I realize there's some kind of workaround to make autocompletion work in a vaguely pleasant way:

http://www.nabble.com/Autocompletion-to17643856.html#a17643856

But is there a more user-friendly option. (I happen to have XCode installed on my machine, but I imagine there are members of the target audience for TextMate who won't.) Are there plans to make autocompletion part of TextMate's core functionality?