Earlier quoted context omitted.
IDEs have a high cost (learning curve, complexity, etc) that is not worth the benefit for dynamic languages. I'm not sure what the gaping hole is the op is talking about. Textmate is an awesome editor and it doesn't matter that there hasn't been an update in a while. The only thing I really miss with text mate is good git integration.
Don't get me wrong, I'm not trying to change anyone's mind about TextMate; it does just what a bunch of people want it to. That's awesome! I used it for quite a while. Heck, I still use it for simple editing. Personally, once I tried an IDE with integrated context sensitive help, inline syntax checking, real indenting, etc. TextMate didn't seem to solve the problems that I needed it to solve. It just became a fancy n…
Also, and I've never understood why this is, plugins seem to be much more fragile on the big IDEs than the editors like emacs, vim, and textmate. You'd think they'd break less with all the static typing of java, but in my experience I've had far more problems with them.
I do love the git integration though. That's the one thing I really wish textmate or emacs had.