There is a nice little tip over on the Circle Six blog on how to set up the TextMate blogging bundle to use the WordPress 2.2 XMLRPC slug capabilities:

• Easy WP2.2 Slugs with TextMate

The only oddity I found was that Circle Six lists the blogging.rb file in this location:

~/Library/Application Support/TextMate/bundles/Blogging.tmbundle/lib/blogging.rb

On my computer the file was actually located here:

/Applications/TextMate.app/Contents/SharedSupport/Bundles/Blogging.tmbundle/Support/lib/blogging.rb

I’m not exactly sure why the two locations are different. Either way, mine works splendidly after following the tip.