Plugin to make links clickable

plugin.css

/* plugin css */

plugin.js

app.plugins.linkify = function(message) {
  // see http://daringfireball.net/2010/07/improved_regex_for_matching_urls
  var re = /\b((?:https?:\/\/|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}\/)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?«»“”‘’]))/gi;
  var parsed = message.replace(re, function(url) {

    // If the text is in a html tag
    // we need to just return it without embedding it
    // we fetch the rest of the string from our match
    // and then check to see if the we reach a > character
    // before a < character
    var rest = _.last(arguments).substring(arguments[arguments.length-2]);
    if (rest.indexOf(">") !== -1 && rest.indexOf(">") < rest.indexOf("<")) {
      return url;
    }

    // turn into a link
    var href = url;
    if (url.indexOf('http') !== 0) {
      href = 'http://' + url;
    }
    return '<a href="' + href + '" target="_blank">' + url + '</a>';
  });
  return parsed;
}

plugin.json

{
  "name": "Linkify",
  "author": "David Petersen",
  "description": "Create embedded links",
  "pluginId": "linkify",
  "settings": {
  }
}