GNU bug report logs - #77942
31.0.50; replace-region-contents gets stuck

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Message #8 received at 77942 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Gerd Möllmann <gerd.moellmann <at> gmail.com>,
 Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 77942 <at> debbugs.gnu.org
Subject: Re: bug#77942: 31.0.50; replace-region-contents gets stuck
Date: Sun, 20 Apr 2025 19:06:44 +0300

> From: Gerd Möllmann <gerd.moellmann <at> gmail.com>
> Date: Sun, 20 Apr 2025 17:28:51 +0200
> 
> To reproduce with emacs -Q, define this function
> 
> (defun elb-replace-region-contents-entry ()
>   (with-temp-buffer
>     (let ((step (apply #'concat (make-list 2000 "🙂été👶🏿 "))))
>       (dotimes (_ (/ 10000000 (length step)))
>         (insert step)))
> 
>     (dotimes (_ 100)
>       (let* ((a (1+ (random (point-max))))
> 	     (b (1+ (random (point-max))))
> 	     (beg (min a b))
> 	     (end (max a b)))
> 	(replace-region-contents beg end "🙂été👶🏿 🙂été👶🏿 ")))))
> 
> and evaluate
> 
>   /elb-replace-region-contents-entry)
> 
> This enters an (infinite?) loop that cannot be interrupted with C-g in
> the GUI version. If started with -nw, C-g eventually crashes Emacs,
> without printing anything on stdout or stderr.

Adding Stefan.

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