I work up early today, so I made a few more changes to Typo. In addition to the earlier threaded comments patch, I’ve added:

• Sort category lists by name. By default, Typo displays category lists in a more or less random order. This patch causes them to be sorted by name.
• Enhanced text filtering. This adds support for SmartyPants-style filtering with RubyPants, fixes a cross-site-scripting vulnerability, adds the ability to stack filters, and splits comment formating away from article formatting, so you can use different defaults for each.

All three patches are against revision 262 from the Typo SVN repository. For convenience, I’ve generated a combined patch with all three sets of changes, plus a couple other minor fixes.