GPQAPP

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// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: https://codemirror.net/LICENSE
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(function(mod) {
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  if (typeof exports == "object" && typeof module == "object") // CommonJS
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    mod(require("../../lib/codemirror"));
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  else if (typeof define == "function" && define.amd) // AMD
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    define(["../../lib/codemirror"], mod);
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  else // Plain browser env
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    mod(CodeMirror);
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})(function(CodeMirror) {
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"use strict";
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CodeMirror.registerHelper("fold", "markdown", function(cm, start) {
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  var maxDepth = 100;
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  function isHeader(lineNo) {
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    var tokentype = cm.getTokenTypeAt(CodeMirror.Pos(lineNo, 0));
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    return tokentype && /\bheader\b/.test(tokentype);
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  }
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  function headerLevel(lineNo, line, nextLine) {
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    var match = line && line.match(/^#+/);
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    if (match && isHeader(lineNo)) return match[0].length;
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    match = nextLine && nextLine.match(/^[=\-]+\s*$/);
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    if (match && isHeader(lineNo + 1)) return nextLine[0] == "=" ? 1 : 2;
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    return maxDepth;
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  }
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  var firstLine = cm.getLine(start.line), nextLine = cm.getLine(start.line + 1);
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  var level = headerLevel(start.line, firstLine, nextLine);
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  if (level === maxDepth) return undefined;
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  var lastLineNo = cm.lastLine();
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  var end = start.line, nextNextLine = cm.getLine(end + 2);
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  while (end < lastLineNo) {
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    if (headerLevel(end + 1, nextLine, nextNextLine) <= level) break;
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    ++end;
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    nextLine = nextNextLine;
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    nextNextLine = cm.getLine(end + 2);
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  }
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  return {
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    from: CodeMirror.Pos(start.line, firstLine.length),
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    to: CodeMirror.Pos(end, cm.getLine(end).length)
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  };
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});
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});
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