[Mediawiki-l] become user as admin

[Florian Effenberger]

Hello,

for a wiki I administer, it's sometimes desirable for admins to work
as another user, either by

- "becoming" the user without having to manually login (sudo-like behaviour),
- or manually changing the username in the page history on newly
created or modified pages

so it looks like another user edited the page rather than the admin.

I wasn't able to find an extension that does so. Is that possible with
MediaWiki?

Thanks
Florian