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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: unwind-protect within while-no-input
Date: Sun, 26 May 2024 07:55:45 +0300
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To: Stefan Monnier <monnier@iro.umontreal.ca>
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> Date: Sat, 25 May 2024 22:47:07 -0400
> From:  Stefan Monnier via "Emacs development discussions." <emacs-devel@gnu.org>
> 
> Maybe a "cheaper" answer for your specific problem is to make sure
> that once `while-no-input` has started a non-local exit (which it does
> with `throw`, IIRC), we mark "this while-no-input" as being done
> so it won't cause a nested exit while we process the unwind form of the
> original exit.
> 
> E.g. with a patch like the one below?  Would it fix your case?

Please don't install anything like this until the emacs-30 release
branch is cut.