I'm guessing this may be because the new file was
added after r37404,
but the file registering the extension (and providing the revision
number) wasn't changed at that time, which means the most recent
revision of *that file* is still r37404. Special:Version doesn't really
report the most recent revision of the extension as a whole, but that of
the setup file (IIRC).
Indeed. It would be much nicer if it could report the *directories* revision
number. Does SVN have a keyword substitution for this? Does SVN allow
scripts/plugins for this type of thing? That would by quite useful.
-- daniel