I was messing around with the theme bits on my site in Notepad (yes, I know) when I decided to look for an open source solution.
jEdit is open source, it highlights the code and indents it properly. For my purposes, it seems to work well, since all I’m doing is tweaking wordpress themes.
Makes me want to muck about on the site a bit more.
I guess that’s my way of saying that things are going to break around here.