def checkout(self, filename, revision):
# FIXME: RCS should do keyword substitution, not CVS!
cvs = CVS(join(dirname(__file__), 'data', 'greek'), None)
cvs.localid = 'OpenBSD'
f = RCSFile(join(dirname(__file__), 'data', filename))
c = f.change(revision)
blob = f.blob(revision)
return cvs.expand_keywords(blob, c, f, revision)
