Re: davmail hangs *after* retrieving pop email from Exchange server

[Eric Abrahamsen <eric@ericabrahamsen.net>]

Eric S Fraga <e.fraga@ucl.ac.uk> writes:

> On Thursday, 27 May 2021 at 08:40, Eric Abrahamsen wrote:
>> I think the usual thing to do would be M-x toggle-debug-on-quit, then
>> get to the hang, then C-g. You should see a traceback telling you what
>> Emacs was doing when you quit it.
>
> Thank you for this suggestion.  However, I've tried this already (debug
> on error and debug on quit are my first ports of call...) 

I should have known that :)

> and I do not get a backtrace when I hit C-g but simply continues with
> the rest of the email & news retrieval. This does suggest a network
> hang of some sort but I don't understand why/how. These types of
> problems are the most frustrating in gnus (maybe Emacs generally?).

They are frustrating! And my guess is that a `condition-case' somewhere
is handling the `quit' -- all of a sudden this sort of thing is
responsible for like 90% of my Emacs debugging. It's even possible that
it's the same location as Hirotaka Honda has run in to: mail splitting
inside `nnmail-get-new-mail-1'. Do you see anything in *Messages*? How
about with `gnus-verbose-backends' set to 10? Or try stepping thrhough
`nnmail-get-new-mail-1' and see if anything "bad" happens...