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From: Dan Christensen <jdc@uwo.ca>
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Subject: Re: Debugging extremely long IMAP folder exit times
Date: Thu, 25 Jul 2019 16:09:37 -0400
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On Jul 24, 2019, Jason L Tibbitts III <tibbs@math.uh.edu> wrote:

> I think this is another instance of the same issue.  Fortunately the
> count is small enough that it doesn't take all that long to exit the group.

...

> I guess I'll clear the data on that one as well.

If you haven't yet cleared the data, it would be interesting to see if
there are fixes that don't clear the remote marks and flags (even though
you don't seem to have any in this case).

1) Does `M-g' on the group fix the problem?  (I often have to do that on
IMAP groups to make Gnus fully re-read the server info.)

2) What if you `C-k' the group, exit Gnus, restart emacs and gnus, and
then subscribe to the group again?

Dan