showdownjs/showdown

showdown.subParser('makeMarkdown.links', function (node, options, globals) {
  'use strict';

  var txt = '';
  if (node.hasChildNodes() && node.hasAttribute('href')) {
    var children = node.childNodes,
        childrenLength = children.length;

    // special case for mentions
    // to simplify (and not make stuff really complicated) mentions will only work in this circumstance:
    // <a class="user-mention" href="https://github.com/user">@user</a>
    // that is, if there's a "user-mention" class and option ghMentions is true
    // otherwise is ignored
    var classes = node.getAttribute('class');
    if (options.ghMentions && /(?:^| )user-mention\b/.test(classes)) {
      for (var ii = 0; ii < childrenLength; ++ii) {
        txt += showdown.subParser('makeMarkdown.node')(children[ii], options, globals);
      }

    } else {
      txt = '[';
      for (var i = 0; i < childrenLength; ++i) {
        txt += showdown.subParser('makeMarkdown.node')(children[i], options, globals);
      }
      txt += '](';
      txt += '<' + node.getAttribute('href') + '>';
      if (node.hasAttribute('title')) {
        txt += ' "' + node.getAttribute('title') + '"';
      }
      txt += ')';
    }


  }
  return txt;
});