Keyboard Shortcut to Close Tags For Other Languages (outside of HTML)

I'm coming from Smultron, which is a nice, light-weight text editor, but I need more power so I've moved to Coda. Smultron spoiled me in the ability to have a key command to close out tags no matter what type of file I was editing (PHP, XHTML, XML, etc). I'd love to see this implemented in a future release of Coda.