Topic on Extension talk:CategorySortHeaders/Flow

I can't seem to use parser functions of any sort inside the caret symbols... it just interprets things like {{#ucfirst:blah}} as plaintext. Am I missing something, or is this a bug?

Oh, and I'm on MediaWiki 1.17, using the workaround described.

Ah, nevermind. I just realized that {{ucfirst}} doesn't use a "#" mark when being invoked. Anyways, great extension, thanks!