bug#60987: 30.0.50; Calendar not accepting custom holidays

[Eli Zaretskii <eliz@gnu.org>]

[Please keep the bug address on the CC list.]

> Date: Sat, 21 Jan 2023 15:53:49 +0100
> From: "Emanuele M. Monterosso" <emanuele.monterosso@gmail.com>
> 
> >Please show step by step instructions to reproduce the issue starting
> >from "emacs -Q".  It is hard to look into an issue without such a
> >recipe, as the details are usually important.
> >
>  
> >Thanks.
>  
> Steps to reproduce:
> 
> * emacs -Q -> scratch-buffer
> * Copy this snippet from the EmacsWiki 
> 
> (setq holiday-general-holidays
>       '((holiday-fixed 1 1 "Capodanno")
>         (holiday-fixed 5 1 "1 Maggio")
>         (holiday-fixed 4 25 "Liberazione")
>         (holiday-fixed 6 2 "Festa Repubblica")
> ))
>  
> * C-x C-e to eval the snippet
> * Either open the calendar or M-x holiday-list RET RET RET All and they do not appear at all. However,
> 
> they do appear if you do M-x holiday-list RET RET RET General.

For me they appear both with "All" and with "General" if I invoke
holiday-list.

Also, I don't have commit 8aae5fbaf29ee3d845e2bb40ef728765a2246e35 in
my clone of the Emacs Git repository.  Which Git repository are you
using to build Emacs?