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Proced signals (was: Change in vc-git ls-files-unknown makes emacs hang)


From: Juri Linkov
Subject: Proced signals (was: Change in vc-git ls-files-unknown makes emacs hang)
Date: Sat, 21 Dec 2019 23:51:18 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (x86_64-pc-linux-gnu)

>> So, opinions welcome.
>
> My HO is that we need to understand better which code causes the
> freeze, before we can discuss solutions.
>
> Filipp, please produce a backtrace during the freeze, either by using
> SIGUSR2, as Stefan suggested, or by attaching a debugger, and post the
> backtrace.

BTW, why proced.el doesn't support SIGUSR2?  Is this because
some standard doesn't declare SIGUSR2 as "portable"?



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