For a bundle I'm maintaining, I wanted to be able to easily toggle between having changes written directly to the bundle (so that I can commit them) and having changes written to deltas (so that I can make local customizations that are not committed).

I wrote a command for this: http://henrik.nyh.se/2007/03/24/textmate-command-to-toggle-writing-deltas/

I'm sure others have done similar things before, but I couldn't find anything, so I rolled my own, and thought I'd share.

If the command does something bad or unnecessary, or if you've solved this problem in a better way, please let me (us) know.