bug#63311: 30.0.50; [PATCH] smtpmail-send-it split

[Eli Zaretskii]

> From: Manuel Giraud <manuel@ledu-giraud.fr>
> Cc: 63311@debbugs.gnu.org
> Date: Mon, 06 Nov 2023 11:21:23 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> Ok.  But there is still the case where any 'error' call from a thread
> >> will end up in limbo, no?
> >
> > The caller will need to fetch it and display it.
> 
> Yes but how would I do that.  My idea was to left much code unmodified
> (with all 'error' calls in case something goes wrong).  But how the
> 'main-thread' could fetch these errors.

Using thread-last-error, or at least that's what I had in mind.