[TxMt] Feature suggestion, unless it is already here

I caught this on a thread in reddit I think. Watch the animated image: http://code-and-hacks.blogspot.com/2009/06/stealing-from-padre-for-vim.html

Something like this would be very cool. I know I can do it with find and replace, but having a command that was aware of the scope you are in, and only altering the variables you want within that scope, and narrowed to that specific variable would be super nice.

Not something I would use all the time, but I have a habit of slamming out some pretty off the top of my head code. To be able to go back, and give nice logical well thought names, and have those changes not break my code, would be a great addition.

Anyone cone close to this in TextMate today?