I've released a new version of my Tidy plugin for rails. This one add support for rails 2.0 files extensions. The changes were submitted by Danial Pearce. See there for more informations.

As a side note, I ordered the book Advanced Rails Recipes and discovered that my plugin is mentioned in the "Automatically Validate HTML" recipe. I still haven't got the time to read all the book, but as my plugin is in it, I can only recommend it ;).