From mboxrd@z Thu Jan  1 00:00:00 1970
From: rlane@club.cc.cmu.edu (Rich Lane)
Date: Thu, 10 Sep 2009 18:45:20 -0400
Subject: [sup-talk] How hard would a universal undo be?
In-Reply-To: <1252517083-sup-58@yoom.home.cworth.org>
References: <1252517083-sup-58@yoom.home.cworth.org>
Message-ID: <1252599828-sup-7368@zyrg.net>

Excerpts from Carl Worth's message of Wed Sep 09 13:32:30 -0400 2009:
> Would it be a small change to move the undo keybinding to somewhere
> more universal?

No :(

> As a first cut, I'd be happy if it just undid the changes to the
> index, even without undoing any interface changes. That is, if my
> previous command was archive-thread-and-view-next-thread, it would be
> OK if it just undid the archiving part. Bonus points if it also undoes
> the view-next part, but I can imagine that being more work.

I know I sound a bit like a broken record here, but immediate
label changes will solve this problem. Then, the undo system would just
need to keep a global stack of (msgid, previous_labels). I'm just hoping
somebody will volunteer for this - it will be a big patch.