An alternative to the built-in search/find in TextMate is the Grep in Project command for Textmate. An even better alternative is AckMate. It can be downloaded here. Unzip the file, double click the file, and restart TextMate to fully install. After installing, go “Edit > Find > Search Project with AckMate…”
AckMate searches iteratively so that each match is displayed as it’s found and can even be clicked while searching in the background. The Mac keyboard shortcut is Control-Option-Command F (three adjacent keys to the left of the spacebar)
Ackmate has a specific algorithm to search for files. Mentioned here http://wiki.github.com/protocool/AckMate
You need to add this to ~/.ackrc file to get it to search features as well
–type-add=ruby=.haml,.rake,.feature
–type-set=ignorables=.log,.tmp,.pdf
–noignorables