+1 from me as well.
After svn and cvs I suspect Mercurial is not too far behind git as the most popular version control system.
@Jason:
Oh yeah, its narrow. =) python-dev does not use it very often, I just know it has been used that way before.
I think you are right and that code search is just not needed.
Kudos on the feature. Really handy for the projects (e.g., Python) who moved their entire repository over to svn and subsequently changed a lot of user accounts along the way.