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bug#49682: 27.2.50; accept-process-output within accept-process-output h


From: LdBeth
Subject: bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs
Date: Mon, 06 Nov 2023 14:27:02 -0600
User-agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (Gojō) APEL-LB/10.8 EasyPG/1.0.0 Emacs/29.1 (x86_64-apple-darwin20.6.0) MULE/6.0 (HANACHIRUSATO)

>>>>> In <83a5rq3hna.fsf@gnu.org> 
>>>>>   Eli Zaretskii <eliz@gnu.org> wrote:

ldb> The shr library uses url-queue to asynchronously download images
ldb> and Wanderlust also use `accept-process-output' call to handle
ldb> IMAP.
ldb> 
ldb> For this particular case I used a dirty hack
ldb> 
ldb> (define-advice accept-process-output
ldb>     (:before (&rest _) sync-queue)
ldb>   (when (fboundp 'url-queue-check-progress)
ldb>     (funcall #'url-queue-check-progress)))
ldb> 
ldb> However, could we make `accept-process-output' atomic so the
ldb> timer won't interrupt it? Or there is no reliable method yet to
ldb> make any atomic operations in Emacs yet?

Eli> If a Lisp program wants to avoid timers during the call to
Eli> accept-process-output, could perhaps temporarily bind timer-list
Eli> to nil or something?

Thank you, let Wanderlust maintainers know and figure out
changes needed to fix the problem.

---
ldbeth






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