.disconnect();\n        if (useCharData)\n            this.dom.removeEventListener(\"DOMCharacterDataModified\", this.onCharData);\n    }\n    // Throw away any pending changes\n    clear() {\n        this.processRecords();\n        this.queue.length = 0;\n        this.selectionChanged = false;\n    }\n    // Chrome Android, especially in combination with GBoard, not only\n    // doesn't reliably fire regular key events, but also often\n    // surrounds the effect of enter or backspace with a bunch of\n    // composition events that, when interrupted, cause text duplication\n    // or other kinds of corruption. This hack makes the editor back off\n    // from handling DOM changes for a moment when such a key is\n    // detected (via beforeinput or keydown), and then tries to flush\n    // them or, if that has no effect, dispatches the given key.\n    delayAndroidKey(key, keyCode) {\n        var _a;\n        if (!this.delayedAndroidKey) {\n            let flush = () => {\n                let key = this.delayedAndroidKey;\n                if (key) {\n                    this.clearDelayedAndroidKey();\n                    this.view.inputState.lastKeyCode = key.keyCode;\n                    this.view.inputState.lastKeyTime = Date.now();\n                    let flushed = this.flush();\n                    if (!flushed && key.force)\n                        dispatchKey(this.dom, key.key, key.keyCode);\n                }\n            };\n            this.flushingAndroidKey = this.view.win.requestAnimationFrame(flush);\n        }\n        // Since backspace beforeinput is sometimes signalled spuriously,\n        // Enter always takes precedence.\n        if (!this.delayedAndroidKey || key == \"Enter\")\n            this.delayedAndroidKey = {\n                key, keyCode,\n                // Only run the key handler when no changes are detected if\n                // this isn't coming right after another change, in which case\n                // it is probably part of a weird chain of updates, and should\n                // be ignored if it returns the DOM to its previous state.\n                force: this.lastChange < Date.now() - 50 || !!((_a = this.delayedAndroidKey) === null || _a === void 0 ? void 0 : _a.force)\n            };\n    }\n    clearDelayedAndroidKey() {\n        this.win.cancelAnimationFrame(this.flushingAndroidKey);\n        this.delayedAndroidKey = null;\n        this.flushingAndroidKey = -1;\n    }\n    flushSoon() {\n        if (this.delayedFlush < 0)\n            this.delayedFlush = this.view.win.requestAnimationFrame(() => { this.delayedFlush = -1; this.flush(); });\n    }\n    forceFlush() {\n        if (this.delayedFlush >= 0) {\n            this.view.win.cancelAnimationFrame(this.delayedFlush);\n            this.delayedFlush = -1;\n        }\n        this.flush();\n    }\n    pendingRecords() {\n        for (let mut of this.observer.takeRecords())\n            this.queue.push(mut);\n        return this.queue;\n    }\n    processRecords() {\n        let records = this.pendingRecords();\n        if (records.length)\n            this.queue = [];\n        let from = -1, to = -1, typeOver = false;\n        for (let record of records) {\n            let range = this.readMutation(record);\n            if (!range)\n                continue;\n            if (range.typeOver)\n                typeOver = true;\n            if (from == -1) {\n                ({ from, to } = range);\n            }\n            else {\n                from = Math.min(range.from, from);\n                to = Math.max(range.to, to);\n            }\n        }\n        return { from, to, typeOver };\n    }\n    readChange() {\n        let { from, to, typeOver } = this.processRecords();\n        let newSel = this.selectionChanged && hasSelection(this.dom, this.selectionRange);\n        if (from < 0 && !newSel)\n            return null;\n        if (from > -1)\n            this.lastChange = Date.now();\n        this.view.inputState.lastFocusTime = 0;\n        this.selectionChanged = false;\n        let change = new DOMChange(this.view, from, to, typeOver);\n        this.view.docView.domChanged = { newSel: change.newSel ? change.newSel.main : null };\n        return change;\n    }\n    // Apply pending changes, if any\n    flush(readSelection = true) {\n        // Completely hold off flushing when pending keys are set—the code\n        // managing those will make sure processRecords is called and the\n        // view is resynchronized after\n        if (this.delayedFlush >= 0 || this.delayedAndroidKey)\n            return false;\n        if (readSelection)\n            this.readSelectionRange();\n        let domChange = this.readChange();\n        if (!domChange) {\n            this.view.requestMeasure();\n            return false;\n        }\n        let startState = this.view.state;\n        let handled = applyDOMChange(this.view, domChange);\n        // The view wasn't updated but DOM/selection changes were seen. Reset the view.\n        if (this.view.state == startState &&\n            (domChange.domChanged || domChange.newSel && !domChange.newSel.main.eq(this.view.state.selection.main)))\n            this.view.update([]);\n        return handled;\n    }\n    readMutation(rec) {\n        let cView = this.view.docView.nearest(rec.target);\n        if (!cView || cView.ignoreMutation(rec))\n            return null;\n        cView.markDirty(rec.type == \"attributes\");\n        if (rec.type == \"attributes\")\n            cView.flags |= 4 /* ViewFlag.AttrsDirty */;\n        if (rec.type == \"childList\") {\n            let childBefore = findChild(cView, rec.previousSibling || rec.target.previousSibling, -1);\n            let childAfter = findChild(cView, rec.nextSibling || rec.target.nextSibling, 1);\n            return { from: childBefore ? cView.posAfter(childBefore) : cView.posAtStart,\n                to: childAfter ? cView.posBefore(childAfter) : cView.posAtEnd, typeOver: false };\n        }\n        else if (rec.type == \"characterData\") {\n            return { from: cView.posAtStart, to: cView.posAtEnd, typeOver: rec.target.nodeValue == rec.oldValue };\n        }\n        else {\n            return null;\n        }\n    }\n    setWindow(win) {\n        if (win != this.win) {\n            this.removeWindowListeners(this.win);\n            this.win = win;\n            this.addWindowListeners(this.win);\n        }\n    }\n    addWindowListeners(win) {\n        win.addEventListener(\"resize\", this.onResize);\n        if (this.printQuery) {\n            if (this.printQuery.addEventListener)\n                this.printQuery.addEventListener(\"change\", this.onPrint);\n            else\n                this.printQuery.addListener(this.onPrint);\n        }\n        else\n            win.addEventListener(\"beforeprint\", this.onPrint);\n        win.addEventListener(\"scroll\", this.onScroll);\n        win.document.addEventListener(\"selectionchange\", this.onSelectionChange);\n    }\n    removeWindowListeners(win) {\n        win.removeEventListener(\"scroll\", this.onScroll);\n        win.removeEventListener(\"resize\", this.onResize);\n        if (this.printQuery) {\n            if (this.printQuery.removeEventListener)\n                this.printQuery.removeEventListener(\"change\", this.onPrint);\n            else\n                this.printQuery.removeListener(this.onPrint);\n        }\n        else\n            win.removeEventListener(\"beforeprint\", this.onPrint);\n        win.document.removeEventListener(\"selectionchange\", this.onSelectionChange);\n    }\n    update(update) {\n        if (this.editContext) {\n            this.editContext.update(update);\n            if (update.startState.facet(editable) != update.state.facet(editable))\n                update.view.contentDOM.editContext = update.state.facet(editable) ? this.editContext.editContext : null;\n        }\n    }\n    destroy() {\n        var _a, _b, _c;\n        this.stop();\n        (_a = this.intersection) === null || _a === void 0 ? void 0 : _a.disconnect();\n        (_b = this.gapIntersection) === null || _b === void 0 ? void 0 : _b.disconnect();\n        (_c = this.resizeScroll) === null || _c === void 0 ? void 0 : _c.disconnect();\n        for (let dom of this.scrollTargets)\n            dom.removeEventListener(\"scroll\", this.onScroll);\n        this.removeWindowListeners(this.win);\n        clearTimeout(this.parentCheck);\n        clearTimeout(this.resizeTimeout);\n        this.win.cancelAnimationFrame(this.delayedFlush);\n        this.win.cancelAnimationFrame(this.flushingAndroidKey);\n        if (this.editContext) {\n            this.view.contentDOM.editContext = null;\n            this.editContext.destroy();\n        }\n    }\n}\nfunction findChild(cView, dom, dir) {\n    while (dom) {\n        let curView = ContentView.get(dom);\n        if (curView && curView.parent == cView)\n            return curView;\n        let parent = dom.parentNode;\n        dom = parent != cView.dom ? parent : dir > 0 ? dom.nextSibling : dom.previousSibling;\n    }\n    return null;\n}\nfunction buildSelectionRangeFromRange(view, range) {\n    let anchorNode = range.startContainer, anchorOffset = range.startOffset;\n    let focusNode = range.endContainer, focusOffset = range.endOffset;\n    let curAnchor = view.docView.domAtPos(view.state.selection.main.anchor);\n    // Since such a range doesn't distinguish between anchor and head,\n    // use a heuristic that flips it around if its end matches the\n    // current anchor.\n    if (isEquivalentPosition(curAnchor.node, curAnchor.offset, focusNode, focusOffset))\n        [anchorNode, anchorOffset, focusNode, focusOffset] = [focusNode, focusOffset, anchorNode, anchorOffset];\n    return { anchorNode, anchorOffset, focusNode, focusOffset };\n}\n// Used to work around a Safari Selection/shadow DOM bug (#414)\nfunction safariSelectionRangeHack(view, selection) {\n    if (selection.getComposedRanges) {\n        let range = selection.getComposedRanges(view.root)[0];\n        if (range)\n            return buildSelectionRangeFromRange(view, range);\n    }\n    let found = null;\n    // Because Safari (at least in 2018-2021) doesn't provide regular\n    // access to the selection inside a shadowroot, we have to perform a\n    // ridiculous hack to get at it—using `execCommand` to trigger a\n    // `beforeInput` event so that we can read the target range from the\n    // event.\n    function read(event) {\n        event.preventDefault();\n        event.stopImmediatePropagation();\n        found = event.getTargetRanges()[0];\n    }\n    view.contentDOM.addEventListener(\"beforeinput\", read, true);\n    view.dom.ownerDocument.execCommand(\"indent\");\n    view.contentDOM.removeEventListener(\"beforeinput\", read, true);\n    return found ? buildSelectionRangeFromRange(view, found) : null;\n}\nclass EditContextManager {\n    constructor(view) {\n        // The document window for which the text in the context is\n        // maintained. For large documents, this may be smaller than the\n        // editor document. This window always includes the selection head.\n        this.from = 0;\n        this.to = 0;\n        // When applying a transaction, this is used to compare the change\n        // made to the context content to the change in the transaction in\n        // order to make the minimal changes to the context (since touching\n        // that sometimes breaks series of multiple edits made for a single\n        // user action on some Android keyboards)\n        this.pendingContextChange = null;\n        this.handlers = Object.create(null);\n        // Kludge to work around the fact that EditContext does not respond\n        // well to having its content updated during a composition (see #1472)\n        this.composing = null;\n        this.resetRange(view.state);\n        let context = this.editContext = new window.EditContext({\n            text: view.state.doc.sliceString(this.from, this.to),\n            selectionStart: this.toContextPos(Math.max(this.from, Math.min(this.to, view.state.selection.main.anchor))),\n            selectionEnd: this.toContextPos(view.state.selection.main.head)\n        });\n        this.handlers.textupdate = e => {\n            let { anchor } = view.state.selection.main;\n            let from = this.toEditorPos(e.updateRangeStart), to = this.toEditorPos(e.updateRangeEnd);\n            if (view.inputState.composing >= 0 && !this.composing)\n                this.composing = { contextBase: e.updateRangeStart, editorBase: from, drifted: false };\n            let change = { from, to, insert: Text.of(e.text.split(\"\\n\")) };\n            // If the window doesn't include the anchor, assume changes\n            // adjacent to a side go up to the anchor.\n            if (change.from == this.from && anchor < this.from)\n                change.from = anchor;\n            else if (change.to == this.to && anchor > this.to)\n                change.to = anchor;\n            // Edit contexts sometimes fire empty changes\n            if (change.from == change.to && !change.insert.length)\n                return;\n            this.pendingContextChange = change;\n            if (!view.state.readOnly)\n                applyDOMChangeInner(view, change, EditorSelection.single(this.toEditorPos(e.selectionStart), this.toEditorPos(e.selectionEnd)));\n            // If the transaction didn't flush our change, revert it so\n            // that the context is in sync with the editor state again.\n            if (this.pendingContextChange) {\n                this.revertPending(view.state);\n                this.setSelection(view.state);\n            }\n        };\n        this.handlers.characterboundsupdate = e => {\n            let rects = [], prev = null;\n            for (let i = this.toEditorPos(e.rangeStart), end = this.toEditorPos(e.rangeEnd); i < end; i++) {\n                let rect = view.coordsForChar(i);\n                prev = (rect && new DOMRect(rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top))\n                    || prev || new DOMRect;\n                rects.push(prev);\n            }\n            context.updateCharacterBounds(e.rangeStart, rects);\n        };\n        this.handlers.textformatupdate = e => {\n            let deco = [];\n            for (let format of e.getTextFormats()) {\n                let lineStyle = format.underlineStyle, thickness = format.underlineThickness;\n                if (lineStyle != \"None\" && thickness != \"None\") {\n                    let style = `text-decoration: underline ${lineStyle == \"Dashed\" ? \"dashed \" : lineStyle == \"Squiggle\" ? \"wavy \" : \"\"}${thickness == \"Thin\" ? 1 : 2}px`;\n                    deco.push(Decoration.mark({ attributes: { style } })\n                        .range(this.toEditorPos(format.rangeStart), this.toEditorPos(format.rangeEnd)));\n                }\n            }\n            view.dispatch({ effects: setEditContextFormatting.of(Decoration.set(deco)) });\n        };\n        this.handlers.compositionstart = () => {\n            if (view.inputState.composing < 0) {\n                view.inputState.composing = 0;\n                view.inputState.compositionFirstChange = true;\n            }\n        };\n        this.handlers.compositionend = () => {\n            view.inputState.composing = -1;\n            view.inputState.compositionFirstChange = null;\n            if (this.composing) {\n                let { drifted } = this.composing;\n                this.composing = null;\n                if (drifted)\n                    this.reset(view.state);\n            }\n        };\n        for (let event in this.handlers)\n            context.addEventListener(event, this.handlers[event]);\n        this.measureReq = { read: view => {\n                this.editContext.updateControlBounds(view.contentDOM.getBoundingClientRect());\n                let sel = getSelection(view.root);\n                if (sel && sel.rangeCount)\n                    this.editContext.updateSelectionBounds(sel.getRangeAt(0).getBoundingClientRect());\n            } };\n    }\n    applyEdits(update) {\n        let off = 0, abort = false, pending = this.pendingContextChange;\n        update.changes.iterChanges((fromA, toA, _fromB, _toB, insert) => {\n            if (abort)\n                return;\n            let dLen = insert.length - (toA - fromA);\n            if (pending && toA >= pending.to) {\n                if (pending.from == fromA && pending.to == toA && pending.insert.eq(insert)) {\n                    pending = this.pendingContextChange = null; // Match\n                    off += dLen;\n                    this.to += dLen;\n                    return;\n                }\n                else { // Mismatch, revert\n                    pending = null;\n                    this.revertPending(update.state);\n                }\n            }\n            fromA += off;\n            toA += off;\n            if (toA <= this.from) { // Before the window\n                this.from += dLen;\n                this.to += dLen;\n            }\n            else if (fromA < this.to) { // Overlaps with window\n                if (fromA < this.from || toA > this.to || (this.to - this.from) + insert.length > 30000 /* CxVp.MaxSize */) {\n                    abort = true;\n                    return;\n                }\n                this.editContext.updateText(this.toContextPos(fromA), this.toContextPos(toA), insert.toString());\n                this.to += dLen;\n            }\n            off += dLen;\n        });\n        if (pending && !abort)\n            this.revertPending(update.state);\n        return !abort;\n    }\n    update(update) {\n        let reverted = this.pendingContextChange;\n        if (this.composing && (this.composing.drifted || update.transactions.some(tr => !tr.isUserEvent(\"input.type\") && tr.changes.touchesRange(this.from, this.to)))) {\n            this.composing.drifted = true;\n            this.composing.editorBase = update.changes.mapPos(this.composing.editorBase);\n        }\n        else if (!this.applyEdits(update) || !this.rangeIsValid(update.state)) {\n            this.pendingContextChange = null;\n            this.reset(update.state);\n        }\n        else if (update.docChanged || update.selectionSet || reverted) {\n            this.setSelection(update.state);\n        }\n        if (update.geometryChanged || update.docChanged || update.selectionSet)\n            update.view.requestMeasure(this.measureReq);\n    }\n    resetRange(state) {\n        let { head } = state.selection.main;\n        this.from = Math.max(0, head - 10000 /* CxVp.Margin */);\n        this.to = Math.min(state.doc.length, head + 10000 /* CxVp.Margin */);\n    }\n    reset(state) {\n        this.resetRange(state);\n        this.editContext.updateText(0, this.editContext.text.length, state.doc.sliceString(this.from, this.to));\n        this.setSelection(state);\n    }\n    revertPending(state) {\n        let pending = this.pendingContextChange;\n        this.pendingContextChange = null;\n        this.editContext.updateText(this.toContextPos(pending.from), this.toContextPos(pending.from + pending.insert.length), state.doc.sliceString(pending.from, pending.to));\n    }\n    setSelection(state) {\n        let { main } = state.selection;\n        let start = this.toContextPos(Math.max(this.from, Math.min(this.to, main.anchor)));\n        let end = this.toContextPos(main.head);\n        if (this.editContext.selectionStart != start || this.editContext.selectionEnd != end)\n            this.editContext.updateSelection(start, end);\n    }\n    rangeIsValid(state) {\n        let { head } = state.selection.main;\n        return !(this.from > 0 && head - this.from < 500 /* CxVp.MinMargin */ ||\n            this.to < state.doc.length && this.to - head < 500 /* CxVp.MinMargin */ ||\n            this.to - this.from > 10000 /* CxVp.Margin */ * 3);\n    }\n    toEditorPos(contextPos) {\n        let c = this.composing;\n        return c && c.drifted ? c.editorBase + (contextPos - c.contextBase) : contextPos + this.from;\n    }\n    toContextPos(editorPos) {\n        let c = this.composing;\n        return c && c.drifted ? c.contextBase + (editorPos - c.editorBase) : editorPos - this.from;\n    }\n    destroy() {\n        for (let event in this.handlers)\n            this.editContext.removeEventListener(event, this.handlers[event]);\n    }\n}\n\n// The editor's update state machine looks something like this:\n//\n//     Idle → Updating ⇆ Idle (unchecked) → Measuring → Idle\n//                                         ↑      ↓\n//                                         Updating (measure)\n//\n// The difference between 'Idle' and 'Idle (unchecked)' lies in\n// whether a layout check has been scheduled. A regular update through\n// the `update` method updates the DOM in a write-only fashion, and\n// relies on a check (scheduled with `requestAnimationFrame`) to make\n// sure everything is where it should be and the viewport covers the\n// visible code. That check continues to measure and then optionally\n// update until it reaches a coherent state.\n/**\nAn editor view represents the editor's user interface. It holds\nthe editable DOM surface, and possibly other elements such as the\nline number gutter. It handles events and dispatches state\ntransactions for editing actions.\n*/\nclass EditorView {\n    /**\n    The current editor state.\n    */\n    get state() { return this.viewState.state; }\n    /**\n    To be able to display large documents without consuming too much\n    memory or overloading the browser, CodeMirror only draws the\n    code that is visible (plus a margin around it) to the DOM. This\n    property tells you the extent of the current drawn viewport, in\n    document positions.\n    */\n    get viewport() { return this.viewState.viewport; }\n    /**\n    When there are, for example, large collapsed ranges in the\n    viewport, its size can be a lot bigger than the actual visible\n    content. Thus, if you are doing something like styling the\n    content in the viewport, it is preferable to only do so for\n    these ranges, which are the subset of the viewport that is\n    actually drawn.\n    */\n    get visibleRanges() { return this.viewState.visibleRanges; }\n    /**\n    Returns false when the editor is entirely scrolled out of view\n    or otherwise hidden.\n    */\n    get inView() { return this.viewState.inView; }\n    /**\n    Indicates whether the user is currently composing text via\n    [IME](https://en.wikipedia.org/wiki/Input_method), and at least\n    one change has been made in the current composition.\n    */\n    get composing() { return this.inputState.composing > 0; }\n    /**\n    Indicates whether the user is currently in composing state. Note\n    that on some platforms, like Android, this will be the case a\n    lot, since just putting the cursor on a word starts a\n    composition there.\n    */\n    get compositionStarted() { return this.inputState.composing >= 0; }\n    /**\n    The document or shadow root that the view lives in.\n    */\n    get root() { return this._root; }\n    /**\n    @internal\n    */\n    get win() { return this.dom.ownerDocument.defaultView || window; }\n    /**\n    Construct a new view. You'll want to either provide a `parent`\n    option, or put `view.dom` into your document after creating a\n    view, so that the user can see the editor.\n    */\n    constructor(config = {}) {\n        var _a;\n        this.plugins = [];\n        this.pluginMap = new Map;\n        this.editorAttrs = {};\n        this.contentAttrs = {};\n        this.bidiCache = [];\n        this.destroyed = false;\n        /**\n        @internal\n        */\n        this.updateState = 2 /* UpdateState.Updating */;\n        /**\n        @internal\n        */\n        this.measureScheduled = -1;\n        /**\n        @internal\n        */\n        this.measureRequests = [];\n        this.contentDOM = document.createElement(\"div\");\n        this.scrollDOM = document.createElement(\"div\");\n        this.scrollDOM.tabIndex = -1;\n        this.scrollDOM.className = \"cm-scroller\";\n        this.scrollDOM.appendChild(this.contentDOM);\n        this.announceDOM = document.createElement(\"div\");\n        this.announceDOM.className = \"cm-announced\";\n        this.announceDOM.setAttribute(\"aria-live\", \"polite\");\n        this.dom = document.createElement(\"div\");\n        this.dom.appendChild(this.announceDOM);\n        this.dom.appendChild(this.scrollDOM);\n        if (config.parent)\n            config.parent.appendChild(this.dom);\n        let { dispatch } = config;\n        this.dispatchTransactions = config.dispatchTransactions ||\n            (dispatch && ((trs) => trs.forEach(tr => dispatch(tr, this)))) ||\n            ((trs) => this.update(trs));\n        this.dispatch = this.dispatch.bind(this);\n        this._root = (config.root || getRoot(config.parent) || document);\n        this.viewState = new ViewState(config.state || EditorState.create(config));\n        if (config.scrollTo && config.scrollTo.is(scrollIntoView))\n            this.viewState.scrollTarget = config.scrollTo.value.clip(this.viewState.state);\n        this.plugins = this.state.facet(viewPlugin).map(spec => new PluginInstance(spec));\n        for (let plugin of this.plugins)\n            plugin.update(this);\n        this.observer = new DOMObserver(this);\n        this.inputState = new InputState(this);\n        this.inputState.ensureHandlers(this.plugins);\n        this.docView = new DocView(this);\n        this.mountStyles();\n        this.updateAttrs();\n        this.updateState = 0 /* UpdateState.Idle */;\n        this.requestMeasure();\n        if ((_a = document.fonts) === null || _a === void 0 ? void 0 : _a.ready)\n            document.fonts.ready.then(() => this.requestMeasure());\n    }\n    dispatch(...input) {\n        let trs = input.length == 1 && input[0] instanceof Transaction ? input\n            : input.length == 1 && Array.isArray(input[0]) ? input[0]\n                : [this.state.update(...input)];\n        this.dispatchTransactions(trs, this);\n    }\n    /**\n    Update the view for the given array of transactions. This will\n    update the visible document and selection to match the state\n    produced by the transactions, and notify view plugins of the\n    change. You should usually call\n    [`dispatch`](https://codemirror.net/6/docs/ref/#view.EditorView.dispatch) instead, which uses this\n    as a primitive.\n    */\n    update(transactions) {\n        if (this.updateState != 0 /* UpdateState.Idle */)\n            throw new Error(\"Calls to EditorView.update are not allowed while an update is in progress\");\n        let redrawn = false, attrsChanged = false, update;\n        let state = this.state;\n        for (let tr of transactions) {\n            if (tr.startState != state)\n                throw new RangeError(\"Trying to update state with a transaction that doesn't start from the previous state.\");\n            state = tr.state;\n        }\n        if (this.destroyed) {\n            this.viewState.state = state;\n            return;\n        }\n        let focus = this.hasFocus, focusFlag = 0, dispatchFocus = null;\n        if (transactions.some(tr => tr.annotation(isFocusChange))) {\n            this.inputState.notifiedFocused = focus;\n            // If a focus-change transaction is being dispatched, set this update flag.\n            focusFlag = 1 /* UpdateFlag.Focus */;\n        }\n        else if (focus != this.inputState.notifiedFocused) {\n            this.inputState.notifiedFocused = focus;\n            // Schedule a separate focus transaction if necessary, otherwise\n            // add a flag to this update\n            dispatchFocus = focusChangeTransaction(state, focus);\n            if (!dispatchFocus)\n                focusFlag = 1 /* UpdateFlag.Focus */;\n        }\n        // If there was a pending DOM change, eagerly read it and try to\n        // apply it after the given transactions.\n        let pendingKey = this.observer.delayedAndroidKey, domChange = null;\n        if (pendingKey) {\n            this.observer.clearDelayedAndroidKey();\n            domChange = this.observer.readChange();\n            // Only try to apply DOM changes if the transactions didn't\n            // change the doc or selection.\n            if (domChange && !this.state.doc.eq(state.doc) || !this.state.selection.eq(state.selection))\n                domChange = null;\n        }\n        else {\n            this.observer.clear();\n        }\n        // When the phrases change, redraw the editor\n        if (state.facet(EditorState.phrases) != this.state.facet(EditorState.phrases))\n            return this.setState(state);\n        update = ViewUpdate.create(this, state, transactions);\n        update.flags |= focusFlag;\n        let scrollTarget = this.viewState.scrollTarget;\n        try {\n            this.updateState = 2 /* UpdateState.Updating */;\n            for (let tr of transactions) {\n                if (scrollTarget)\n                    scrollTarget = scrollTarget.map(tr.changes);\n                if (tr.scrollIntoView) {\n                    let { main } = tr.state.selection;\n                    scrollTarget = new ScrollTarget(main.empty ? main : EditorSelection.cursor(main.head, main.head > main.anchor ? -1 : 1));\n                }\n                for (let e of tr.effects)\n                    if (e.is(scrollIntoView))\n                        scrollTarget = e.value.clip(this.state);\n            }\n            this.viewState.update(update, scrollTarget);\n            this.bidiCache = CachedOrder.update(this.bidiCache, update.changes);\n            if (!update.empty) {\n                this.updatePlugins(update);\n                this.inputState.update(update);\n            }\n            redrawn = this.docView.update(update);\n            if (this.state.facet(styleModule) != this.styleModules)\n                this.mountStyles();\n            attrsChanged = this.updateAttrs();\n            this.showAnnouncements(transactions);\n            this.docView.updateSelection(redrawn, transactions.some(tr => tr.isUserEvent(\"select.pointer\")));\n        }\n        finally {\n            this.updateState = 0 /* UpdateState.Idle */;\n        }\n        if (update.startState.facet(theme) != update.state.facet(theme))\n            this.viewState.mustMeasureContent = true;\n        if (redrawn || attrsChanged || scrollTarget || this.viewState.mustEnforceCursorAssoc || this.viewState.mustMeasureContent)\n            this.requestMeasure();\n        if (redrawn)\n            this.docViewUpdate();\n        if (!update.empty)\n            for (let listener of this.state.facet(updateListener)) {\n                try {\n                    listener(update);\n                }\n                catch (e) {\n                    logException(this.state, e, \"update listener\");\n                }\n            }\n        if (dispatchFocus || domChange)\n            Promise.resolve().then(() => {\n                if (dispatchFocus && this.state == dispatchFocus.startState)\n                    this.dispatch(dispatchFocus);\n                if (domChange) {\n                    if (!applyDOMChange(this, domChange) && pendingKey.force)\n                        dispatchKey(this.contentDOM, pendingKey.key, pendingKey.keyCode);\n                }\n            });\n    }\n    /**\n    Reset the view to the given state. (This will cause the entire\n    document to be redrawn and all view plugins to be reinitialized,\n    so you should probably only use it when the new state isn't\n    derived from the old state. Otherwise, use\n    [`dispatch`](https://codemirror.net/6/docs/ref/#view.EditorView.dispatch) instead.)\n    */\n    setState(newState) {\n        if (this.updateState != 0 /* UpdateState.Idle */)\n            throw new Error(\"Calls to EditorView.setState are not allowed while an update is in progress\");\n        if (this.destroyed) {\n            this.viewState.state = newState;\n            return;\n        }\n        this.updateState = 2 /* UpdateState.Updating */;\n        let hadFocus = this.hasFocus;\n        try {\n            for (let plugin of this.plugins)\n                plugin.destroy(this);\n            this.viewState = new ViewState(newState);\n            this.plugins = newState.facet(viewPlugin).map(spec => new PluginInstance(spec));\n            this.pluginMap.clear();\n            for (let plugin of this.plugins)\n                plugin.update(this);\n            this.docView.destroy();\n            this.docView = new DocView(this);\n            this.inputState.ensureHandlers(this.plugins);\n            this.mountStyles();\n            this.updateAttrs();\n            this.bidiCache = [];\n        }\n        finally {\n            this.updateState = 0 /* UpdateState.Idle */;\n        }\n        if (hadFocus)\n            this.focus();\n        this.requestMeasure();\n    }\n    updatePlugins(update) {\n        let prevSpecs = update.startState.facet(viewPlugin), specs = update.state.facet(viewPlugin);\n        if (prevSpecs != specs) {\n            let newPlugins = [];\n            for (let spec of specs) {\n                let found = prevSpecs.indexOf(spec);\n                if (found < 0) {\n                    newPlugins.push(new PluginInstance(spec));\n                }\n                else {\n                    let plugin = this.plugins[found];\n                    plugin.mustUpdate = update;\n                    newPlugins.push(plugin);\n                }\n            }\n            for (let plugin of this.plugins)\n                if (plugin.mustUpdate != update)\n                    plugin.destroy(this);\n            this.plugins = newPlugins;\n            this.pluginMap.clear();\n        }\n        else {\n            for (let p of this.plugins)\n                p.mustUpdate = update;\n        }\n        for (let i = 0; i < this.plugins.length; i++)\n            this.plugins[i].update(this);\n        if (prevSpecs != specs)\n            this.inputState.ensureHandlers(this.plugins);\n    }\n    docViewUpdate() {\n        for (let plugin of this.plugins) {\n            let val = plugin.value;\n            if (val && val.docViewUpdate) {\n                try {\n                    val.docViewUpdate(this);\n                }\n                catch (e) {\n                    logException(this.state, e, \"doc view update listener\");\n                }\n            }\n        }\n    }\n    /**\n    @internal\n    */\n    measure(flush = true) {\n        if (this.destroyed)\n            return;\n        if (this.measureScheduled > -1)\n            this.win.cancelAnimationFrame(this.measureScheduled);\n        if (this.observer.delayedAndroidKey) {\n            this.measureScheduled = -1;\n            this.requestMeasure();\n            return;\n        }\n        this.measureScheduled = 0; // Prevent requestMeasure calls from scheduling another animation frame\n        if (flush)\n            this.observer.forceFlush();\n        let updated = null;\n        let sDOM = this.scrollDOM, scrollTop = sDOM.scrollTop * this.scaleY;\n        let { scrollAnchorPos, scrollAnchorHeight } = this.viewState;\n        if (Math.abs(scrollTop - this.viewState.scrollTop) > 1)\n            scrollAnchorHeight = -1;\n        this.viewState.scrollAnchorHeight = -1;\n        try {\n            for (let i = 0;; i++) {\n                if (scrollAnchorHeight < 0) {\n                    if (isScrolledToBottom(sDOM)) {\n                        scrollAnchorPos = -1;\n                        scrollAnchorHeight = this.viewState.heightMap.height;\n                    }\n                    else {\n                        let block = this.viewState.scrollAnchorAt(scrollTop);\n                        scrollAnchorPos = block.from;\n                        scrollAnchorHeight = block.top;\n                    }\n                }\n                this.updateState = 1 /* UpdateState.Measuring */;\n                let changed = this.viewState.measure(this);\n                if (!changed && !this.measureRequests.length && this.viewState.scrollTarget == null)\n                    break;\n                if (i > 5) {\n                    console.warn(this.measureRequests.length\n                        ? \"Measure loop restarted more than 5 times\"\n                        : \"Viewport failed to stabilize\");\n                    break;\n                }\n                let measuring = [];\n                // Only run measure requests in this cycle when the viewport didn't change\n                if (!(changed & 4 /* UpdateFlag.Viewport */))\n                    [this.measureRequests, measuring] = [measuring, this.measureRequests];\n                let measured = measuring.map(m => {\n                    try {\n                        return m.read(this);\n                    }\n                    catch (e) {\n                        logException(this.state, e);\n                        return BadMeasure;\n                    }\n                });\n                let update = ViewUpdate.create(this, this.state, []), redrawn = false;\n                update.flags |= changed;\n                if (!updated)\n                    updated = update;\n                else\n                    updated.flags |= changed;\n                this.updateState = 2 /* UpdateState.Updating */;\n                if (!update.empty) {\n                    this.updatePlugins(update);\n                    this.inputState.update(update);\n                    this.updateAttrs();\n                    redrawn = this.docView.update(update);\n                    if (redrawn)\n                        this.docViewUpdate();\n                }\n                for (let i = 0; i < measuring.length; i++)\n                    if (measured[i] != BadMeasure) {\n                        try {\n                            let m = measuring[i];\n                            if (m.write)\n                                m.write(measured[i], this);\n                        }\n                        catch (e) {\n                            logException(this.state, e);\n                        }\n                    }\n                if (redrawn)\n                    this.docView.updateSelection(true);\n                if (!update.viewportChanged && this.measureRequests.length == 0) {\n                    if (this.viewState.editorHeight) {\n                        if (this.viewState.scrollTarget) {\n                            this.docView.scrollIntoView(this.viewState.scrollTarget);\n                            this.viewState.scrollTarget = null;\n                            scrollAnchorHeight = -1;\n                            continue;\n                        }\n                        else {\n                            let newAnchorHeight = scrollAnchorPos < 0 ? this.viewState.heightMap.height :\n                                this.viewState.lineBlockAt(scrollAnchorPos).top;\n                            let diff = newAnchorHeight - scrollAnchorHeight;\n                            if (diff > 1 || diff < -1) {\n                                scrollTop = scrollTop + diff;\n                                sDOM.scrollTop = scrollTop / this.scaleY;\n                                scrollAnchorHeight = -1;\n                                continue;\n                            }\n                        }\n                    }\n                    break;\n                }\n            }\n        }\n        finally {\n            this.updateState = 0 /* UpdateState.Idle */;\n            this.measureScheduled = -1;\n        }\n        if (updated && !updated.empty)\n            for (let listener of this.state.facet(updateListener))\n                listener(updated);\n    }\n    /**\n    Get the CSS classes for the currently active editor themes.\n    */\n    get themeClasses() {\n        return baseThemeID + \" \" +\n            (this.state.facet(darkTheme) ? baseDarkID : baseLightID) + \" \" +\n            this.state.facet(theme);\n    }\n    updateAttrs() {\n        let editorAttrs = attrsFromFacet(this, editorAttributes, {\n            class: \"cm-editor\" + (this.hasFocus ? \" cm-focused \" : \" \") + this.themeClasses\n        });\n        let contentAttrs = {\n            spellcheck: \"false\",\n            autocorrect: \"off\",\n            autocapitalize: \"off\",\n            translate: \"no\",\n            contenteditable: !this.state.facet(editable) ? \"false\" : \"true\",\n            class: \"cm-content\",\n            style: `${browser.tabSize}: ${this.state.tabSize}`,\n            role: \"textbox\",\n            \"aria-multiline\": \"true\"\n        };\n        if (this.state.readOnly)\n            contentAttrs[\"aria-readonly\"] = \"true\";\n        attrsFromFacet(this, contentAttributes, contentAttrs);\n        let changed = this.observer.ignore(() => {\n            let changedContent = updateAttrs(this.contentDOM, this.contentAttrs, contentAttrs);\n            let changedEditor = updateAttrs(this.dom, this.editorAttrs, editorAttrs);\n            return changedContent || changedEditor;\n        });\n        this.editorAttrs = editorAttrs;\n        this.contentAttrs = contentAttrs;\n        return changed;\n    }\n    showAnnouncements(trs) {\n        let first = true;\n        for (let tr of trs)\n            for (let effect of tr.effects)\n                if (effect.is(EditorView.announce)) {\n                    if (first)\n                        this.announceDOM.textContent = \"\";\n                    first = false;\n                    let div = this.announceDOM.appendChild(document.createElement(\"div\"));\n                    div.textContent = effect.value;\n                }\n    }\n    mountStyles() {\n        this.styleModules = this.state.facet(styleModule);\n        let nonce = this.state.facet(EditorView.cspNonce);\n        StyleModule.mount(this.root, this.styleModules.concat(baseTheme$1).reverse(), nonce ? { nonce } : undefined);\n    }\n    readMeasured() {\n        if (this.updateState == 2 /* UpdateState.Updating */)\n            throw new Error(\"Reading the editor layout isn't allowed during an update\");\n        if (this.updateState == 0 /* UpdateState.Idle */ && this.measureScheduled > -1)\n            this.measure(false);\n    }\n    /**\n    Schedule a layout measurement, optionally providing callbacks to\n    do custom DOM measuring followed by a DOM write phase. Using\n    this is preferable reading DOM layout directly from, for\n    example, an event handler, because it'll make sure measuring and\n    drawing done by other components is synchronized, avoiding\n    unnecessary DOM layout computations.\n    */\n    requestMeasure(request) {\n        if (this.measureScheduled < 0)\n            this.measureScheduled = this.win.requestAnimationFrame(() => this.measure());\n        if (request) {\n            if (this.measureRequests.indexOf(request) > -1)\n                return;\n            if (request.key != null)\n                for (let i = 0; i < this.measureRequests.length; i++) {\n                    if (this.measureRequests[i].key === request.key) {\n                        this.measureRequests[i] = request;\n                        return;\n                    }\n                }\n            this.measureRequests.push(request);\n        }\n    }\n    /**\n    Get the value of a specific plugin, if present. Note that\n    plugins that crash can be dropped from a view, so even when you\n    know you registered a given plugin, it is recommended to check\n    the return value of this method.\n    */\n    plugin(plugin) {\n        let known = this.pluginMap.get(plugin);\n        if (known === undefined || known && known.spec != plugin)\n            this.pluginMap.set(plugin, known = this.plugins.find(p => p.spec == plugin) || null);\n        return known && known.update(this).value;\n    }\n    /**\n    The top position of the document, in screen coordinates. This\n    may be negative when the editor is scrolled down. Points\n    directly to the top of the first line, not above the padding.\n    */\n    get documentTop() {\n        return this.contentDOM.getBoundingClientRect().top + this.viewState.paddingTop;\n    }\n    /**\n    Reports the padding above and below the document.\n    */\n    get documentPadding() {\n        return { top: this.viewState.paddingTop, bottom: this.viewState.paddingBottom };\n    }\n    /**\n    If the editor is transformed with CSS, this provides the scale\n    along the X axis. Otherwise, it will just be 1. Note that\n    transforms other than translation and scaling are not supported.\n    */\n    get scaleX() { return this.viewState.scaleX; }\n    /**\n    Provide the CSS transformed scale along the Y axis.\n    */\n    get scaleY() { return this.viewState.scaleY; }\n    /**\n    Find the text line or block widget at the given vertical\n    position (which is interpreted as relative to the [top of the\n    document](https://codemirror.net/6/docs/ref/#view.EditorView.documentTop)).\n    */\n    elementAtHeight(height) {\n        this.readMeasured();\n        return this.viewState.elementAtHeight(height);\n    }\n    /**\n    Find the line block (see\n    [`lineBlockAt`](https://codemirror.net/6/docs/ref/#view.EditorView.lineBlockAt) at the given\n    height, again interpreted relative to the [top of the\n    document](https://codemirror.net/6/docs/ref/#view.EditorView.documentTop).\n    */\n    lineBlockAtHeight(height) {\n        this.readMeasured();\n        return this.viewState.lineBlockAtHeight(height);\n    }\n    /**\n    Get the extent and vertical position of all [line\n    blocks](https://codemirror.net/6/docs/ref/#view.EditorView.lineBlockAt) in the viewport. Positions\n    are relative to the [top of the\n    document](https://codemirror.net/6/docs/ref/#view.EditorView.documentTop);\n    */\n    get viewportLineBlocks() {\n        return this.viewState.viewportLines;\n    }\n    /**\n    Find the line block around the given document position. A line\n    block is a range delimited on both sides by either a\n    non-[hidden](https://codemirror.net/6/docs/ref/#view.Decoration^replace) line break, or the\n    start/end of the document. It will usually just hold a line of\n    text, but may be broken into multiple textblocks by block\n    widgets.\n    */\n    lineBlockAt(pos) {\n        return this.viewState.lineBlockAt(pos);\n    }\n    /**\n    The editor's total content height.\n    */\n    get contentHeight() {\n        return this.viewState.contentHeight;\n    }\n    /**\n    Move a cursor position by [grapheme\n    cluster](https://codemirror.net/6/docs/ref/#state.findClusterBreak). `forward` determines whether\n    the motion is away from the line start, or towards it. In\n    bidirectional text, the line is traversed in visual order, using\n    the editor's [text direction](https://codemirror.net/6/docs/ref/#view.EditorView.textDirection).\n    When the start position was the last one on the line, the\n    returned position will be across the line break. If there is no\n    further line, the original position is returned.\n    \n    By default, this method moves over a single cluster. The\n    optional `by` argument can be used to move across more. It will\n    be called with the first cluster as argument, and should return\n    a predicate that determines, for each subsequent cluster,\n    whether it should also be moved over.\n    */\n    moveByChar(start, forward, by) {\n        return skipAtoms(this, start, moveByChar(this, start, forward, by));\n    }\n    /**\n    Move a cursor position across the next group of either\n    [letters](https://codemirror.net/6/docs/ref/#state.EditorState.charCategorizer) or non-letter\n    non-whitespace characters.\n    */\n    moveByGroup(start, forward) {\n        return skipAtoms(this, start, moveByChar(this, start, forward, initial => byGroup(this, start.head, initial)));\n    }\n    /**\n    Get the cursor position visually at the start or end of a line.\n    Note that this may differ from the _logical_ position at its\n    start or end (which is simply at `line.from`/`line.to`) if text\n    at the start or end goes against the line's base text direction.\n    */\n    visualLineSide(line, end) {\n        let order = this.bidiSpans(line), dir = this.textDirectionAt(line.from);\n        let span = order[end ? order.length - 1 : 0];\n        return EditorSelection.cursor(span.side(end, dir) + line.from, span.forward(!end, dir) ? 1 : -1);\n    }\n    /**\n    Move to the next line boundary in the given direction. If\n    `includeWrap` is true, line wrapping is on, and there is a\n    further wrap point on the current line, the wrap point will be\n    returned. Otherwise this function will return the start or end\n    of the line.\n    */\n    moveToLineBoundary(start, forward, includeWrap = true) {\n        return moveToLineBoundary(this, start, forward, includeWrap);\n    }\n    /**\n    Move a cursor position vertically. When `distance` isn't given,\n    it defaults to moving to the next line (including wrapped\n    lines). Otherwise, `distance` should provide a positive distance\n    in pixels.\n    \n    When `start` has a\n    [`goalColumn`](https://codemirror.net/6/docs/ref/#state.SelectionRange.goalColumn), the vertical\n    motion will use that as a target horizontal position. Otherwise,\n    the cursor's own horizontal position is used. The returned\n    cursor will have its goal column set to whichever column was\n    used.\n    */\n    moveVertically(start, forward, distance) {\n        return skipAtoms(this, start, moveVertically(this, start, forward, distance));\n    }\n    /**\n    Find the DOM parent node and offset (child offset if `node` is\n    an element, character offset when it is a text node) at the\n    given document position.\n    \n    Note that for positions that aren't currently in\n    `visibleRanges`, the resulting DOM position isn't necessarily\n    meaningful (it may just point before or after a placeholder\n    element).\n    */\n    domAtPos(pos) {\n        return this.docView.domAtPos(pos);\n    }\n    /**\n    Find the document position at the given DOM node. Can be useful\n    for associating positions with DOM events. Will raise an error\n    when `node` isn't part of the editor content.\n    */\n    posAtDOM(node, offset = 0) {\n        return this.docView.posFromDOM(node, offset);\n    }\n    posAtCoords(coords, precise = true) {\n        this.readMeasured();\n        return posAtCoords(this, coords, precise);\n    }\n    /**\n    Get the screen coordinates at the given document position.\n    `side` determines whether the coordinates are based on the\n    element before (-1) or after (1) the position (if no element is\n    available on the given side, the method will transparently use\n    another strategy to get reasonable coordinates).\n    */\n    coordsAtPos(pos, side = 1) {\n        this.readMeasured();\n        let rect = this.docView.coordsAt(pos, side);\n        if (!rect || rect.left == rect.right)\n            return rect;\n        let line = this.state.doc.lineAt(pos), order = this.bidiSpans(line);\n        let span = order[BidiSpan.find(order, pos - line.from, -1, side)];\n        return flattenRect(rect, (span.dir == Direction.LTR) == (side > 0));\n    }\n    /**\n    Return the rectangle around a given character. If `pos` does not\n    point in front of a character that is in the viewport and\n    rendered (i.e. not replaced, not a line break), this will return\n    null. For space characters that are a line wrap point, this will\n    return the position before the line break.\n    */\n    coordsForChar(pos) {\n        this.readMeasured();\n        return this.docView.coordsForChar(pos);\n    }\n    /**\n    The default width of a character in the editor. May not\n    accurately reflect the width of all characters (given variable\n    width fonts or styling of invididual ranges).\n    */\n    get defaultCharacterWidth() { return this.viewState.heightOracle.charWidth; }\n    /**\n    The default height of a line in the editor. May not be accurate\n    for all lines.\n    */\n    get defaultLineHeight() { return this.viewState.heightOracle.lineHeight; }\n    /**\n    The text direction\n    ([`direction`](https://developer.mozilla.org/en-US/docs/Web/CSS/direction)\n    CSS property) of the editor's content element.\n    */\n    get textDirection() { return this.viewState.defaultTextDirection; }\n    /**\n    Find the text direction of the block at the given position, as\n    assigned by CSS. If\n    [`perLineTextDirection`](https://codemirror.net/6/docs/ref/#view.EditorView^perLineTextDirection)\n    isn't enabled, or the given position is outside of the viewport,\n    this will always return the same as\n    [`textDirection`](https://codemirror.net/6/docs/ref/#view.EditorView.textDirection). Note that\n    this may trigger a DOM layout.\n    */\n    textDirectionAt(pos) {\n        let perLine = this.state.facet(perLineTextDirection);\n        if (!perLine || pos < this.viewport.from || pos > this.viewport.to)\n            return this.textDirection;\n        this.readMeasured();\n        return this.docView.textDirectionAt(pos);\n    }\n    /**\n    Whether this editor [wraps lines](https://codemirror.net/6/docs/ref/#view.EditorView.lineWrapping)\n    (as determined by the\n    [`white-space`](https://developer.mozilla.org/en-US/docs/Web/CSS/white-space)\n    CSS property of its content element).\n    */\n    get lineWrapping() { return this.viewState.heightOracle.lineWrapping; }\n    /**\n    Returns the bidirectional text structure of the given line\n    (which should be in the current document) as an array of span\n    objects. The order of these spans matches the [text\n    direction](https://codemirror.net/6/docs/ref/#view.EditorView.textDirection)—if that is\n    left-to-right, the leftmost spans come first, otherwise the\n    rightmost spans come first.\n    */\n    bidiSpans(line) {\n        if (line.length > MaxBidiLine)\n            return trivialOrder(line.length);\n        let dir = this.textDirectionAt(line.from), isolates;\n        for (let entry of this.bidiCache) {\n            if (entry.from == line.from && entry.dir == dir &&\n                (entry.fresh || isolatesEq(entry.isolates, isolates = getIsolatedRanges(this, line))))\n                return entry.order;\n        }\n        if (!isolates)\n            isolates = getIsolatedRanges(this, line);\n        let order = computeOrder(line.text, dir, isolates);\n        this.bidiCache.push(new CachedOrder(line.from, line.to, dir, isolates, true, order));\n        return order;\n    }\n    /**\n    Check whether the editor has focus.\n    */\n    get hasFocus() {\n        var _a;\n        // Safari return false for hasFocus when the context menu is open\n        // or closing, which leads us to ignore selection changes from the\n        // context menu because it looks like the editor isn't focused.\n        // This kludges around that.\n        return (this.dom.ownerDocument.hasFocus() || browser.safari && ((_a = this.inputState) === null || _a === void 0 ? void 0 : _a.lastContextMenu) > Date.now() - 3e4) &&\n            this.root.activeElement == this.contentDOM;\n    }\n    /**\n    Put focus on the editor.\n    */\n    focus() {\n        this.observer.ignore(() => {\n            focusPreventScroll(this.contentDOM);\n            this.docView.updateSelection();\n        });\n    }\n    /**\n    Update the [root](https://codemirror.net/6/docs/ref/##view.EditorViewConfig.root) in which the editor lives. This is only\n    necessary when moving the editor's existing DOM to a new window or shadow root.\n    */\n    setRoot(root) {\n        if (this._root != root) {\n            this._root = root;\n            this.observer.setWindow((root.nodeType == 9 ? root : root.ownerDocument).defaultView || window);\n            this.mountStyles();\n        }\n    }\n    /**\n    Clean up this editor view, removing its element from the\n    document, unregistering event handlers, and notifying\n    plugins. The view instance can no longer be used after\n    calling this.\n    */\n    destroy() {\n        if (this.root.activeElement == this.contentDOM)\n            this.contentDOM.blur();\n        for (let plugin of this.plugins)\n            plugin.destroy(this);\n        this.plugins = [];\n        this.inputState.destroy();\n        this.docView.destroy();\n        this.dom.remove();\n        this.observer.destroy();\n        if (this.measureScheduled > -1)\n            this.win.cancelAnimationFrame(this.measureScheduled);\n        this.destroyed = true;\n    }\n    /**\n    Returns an effect that can be\n    [added](https://codemirror.net/6/docs/ref/#state.TransactionSpec.effects) to a transaction to\n    cause it to scroll the given position or range into view.\n    */\n    static scrollIntoView(pos, options = {}) {\n        return scrollIntoView.of(new ScrollTarget(typeof pos == \"number\" ? EditorSelection.cursor(pos) : pos, options.y, options.x, options.yMargin, options.xMargin));\n    }\n    /**\n    Return an effect that resets the editor to its current (at the\n    time this method was called) scroll position. Note that this\n    only affects the editor's own scrollable element, not parents.\n    See also\n    [`EditorViewConfig.scrollTo`](https://codemirror.net/6/docs/ref/#view.EditorViewConfig.scrollTo).\n    \n    The effect should be used with a document identical to the one\n    it was created for. Failing to do so is not an error, but may\n    not scroll to the expected position. You can\n    [map](https://codemirror.net/6/docs/ref/#state.StateEffect.map) the effect to account for changes.\n    */\n    scrollSnapshot() {\n        let { scrollTop, scrollLeft } = this.scrollDOM;\n        let ref = this.viewState.scrollAnchorAt(scrollTop);\n        return scrollIntoView.of(new ScrollTarget(EditorSelection.cursor(ref.from), \"start\", \"start\", ref.top - scrollTop, scrollLeft, true));\n    }\n    /**\n    Enable or disable tab-focus mode, which disables key bindings\n    for Tab and Shift-Tab, letting the browser's default\n    focus-changing behavior go through instead. This is useful to\n    prevent trapping keyboard users in your editor.\n    \n    Without argument, this toggles the mode. With a boolean, it\n    enables (true) or disables it (false). Given a number, it\n    temporarily enables the mode until that number of milliseconds\n    have passed or another non-Tab key is pressed.\n    */\n    setTabFocusMode(to) {\n        if (to == null)\n            this.inputState.tabFocusMode = this.inputState.tabFocusMode < 0 ? 0 : -1;\n        else if (typeof to == \"boolean\")\n            this.inputState.tabFocusMode = to ? 0 : -1;\n        else if (this.inputState.tabFocusMode != 0)\n            this.inputState.tabFocusMode = Date.now() + to;\n    }\n    /**\n    Returns an extension that can be used to add DOM event handlers.\n    The value should be an object mapping event names to handler\n    functions. For any given event, such functions are ordered by\n    extension precedence, and the first handler to return true will\n    be assumed to have handled that event, and no other handlers or\n    built-in behavior will be activated for it. These are registered\n    on the [content element](https://codemirror.net/6/docs/ref/#view.EditorView.contentDOM), except\n    for `scroll` handlers, which will be called any time the\n    editor's [scroll element](https://codemirror.net/6/docs/ref/#view.EditorView.scrollDOM) or one of\n    its parent nodes is scrolled.\n    */\n    static domEventHandlers(handlers) {\n        return ViewPlugin.define(() => ({}), { eventHandlers: handlers });\n    }\n    /**\n    Create an extension that registers DOM event observers. Contrary\n    to event [handlers](https://codemirror.net/6/docs/ref/#view.EditorView^domEventHandlers),\n    observers can't be prevented from running by a higher-precedence\n    handler returning true. They also don't prevent other handlers\n    and observers from running when they return true, and should not\n    call `preventDefault`.\n    */\n    static domEventObservers(observers) {\n        return ViewPlugin.define(() => ({}), { eventObservers: observers });\n    }\n    /**\n    Create a theme extension. The first argument can be a\n    [`style-mod`](https://github.com/marijnh/style-mod#documentation)\n    style spec providing the styles for the theme. These will be\n    prefixed with a generated class for the style.\n    \n    Because the selectors will be prefixed with a scope class, rule\n    that directly match the editor's [wrapper\n    element](https://codemirror.net/6/docs/ref/#view.EditorView.dom)—to which the scope class will be\n    added—need to be explicitly differentiated by adding an `&` to\n    the selector for that element—for example\n    `&.cm-focused`.\n    \n    When `dark` is set to true, the theme will be marked as dark,\n    which will cause the `&dark` rules from [base\n    themes](https://codemirror.net/6/docs/ref/#view.EditorView^baseTheme) to be used (as opposed to\n    `&light` when a light theme is active).\n    */\n    static theme(spec, options) {\n        let prefix = StyleModule.newName();\n        let result = [theme.of(prefix), styleModule.of(buildTheme(`.${prefix}`, spec))];\n        if (options && options.dark)\n            result.push(darkTheme.of(true));\n        return result;\n    }\n    /**\n    Create an extension that adds styles to the base theme. Like\n    with [`theme`](https://codemirror.net/6/docs/ref/#view.EditorView^theme), use `&` to indicate the\n    place of the editor wrapper element when directly targeting\n    that. You can also use `&dark` or `&light` instead to only\n    target editors with a dark or light theme.\n    */\n    static baseTheme(spec) {\n        return Prec.lowest(styleModule.of(buildTheme(\".\" + baseThemeID, spec, lightDarkIDs)));\n    }\n    /**\n    Retrieve an editor view instance from the view's DOM\n    representation.\n    */\n    static findFromDOM(dom) {\n        var _a;\n        let content = dom.querySelector(\".cm-content\");\n        let cView = content && ContentView.get(content) || ContentView.get(dom);\n        return ((_a = cView === null || cView === void 0 ? void 0 : cView.rootView) === null || _a === void 0 ? void 0 : _a.view) || null;\n    }\n}\n/**\nFacet to add a [style\nmodule](https://github.com/marijnh/style-mod#documentation) to\nan editor view. The view will ensure that the module is\nmounted in its [document\nroot](https://codemirror.net/6/docs/ref/#view.EditorView.constructor^config.root).\n*/\nEditorView.styleModule = styleModule;\n/**\nAn input handler can override the way changes to the editable\nDOM content are handled. Handlers are passed the document\npositions between which the change was found, and the new\ncontent. When one returns true, no further input handlers are\ncalled and the default behavior is prevented.\n\nThe `insert` argument can be used to get the default transaction\nthat would be applied for this input. This can be useful when\ndispatching the custom behavior as a separate transaction.\n*/\nEditorView.inputHandler = inputHandler;\n/**\nFunctions provided in this facet will be used to transform text\npasted or dropped into the editor.\n*/\nEditorView.clipboardInputFilter = clipboardInputFilter;\n/**\nTransform text copied or dragged from the editor.\n*/\nEditorView.clipboardOutputFilter = clipboardOutputFilter;\n/**\nScroll handlers can override how things are scrolled into view.\nIf they return `true`, no further handling happens for the\nscrolling. If they return false, the default scroll behavior is\napplied. Scroll handlers should never initiate editor updates.\n*/\nEditorView.scrollHandler = scrollHandler;\n/**\nThis facet can be used to provide functions that create effects\nto be dispatched when the editor's focus state changes.\n*/\nEditorView.focusChangeEffect = focusChangeEffect;\n/**\nBy default, the editor assumes all its content has the same\n[text direction](https://codemirror.net/6/docs/ref/#view.Direction). Configure this with a `true`\nvalue to make it read the text direction of every (rendered)\nline separately.\n*/\nEditorView.perLineTextDirection = perLineTextDirection;\n/**\nAllows you to provide a function that should be called when the\nlibrary catches an exception from an extension (mostly from view\nplugins, but may be used by other extensions to route exceptions\nfrom user-code-provided callbacks). This is mostly useful for\ndebugging and logging. See [`logException`](https://codemirror.net/6/docs/ref/#view.logException).\n*/\nEditorView.exceptionSink = exceptionSink;\n/**\nA facet that can be used to register a function to be called\nevery time the view updates.\n*/\nEditorView.updateListener = updateListener;\n/**\nFacet that controls whether the editor content DOM is editable.\nWhen its highest-precedence value is `false`, the element will\nnot have its `contenteditable` attribute set. (Note that this\ndoesn't affect API calls that change the editor content, even\nwhen those are bound to keys or buttons. See the\n[`readOnly`](https://codemirror.net/6/docs/ref/#state.EditorState.readOnly) facet for that.)\n*/\nEditorView.editable = editable;\n/**\nAllows you to influence the way mouse selection happens. The\nfunctions in this facet will be called for a `mousedown` event\non the editor, and can return an object that overrides the way a\nselection is computed from that mouse click or drag.\n*/\nEditorView.mouseSelectionStyle = mouseSelectionStyle;\n/**\nFacet used to configure whether a given selection drag event\nshould move or copy the selection. The given predicate will be\ncalled with the `mousedown` event, and can return `true` when\nthe drag should move the content.\n*/\nEditorView.dragMovesSelection = dragMovesSelection$1;\n/**\nFacet used to configure whether a given selecting click adds a\nnew range to the existing selection or replaces it entirely. The\ndefault behavior is to check `event.metaKey` on macOS, and\n`event.ctrlKey` elsewhere.\n*/\nEditorView.clickAddsSelectionRange = clickAddsSelectionRange;\n/**\nA facet that determines which [decorations](https://codemirror.net/6/docs/ref/#view.Decoration)\nare shown in the view. Decorations can be provided in two\nways—directly, or via a function that takes an editor view.\n\nOnly decoration sets provided directly are allowed to influence\nthe editor's vertical layout structure. The ones provided as\nfunctions are called _after_ the new viewport has been computed,\nand thus **must not** introduce block widgets or replacing\ndecorations that cover line breaks.\n\nIf you want decorated ranges to behave like atomic units for\ncursor motion and deletion purposes, also provide the range set\ncontaining the decorations to\n[`EditorView.atomicRanges`](https://codemirror.net/6/docs/ref/#view.EditorView^atomicRanges).\n*/\nEditorView.decorations = decorations;\n/**\nFacet that works much like\n[`decorations`](https://codemirror.net/6/docs/ref/#view.EditorView^decorations), but puts its\ninputs at the very bottom of the precedence stack, meaning mark\ndecorations provided here will only be split by other, partially\noverlapping \\`outerDecorations\\` ranges, and wrap around all\nregular decorations. Use this for mark elements that should, as\nmuch as possible, remain in one piece.\n*/\nEditorView.outerDecorations = outerDecorations;\n/**\nUsed to provide ranges that should be treated as atoms as far as\ncursor motion is concerned. This causes methods like\n[`moveByChar`](https://codemirror.net/6/docs/ref/#view.EditorView.moveByChar) and\n[`moveVertically`](https://codemirror.net/6/docs/ref/#view.EditorView.moveVertically) (and the\ncommands built on top of them) to skip across such regions when\na selection endpoint would enter them. This does _not_ prevent\ndirect programmatic [selection\nupdates](https://codemirror.net/6/docs/ref/#state.TransactionSpec.selection) from moving into such\nregions.\n*/\nEditorView.atomicRanges = atomicRanges;\n/**\nWhen range decorations add a `unicode-bidi: isolate` style, they\nshould also include a\n[`bidiIsolate`](https://codemirror.net/6/docs/ref/#view.MarkDecorationSpec.bidiIsolate) property\nin their decoration spec, and be exposed through this facet, so\nthat the editor can compute the proper text order. (Other values\nfor `unicode-bidi`, except of course `normal`, are not\nsupported.)\n*/\nEditorView.bidiIsolatedRanges = bidiIsolatedRanges;\n/**\nFacet that allows extensions to provide additional scroll\nmargins (space around the sides of the scrolling element that\nshould be considered invisible). This can be useful when the\nplugin introduces elements that cover part of that element (for\nexample a horizontally fixed gutter).\n*/\nEditorView.scrollMargins = scrollMargins;\n/**\nThis facet records whether a dark theme is active. The extension\nreturned by [`theme`](https://codemirror.net/6/docs/ref/#view.EditorView^theme) automatically\nincludes an instance of this when the `dark` option is set to\ntrue.\n*/\nEditorView.darkTheme = darkTheme;\n/**\nProvides a Content Security Policy nonce to use when creating\nthe style sheets for the editor. Holds the empty string when no\nnonce has been provided.\n*/\nEditorView.cspNonce = /*@__PURE__*/Facet.define({ combine: values => values.length ? values[0] : \"\" });\n/**\nFacet that provides additional DOM attributes for the editor's\neditable DOM element.\n*/\nEditorView.contentAttributes = contentAttributes;\n/**\nFacet that provides DOM attributes for the editor's outer\nelement.\n*/\nEditorView.editorAttributes = editorAttributes;\n/**\nAn extension that enables line wrapping in the editor (by\nsetting CSS `white-space` to `pre-wrap` in the content).\n*/\nEditorView.lineWrapping = /*@__PURE__*/EditorView.contentAttributes.of({ \"class\": \"cm-lineWrapping\" });\n/**\nState effect used to include screen reader announcements in a\ntransaction. These will be added to the DOM in a visually hidden\nelement with `aria-live=\"polite\"` set, and should be used to\ndescribe effects that are visually obvious but may not be\nnoticed by screen reader users (such as moving to the next\nsearch match).\n*/\nEditorView.announce = /*@__PURE__*/StateEffect.define();\n// Maximum line length for which we compute accurate bidi info\nconst MaxBidiLine = 4096;\nconst BadMeasure = {};\nclass CachedOrder {\n    constructor(from, to, dir, isolates, fresh, order) {\n        this.from = from;\n        this.to = to;\n        this.dir = dir;\n        this.isolates = isolates;\n        this.fresh = fresh;\n        this.order = order;\n    }\n    static update(cache, changes) {\n        if (changes.empty && !cache.some(c => c.fresh))\n            return cache;\n        let result = [], lastDir = cache.length ? cache[cache.length - 1].dir : Direction.LTR;\n        for (let i = Math.max(0, cache.length - 10); i < cache.length; i++) {\n            let entry = cache[i];\n            if (entry.dir == lastDir && !changes.touchesRange(entry.from, entry.to))\n                result.push(new CachedOrder(changes.mapPos(entry.from, 1), changes.mapPos(entry.to, -1), entry.dir, entry.isolates, false, entry.order));\n        }\n        return result;\n    }\n}\nfunction attrsFromFacet(view, facet, base) {\n    for (let sources = view.state.facet(facet), i = sources.length - 1; i >= 0; i--) {\n        let source = sources[i], value = typeof source == \"function\" ? source(view) : source;\n        if (value)\n            combineAttrs(value, base);\n    }\n    return base;\n}\n\nconst currentPlatform = browser.mac ? \"mac\" : browser.windows ? \"win\" : browser.linux ? \"linux\" : \"key\";\nfunction normalizeKeyName(name, platform) {\n    const parts = name.split(/-(?!$)/);\n    let result = parts[parts.length - 1];\n    if (result == \"Space\")\n        result = \" \";\n    let alt, ctrl, shift, meta;\n    for (let i = 0; i < parts.length - 1; ++i) {\n        const mod = parts[i];\n        if (/^(cmd|meta|m)$/i.test(mod))\n            meta = true;\n        else if (/^a(lt)?$/i.test(mod))\n            alt = true;\n        else if (/^(c|ctrl|control)$/i.test(mod))\n            ctrl = true;\n        else if (/^s(hift)?$/i.test(mod))\n            shift = true;\n        else if (/^mod$/i.test(mod)) {\n            if (platform == \"mac\")\n                meta = true;\n            else\n                ctrl = true;\n        }\n        else\n            throw new Error(\"Unrecognized modifier name: \" + mod);\n    }\n    if (alt)\n        result = \"Alt-\" + result;\n    if (ctrl)\n        result = \"Ctrl-\" + result;\n    if (meta)\n        result = \"Meta-\" + result;\n    if (shift)\n        result = \"Shift-\" + result;\n    return result;\n}\nfunction modifiers(name, event, shift) {\n    if (event.altKey)\n        name = \"Alt-\" + name;\n    if (event.ctrlKey)\n        name = \"Ctrl-\" + name;\n    if (event.metaKey)\n        name = \"Meta-\" + name;\n    if (shift !== false && event.shiftKey)\n        name = \"Shift-\" + name;\n    return name;\n}\nconst handleKeyEvents = /*@__PURE__*/Prec.default(/*@__PURE__*/EditorView.domEventHandlers({\n    keydown(event, view) {\n        return runHandlers(getKeymap(view.state), event, view, \"editor\");\n    }\n}));\n/**\nFacet used for registering keymaps.\n\nYou can add multiple keymaps to an editor. Their priorities\ndetermine their precedence (the ones specified early or with high\npriority get checked first). When a handler has returned `true`\nfor a given key, no further handlers are called.\n*/\nconst keymap = /*@__PURE__*/Facet.define({ enables: handleKeyEvents });\nconst Keymaps = /*@__PURE__*/new WeakMap();\n// This is hidden behind an indirection, rather than directly computed\n// by the facet, to keep internal types out of the facet's type.\nfunction getKeymap(state) {\n    let bindings = state.facet(keymap);\n    let map = Keymaps.get(bindings);\n    if (!map)\n        Keymaps.set(bindings, map = buildKeymap(bindings.reduce((a, b) => a.concat(b), [])));\n    return map;\n}\n/**\nRun the key handlers registered for a given scope. The event\nobject should be a `\"keydown\"` event. Returns true if any of the\nhandlers handled it.\n*/\nfunction runScopeHandlers(view, event, scope) {\n    return runHandlers(getKeymap(view.state), event, view, scope);\n}\nlet storedPrefix = null;\nconst PrefixTimeout = 4000;\nfunction buildKeymap(bindings, platform = currentPlatform) {\n    let bound = Object.create(null);\n    let isPrefix = Object.create(null);\n    let checkPrefix = (name, is) => {\n        let current = isPrefix[name];\n        if (current == null)\n            isPrefix[name] = is;\n        else if (current != is)\n            throw new Error(\"Key binding \" + name + \" is used both as a regular binding and as a multi-stroke prefix\");\n    };\n    let add = (scope, key, command, preventDefault, stopPropagation) => {\n        var _a, _b;\n        let scopeObj = bound[scope] || (bound[scope] = Object.create(null));\n        let parts = key.split(/ (?!$)/).map(k => normalizeKeyName(k, platform));\n        for (let i = 1; i < parts.length; i++) {\n            let prefix = parts.slice(0, i).join(\" \");\n            checkPrefix(prefix, true);\n            if (!scopeObj[prefix])\n                scopeObj[prefix] = {\n                    preventDefault: true,\n                    stopPropagation: false,\n                    run: [(view) => {\n                            let ourObj = storedPrefix = { view, prefix, scope };\n                            setTimeout(() => { if (storedPrefix == ourObj)\n                                storedPrefix = null; }, PrefixTimeout);\n                            return true;\n                        }]\n                };\n        }\n        let full = parts.join(\" \");\n        checkPrefix(full, false);\n        let binding = scopeObj[full] || (scopeObj[full] = {\n            preventDefault: false,\n            stopPropagation: false,\n            run: ((_b = (_a = scopeObj._any) === null || _a === void 0 ? void 0 : _a.run) === null || _b === void 0 ? void 0 : _b.slice()) || []\n        });\n        if (command)\n            binding.run.push(command);\n        if (preventDefault)\n            binding.preventDefault = true;\n        if (stopPropagation)\n            binding.stopPropagation = true;\n    };\n    for (let b of bindings) {\n        let scopes = b.scope ? b.scope.split(\" \") : [\"editor\"];\n        if (b.any)\n            for (let scope of scopes) {\n                let scopeObj = bound[scope] || (bound[scope] = Object.create(null));\n                if (!scopeObj._any)\n                    scopeObj._any = { preventDefault: false, stopPropagation: false, run: [] };\n                let { any } = b;\n                for (let key in scopeObj)\n                    scopeObj[key].run.push(view => any(view, currentKeyEvent));\n            }\n        let name = b[platform] || b.key;\n        if (!name)\n            continue;\n        for (let scope of scopes) {\n            add(scope, name, b.run, b.preventDefault, b.stopPropagation);\n            if (b.shift)\n                add(scope, \"Shift-\" + name, b.shift, b.preventDefault, b.stopPropagation);\n        }\n    }\n    return bound;\n}\nlet currentKeyEvent = null;\nfunction runHandlers(map, event, view, scope) {\n    currentKeyEvent = event;\n    let name = keyName(event);\n    let charCode = codePointAt(name, 0), isChar = codePointSize(charCode) == name.length && name != \" \";\n    let prefix = \"\", handled = false, prevented = false, stopPropagation = false;\n    if (storedPrefix && storedPrefix.view == view && storedPrefix.scope == scope) {\n        prefix = storedPrefix.prefix + \" \";\n        if (modifierCodes.indexOf(event.keyCode) < 0) {\n            prevented = true;\n            storedPrefix = null;\n        }\n    }\n    let ran = new Set;\n    let runFor = (binding) => {\n        if (binding) {\n            for (let cmd of binding.run)\n                if (!ran.has(cmd)) {\n                    ran.add(cmd);\n                    if (cmd(view)) {\n                        if (binding.stopPropagation)\n                            stopPropagation = true;\n                        return true;\n                    }\n                }\n            if (binding.preventDefault) {\n                if (binding.stopPropagation)\n                    stopPropagation = true;\n                prevented = true;\n            }\n        }\n        return false;\n    };\n    let scopeObj = map[scope], baseName, shiftName;\n    if (scopeObj) {\n        if (runFor(scopeObj[prefix + modifiers(name, event, !isChar)])) {\n            handled = true;\n        }\n        else if (isChar && (event.altKey || event.metaKey || event.ctrlKey) &&\n            // Ctrl-Alt may be used for AltGr on Windows\n            !(browser.windows && event.ctrlKey && event.altKey) &&\n            (baseName = base[event.keyCode]) && baseName != name) {\n            if (runFor(scopeObj[prefix + modifiers(baseName, event, true)])) {\n                handled = true;\n            }\n            else if (event.shiftKey && (shiftName = shift[event.keyCode]) != name && shiftName != baseName &&\n                runFor(scopeObj[prefix + modifiers(shiftName, event, false)])) {\n                handled = true;\n            }\n        }\n        else if (isChar && event.shiftKey &&\n            runFor(scopeObj[prefix + modifiers(name, event, true)])) {\n            handled = true;\n        }\n        if (!handled && runFor(scopeObj._any))\n            handled = true;\n    }\n    if (prevented)\n        handled = true;\n    if (handled && stopPropagation)\n        event.stopPropagation();\n    currentKeyEvent = null;\n    return handled;\n}\n\n/**\nImplementation of [`LayerMarker`](https://codemirror.net/6/docs/ref/#view.LayerMarker) that creates\na rectangle at a given set of coordinates.\n*/\nclass RectangleMarker {\n    /**\n    Create a marker with the given class and dimensions. If `width`\n    is null, the DOM element will get no width style.\n    */\n    constructor(className, \n    /**\n    The left position of the marker (in pixels, document-relative).\n    */\n    left, \n    /**\n    The top position of the marker.\n    */\n    top, \n    /**\n    The width of the marker, or null if it shouldn't get a width assigned.\n    */\n    width, \n    /**\n    The height of the marker.\n    */\n    height) {\n        this.className = className;\n        this.left = left;\n        this.top = top;\n        this.width = width;\n        this.height = height;\n    }\n    draw() {\n        let elt = document.createElement(\"div\");\n        elt.className = this.className;\n        this.adjust(elt);\n        return elt;\n    }\n    update(elt, prev) {\n        if (prev.className != this.className)\n            return false;\n        this.adjust(elt);\n        return true;\n    }\n    adjust(elt) {\n        elt.style.left = this.left + \"px\";\n        elt.style.top = this.top + \"px\";\n        if (this.width != null)\n            elt.style.width = this.width + \"px\";\n        elt.style.height = this.height + \"px\";\n    }\n    eq(p) {\n        return this.left == p.left && this.top == p.top && this.width == p.width && this.height == p.height &&\n            this.className == p.className;\n    }\n    /**\n    Create a set of rectangles for the given selection range,\n    assigning them theclass`className`. Will create a single\n    rectangle for empty ranges, and a set of selection-style\n    rectangles covering the range's content (in a bidi-aware\n    way) for non-empty ones.\n    */\n    static forRange(view, className, range) {\n        if (range.empty) {\n            let pos = view.coordsAtPos(range.head, range.assoc || 1);\n            if (!pos)\n                return [];\n            let base = getBase(view);\n            return [new RectangleMarker(className, pos.left - base.left, pos.top - base.top, null, pos.bottom - pos.top)];\n        }\n        else {\n            return rectanglesForRange(view, className, range);\n        }\n    }\n}\nfunction getBase(view) {\n    let rect = view.scrollDOM.getBoundingClientRect();\n    let left = view.textDirection == Direction.LTR ? rect.left : rect.right - view.scrollDOM.clientWidth * view.scaleX;\n    return { left: left - view.scrollDOM.scrollLeft * view.scaleX, top: rect.top - view.scrollDOM.scrollTop * view.scaleY };\n}\nfunction wrappedLine(view, pos, side, inside) {\n    let coords = view.coordsAtPos(pos, side * 2);\n    if (!coords)\n        return inside;\n    let editorRect = view.dom.getBoundingClientRect();\n    let y = (coords.top + coords.bottom) / 2;\n    let left = view.posAtCoords({ x: editorRect.left + 1, y });\n    let right = view.posAtCoords({ x: editorRect.right - 1, y });\n    if (left == null || right == null)\n        return inside;\n    return { from: Math.max(inside.from, Math.min(left, right)), to: Math.min(inside.to, Math.max(left, right)) };\n}\nfunction rectanglesForRange(view, className, range) {\n    if (range.to <= view.viewport.from || range.from >= view.viewport.to)\n        return [];\n    let from = Math.max(range.from, view.viewport.from), to = Math.min(range.to, view.viewport.to);\n    let ltr = view.textDirection == Direction.LTR;\n    let content = view.contentDOM, contentRect = content.getBoundingClientRect(), base = getBase(view);\n    let lineElt = content.querySelector(\".cm-line\"), lineStyle = lineElt && window.getComputedStyle(lineElt);\n    let leftSide = contentRect.left +\n        (lineStyle ? parseInt(lineStyle.paddingLeft) + Math.min(0, parseInt(lineStyle.textIndent)) : 0);\n    let rightSide = contentRect.right - (lineStyle ? parseInt(lineStyle.paddingRight) : 0);\n    let startBlock = blockAt(view, from), endBlock = blockAt(view, to);\n    let visualStart = startBlock.type == BlockType.Text ? startBlock : null;\n    let visualEnd = endBlock.type == BlockType.Text ? endBlock : null;\n    if (visualStart && (view.lineWrapping || startBlock.widgetLineBreaks))\n        visualStart = wrappedLine(view, from, 1, visualStart);\n    if (visualEnd && (view.lineWrapping || endBlock.widgetLineBreaks))\n        visualEnd = wrappedLine(view, to, -1, visualEnd);\n    if (visualStart && visualEnd && visualStart.from == visualEnd.from && visualStart.to == visualEnd.to) {\n        return pieces(drawForLine(range.from, range.to, visualStart));\n    }\n    else {\n        let top = visualStart ? drawForLine(range.from, null, visualStart) : drawForWidget(startBlock, false);\n        let bottom = visualEnd ? drawForLine(null, range.to, visualEnd) : drawForWidget(endBlock, true);\n        let between = [];\n        if ((visualStart || startBlock).to < (visualEnd || endBlock).from - (visualStart && visualEnd ? 1 : 0) ||\n            startBlock.widgetLineBreaks > 1 && top.bottom + view.defaultLineHeight / 2 < bottom.top)\n            between.push(piece(leftSide, top.bottom, rightSide, bottom.top));\n        else if (top.bottom < bottom.top && view.elementAtHeight((top.bottom + bottom.top) / 2).type == BlockType.Text)\n            top.bottom = bottom.top = (top.bottom + bottom.top) / 2;\n        return pieces(top).concat(between).concat(pieces(bottom));\n    }\n    function piece(left, top, right, bottom) {\n        return new RectangleMarker(className, left - base.left, top - base.top - 0.01 /* C.Epsilon */, right - left, bottom - top + 0.01 /* C.Epsilon */);\n    }\n    function pieces({ top, bottom, horizontal }) {\n        let pieces = [];\n        for (let i = 0; i < horizontal.length; i += 2)\n            pieces.push(piece(horizontal[i], top, horizontal[i + 1], bottom));\n        return pieces;\n    }\n    // Gets passed from/to in line-local positions\n    function drawForLine(from, to, line) {\n        let top = 1e9, bottom = -1e9, horizontal = [];\n        function addSpan(from, fromOpen, to, toOpen, dir) {\n            // Passing 2/-2 is a kludge to force the view to return\n            // coordinates on the proper side of block widgets, since\n            // normalizing the side there, though appropriate for most\n            // coordsAtPos queries, would break selection drawing.\n            let fromCoords = view.coordsAtPos(from, (from == line.to ? -2 : 2));\n            let toCoords = view.coordsAtPos(to, (to == line.from ? 2 : -2));\n            if (!fromCoords || !toCoords)\n                return;\n            top = Math.min(fromCoords.top, toCoords.top, top);\n            bottom = Math.max(fromCoords.bottom, toCoords.bottom, bottom);\n            if (dir == Direction.LTR)\n                horizontal.push(ltr && fromOpen ? leftSide : fromCoords.left, ltr && toOpen ? rightSide : toCoords.right);\n            else\n                horizontal.push(!ltr && toOpen ? leftSide : toCoords.left, !ltr && fromOpen ? rightSide : fromCoords.right);\n        }\n        let start = from !== null && from !== void 0 ? from : line.from, end = to !== null && to !== void 0 ? to : line.to;\n        // Split the range by visible range and document line\n        for (let r of view.visibleRanges)\n            if (r.to > start && r.from < end) {\n                for (let pos = Math.max(r.from, start), endPos = Math.min(r.to, end);;) {\n                    let docLine = view.state.doc.lineAt(pos);\n                    for (let span of view.bidiSpans(docLine)) {\n                        let spanFrom = span.from + docLine.from, spanTo = span.to + docLine.from;\n                        if (spanFrom >= endPos)\n                            break;\n                        if (spanTo > pos)\n                            addSpan(Math.max(spanFrom, pos), from == null && spanFrom <= start, Math.min(spanTo, endPos), to == null && spanTo >= end, span.dir);\n                    }\n                    pos = docLine.to + 1;\n                    if (pos >= endPos)\n                        break;\n                }\n            }\n        if (horizontal.length == 0)\n            addSpan(start, from == null, end, to == null, view.textDirection);\n        return { top, bottom, horizontal };\n    }\n    function drawForWidget(block, top) {\n        let y = contentRect.top + (top ? block.top : block.bottom);\n        return { top: y, bottom: y, horizontal: [] };\n    }\n}\nfunction sameMarker(a, b) {\n    return a.constructor == b.constructor && a.eq(b);\n}\nclass LayerView {\n    constructor(view, layer) {\n        this.view = view;\n        this.layer = layer;\n        this.drawn = [];\n        this.scaleX = 1;\n        this.scaleY = 1;\n        this.measureReq = { read: this.measure.bind(this), write: this.draw.bind(this) };\n        this.dom = view.scrollDOM.appendChild(document.createElement(\"div\"));\n        this.dom.classList.add(\"cm-layer\");\n        if (layer.above)\n            this.dom.classList.add(\"cm-layer-above\");\n        if (layer.class)\n            this.dom.classList.add(layer.class);\n        this.scale();\n        this.dom.setAttribute(\"aria-hidden\", \"true\");\n        this.setOrder(view.state);\n        view.requestMeasure(this.measureReq);\n        if (layer.mount)\n            layer.mount(this.dom, view);\n    }\n    update(update) {\n        if (update.startState.facet(layerOrder) != update.state.facet(layerOrder))\n            this.setOrder(update.state);\n        if (this.layer.update(update, this.dom) || update.geometryChanged) {\n            this.scale();\n            update.view.requestMeasure(this.measureReq);\n        }\n    }\n    docViewUpdate(view) {\n        if (this.layer.updateOnDocViewUpdate !== false)\n            view.requestMeasure(this.measureReq);\n    }\n    setOrder(state) {\n        let pos = 0, order = state.facet(layerOrder);\n        while (pos < order.length && order[pos] != this.layer)\n            pos++;\n        this.dom.style.zIndex = String((this.layer.above ? 150 : -1) - pos);\n    }\n    measure() {\n        return this.layer.markers(this.view);\n    }\n    scale() {\n        let { scaleX, scaleY } = this.view;\n        if (scaleX != this.scaleX || scaleY != this.scaleY) {\n            this.scaleX = scaleX;\n            this.scaleY = scaleY;\n            this.dom.style.transform = `scale(${1 / scaleX}, ${1 / scaleY})`;\n        }\n    }\n    draw(markers) {\n        if (markers.length != this.drawn.length || markers.some((p, i) => !sameMarker(p, this.drawn[i]))) {\n            let old = this.dom.firstChild, oldI = 0;\n            for (let marker of markers) {\n                if (marker.update && old && marker.constructor && this.drawn[oldI].constructor &&\n                    marker.update(old, this.drawn[oldI])) {\n                    old = old.nextSibling;\n                    oldI++;\n                }\n                else {\n                    this.dom.insertBefore(marker.draw(), old);\n                }\n            }\n            while (old) {\n                let next = old.nextSibling;\n                old.remove();\n                old = next;\n            }\n            this.drawn = markers;\n        }\n    }\n    destroy() {\n        if (this.layer.destroy)\n            this.layer.destroy(this.dom, this.view);\n        this.dom.remove();\n    }\n}\nconst layerOrder = /*@__PURE__*/Facet.define();\n/**\nDefine a layer.\n*/\nfunction layer(config) {\n    return [\n        ViewPlugin.define(v => new LayerView(v, config)),\n        layerOrder.of(config)\n    ];\n}\n\nconst CanHidePrimary = !browser.ios; // FIXME test IE\nconst selectionConfig = /*@__PURE__*/Facet.define({\n    combine(configs) {\n        return combineConfig(configs, {\n            cursorBlinkRate: 1200,\n            drawRangeCursor: true\n        }, {\n            cursorBlinkRate: (a, b) => Math.min(a, b),\n            drawRangeCursor: (a, b) => a || b\n        });\n    }\n});\n/**\nReturns an extension that hides the browser's native selection and\ncursor, replacing the selection with a background behind the text\n(with the `cm-selectionBackground` class), and the\ncursors with elements overlaid over the code (using\n`cm-cursor-primary` and `cm-cursor-secondary`).\n\nThis allows the editor to display secondary selection ranges, and\ntends to produce a type of selection more in line with that users\nexpect in a text editor (the native selection styling will often\nleave gaps between lines and won't fill the horizontal space after\na line when the selection continues past it).\n\nIt does have a performance cost, in that it requires an extra DOM\nlayout cycle for many updates (the selection is drawn based on DOM\nlayout information that's only available after laying out the\ncontent).\n*/\nfunction drawSelection(config = {}) {\n    return [\n        selectionConfig.of(config),\n        cursorLayer,\n        selectionLayer,\n        hideNativeSelection,\n        nativeSelectionHidden.of(true)\n    ];\n}\n/**\nRetrieve the [`drawSelection`](https://codemirror.net/6/docs/ref/#view.drawSelection) configuration\nfor this state. (Note that this will return a set of defaults even\nif `drawSelection` isn't enabled.)\n*/\nfunction getDrawSelectionConfig(state) {\n    return state.facet(selectionConfig);\n}\nfunction configChanged(update) {\n    return update.startState.facet(selectionConfig) != update.state.facet(selectionConfig);\n}\nconst cursorLayer = /*@__PURE__*/layer({\n    above: true,\n    markers(view) {\n        let { state } = view, conf = state.facet(selectionConfig);\n        let cursors = [];\n        for (let r of state.selection.ranges) {\n            let prim = r == state.selection.main;\n            if (r.empty ? !prim || CanHidePrimary : conf.drawRangeCursor) {\n                let className = prim ? \"cm-cursor cm-cursor-primary\" : \"cm-cursor cm-cursor-secondary\";\n                let cursor = r.empty ? r : EditorSelection.cursor(r.head, r.head > r.anchor ? -1 : 1);\n                for (let piece of RectangleMarker.forRange(view, className, cursor))\n                    cursors.push(piece);\n            }\n        }\n        return cursors;\n    },\n    update(update, dom) {\n        if (update.transactions.some(tr => tr.selection))\n            dom.style.animationName = dom.style.animationName == \"cm-blink\" ? \"cm-blink2\" : \"cm-blink\";\n        let confChange = configChanged(update);\n        if (confChange)\n            setBlinkRate(update.state, dom);\n        return update.docChanged || update.selectionSet || confChange;\n    },\n    mount(dom, view) {\n        setBlinkRate(view.state, dom);\n    },\n    class: \"cm-cursorLayer\"\n});\nfunction setBlinkRate(state, dom) {\n    dom.style.animationDuration = state.facet(selectionConfig).cursorBlinkRate + \"ms\";\n}\nconst selectionLayer = /*@__PURE__*/layer({\n    above: false,\n    markers(view) {\n        return view.state.selection.ranges.map(r => r.empty ? [] : RectangleMarker.forRange(view, \"cm-selectionBackground\", r))\n            .reduce((a, b) => a.concat(b));\n    },\n    update(update, dom) {\n        return update.docChanged || update.selectionSet || update.viewportChanged || configChanged(update);\n    },\n    class: \"cm-selectionLayer\"\n});\nconst themeSpec = {\n    \".cm-line\": {\n        \"& ::selection, &::selection\": { backgroundColor: \"transparent !important\" },\n    },\n    \".cm-content\": {\n        \"& :focus\": {\n            caretColor: \"initial !important\",\n            \"&::selection, & ::selection\": {\n                backgroundColor: \"Highlight !important\"\n            }\n        }\n    }\n};\nif (CanHidePrimary)\n    themeSpec[\".cm-line\"].caretColor = themeSpec[\".cm-content\"].caretColor = \"transparent !important\";\nconst hideNativeSelection = /*@__PURE__*/Prec.highest(/*@__PURE__*/EditorView.theme(themeSpec));\n\nconst setDropCursorPos = /*@__PURE__*/StateEffect.define({\n    map(pos, mapping) { return pos == null ? null : mapping.mapPos(pos); }\n});\nconst dropCursorPos = /*@__PURE__*/StateField.define({\n    create() { return null; },\n    update(pos, tr) {\n        if (pos != null)\n            pos = tr.changes.mapPos(pos);\n        return tr.effects.reduce((pos, e) => e.is(setDropCursorPos) ? e.value : pos, pos);\n    }\n});\nconst drawDropCursor = /*@__PURE__*/ViewPlugin.fromClass(class {\n    constructor(view) {\n        this.view = view;\n        this.cursor = null;\n        this.measureReq = { read: this.readPos.bind(this), write: this.drawCursor.bind(this) };\n    }\n    update(update) {\n        var _a;\n        let cursorPos = update.state.field(dropCursorPos);\n        if (cursorPos == null) {\n            if (this.cursor != null) {\n                (_a = this.cursor) === null || _a === void 0 ? void 0 : _a.remove();\n                this.cursor = null;\n            }\n        }\n        else {\n            if (!this.cursor) {\n                this.cursor = this.view.scrollDOM.appendChild(document.createElement(\"div\"));\n                this.cursor.className = \"cm-dropCursor\";\n            }\n            if (update.startState.field(dropCursorPos) != cursorPos || update.docChanged || update.geometryChanged)\n                this.view.requestMeasure(this.measureReq);\n        }\n    }\n    readPos() {\n        let { view } = this;\n        let pos = view.state.field(dropCursorPos);\n        let rect = pos != null && view.coordsAtPos(pos);\n        if (!rect)\n            return null;\n        let outer = view.scrollDOM.getBoundingClientRect();\n        return {\n            left: rect.left - outer.left + view.scrollDOM.scrollLeft * view.scaleX,\n            top: rect.top - outer.top + view.scrollDOM.scrollTop * view.scaleY,\n            height: rect.bottom - rect.top\n        };\n    }\n    drawCursor(pos) {\n        if (this.cursor) {\n            let { scaleX, scaleY } = this.view;\n            if (pos) {\n                this.cursor.style.left = pos.left / scaleX + \"px\";\n                this.cursor.style.top = pos.top / scaleY + \"px\";\n                this.cursor.style.height = pos.height / scaleY + \"px\";\n            }\n            else {\n                this.cursor.style.left = \"-100000px\";\n            }\n        }\n    }\n    destroy() {\n        if (this.cursor)\n            this.cursor.remove();\n    }\n    setDropPos(pos) {\n        if (this.view.state.field(dropCursorPos) != pos)\n            this.view.dispatch({ effects: setDropCursorPos.of(pos) });\n    }\n}, {\n    eventObservers: {\n        dragover(event) {\n            this.setDropPos(this.view.posAtCoords({ x: event.clientX, y: event.clientY }));\n        },\n        dragleave(event) {\n            if (event.target == this.view.contentDOM || !this.view.contentDOM.contains(event.relatedTarget))\n                this.setDropPos(null);\n        },\n        dragend() {\n            this.setDropPos(null);\n        },\n        drop() {\n            this.setDropPos(null);\n        }\n    }\n});\n/**\nDraws a cursor at the current drop position when something is\ndragged over the editor.\n*/\nfunction dropCursor() {\n    return [dropCursorPos, drawDropCursor];\n}\n\nfunction iterMatches(doc, re, from, to, f) {\n    re.lastIndex = 0;\n    for (let cursor = doc.iterRange(from, to), pos = from, m; !cursor.next().done; pos += cursor.value.length) {\n        if (!cursor.lineBreak)\n            while (m = re.exec(cursor.value))\n                f(pos + m.index, m);\n    }\n}\nfunction matchRanges(view, maxLength) {\n    let visible = view.visibleRanges;\n    if (visible.length == 1 && visible[0].from == view.viewport.from &&\n        visible[0].to == view.viewport.to)\n        return visible;\n    let result = [];\n    for (let { from, to } of visible) {\n        from = Math.max(view.state.doc.lineAt(from).from, from - maxLength);\n        to = Math.min(view.state.doc.lineAt(to).to, to + maxLength);\n        if (result.length && result[result.length - 1].to >= from)\n            result[result.length - 1].to = to;\n        else\n            result.push({ from, to });\n    }\n    return result;\n}\n/**\nHelper class used to make it easier to maintain decorations on\nvisible code that matches a given regular expression. To be used\nin a [view plugin](https://codemirror.net/6/docs/ref/#view.ViewPlugin). Instances of this object\nrepresent a matching configuration.\n*/\nclass MatchDecorator {\n    /**\n    Create a decorator.\n    */\n    constructor(config) {\n        const { regexp, decoration, decorate, boundary, maxLength = 1000 } = config;\n        if (!regexp.global)\n            throw new RangeError(\"The regular expression given to MatchDecorator should have its 'g' flag set\");\n        this.regexp = regexp;\n        if (decorate) {\n            this.addMatch = (match, view, from, add) => decorate(add, from, from + match[0].length, match, view);\n        }\n        else if (typeof decoration == \"function\") {\n            this.addMatch = (match, view, from, add) => {\n                let deco = decoration(match, view, from);\n                if (deco)\n                    add(from, from + match[0].length, deco);\n            };\n        }\n        else if (decoration) {\n            this.addMatch = (match, _view, from, add) => add(from, from + match[0].length, decoration);\n        }\n        else {\n            throw new RangeError(\"Either 'decorate' or 'decoration' should be provided to MatchDecorator\");\n        }\n        this.boundary = boundary;\n        this.maxLength = maxLength;\n    }\n    /**\n    Compute the full set of decorations for matches in the given\n    view's viewport. You'll want to call this when initializing your\n    plugin.\n    */\n    createDeco(view) {\n        let build = new RangeSetBuilder(), add = build.add.bind(build);\n        for (let { from, to } of matchRanges(view, this.maxLength))\n            iterMatches(view.state.doc, this.regexp, from, to, (from, m) => this.addMatch(m, view, from, add));\n        return build.finish();\n    }\n    /**\n    Update a set of decorations for a view update. `deco` _must_ be\n    the set of decorations produced by _this_ `MatchDecorator` for\n    the view state before the update.\n    */\n    updateDeco(update, deco) {\n        let changeFrom = 1e9, changeTo = -1;\n        if (update.docChanged)\n            update.changes.iterChanges((_f, _t, from, to) => {\n                if (to > update.view.viewport.from && from < update.view.viewport.to) {\n                    changeFrom = Math.min(from, changeFrom);\n                    changeTo = Math.max(to, changeTo);\n                }\n            });\n        if (update.viewportChanged || changeTo - changeFrom > 1000)\n            return this.createDeco(update.view);\n        if (changeTo > -1)\n            return this.updateRange(update.view, deco.map(update.changes), changeFrom, changeTo);\n        return deco;\n    }\n    updateRange(view, deco, updateFrom, updateTo) {\n        for (let r of view.visibleRanges) {\n            let from = Math.max(r.from, updateFrom), to = Math.min(r.to, updateTo);\n            if (to > from) {\n                let fromLine = view.state.doc.lineAt(from), toLine = fromLine.to < to ? view.state.doc.lineAt(to) : fromLine;\n                let start = Math.max(r.from, fromLine.from), end = Math.min(r.to, toLine.to);\n                if (this.boundary) {\n                    for (; from > fromLine.from; from--)\n                        if (this.boundary.test(fromLine.text[from - 1 - fromLine.from])) {\n                            start = from;\n                            break;\n                        }\n                    for (; to < toLine.to; to++)\n                        if (this.boundary.test(toLine.text[to - toLine.from])) {\n                            end = to;\n                            break;\n                        }\n                }\n                let ranges = [], m;\n                let add = (from, to, deco) => ranges.push(deco.range(from, to));\n                if (fromLine == toLine) {\n                    this.regexp.lastIndex = start - fromLine.from;\n                    while ((m = this.regexp.exec(fromLine.text)) && m.index < end - fromLine.from)\n                        this.addMatch(m, view, m.index + fromLine.from, add);\n                }\n                else {\n                    iterMatches(view.state.doc, this.regexp, start, end, (from, m) => this.addMatch(m, view, from, add));\n                }\n                deco = deco.update({ filterFrom: start, filterTo: end, filter: (from, to) => from < start || to > end, add: ranges });\n            }\n        }\n        return deco;\n    }\n}\n\nconst UnicodeRegexpSupport = /x/.unicode != null ? \"gu\" : \"g\";\nconst Specials = /*@__PURE__*/new RegExp(\"[\\u0000-\\u0008\\u000a-\\u001f\\u007f-\\u009f\\u00ad\\u061c\\u200b\\u200e\\u200f\\u2028\\u2029\\u202d\\u202e\\u2066\\u2067\\u2069\\ufeff\\ufff9-\\ufffc]\", UnicodeRegexpSupport);\nconst Names = {\n    0: \"null\",\n    7: \"bell\",\n    8: \"backspace\",\n    10: \"newline\",\n    11: \"vertical tab\",\n    13: \"carriage return\",\n    27: \"escape\",\n    8203: \"zero width space\",\n    8204: \"zero width non-joiner\",\n    8205: \"zero width joiner\",\n    8206: \"left-to-right mark\",\n    8207: \"right-to-left mark\",\n    8232: \"line separator\",\n    8237: \"left-to-right override\",\n    8238: \"right-to-left override\",\n    8294: \"left-to-right isolate\",\n    8295: \"right-to-left isolate\",\n    8297: \"pop directional isolate\",\n    8233: \"paragraph separator\",\n    65279: \"zero width no-break space\",\n    65532: \"object replacement\"\n};\nlet _supportsTabSize = null;\nfunction supportsTabSize() {\n    var _a;\n    if (_supportsTabSize == null && typeof document != \"undefined\" && document.body) {\n        let styles = document.body.style;\n        _supportsTabSize = ((_a = styles.tabSize) !== null && _a !== void 0 ? _a : styles.MozTabSize) != null;\n    }\n    return _supportsTabSize || false;\n}\nconst specialCharConfig = /*@__PURE__*/Facet.define({\n    combine(configs) {\n        let config = combineConfig(configs, {\n            render: null,\n            specialChars: Specials,\n            addSpecialChars: null\n        });\n        if (config.replaceTabs = !supportsTabSize())\n            config.specialChars = new RegExp(\"\\t|\" + config.specialChars.source, UnicodeRegexpSupport);\n        if (config.addSpecialChars)\n            config.specialChars = new RegExp(config.specialChars.source + \"|\" + config.addSpecialChars.source, UnicodeRegexpSupport);\n        return config;\n    }\n});\n/**\nReturns an extension that installs highlighting of special\ncharacters.\n*/\nfunction highlightSpecialChars(\n/**\nConfiguration options.\n*/\nconfig = {}) {\n    return [specialCharConfig.of(config), specialCharPlugin()];\n}\nlet _plugin = null;\nfunction specialCharPlugin() {\n    return _plugin || (_plugin = ViewPlugin.fromClass(class {\n        constructor(view) {\n            this.view = view;\n            this.decorations = Decoration.none;\n            this.decorationCache = Object.create(null);\n            this.decorator = this.makeDecorator(view.state.facet(specialCharConfig));\n            this.decorations = this.decorator.createDeco(view);\n        }\n        makeDecorator(conf) {\n            return new MatchDecorator({\n                regexp: conf.specialChars,\n                decoration: (m, view, pos) => {\n                    let { doc } = view.state;\n                    let code = codePointAt(m[0], 0);\n                    if (code == 9) {\n                        let line = doc.lineAt(pos);\n                        let size = view.state.tabSize, col = countColumn(line.text, size, pos - line.from);\n                        return Decoration.replace({\n                            widget: new TabWidget((size - (col % size)) * this.view.defaultCharacterWidth / this.view.scaleX)\n                        });\n                    }\n                    return this.decorationCache[code] ||\n                        (this.decorationCache[code] = Decoration.replace({ widget: new SpecialCharWidget(conf, code) }));\n                },\n                boundary: conf.replaceTabs ? undefined : /[^]/\n            });\n        }\n        update(update) {\n            let conf = update.state.facet(specialCharConfig);\n            if (update.startState.facet(specialCharConfig) != conf) {\n                this.decorator = this.makeDecorator(conf);\n                this.decorations = this.decorator.createDeco(update.view);\n            }\n            else {\n                this.decorations = this.decorator.updateDeco(update, this.decorations);\n            }\n        }\n    }, {\n        decorations: v => v.decorations\n    }));\n}\nconst DefaultPlaceholder = \"\\u2022\";\n// Assigns placeholder characters from the Control Pictures block to\n// ASCII control characters\nfunction placeholder$1(code) {\n    if (code >= 32)\n        return DefaultPlaceholder;\n    if (code == 10)\n        return \"\\u2424\";\n    return String.fromCharCode(9216 + code);\n}\nclass SpecialCharWidget extends WidgetType {\n    constructor(options, code) {\n        super();\n        this.options = options;\n        this.code = code;\n    }\n    eq(other) { return other.code == this.code; }\n    toDOM(view) {\n        let ph = placeholder$1(this.code);\n        let desc = view.state.phrase(\"Control character\") + \" \" + (Names[this.code] || \"0x\" + this.code.toString(16));\n        let custom = this.options.render && this.options.render(this.code, desc, ph);\n        if (custom)\n            return custom;\n        let span = document.createElement(\"span\");\n        span.textContent = ph;\n        span.title = desc;\n        span.setAttribute(\"aria-label\", desc);\n        span.className = \"cm-specialChar\";\n        return span;\n    }\n    ignoreEvent() { return false; }\n}\nclass TabWidget extends WidgetType {\n    constructor(width) {\n        super();\n        this.width = width;\n    }\n    eq(other) { return other.width == this.width; }\n    toDOM() {\n        let span = document.createElement(\"span\");\n        span.textContent = \"\\t\";\n        span.className = \"cm-tab\";\n        span.style.width = this.width + \"px\";\n        return span;\n    }\n    ignoreEvent() { return false; }\n}\n\nconst plugin = /*@__PURE__*/ViewPlugin.fromClass(class {\n    constructor() {\n        this.height = 1000;\n        this.attrs = { style: \"padding-bottom: 1000px\" };\n    }\n    update(update) {\n        let { view } = update;\n        let height = view.viewState.editorHeight -\n            view.defaultLineHeight - view.documentPadding.top - 0.5;\n        if (height >= 0 && height != this.height) {\n            this.height = height;\n            this.attrs = { style: `padding-bottom: ${height}px` };\n        }\n    }\n});\n/**\nReturns an extension that makes sure the content has a bottom\nmargin equivalent to the height of the editor, minus one line\nheight, so that every line in the document can be scrolled to the\ntop of the editor.\n\nThis is only meaningful when the editor is scrollable, and should\nnot be enabled in editors that take the size of their content.\n*/\nfunction scrollPastEnd() {\n    return [plugin, contentAttributes.of(view => { var _a; return ((_a = view.plugin(plugin)) === null || _a === void 0 ? void 0 : _a.attrs) || null; })];\n}\n\n/**\nMark lines that have a cursor on them with the `\"cm-activeLine\"`\nDOM class.\n*/\nfunction highlightActiveLine() {\n    return activeLineHighlighter;\n}\nconst lineDeco = /*@__PURE__*/Decoration.line({ class: \"cm-activeLine\" });\nconst activeLineHighlighter = /*@__PURE__*/ViewPlugin.fromClass(class {\n    constructor(view) {\n        this.decorations = this.getDeco(view);\n    }\n    update(update) {\n        if (update.docChanged || update.selectionSet)\n            this.decorations = this.getDeco(update.view);\n    }\n    getDeco(view) {\n        let lastLineStart = -1, deco = [];\n        for (let r of view.state.selection.ranges) {\n            let line = view.lineBlockAt(r.head);\n            if (line.from > lastLineStart) {\n                deco.push(lineDeco.range(line.from));\n                lastLineStart = line.from;\n            }\n        }\n        return Decoration.set(deco);\n    }\n}, {\n    decorations: v => v.decorations\n});\n\nclass Placeholder extends WidgetType {\n    constructor(content) {\n        super();\n        this.content = content;\n    }\n    toDOM(view) {\n        let wrap = document.createElement(\"span\");\n        wrap.className = \"cm-placeholder\";\n        wrap.style.pointerEvents = \"none\";\n        wrap.appendChild(typeof this.content == \"string\" ? document.createTextNode(this.content) :\n            typeof this.content == \"function\" ? this.content(view) :\n                this.content.cloneNode(true));\n        if (typeof this.content == \"string\")\n            wrap.setAttribute(\"aria-label\", \"placeholder \" + this.content);\n        else\n            wrap.setAttribute(\"aria-hidden\", \"true\");\n        return wrap;\n    }\n    coordsAt(dom) {\n        let rects = dom.firstChild ? clientRectsFor(dom.firstChild) : [];\n        if (!rects.length)\n            return null;\n        let style = window.getComputedStyle(dom.parentNode);\n        let rect = flattenRect(rects[0], style.direction != \"rtl\");\n        let lineHeight = parseInt(style.lineHeight);\n        if (rect.bottom - rect.top > lineHeight * 1.5)\n            return { left: rect.left, right: rect.right, top: rect.top, bottom: rect.top + lineHeight };\n        return rect;\n    }\n    ignoreEvent() { return false; }\n}\n/**\nExtension that enables a placeholder—a piece of example content\nto show when the editor is empty.\n*/\nfunction placeholder(content) {\n    return ViewPlugin.fromClass(class {\n        constructor(view) {\n            this.view = view;\n            this.placeholder = content\n                ? Decoration.set([Decoration.widget({ widget: new Placeholder(content), side: 1 }).range(0)])\n                : Decoration.none;\n        }\n        get decorations() { return this.view.state.doc.length ? Decoration.none : this.placeholder; }\n    }, { decorations: v => v.decorations });\n}\n\n// Don't compute precise column positions for line offsets above this\n// (since it could get expensive). Assume offset==column for them.\nconst MaxOff = 2000;\nfunction rectangleFor(state, a, b) {\n    let startLine = Math.min(a.line, b.line), endLine = Math.max(a.line, b.line);\n    let ranges = [];\n    if (a.off > MaxOff || b.off > MaxOff || a.col < 0 || b.col < 0) {\n        let startOff = Math.min(a.off, b.off), endOff = Math.max(a.off, b.off);\n        for (let i = startLine; i <= endLine; i++) {\n            let line = state.doc.line(i);\n            if (line.length <= endOff)\n                ranges.push(EditorSelection.range(line.from + startOff, line.to + endOff));\n        }\n    }\n    else {\n        let startCol = Math.min(a.col, b.col), endCol = Math.max(a.col, b.col);\n        for (let i = startLine; i <= endLine; i++) {\n            let line = state.doc.line(i);\n            let start = findColumn(line.text, startCol, state.tabSize, true);\n            if (start < 0) {\n                ranges.push(EditorSelection.cursor(line.to));\n            }\n            else {\n                let end = findColumn(line.text, endCol, state.tabSize);\n                ranges.push(EditorSelection.range(line.from + start, line.from + end));\n            }\n        }\n    }\n    return ranges;\n}\nfunction absoluteColumn(view, x) {\n    let ref = view.coordsAtPos(view.viewport.from);\n    return ref ? Math.round(Math.abs((ref.left - x) / view.defaultCharacterWidth)) : -1;\n}\nfunction getPos(view, event) {\n    let offset = view.posAtCoords({ x: event.clientX, y: event.clientY }, false);\n    let line = view.state.doc.lineAt(offset), off = offset - line.from;\n    let col = off > MaxOff ? -1\n        : off == line.length ? absoluteColumn(view, event.clientX)\n            : countColumn(line.text, view.state.tabSize, offset - line.from);\n    return { line: line.number, col, off };\n}\nfunction rectangleSelectionStyle(view, event) {\n    let start = getPos(view, event), startSel = view.state.selection;\n    if (!start)\n        return null;\n    return {\n        update(update) {\n            if (update.docChanged) {\n                let newStart = update.changes.mapPos(update.startState.doc.line(start.line).from);\n                let newLine = update.state.doc.lineAt(newStart);\n                start = { line: newLine.number, col: start.col, off: Math.min(start.off, newLine.length) };\n                startSel = startSel.map(update.changes);\n            }\n        },\n        get(event, _extend, multiple) {\n            let cur = getPos(view, event);\n            if (!cur)\n                return startSel;\n            let ranges = rectangleFor(view.state, start, cur);\n            if (!ranges.length)\n                return startSel;\n            if (multiple)\n                return EditorSelection.create(ranges.concat(startSel.ranges));\n            else\n                return EditorSelection.create(ranges);\n        }\n    };\n}\n/**\nCreate an extension that enables rectangular selections. By\ndefault, it will react to left mouse drag with the Alt key held\ndown. When such a selection occurs, the text within the rectangle\nthat was dragged over will be selected, as one selection\n[range](https://codemirror.net/6/docs/ref/#state.SelectionRange) per line.\n*/\nfunction rectangularSelection(options) {\n    let filter = (options === null || options === void 0 ? void 0 : options.eventFilter) || (e => e.altKey && e.button == 0);\n    return EditorView.mouseSelectionStyle.of((view, event) => filter(event) ? rectangleSelectionStyle(view, event) : null);\n}\nconst keys = {\n    Alt: [18, e => !!e.altKey],\n    Control: [17, e => !!e.ctrlKey],\n    Shift: [16, e => !!e.shiftKey],\n    Meta: [91, e => !!e.metaKey]\n};\nconst showCrosshair = { style: \"cursor: crosshair\" };\n/**\nReturns an extension that turns the pointer cursor into a\ncrosshair when a given modifier key, defaulting to Alt, is held\ndown. Can serve as a visual hint that rectangular selection is\ngoing to happen when paired with\n[`rectangularSelection`](https://codemirror.net/6/docs/ref/#view.rectangularSelection).\n*/\nfunction crosshairCursor(options = {}) {\n    let [code, getter] = keys[options.key || \"Alt\"];\n    let plugin = ViewPlugin.fromClass(class {\n        constructor(view) {\n            this.view = view;\n            this.isDown = false;\n        }\n        set(isDown) {\n            if (this.isDown != isDown) {\n                this.isDown = isDown;\n                this.view.update([]);\n            }\n        }\n    }, {\n        eventObservers: {\n            keydown(e) {\n                this.set(e.keyCode == code || getter(e));\n            },\n            keyup(e) {\n                if (e.keyCode == code || !getter(e))\n                    this.set(false);\n            },\n            mousemove(e) {\n                this.set(getter(e));\n            }\n        }\n    });\n    return [\n        plugin,\n        EditorView.contentAttributes.of(view => { var _a; return ((_a = view.plugin(plugin)) === null || _a === void 0 ? void 0 : _a.isDown) ? showCrosshair : null; })\n    ];\n}\n\nconst Outside = \"-10000px\";\nclass TooltipViewManager {\n    constructor(view, facet, createTooltipView, removeTooltipView) {\n        this.facet = facet;\n        this.createTooltipView = createTooltipView;\n        this.removeTooltipView = removeTooltipView;\n        this.input = view.state.facet(facet);\n        this.tooltips = this.input.filter(t => t);\n        let prev = null;\n        this.tooltipViews = this.tooltips.map(t => prev = createTooltipView(t, prev));\n    }\n    update(update, above) {\n        var _a;\n        let input = update.state.facet(this.facet);\n        let tooltips = input.filter(x => x);\n        if (input === this.input) {\n            for (let t of this.tooltipViews)\n                if (t.update)\n                    t.update(update);\n            return false;\n        }\n        let tooltipViews = [], newAbove = above ? [] : null;\n        for (let i = 0; i < tooltips.length; i++) {\n            let tip = tooltips[i], known = -1;\n            if (!tip)\n                continue;\n            for (let i = 0; i < this.tooltips.length; i++) {\n                let other = this.tooltips[i];\n                if (other && other.create == tip.create)\n                    known = i;\n            }\n            if (known < 0) {\n                tooltipViews[i] = this.createTooltipView(tip, i ? tooltipViews[i - 1] : null);\n                if (newAbove)\n                    newAbove[i] = !!tip.above;\n            }\n            else {\n                let tooltipView = tooltipViews[i] = this.tooltipViews[known];\n                if (newAbove)\n                    newAbove[i] = above[known];\n                if (tooltipView.update)\n                    tooltipView.update(update);\n            }\n        }\n        for (let t of this.tooltipViews)\n            if (tooltipViews.indexOf(t) < 0) {\n                this.removeTooltipView(t);\n                (_a = t.destroy) === null || _a === void 0 ? void 0 : _a.call(t);\n            }\n        if (above) {\n            newAbove.forEach((val, i) => above[i] = val);\n            above.length = newAbove.length;\n        }\n        this.input = input;\n        this.tooltips = tooltips;\n        this.tooltipViews = tooltipViews;\n        return true;\n    }\n}\n/**\nCreates an extension that configures tooltip behavior.\n*/\nfunction tooltips(config = {}) {\n    return tooltipConfig.of(config);\n}\nfunction windowSpace(view) {\n    let { win } = view;\n    return { top: 0, left: 0, bottom: win.innerHeight, right: win.innerWidth };\n}\nconst tooltipConfig = /*@__PURE__*/Facet.define({\n    combine: values => {\n        var _a, _b, _c;\n        return ({\n            position: browser.ios ? \"absolute\" : ((_a = values.find(conf => conf.position)) === null || _a === void 0 ? void 0 : _a.position) || \"fixed\",\n            parent: ((_b = values.find(conf => conf.parent)) === null || _b === void 0 ? void 0 : _b.parent) || null,\n            tooltipSpace: ((_c = values.find(conf => conf.tooltipSpace)) === null || _c === void 0 ? void 0 : _c.tooltipSpace) || windowSpace,\n        });\n    }\n});\nconst knownHeight = /*@__PURE__*/new WeakMap();\nconst tooltipPlugin = /*@__PURE__*/ViewPlugin.fromClass(class {\n    constructor(view) {\n        this.view = view;\n        this.above = [];\n        this.inView = true;\n        this.madeAbsolute = false;\n        this.lastTransaction = 0;\n        this.measureTimeout = -1;\n        let config = view.state.facet(tooltipConfig);\n        this.position = config.position;\n        this.parent = config.parent;\n        this.classes = view.themeClasses;\n        this.createContainer();\n        this.measureReq = { read: this.readMeasure.bind(this), write: this.writeMeasure.bind(this), key: this };\n        this.resizeObserver = typeof ResizeObserver == \"function\" ? new ResizeObserver(() => this.measureSoon()) : null;\n        this.manager = new TooltipViewManager(view, showTooltip, (t, p) => this.createTooltip(t, p), t => {\n            if (this.resizeObserver)\n                this.resizeObserver.unobserve(t.dom);\n            t.dom.remove();\n        });\n        this.above = this.manager.tooltips.map(t => !!t.above);\n        this.intersectionObserver = typeof IntersectionObserver == \"function\" ? new IntersectionObserver(entries => {\n            if (Date.now() > this.lastTransaction - 50 &&\n                entries.length > 0 && entries[entries.length - 1].intersectionRatio < 1)\n                this.measureSoon();\n        }, { threshold: [1] }) : null;\n        this.observeIntersection();\n        view.win.addEventListener(\"resize\", this.measureSoon = this.measureSoon.bind(this));\n        this.maybeMeasure();\n    }\n    createContainer() {\n        if (this.parent) {\n            this.container = document.createElement(\"div\");\n            this.container.style.position = \"relative\";\n            this.container.className = this.view.themeClasses;\n            this.parent.appendChild(this.container);\n        }\n        else {\n            this.container = this.view.dom;\n        }\n    }\n    observeIntersection() {\n        if (this.intersectionObserver) {\n            this.intersectionObserver.disconnect();\n            for (let tooltip of this.manager.tooltipViews)\n                this.intersectionObserver.observe(tooltip.dom);\n        }\n    }\n    measureSoon() {\n        if (this.measureTimeout < 0)\n            this.measureTimeout = setTimeout(() => {\n                this.measureTimeout = -1;\n                this.maybeMeasure();\n            }, 50);\n    }\n    update(update) {\n        if (update.transactions.length)\n            this.lastTransaction = Date.now();\n        let updated = this.manager.update(update, this.above);\n        if (updated)\n            this.observeIntersection();\n        let shouldMeasure = updated || update.geometryChanged;\n        let newConfig = update.state.facet(tooltipConfig);\n        if (newConfig.position != this.position && !this.madeAbsolute) {\n            this.position = newConfig.position;\n            for (let t of this.manager.tooltipViews)\n                t.dom.style.position = this.position;\n            shouldMeasure = true;\n        }\n        if (newConfig.parent != this.parent) {\n            if (this.parent)\n                this.container.remove();\n            this.parent = newConfig.parent;\n            this.createContainer();\n            for (let t of this.manager.tooltipViews)\n                this.container.appendChild(t.dom);\n            shouldMeasure = true;\n        }\n        else if (this.parent && this.view.themeClasses != this.classes) {\n            this.classes = this.container.className = this.view.themeClasses;\n        }\n        if (shouldMeasure)\n            this.maybeMeasure();\n    }\n    createTooltip(tooltip, prev) {\n        let tooltipView = tooltip.create(this.view);\n        let before = prev ? prev.dom : null;\n        tooltipView.dom.classList.add(\"cm-tooltip\");\n        if (tooltip.arrow && !tooltipView.dom.querySelector(\".cm-tooltip > .cm-tooltip-arrow\")) {\n            let arrow = document.createElement(\"div\");\n            arrow.className = \"cm-tooltip-arrow\";\n            tooltipView.dom.appendChild(arrow);\n        }\n        tooltipView.dom.style.position = this.position;\n        tooltipView.dom.style.top = Outside;\n        tooltipView.dom.style.left = \"0px\";\n        this.container.insertBefore(tooltipView.dom, before);\n        if (tooltipView.mount)\n            tooltipView.mount(this.view);\n        if (this.resizeObserver)\n            this.resizeObserver.observe(tooltipView.dom);\n        return tooltipView;\n    }\n    destroy() {\n        var _a, _b, _c;\n        this.view.win.removeEventListener(\"resize\", this.measureSoon);\n        for (let tooltipView of this.manager.tooltipViews) {\n            tooltipView.dom.remove();\n            (_a = tooltipView.destroy) === null || _a === void 0 ? void 0 : _a.call(tooltipView);\n        }\n        if (this.parent)\n            this.container.remove();\n        (_b = this.resizeObserver) === null || _b === void 0 ? void 0 : _b.disconnect();\n        (_c = this.intersectionObserver) === null || _c === void 0 ? void 0 : _c.disconnect();\n        clearTimeout(this.measureTimeout);\n    }\n    readMeasure() {\n        let scaleX = 1, scaleY = 1, makeAbsolute = false;\n        if (this.position == \"fixed\" && this.manager.tooltipViews.length) {\n            let { dom } = this.manager.tooltipViews[0];\n            if (browser.gecko) {\n                // Firefox sets the element's `offsetParent` to the\n                // transformed element when a transform interferes with fixed\n                // positioning.\n                makeAbsolute = dom.offsetParent != this.container.ownerDocument.body;\n            }\n            else if (dom.style.top == Outside && dom.style.left == \"0px\") {\n                // On other browsers, we have to awkwardly try and use other\n                // information to detect a transform.\n                let rect = dom.getBoundingClientRect();\n                makeAbsolute = Math.abs(rect.top + 10000) > 1 || Math.abs(rect.left) > 1;\n            }\n        }\n        if (makeAbsolute || this.position == \"absolute\") {\n            if (this.parent) {\n                let rect = this.parent.getBoundingClientRect();\n                if (rect.width && rect.height) {\n                    scaleX = rect.width / this.parent.offsetWidth;\n                    scaleY = rect.height / this.parent.offsetHeight;\n                }\n            }\n            else {\n                ({ scaleX, scaleY } = this.view.viewState);\n            }\n        }\n        let visible = this.view.scrollDOM.getBoundingClientRect(), margins = getScrollMargins(this.view);\n        return {\n            visible: {\n                left: visible.left + margins.left, top: visible.top + margins.top,\n                right: visible.right - margins.right, bottom: visible.bottom - margins.bottom\n            },\n            parent: this.parent ? this.container.getBoundingClientRect() : this.view.dom.getBoundingClientRect(),\n            pos: this.manager.tooltips.map((t, i) => {\n                let tv = this.manager.tooltipViews[i];\n                return tv.getCoords ? tv.getCoords(t.pos) : this.view.coordsAtPos(t.pos);\n            }),\n            size: this.manager.tooltipViews.map(({ dom }) => dom.getBoundingClientRect()),\n            space: this.view.state.facet(tooltipConfig).tooltipSpace(this.view),\n            scaleX, scaleY, makeAbsolute\n        };\n    }\n    writeMeasure(measured) {\n        var _a;\n        if (measured.makeAbsolute) {\n            this.madeAbsolute = true;\n            this.position = \"absolute\";\n            for (let t of this.manager.tooltipViews)\n                t.dom.style.position = \"absolute\";\n        }\n        let { visible, space, scaleX, scaleY } = measured;\n        let others = [];\n        for (let i = 0; i < this.manager.tooltips.length; i++) {\n            let tooltip = this.manager.tooltips[i], tView = this.manager.tooltipViews[i], { dom } = tView;\n            let pos = measured.pos[i], size = measured.size[i];\n            // Hide tooltips that are outside of the editor.\n            if (!pos || tooltip.clip !== false && (pos.bottom <= Math.max(visible.top, space.top) ||\n                pos.top >= Math.min(visible.bottom, space.bottom) ||\n                pos.right < Math.max(visible.left, space.left) - .1 ||\n                pos.left > Math.min(visible.right, space.right) + .1)) {\n                dom.style.top = Outside;\n                continue;\n            }\n            let arrow = tooltip.arrow ? tView.dom.querySelector(\".cm-tooltip-arrow\") : null;\n            let arrowHeight = arrow ? 7 /* Arrow.Size */ : 0;\n            let width = size.right - size.left, height = (_a = knownHeight.get(tView)) !== null && _a !== void 0 ? _a : size.bottom - size.top;\n            let offset = tView.offset || noOffset, ltr = this.view.textDirection == Direction.LTR;\n            let left = size.width > space.right - space.left\n                ? (ltr ? space.left : space.right - size.width)\n                : ltr ? Math.max(space.left, Math.min(pos.left - (arrow ? 14 /* Arrow.Offset */ : 0) + offset.x, space.right - width))\n                    : Math.min(Math.max(space.left, pos.left - width + (arrow ? 14 /* Arrow.Offset */ : 0) - offset.x), space.right - width);\n            let above = this.above[i];\n            if (!tooltip.strictSide && (above\n                ? pos.top - height - arrowHeight - offset.y < space.top\n                : pos.bottom + height + arrowHeight + offset.y > space.bottom) &&\n                above == (space.bottom - pos.bottom > pos.top - space.top))\n                above = this.above[i] = !above;\n            let spaceVert = (above ? pos.top - space.top : space.bottom - pos.bottom) - arrowHeight;\n            if (spaceVert < height && tView.resize !== false) {\n                if (spaceVert < this.view.defaultLineHeight) {\n                    dom.style.top = Outside;\n                    continue;\n                }\n                knownHeight.set(tView, height);\n                dom.style.height = (height = spaceVert) / scaleY + \"px\";\n            }\n            else if (dom.style.height) {\n                dom.style.height = \"\";\n            }\n            let top = above ? pos.top - height - arrowHeight - offset.y : pos.bottom + arrowHeight + offset.y;\n            let right = left + width;\n            if (tView.overlap !== true)\n                for (let r of others)\n                    if (r.left < right && r.right > left && r.top < top + height && r.bottom > top)\n                        top = above ? r.top - height - 2 - arrowHeight : r.bottom + arrowHeight + 2;\n            if (this.position == \"absolute\") {\n                dom.style.top = (top - measured.parent.top) / scaleY + \"px\";\n                dom.style.left = (left - measured.parent.left) / scaleX + \"px\";\n            }\n            else {\n                dom.style.top = top / scaleY + \"px\";\n                dom.style.left = left / scaleX + \"px\";\n            }\n            if (arrow) {\n                let arrowLeft = pos.left + (ltr ? offset.x : -offset.x) - (left + 14 /* Arrow.Offset */ - 7 /* Arrow.Size */);\n                arrow.style.left = arrowLeft / scaleX + \"px\";\n            }\n            if (tView.overlap !== true)\n                others.push({ left, top, right, bottom: top + height });\n            dom.classList.toggle(\"cm-tooltip-above\", above);\n            dom.classList.toggle(\"cm-tooltip-below\", !above);\n            if (tView.positioned)\n                tView.positioned(measured.space);\n        }\n    }\n    maybeMeasure() {\n        if (this.manager.tooltips.length) {\n            if (this.view.inView)\n                this.view.requestMeasure(this.measureReq);\n            if (this.inView != this.view.inView) {\n                this.inView = this.view.inView;\n                if (!this.inView)\n                    for (let tv of this.manager.tooltipViews)\n                        tv.dom.style.top = Outside;\n            }\n        }\n    }\n}, {\n    eventObservers: {\n        scroll() { this.maybeMeasure(); }\n    }\n});\nconst baseTheme = /*@__PURE__*/EditorView.baseTheme({\n    \".cm-tooltip\": {\n        zIndex: 500,\n        boxSizing: \"border-box\"\n    },\n    \"&light .cm-tooltip\": {\n        border: \"1px solid #bbb\",\n        backgroundColor: \"#f5f5f5\"\n    },\n    \"&light .cm-tooltip-section:not(:first-child)\": {\n        borderTop: \"1px solid #bbb\",\n    },\n    \"&dark .cm-tooltip\": {\n        backgroundColor: \"#333338\",\n        color: \"white\"\n    },\n    \".cm-tooltip-arrow\": {\n        height: `${7 /* Arrow.Size */}px`,\n        width: `${7 /* Arrow.Size */ * 2}px`,\n        position: \"absolute\",\n        zIndex: -1,\n        overflow: \"hidden\",\n        \"&:before, &:after\": {\n            content: \"''\",\n            position: \"absolute\",\n            width: 0,\n            height: 0,\n            borderLeft: `${7 /* Arrow.Size */}px solid transparent`,\n            borderRight: `${7 /* Arrow.Size */}px solid transparent`,\n        },\n        \".cm-tooltip-above &\": {\n            bottom: `-${7 /* Arrow.Size */}px`,\n            \"&:before\": {\n                borderTop: `${7 /* Arrow.Size */}px solid #bbb`,\n            },\n            \"&:after\": {\n                borderTop: `${7 /* Arrow.Size */}px solid #f5f5f5`,\n                bottom: \"1px\"\n            }\n        },\n        \".cm-tooltip-below &\": {\n            top: `-${7 /* Arrow.Size */}px`,\n            \"&:before\": {\n                borderBottom: `${7 /* Arrow.Size */}px solid #bbb`,\n            },\n            \"&:after\": {\n                borderBottom: `${7 /* Arrow.Size */}px solid #f5f5f5`,\n                top: \"1px\"\n            }\n        },\n    },\n    \"&dark .cm-tooltip .cm-tooltip-arrow\": {\n        \"&:before\": {\n            borderTopColor: \"#333338\",\n            borderBottomColor: \"#333338\"\n        },\n        \"&:after\": {\n            borderTopColor: \"transparent\",\n            borderBottomColor: \"transparent\"\n        }\n    }\n});\nconst noOffset = { x: 0, y: 0 };\n/**\nFacet to which an extension can add a value to show a tooltip.\n*/\nconst showTooltip = /*@__PURE__*/Facet.define({\n    enables: [tooltipPlugin, baseTheme]\n});\nconst showHoverTooltip = /*@__PURE__*/Facet.define({\n    combine: inputs => inputs.reduce((a, i) => a.concat(i), [])\n});\nclass HoverTooltipHost {\n    // Needs to be static so that host tooltip instances always match\n    static create(view) {\n        return new HoverTooltipHost(view);\n    }\n    constructor(view) {\n        this.view = view;\n        this.mounted = false;\n        this.dom = document.createElement(\"div\");\n        this.dom.classList.add(\"cm-tooltip-hover\");\n        this.manager = new TooltipViewManager(view, showHoverTooltip, (t, p) => this.createHostedView(t, p), t => t.dom.remove());\n    }\n    createHostedView(tooltip, prev) {\n        let hostedView = tooltip.create(this.view);\n        hostedView.dom.classList.add(\"cm-tooltip-section\");\n        this.dom.insertBefore(hostedView.dom, prev ? prev.dom.nextSibling : this.dom.firstChild);\n        if (this.mounted && hostedView.mount)\n            hostedView.mount(this.view);\n        return hostedView;\n    }\n    mount(view) {\n        for (let hostedView of this.manager.tooltipViews) {\n            if (hostedView.mount)\n                hostedView.mount(view);\n        }\n        this.mounted = true;\n    }\n    positioned(space) {\n        for (let hostedView of this.manager.tooltipViews) {\n            if (hostedView.positioned)\n                hostedView.positioned(space);\n        }\n    }\n    update(update) {\n        this.manager.update(update);\n    }\n    destroy() {\n        var _a;\n        for (let t of this.manager.tooltipViews)\n            (_a = t.destroy) === null || _a === void 0 ? void 0 : _a.call(t);\n    }\n    passProp(name) {\n        let value = undefined;\n        for (let view of this.manager.tooltipViews) {\n            let given = view[name];\n            if (given !== undefined) {\n                if (value === undefined)\n                    value = given;\n                else if (value !== given)\n                    return undefined;\n            }\n        }\n        return value;\n    }\n    get offset() { return this.passProp(\"offset\"); }\n    get getCoords() { return this.passProp(\"getCoords\"); }\n    get overlap() { return this.passProp(\"overlap\"); }\n    get resize() { return this.passProp(\"resize\"); }\n}\nconst showHoverTooltipHost = /*@__PURE__*/showTooltip.compute([showHoverTooltip], state => {\n    let tooltips = state.facet(showHoverTooltip);\n    if (tooltips.length === 0)\n        return null;\n    return {\n        pos: Math.min(...tooltips.map(t => t.pos)),\n        end: Math.max(...tooltips.map(t => { var _a; return (_a = t.end) !== null && _a !== void 0 ? _a : t.pos; })),\n        create: HoverTooltipHost.create,\n        above: tooltips[0].above,\n        arrow: tooltips.some(t => t.arrow),\n    };\n});\nclass HoverPlugin {\n    constructor(view, source, field, setHover, hoverTime) {\n        this.view = view;\n        this.source = source;\n        this.field = field;\n        this.setHover = setHover;\n        this.hoverTime = hoverTime;\n        this.hoverTimeout = -1;\n        this.restartTimeout = -1;\n        this.pending = null;\n        this.lastMove = { x: 0, y: 0, target: view.dom, time: 0 };\n        this.checkHover = this.checkHover.bind(this);\n        view.dom.addEventListener(\"mouseleave\", this.mouseleave = this.mouseleave.bind(this));\n        view.dom.addEventListener(\"mousemove\", this.mousemove = this.mousemove.bind(this));\n    }\n    update() {\n        if (this.pending) {\n            this.pending = null;\n            clearTimeout(this.restartTimeout);\n            this.restartTimeout = setTimeout(() => this.startHover(), 20);\n        }\n    }\n    get active() {\n        return this.view.state.field(this.field);\n    }\n    checkHover() {\n        this.hoverTimeout = -1;\n        if (this.active.length)\n            return;\n        let hovered = Date.now() - this.lastMove.time;\n        if (hovered < this.hoverTime)\n            this.hoverTimeout = setTimeout(this.checkHover, this.hoverTime - hovered);\n        else\n            this.startHover();\n    }\n    startHover() {\n        clearTimeout(this.restartTimeout);\n        let { view, lastMove } = this;\n        let desc = view.docView.nearest(lastMove.target);\n        if (!desc)\n            return;\n        let pos, side = 1;\n        if (desc instanceof WidgetView) {\n            pos = desc.posAtStart;\n        }\n        else {\n            pos = view.posAtCoords(lastMove);\n            if (pos == null)\n                return;\n            let posCoords = view.coordsAtPos(pos);\n            if (!posCoords ||\n                lastMove.y < posCoords.top || lastMove.y > posCoords.bottom ||\n                lastMove.x < posCoords.left - view.defaultCharacterWidth ||\n                lastMove.x > posCoords.right + view.defaultCharacterWidth)\n                return;\n            let bidi = view.bidiSpans(view.state.doc.lineAt(pos)).find(s => s.from <= pos && s.to >= pos);\n            let rtl = bidi && bidi.dir == Direction.RTL ? -1 : 1;\n            side = (lastMove.x < posCoords.left ? -rtl : rtl);\n        }\n        let open = this.source(view, pos, side);\n        if (open === null || open === void 0 ? void 0 : open.then) {\n            let pending = this.pending = { pos };\n            open.then(result => {\n                if (this.pending == pending) {\n                    this.pending = null;\n                    if (result && !(Array.isArray(result) && !result.length))\n                        view.dispatch({ effects: this.setHover.of(Array.isArray(result) ? result : [result]) });\n                }\n            }, e => logException(view.state, e, \"hover tooltip\"));\n        }\n        else if (open && !(Array.isArray(open) && !open.length)) {\n            view.dispatch({ effects: this.setHover.of(Array.isArray(open) ? open : [open]) });\n        }\n    }\n    get tooltip() {\n        let plugin = this.view.plugin(tooltipPlugin);\n        let index = plugin ? plugin.manager.tooltips.findIndex(t => t.create == HoverTooltipHost.create) : -1;\n        return index > -1 ? plugin.manager.tooltipViews[index] : null;\n    }\n    mousemove(event) {\n        var _a, _b;\n        this.lastMove = { x: event.clientX, y: event.clientY, target: event.target, time: Date.now() };\n        if (this.hoverTimeout < 0)\n            this.hoverTimeout = setTimeout(this.checkHover, this.hoverTime);\n        let { active, tooltip } = this;\n        if (active.length && tooltip && !isInTooltip(tooltip.dom, event) || this.pending) {\n            let { pos } = active[0] || this.pending, end = (_b = (_a = active[0]) === null || _a === void 0 ? void 0 : _a.end) !== null && _b !== void 0 ? _b : pos;\n            if ((pos == end ? this.view.posAtCoords(this.lastMove) != pos\n                : !isOverRange(this.view, pos, end, event.clientX, event.clientY))) {\n                this.view.dispatch({ effects: this.setHover.of([]) });\n                this.pending = null;\n            }\n        }\n    }\n    mouseleave(event) {\n        clearTimeout(this.hoverTimeout);\n        this.hoverTimeout = -1;\n        let { active } = this;\n        if (active.length) {\n            let { tooltip } = this;\n            let inTooltip = tooltip && tooltip.dom.contains(event.relatedTarget);\n            if (!inTooltip)\n                this.view.dispatch({ effects: this.setHover.of([]) });\n            else\n                this.watchTooltipLeave(tooltip.dom);\n        }\n    }\n    watchTooltipLeave(tooltip) {\n        let watch = (event) => {\n            tooltip.removeEventListener(\"mouseleave\", watch);\n            if (this.active.length && !this.view.dom.contains(event.relatedTarget))\n                this.view.dispatch({ effects: this.setHover.of([]) });\n        };\n        tooltip.addEventListener(\"mouseleave\", watch);\n    }\n    destroy() {\n        clearTimeout(this.hoverTimeout);\n        this.view.dom.removeEventListener(\"mouseleave\", this.mouseleave);\n        this.view.dom.removeEventListener(\"mousemove\", this.mousemove);\n    }\n}\nconst tooltipMargin = 4;\nfunction isInTooltip(tooltip, event) {\n    let { left, right, top, bottom } = tooltip.getBoundingClientRect(), arrow;\n    if (arrow = tooltip.querySelector(\".cm-tooltip-arrow\")) {\n        let arrowRect = arrow.getBoundingClientRect();\n        top = Math.min(arrowRect.top, top);\n        bottom = Math.max(arrowRect.bottom, bottom);\n    }\n    return event.clientX >= left - tooltipMargin && event.clientX <= right + tooltipMargin &&\n        event.clientY >= top - tooltipMargin && event.clientY <= bottom + tooltipMargin;\n}\nfunction isOverRange(view, from, to, x, y, margin) {\n    let rect = view.scrollDOM.getBoundingClientRect();\n    let docBottom = view.documentTop + view.documentPadding.top + view.contentHeight;\n    if (rect.left > x || rect.right < x || rect.top > y || Math.min(rect.bottom, docBottom) < y)\n        return false;\n    let pos = view.posAtCoords({ x, y }, false);\n    return pos >= from && pos <= to;\n}\n/**\nSet up a hover tooltip, which shows up when the pointer hovers\nover ranges of text. The callback is called when the mouse hovers\nover the document text. It should, if there is a tooltip\nassociated with position `pos`, return the tooltip description\n(either directly or in a promise). The `side` argument indicates\non which side of the position the pointer is—it will be -1 if the\npointer is before the position, 1 if after the position.\n\nNote that all hover tooltips are hosted within a single tooltip\ncontainer element. This allows multiple tooltips over the same\nrange to be \"merged\" together without overlapping.\n\nThe return value is a valid [editor extension](https://codemirror.net/6/docs/ref/#state.Extension)\nbut also provides an `active` property holding a state field that\ncan be used to read the currently active tooltips produced by this\nextension.\n*/\nfunction hoverTooltip(source, options = {}) {\n    let setHover = StateEffect.define();\n    let hoverState = StateField.define({\n        create() { return []; },\n        update(value, tr) {\n            if (value.length) {\n                if (options.hideOnChange && (tr.docChanged || tr.selection))\n                    value = [];\n                else if (options.hideOn)\n                    value = value.filter(v => !options.hideOn(tr, v));\n                if (tr.docChanged) {\n                    let mapped = [];\n                    for (let tooltip of value) {\n                        let newPos = tr.changes.mapPos(tooltip.pos, -1, MapMode.TrackDel);\n                        if (newPos != null) {\n                            let copy = Object.assign(Object.create(null), tooltip);\n                            copy.pos = newPos;\n                            if (copy.end != null)\n                                copy.end = tr.changes.mapPos(copy.end);\n                            mapped.push(copy);\n                        }\n                    }\n                    value = mapped;\n                }\n            }\n            for (let effect of tr.effects) {\n                if (effect.is(setHover))\n                    value = effect.value;\n                if (effect.is(closeHoverTooltipEffect))\n                    value = [];\n            }\n            return value;\n        },\n        provide: f => showHoverTooltip.from(f)\n    });\n    return {\n        active: hoverState,\n        extension: [\n            hoverState,\n            ViewPlugin.define(view => new HoverPlugin(view, source, hoverState, setHover, options.hoverTime || 300 /* Hover.Time */)),\n            showHoverTooltipHost\n        ]\n    };\n}\n/**\nGet the active tooltip view for a given tooltip, if available.\n*/\nfunction getTooltip(view, tooltip) {\n    let plugin = view.plugin(tooltipPlugin);\n    if (!plugin)\n        return null;\n    let found = plugin.manager.tooltips.indexOf(tooltip);\n    return found < 0 ? null : plugin.manager.tooltipViews[found];\n}\n/**\nReturns true if any hover tooltips are currently active.\n*/\nfunction hasHoverTooltips(state) {\n    return state.facet(showHoverTooltip).some(x => x);\n}\nconst closeHoverTooltipEffect = /*@__PURE__*/StateEffect.define();\n/**\nTransaction effect that closes all hover tooltips.\n*/\nconst closeHoverTooltips = /*@__PURE__*/closeHoverTooltipEffect.of(null);\n/**\nTell the tooltip extension to recompute the position of the active\ntooltips. This can be useful when something happens (such as a\nre-positioning or CSS change affecting the editor) that could\ninvalidate the existing tooltip positions.\n*/\nfunction repositionTooltips(view) {\n    let plugin = view.plugin(tooltipPlugin);\n    if (plugin)\n        plugin.maybeMeasure();\n}\n\nconst panelConfig = /*@__PURE__*/Facet.define({\n    combine(configs) {\n        let topContainer, bottomContainer;\n        for (let c of configs) {\n            topContainer = topContainer || c.topContainer;\n            bottomContainer = bottomContainer || c.bottomContainer;\n        }\n        return { topContainer, bottomContainer };\n    }\n});\n/**\nConfigures the panel-managing extension.\n*/\nfunction panels(config) {\n    return config ? [panelConfig.of(config)] : [];\n}\n/**\nGet the active panel created by the given constructor, if any.\nThis can be useful when you need access to your panels' DOM\nstructure.\n*/\nfunction getPanel(view, panel) {\n    let plugin = view.plugin(panelPlugin);\n    let index = plugin ? plugin.specs.indexOf(panel) : -1;\n    return index > -1 ? plugin.panels[index] : null;\n}\nconst panelPlugin = /*@__PURE__*/ViewPlugin.fromClass(class {\n    constructor(view) {\n        this.input = view.state.facet(showPanel);\n        this.specs = this.input.filter(s => s);\n        this.panels = this.specs.map(spec => spec(view));\n        let conf = view.state.facet(panelConfig);\n        this.top = new PanelGroup(view, true, conf.topContainer);\n        this.bottom = new PanelGroup(view, false, conf.bottomContainer);\n        this.top.sync(this.panels.filter(p => p.top));\n        this.bottom.sync(this.panels.filter(p => !p.top));\n        for (let p of this.panels) {\n            p.dom.classList.add(\"cm-panel\");\n            if (p.mount)\n                p.mount();\n        }\n    }\n    update(update) {\n        let conf = update.state.facet(panelConfig);\n        if (this.top.container != conf.topContainer) {\n            this.top.sync([]);\n            this.top = new PanelGroup(update.view, true, conf.topContainer);\n        }\n        if (this.bottom.container != conf.bottomContainer) {\n            this.bottom.sync([]);\n            this.bottom = new PanelGroup(update.view, false, conf.bottomContainer);\n        }\n        this.top.syncClasses();\n        this.bottom.syncClasses();\n        let input = update.state.facet(showPanel);\n        if (input != this.input) {\n            let specs = input.filter(x => x);\n            let panels = [], top = [], bottom = [], mount = [];\n            for (let spec of specs) {\n                let known = this.specs.indexOf(spec), panel;\n                if (known < 0) {\n                    panel = spec(update.view);\n                    mount.push(panel);\n                }\n                else {\n                    panel = this.panels[known];\n                    if (panel.update)\n                        panel.update(update);\n                }\n                panels.push(panel);\n                (panel.top ? top : bottom).push(panel);\n            }\n            this.specs = specs;\n            this.panels = panels;\n            this.top.sync(top);\n            this.bottom.sync(bottom);\n            for (let p of mount) {\n                p.dom.classList.add(\"cm-panel\");\n                if (p.mount)\n                    p.mount();\n            }\n        }\n        else {\n            for (let p of this.panels)\n                if (p.update)\n                    p.update(update);\n        }\n    }\n    destroy() {\n        this.top.sync([]);\n        this.bottom.sync([]);\n    }\n}, {\n    provide: plugin => EditorView.scrollMargins.of(view => {\n        let value = view.plugin(plugin);\n        return value && { top: value.top.scrollMargin(), bottom: value.bottom.scrollMargin() };\n    })\n});\nclass PanelGroup {\n    constructor(view, top, container) {\n        this.view = view;\n        this.top = top;\n        this.container = container;\n        this.dom = undefined;\n        this.classes = \"\";\n        this.panels = [];\n        this.syncClasses();\n    }\n    sync(panels) {\n        for (let p of this.panels)\n            if (p.destroy && panels.indexOf(p) < 0)\n                p.destroy();\n        this.panels = panels;\n        this.syncDOM();\n    }\n    syncDOM() {\n        if (this.panels.length == 0) {\n            if (this.dom) {\n                this.dom.remove();\n                this.dom = undefined;\n            }\n            return;\n        }\n        if (!this.dom) {\n            this.dom = document.createElement(\"div\");\n            this.dom.className = this.top ? \"cm-panels cm-panels-top\" : \"cm-panels cm-panels-bottom\";\n            this.dom.style[this.top ? \"top\" : \"bottom\"] = \"0\";\n            let parent = this.container || this.view.dom;\n            parent.insertBefore(this.dom, this.top ? parent.firstChild : null);\n        }\n        let curDOM = this.dom.firstChild;\n        for (let panel of this.panels) {\n            if (panel.dom.parentNode == this.dom) {\n                while (curDOM != panel.dom)\n                    curDOM = rm(curDOM);\n                curDOM = curDOM.nextSibling;\n            }\n            else {\n                this.dom.insertBefore(panel.dom, curDOM);\n            }\n        }\n        while (curDOM)\n            curDOM = rm(curDOM);\n    }\n    scrollMargin() {\n        return !this.dom || this.container ? 0\n            : Math.max(0, this.top ?\n                this.dom.getBoundingClientRect().bottom - Math.max(0, this.view.scrollDOM.getBoundingClientRect().top) :\n                Math.min(innerHeight, this.view.scrollDOM.getBoundingClientRect().bottom) - this.dom.getBoundingClientRect().top);\n    }\n    syncClasses() {\n        if (!this.container || this.classes == this.view.themeClasses)\n            return;\n        for (let cls of this.classes.split(\" \"))\n            if (cls)\n                this.container.classList.remove(cls);\n        for (let cls of (this.classes = this.view.themeClasses).split(\" \"))\n            if (cls)\n                this.container.classList.add(cls);\n    }\n}\nfunction rm(node) {\n    let next = node.nextSibling;\n    node.remove();\n    return next;\n}\n/**\nOpening a panel is done by providing a constructor function for\nthe panel through this facet. (The panel is closed again when its\nconstructor is no longer provided.) Values of `null` are ignored.\n*/\nconst showPanel = /*@__PURE__*/Facet.define({\n    enables: panelPlugin\n});\n\n/**\nA gutter marker represents a bit of information attached to a line\nin a specific gutter. Your own custom markers have to extend this\nclass.\n*/\nclass GutterMarker extends RangeValue {\n    /**\n    @internal\n    */\n    compare(other) {\n        return this == other || this.constructor == other.constructor && this.eq(other);\n    }\n    /**\n    Compare this marker to another marker of the same type.\n    */\n    eq(other) { return false; }\n    /**\n    Called if the marker has a `toDOM` method and its representation\n    was removed from a gutter.\n    */\n    destroy(dom) { }\n}\nGutterMarker.prototype.elementClass = \"\";\nGutterMarker.prototype.toDOM = undefined;\nGutterMarker.prototype.mapMode = MapMode.TrackBefore;\nGutterMarker.prototype.startSide = GutterMarker.prototype.endSide = -1;\nGutterMarker.prototype.point = true;\n/**\nFacet used to add a class to all gutter elements for a given line.\nMarkers given to this facet should _only_ define an\n[`elementclass`](https://codemirror.net/6/docs/ref/#view.GutterMarker.elementClass), not a\n[`toDOM`](https://codemirror.net/6/docs/ref/#view.GutterMarker.toDOM) (or the marker will appear\nin all gutters for the line).\n*/\nconst gutterLineClass = /*@__PURE__*/Facet.define();\n/**\nFacet used to add a class to all gutter elements next to a widget.\nShould not provide widgets with a `toDOM` method.\n*/\nconst gutterWidgetClass = /*@__PURE__*/Facet.define();\nconst defaults = {\n    class: \"\",\n    renderEmptyElements: false,\n    elementStyle: \"\",\n    markers: () => RangeSet.empty,\n    lineMarker: () => null,\n    widgetMarker: () => null,\n    lineMarkerChange: null,\n    initialSpacer: null,\n    updateSpacer: null,\n    domEventHandlers: {}\n};\nconst activeGutters = /*@__PURE__*/Facet.define();\n/**\nDefine an editor gutter. The order in which the gutters appear is\ndetermined by their extension priority.\n*/\nfunction gutter(config) {\n    return [gutters(), activeGutters.of(Object.assign(Object.assign({}, defaults), config))];\n}\nconst unfixGutters = /*@__PURE__*/Facet.define({\n    combine: values => values.some(x => x)\n});\n/**\nThe gutter-drawing plugin is automatically enabled when you add a\ngutter, but you can use this function to explicitly configure it.\n\nUnless `fixed` is explicitly set to `false`, the gutters are\nfixed, meaning they don't scroll along with the content\nhorizontally (except on Internet Explorer, which doesn't support\nCSS [`position:\nsticky`](https://developer.mozilla.org/en-US/docs/Web/CSS/position#sticky)).\n*/\nfunction gutters(config) {\n    let result = [\n        gutterView,\n    ];\n    if (config && config.fixed === false)\n        result.push(unfixGutters.of(true));\n    return result;\n}\nconst gutterView = /*@__PURE__*/ViewPlugin.fromClass(class {\n    constructor(view) {\n        this.view = view;\n        this.prevViewport = view.viewport;\n        this.dom = document.createElement(\"div\");\n        this.dom.className = \"cm-gutters\";\n        this.dom.setAttribute(\"aria-hidden\", \"true\");\n        this.dom.style.minHeight = (this.view.contentHeight / this.view.scaleY) + \"px\";\n        this.gutters = view.state.facet(activeGutters).map(conf => new SingleGutterView(view, conf));\n        for (let gutter of this.gutters)\n            this.dom.appendChild(gutter.dom);\n        this.fixed = !view.state.facet(unfixGutters);\n        if (this.fixed) {\n            // FIXME IE11 fallback, which doesn't support position: sticky,\n            // by using position: relative + event handlers that realign the\n            // gutter (or just force fixed=false on IE11?)\n            this.dom.style.position = \"sticky\";\n        }\n        this.syncGutters(false);\n        view.scrollDOM.insertBefore(this.dom, view.contentDOM);\n    }\n    update(update) {\n        if (this.updateGutters(update)) {\n            // Detach during sync when the viewport changed significantly\n            // (such as during scrolling), since for large updates that is\n            // faster.\n            let vpA = this.prevViewport, vpB = update.view.viewport;\n            let vpOverlap = Math.min(vpA.to, vpB.to) - Math.max(vpA.from, vpB.from);\n            this.syncGutters(vpOverlap < (vpB.to - vpB.from) * 0.8);\n        }\n        if (update.geometryChanged) {\n            this.dom.style.minHeight = (this.view.contentHeight / this.view.scaleY) + \"px\";\n        }\n        if (this.view.state.facet(unfixGutters) != !this.fixed) {\n            this.fixed = !this.fixed;\n            this.dom.style.position = this.fixed ? \"sticky\" : \"\";\n        }\n        this.prevViewport = update.view.viewport;\n    }\n    syncGutters(detach) {\n        let after = this.dom.nextSibling;\n        if (detach)\n            this.dom.remove();\n        let lineClasses = RangeSet.iter(this.view.state.facet(gutterLineClass), this.view.viewport.from);\n        let classSet = [];\n        let contexts = this.gutters.map(gutter => new UpdateContext(gutter, this.view.viewport, -this.view.documentPadding.top));\n        for (let line of this.view.viewportLineBlocks) {\n            if (classSet.length)\n                classSet = [];\n            if (Array.isArray(line.type)) {\n                let first = true;\n                for (let b of line.type) {\n                    if (b.type == BlockType.Text && first) {\n                        advanceCursor(lineClasses, classSet, b.from);\n                        for (let cx of contexts)\n                            cx.line(this.view, b, classSet);\n                        first = false;\n                    }\n                    else if (b.widget) {\n                        for (let cx of contexts)\n                            cx.widget(this.view, b);\n                    }\n                }\n            }\n            else if (line.type == BlockType.Text) {\n                advanceCursor(lineClasses, classSet, line.from);\n                for (let cx of contexts)\n                    cx.line(this.view, line, classSet);\n            }\n            else if (line.widget) {\n                for (let cx of contexts)\n                    cx.widget(this.view, line);\n            }\n        }\n        for (let cx of contexts)\n            cx.finish();\n        if (detach)\n            this.view.scrollDOM.insertBefore(this.dom, after);\n    }\n    updateGutters(update) {\n        let prev = update.startState.facet(activeGutters), cur = update.state.facet(activeGutters);\n        let change = update.docChanged || update.heightChanged || update.viewportChanged ||\n            !RangeSet.eq(update.startState.facet(gutterLineClass), update.state.facet(gutterLineClass), update.view.viewport.from, update.view.viewport.to);\n        if (prev == cur) {\n            for (let gutter of this.gutters)\n                if (gutter.update(update))\n                    change = true;\n        }\n        else {\n            change = true;\n            let gutters = [];\n            for (let conf of cur) {\n                let known = prev.indexOf(conf);\n                if (known < 0) {\n                    gutters.push(new SingleGutterView(this.view, conf));\n                }\n                else {\n                    this.gutters[known].update(update);\n                    gutters.push(this.gutters[known]);\n                }\n            }\n            for (let g of this.gutters) {\n                g.dom.remove();\n                if (gutters.indexOf(g) < 0)\n                    g.destroy();\n            }\n            for (let g of gutters)\n                this.dom.appendChild(g.dom);\n            this.gutters = gutters;\n        }\n        return change;\n    }\n    destroy() {\n        for (let view of this.gutters)\n            view.destroy();\n        this.dom.remove();\n    }\n}, {\n    provide: plugin => EditorView.scrollMargins.of(view => {\n        let value = view.plugin(plugin);\n        if (!value || value.gutters.length == 0 || !value.fixed)\n            return null;\n        return view.textDirection == Direction.LTR\n            ? { left: value.dom.offsetWidth * view.scaleX }\n            : { right: value.dom.offsetWidth * view.scaleX };\n    })\n});\nfunction asArray(val) { return (Array.isArray(val) ? val : [val]); }\nfunction advanceCursor(cursor, collect, pos) {\n    while (cursor.value && cursor.from <= pos) {\n        if (cursor.from == pos)\n            collect.push(cursor.value);\n        cursor.next();\n    }\n}\nclass UpdateContext {\n    constructor(gutter, viewport, height) {\n        this.gutter = gutter;\n        this.height = height;\n        this.i = 0;\n        this.cursor = RangeSet.iter(gutter.markers, viewport.from);\n    }\n    addElement(view, block, markers) {\n        let { gutter } = this, above = (block.top - this.height) / view.scaleY, height = block.height / view.scaleY;\n        if (this.i == gutter.elements.length) {\n            let newElt = new GutterElement(view, height, above, markers);\n            gutter.elements.push(newElt);\n            gutter.dom.appendChild(newElt.dom);\n        }\n        else {\n            gutter.elements[this.i].update(view, height, above, markers);\n        }\n        this.height = block.bottom;\n        this.i++;\n    }\n    line(view, line, extraMarkers) {\n        let localMarkers = [];\n        advanceCursor(this.cursor, localMarkers, line.from);\n        if (extraMarkers.length)\n            localMarkers = localMarkers.concat(extraMarkers);\n        let forLine = this.gutter.config.lineMarker(view, line, localMarkers);\n        if (forLine)\n            localMarkers.unshift(forLine);\n        let gutter = this.gutter;\n        if (localMarkers.length == 0 && !gutter.config.renderEmptyElements)\n            return;\n        this.addElement(view, line, localMarkers);\n    }\n    widget(view, block) {\n        let marker = this.gutter.config.widgetMarker(view, block.widget, block), markers = marker ? [marker] : null;\n        for (let cls of view.state.facet(gutterWidgetClass)) {\n            let marker = cls(view, block.widget, block);\n            if (marker)\n                (markers || (markers = [])).push(marker);\n        }\n        if (markers)\n            this.addElement(view, block, markers);\n    }\n    finish() {\n        let gutter = this.gutter;\n        while (gutter.elements.length > this.i) {\n            let last = gutter.elements.pop();\n            gutter.dom.removeChild(last.dom);\n            last.destroy();\n        }\n    }\n}\nclass SingleGutterView {\n    constructor(view, config) {\n        this.view = view;\n        this.config = config;\n        this.elements = [];\n        this.spacer = null;\n        this.dom = document.createElement(\"div\");\n        this.dom.className = \"cm-gutter\" + (this.config.class ? \" \" + this.config.class : \"\");\n        for (let prop in config.domEventHandlers) {\n            this.dom.addEventListener(prop, (event) => {\n                let target = event.target, y;\n                if (target != this.dom && this.dom.contains(target)) {\n                    while (target.parentNode != this.dom)\n                        target = target.parentNode;\n                    let rect = target.getBoundingClientRect();\n                    y = (rect.top + rect.bottom) / 2;\n                }\n                else {\n                    y = event.clientY;\n                }\n                let line = view.lineBlockAtHeight(y - view.documentTop);\n                if (config.domEventHandlers[prop](view, line, event))\n                    event.preventDefault();\n            });\n        }\n        this.markers = asArray(config.markers(view));\n        if (config.initialSpacer) {\n            this.spacer = new GutterElement(view, 0, 0, [config.initialSpacer(view)]);\n            this.dom.appendChild(this.spacer.dom);\n            this.spacer.dom.style.cssText += \"visibility: hidden; pointer-events: none\";\n        }\n    }\n    update(update) {\n        let prevMarkers = this.markers;\n        this.markers = asArray(this.config.markers(update.view));\n        if (this.spacer && this.config.updateSpacer) {\n            let updated = this.config.updateSpacer(this.spacer.markers[0], update);\n            if (updated != this.spacer.markers[0])\n                this.spacer.update(update.view, 0, 0, [updated]);\n        }\n        let vp = update.view.viewport;\n        return !RangeSet.eq(this.markers, prevMarkers, vp.from, vp.to) ||\n            (this.config.lineMarkerChange ? this.config.lineMarkerChange(update) : false);\n    }\n    destroy() {\n        for (let elt of this.elements)\n            elt.destroy();\n    }\n}\nclass GutterElement {\n    constructor(view, height, above, markers) {\n        this.height = -1;\n        this.above = 0;\n        this.markers = [];\n        this.dom = document.createElement(\"div\");\n        this.dom.className = \"cm-gutterElement\";\n        this.update(view, height, above, markers);\n    }\n    update(view, height, above, markers) {\n        if (this.height != height) {\n            this.height = height;\n            this.dom.style.height = height + \"px\";\n        }\n        if (this.above != above)\n            this.dom.style.marginTop = (this.above = above) ? above + \"px\" : \"\";\n        if (!sameMarkers(this.markers, markers))\n            this.setMarkers(view, markers);\n    }\n    setMarkers(view, markers) {\n        let cls = \"cm-gutterElement\", domPos = this.dom.firstChild;\n        for (let iNew = 0, iOld = 0;;) {\n            let skipTo = iOld, marker = iNew < markers.length ? markers[iNew++] : null, matched = false;\n            if (marker) {\n                let c = marker.elementClass;\n                if (c)\n                    cls += \" \" + c;\n                for (let i = iOld; i < this.markers.length; i++)\n                    if (this.markers[i].compare(marker)) {\n                        skipTo = i;\n                        matched = true;\n                        break;\n                    }\n            }\n            else {\n                skipTo = this.markers.length;\n            }\n            while (iOld < skipTo) {\n                let next = this.markers[iOld++];\n                if (next.toDOM) {\n                    next.destroy(domPos);\n                    let after = domPos.nextSibling;\n                    domPos.remove();\n                    domPos = after;\n                }\n            }\n            if (!marker)\n                break;\n            if (marker.toDOM) {\n                if (matched)\n                    domPos = domPos.nextSibling;\n                else\n                    this.dom.insertBefore(marker.toDOM(view), domPos);\n            }\n            if (matched)\n                iOld++;\n        }\n        this.dom.className = cls;\n        this.markers = markers;\n    }\n    destroy() {\n        this.setMarkers(null, []); // First argument not used unless creating markers\n    }\n}\nfunction sameMarkers(a, b) {\n    if (a.length != b.length)\n        return false;\n    for (let i = 0; i < a.length; i++)\n        if (!a[i].compare(b[i]))\n            return false;\n    return true;\n}\n/**\nFacet used to provide markers to the line number gutter.\n*/\nconst lineNumberMarkers = /*@__PURE__*/Facet.define();\n/**\nFacet used to create markers in the line number gutter next to widgets.\n*/\nconst lineNumberWidgetMarker = /*@__PURE__*/Facet.define();\nconst lineNumberConfig = /*@__PURE__*/Facet.define({\n    combine(values) {\n        return combineConfig(values, { formatNumber: String, domEventHandlers: {} }, {\n            domEventHandlers(a, b) {\n                let result = Object.assign({}, a);\n                for (let event in b) {\n                    let exists = result[event], add = b[event];\n                    result[event] = exists ? (view, line, event) => exists(view, line, event) || add(view, line, event) : add;\n                }\n                return result;\n            }\n        });\n    }\n});\nclass NumberMarker extends GutterMarker {\n    constructor(number) {\n        super();\n        this.number = number;\n    }\n    eq(other) { return this.number == other.number; }\n    toDOM() { return document.createTextNode(this.number); }\n}\nfunction formatNumber(view, number) {\n    return view.state.facet(lineNumberConfig).formatNumber(number, view.state);\n}\nconst lineNumberGutter = /*@__PURE__*/activeGutters.compute([lineNumberConfig], state => ({\n    class: \"cm-lineNumbers\",\n    renderEmptyElements: false,\n    markers(view) { return view.state.facet(lineNumberMarkers); },\n    lineMarker(view, line, others) {\n        if (others.some(m => m.toDOM))\n            return null;\n        return new NumberMarker(formatNumber(view, view.state.doc.lineAt(line.from).number));\n    },\n    widgetMarker: (view, widget, block) => {\n        for (let m of view.state.facet(lineNumberWidgetMarker)) {\n            let result = m(view, widget, block);\n            if (result)\n                return result;\n        }\n        return null;\n    },\n    lineMarkerChange: update => update.startState.facet(lineNumberConfig) != update.state.facet(lineNumberConfig),\n    initialSpacer(view) {\n        return new NumberMarker(formatNumber(view, maxLineNumber(view.state.doc.lines)));\n    },\n    updateSpacer(spacer, update) {\n        let max = formatNumber(update.view, maxLineNumber(update.view.state.doc.lines));\n        return max == spacer.number ? spacer : new NumberMarker(max);\n    },\n    domEventHandlers: state.facet(lineNumberConfig).domEventHandlers\n}));\n/**\nCreate a line number gutter extension.\n*/\nfunction lineNumbers(config = {}) {\n    return [\n        lineNumberConfig.of(config),\n        gutters(),\n        lineNumberGutter\n    ];\n}\nfunction maxLineNumber(lines) {\n    let last = 9;\n    while (last < lines)\n        last = last * 10 + 9;\n    return last;\n}\nconst activeLineGutterMarker = /*@__PURE__*/new class extends GutterMarker {\n    constructor() {\n        super(...arguments);\n        this.elementClass = \"cm-activeLineGutter\";\n    }\n};\nconst activeLineGutterHighlighter = /*@__PURE__*/gutterLineClass.compute([\"selection\"], state => {\n    let marks = [], last = -1;\n    for (let range of state.selection.ranges) {\n        let linePos = state.doc.lineAt(range.head).from;\n        if (linePos > last) {\n            last = linePos;\n            marks.push(activeLineGutterMarker.range(linePos));\n        }\n    }\n    return RangeSet.of(marks);\n});\n/**\nReturns an extension that adds a `cm-activeLineGutter` class to\nall gutter elements on the [active\nline](https://codemirror.net/6/docs/ref/#view.highlightActiveLine).\n*/\nfunction highlightActiveLineGutter() {\n    return activeLineGutterHighlighter;\n}\n\nfunction matcher(decorator) {\n    return ViewPlugin.define(view => ({\n        decorations: decorator.createDeco(view),\n        update(u) {\n            this.decorations = decorator.updateDeco(u, this.decorations);\n        },\n    }), {\n        decorations: v => v.decorations\n    });\n}\nconst tabDeco = /*@__PURE__*/Decoration.mark({ class: \"cm-highlightTab\" });\nconst spaceDeco = /*@__PURE__*/Decoration.mark({ class: \"cm-highlightSpace\" });\nconst whitespaceHighlighter = /*@__PURE__*/matcher(/*@__PURE__*/new MatchDecorator({\n    regexp: /\\t| /g,\n    decoration: match => match[0] == \"\\t\" ? tabDeco : spaceDeco,\n    boundary: /\\S/,\n}));\n/**\nReturns an extension that highlights whitespace, adding a\n`cm-highlightSpace` class to stretches of spaces, and a\n`cm-highlightTab` class to individual tab characters. By default,\nthe former are shown as faint dots, and the latter as arrows.\n*/\nfunction highlightWhitespace() {\n    return whitespaceHighlighter;\n}\nconst trailingHighlighter = /*@__PURE__*/matcher(/*@__PURE__*/new MatchDecorator({\n    regexp: /\\s+$/g,\n    decoration: /*@__PURE__*/Decoration.mark({ class: \"cm-trailingSpace\" }),\n    boundary: /\\S/,\n}));\n/**\nReturns an extension that adds a `cm-trailingSpace` class to all\ntrailing whitespace.\n*/\nfunction highlightTrailingWhitespace() {\n    return trailingHighlighter;\n}\n\n/**\n@internal\n*/\nconst __test = { HeightMap, HeightOracle, MeasuredHeights, QueryType, ChangedRange, computeOrder,\n    moveVisually, clearHeightChangeFlag, getHeightChangeFlag: () => heightChangeFlag };\n\nexport { BidiSpan, BlockInfo, BlockType, Decoration, Direction, EditorView, GutterMarker, MatchDecorator, RectangleMarker, ViewPlugin, ViewUpdate, WidgetType, __test, closeHoverTooltips, crosshairCursor, drawSelection, dropCursor, getDrawSelectionConfig, getPanel, getTooltip, gutter, gutterLineClass, gutterWidgetClass, gutters, hasHoverTooltips, highlightActiveLine, highlightActiveLineGutter, highlightSpecialChars, highlightTrailingWhitespace, highlightWhitespace, hoverTooltip, keymap, layer, lineNumberMarkers, lineNumberWidgetMarker, lineNumbers, logException, panels, placeholder, rectangularSelection, repositionTooltips, runScopeHandlers, scrollPastEnd, showPanel, showTooltip, tooltips };\n"],"names":[],"sourceRoot":""}