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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: shell-command-sentinel hook?
Date: Mon, 04 Mar 2024 22:08:12 +0200
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Cc: emacs-devel@gnu.org
To: Christopher Howard <christopher@librehacker.com>
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In-Reply-To: <ZeYMKxOddjQRX8WJ@theoden> (message from Christopher Howard on
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> Date: Mon, 4 Mar 2024 09:00:11 -0900
> From: Christopher Howard <christopher@librehacker.com>
> 
> Hi, I was just wondering if it would be difficult/problematic to patch simple.el to provide some kind of hook so that, when async shell commands complete, users can run arbitrary elisp? I imagine this would get inserted at the end of shell-command-sentinel...?

Why cannot you simply override shell-command-sentinel with your own
function?