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   1  function parse()
   2  {
   3      if (text.indexOf('~~') === -1)
   4      {
   5          return;
   6      }
   7  
   8      var m, regexp = /~~[^\x17]+?~~(?!~)/g;
   9      while (m = regexp.exec(text))
  10      {
  11          var match    = m[0],
  12              matchPos = +m['index'],
  13              matchLen = match.length,
  14              endPos   = matchPos + matchLen - 2;
  15  
  16          addTagPair('DEL', matchPos, 2, endPos, 2);
  17          overwrite(matchPos, 2);
  18          overwrite(endPos, 2);
  19      }
  20  }