Not disagreeing with your request, but an alternative approach could be to flag the vandalized wiki post, so that moderators / admins can not only revert to the last correct version, but also do something about the vandalizer.
Not disagreeing with your request, but an alternative approach could be to flag the vandalized wiki post, so that moderators / admins can not only revert to the last correct version, but also do something about the vandalizer.