Re: FIXMEs in imap.el and nnimap.el

[Dave Love <fx@gnu.org>]

I'm afraid there's something wrong with my fix, but it seems to be
something like a race condition, and isn't consistently reproducible.
It also goes away when I try to debug it.  I see the old error sometimes
when starting Gnus afresh, and the trace says imap-fetch-safe is called
from nnimap-find-minmax-uid.  It appears that the condition-case in
imap-fetch-safe isn't catching the error thrown by imap-parse-message.  

Now I think about it, I'm more puzzled, and obviously don't understand
the logic.  An error in a process filter should be caught anyway, so I
wonder why the code ever works, though it does some of the time.  Any
ideas?

Setting imap-enable-exchange-bug-workaround globally works, of course,
and it's not clear to me what the problem is with always using the
workaround anyhow.  Are there servers on which it's known to fail or be
noticeably slow?