Your comments

I wish. Sorry, I should have been more specific. The Notepad++ plugin works for Notepad++. Since Sublime 2 has a rich plugin API, I was thinking that either the plugin could be ported from C++ to python, or at minimum the concepts used in the Notepad++ plugin could be applied to a solution for Sublime Text. I downloaded the source and am intending to play with it a bit.

There is a Notepad++ plugin which provides this functionality. The undo privileges get a little confusing, but it does work. Source available here: NppDocShare