Pattern to my making these things: every time I hit a feature that I miss from TextMate I write a plugin.

This one was actually interesting, in that it involves "hooking" an existing keybind, which there's no clear functionality for. So I'm abusing keybind contexts and event listeners to fake it.

I've taken to doing the same thing, though I just did my first one the other day:

https://github.com/Hovertruck/sublime-pyflakes