plugin=diff is not implemented.
http://yellow.ribbon.to/~tuotehhou/index.php?%2BASP.NET%20MVC%2B%E3%82%AB%E3%82%B9%E3%82%BF%E3%83%A0%E6%A4%9C%E8%A8%BC%E5%B1%9E%E6%80%A7%E3%81%AE%E4%BD%9C%E6%88%90
plugin=diff is not implemented.