Gary Kirk wrote:
Revert in Special:Recentchanges?
I think he means something more automatic.
[[Wikipedia:Replies_to_common_objections]]
If someone launches an extensive attack, all offending IP addresses can
be blocked from further editing by the admins. We can develop ad hoc
technical measures to disallow certain edits, or to revert edits that
meet certain criteria (...) In an emergency, we can revert all changes
made since a certain time.
There's maintenance/cleanupSpam.php but it reverts pages linking to a
web. You would need to modify it to revert all edits of an user. Odd it
doesn't exist yet, though.