(function() {

var modes = ["clike", "css", "javascript"];
for (var i = 0; i < modes.length; ++i)
  CodeMirror.extendMode(modes[i], {blockCommentStart: "/*",
                                   blockCommentEnd: "*/",
                                   blockCommentContinue: " * "});

CodeMirror.commands.newlineAndIndentContinueComment = function(cm) {
  var pos = cm.getCursor(), token = cm.getTokenAt(pos);
  var mode = CodeMirror.innerMode(cm.getMode(), token.state).mode;
  var space;

  if (token.className == "comment" && mode.blockCommentStart) {
    var end = token.string.indexOf(mode.blockCommentEnd);
    var full = cm.getRange({line: pos.line, ch: 0}, {line: pos.line, ch: token.end}), found;
    if (end != -1 && end == token.string.length - mode.blockCommentEnd.length) {
      // Comment ended, don't continue it
    } else if (token.string.indexOf(mode.blockCommentStart) == 0) {
      space = full.slice(0, token.start);
      if (!/^\s*$/.test(space)) {
        space = "";
        for (var i = 0; i < token.start; ++i) space += " ";
      }
    } else if ((found = full.indexOf(mode.blockCommentContinue)) != -1 &&
               found + mode.blockCommentContinue.length > token.start &&
               /^\s*$/.test(full.slice(0, found))) {
      space = full.slice(0, found);
    }
  }

  if (space != null)
    cm.replaceSelection("\n" + space + mode.blockCommentContinue, "end");
  else
    cm.execCommand("newlineAndIndent");
};

})();