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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: Strange hangs when visiting .el and .html files
Date: Wed, 07 Feb 2024 21:33:43 +0200
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To: "Eric S. Raymond" <esr@thyrsus.com>
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> From: "Eric S. Raymond" <esr@thyrsus.com>
> Date: Wed,  7 Feb 2024 14:28:29 -0500 (EST)
> 
> About a week ago I noticed that my Emacs was hanging when I attempted
> to visit my init.el file.  Then I saw the same hang when visiting an
> HTML file.  Other modes, such as text and C modes, are working normally.
> 
> I have seen this problem under a released 1.27 and a repository head
> version (30.0.50 build 11) built about 20 minutes ago.

What's "1.27"? did you mean Emacs 27.1? or something else?

If it's indeed Emacs 27, then the first suspect is something you've
changed on your system recently that is not Emacs, but maybe some
library or driver.

> Running emacs with -q does not evade the hang.
> 
> OS is Pop!_OS 22.04 LTS, not that I think that matters.
> 
> Any suggestions on how to troubleshoot this?  

Attach the debugger to a hung Emacs and produce a backtrace from all
the threads?

Btw, it is netter to discuss this on the bug tracker, so please use
"M-x report-emacs-bug" to submit a report with all the details.

Thanks.