[17:24:15] <addshore>	 if I have a revid in code, what is the best way to perform an undo of said revision now?
[17:28:10] <James_F>	 addshore: action=edit with undo=<revid>, I think?
[17:28:31] <addshore>	 just call the api?, lame, but yeh, maybe
[17:28:43] <James_F>	 Welcome to MW's darkest corner.
[17:29:06] <Reedy>	 screenscrape
[17:41:53] <addshore>	 Reedy: shh
[18:56:11] <anomie>	 addshore: From inside MediaWiki? Before MCR it was a little easier since there was just the one Content object, so you could have used ContentHandler::getUndoContent(). Right now you'd have to do like McrUndoAction::getNewRevision(). What I had started on in https://gerrit.wikimedia.org/r/c/mediawiki/core/+/460436 has EditController::fillUndoEdit() as a public interface.