GNU bug report logs - #77609
How to add multiple functions to one hook with :hook in use-package?

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Reuben Thomas <rrt <at> sc3d.org>, John Wiegley <johnw <at> gnu.org>
Cc: 77609 <at> debbugs.gnu.org
Subject: bug#77609: How to add multiple functions to one hook with :hook in use-package?
Date: Sun, 13 Apr 2025 11:49:15 +0300

> Date: Mon, 7 Apr 2025 14:46:59 +0100
> From:  Reuben Thomas via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> 
> On Mon, 7 Apr 2025 at 14:43, Reuben Thomas <rrt <at> sc3d.org> wrote:
> 
>  I tried other things, and searching online, and even looking at the source code for use-package, but I
>  can't work it out.
> 
> I had another look at the source code, and found this:
> 
>            (concat label " a <symbol> or (<symbol or list of symbols> . <symbol or function>)"
>                    " or list of these")
> 
> It's unfortunate that this is part of an error message, as I've never seen the error, but I think this explains the
> syntax, and indeed says that you can't add multiple functions to a single hook with one :hook line; in other
> words, it would be necessary to write something like:
> 
> (use-package foo-mode
>    :hook
>    ((foo-mode . function-a)
>    (foo-mode . function-b)))

John, can you please help in understanding how the documentation could
be clarified in this regard?

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