I'm trying to make my TextMate behave more or less in the same way as emacs (I understand that Meta-x-u and similar keybindings may become available in the future..)

Until then,  I've created the DefaultKeyBinding.dict file (and It works) but I can't for the life of me find how to issue a "undo" command. 

I really "need" to bind $^- to "undo". 

I also "need" to rebind (rather than unlearn) crtl-s to save and possibly disalble ctrl-x in the process. Can anyone help me with this?

btw. TextMate is great. Bought a license to day.

/rune