was wondering if TextMate could throw a warning if the key-equivalent you're assigning to a command will wipe out a pre-existing key-equivalent. From what I've observed, if you add a key-equivalent [that already exists] to a command then the command works --as expected-- in that key-equivalent, silently overriding what was there before. Hopefully not something too difficult? I guess that would be helpful for macros too.
Kumar