bug#59384: 29.0.50; Visiting files in Emacs Git pops up "unsafe variable" prompt

[Eli Zaretskii <eliz@gnu.org>]

> From: Juri Linkov <juri@linkov.net>
> Cc: 59384@debbugs.gnu.org
> Date: Sat, 19 Nov 2022 20:49:50 +0200
> 
> >       vc-git-annotate-switches : "-w"
> >       bug-reference-url-format : "https://debbugs.gnu.org/%s"
> >       diff-add-log-use-relative-names : t
> >     * vc-prepare-patches-separately : nil
> >       c-file-style : "GNU"
> >       c-noise-macro-names : ("INLINE" "NO_INLINE" "ATTRIBUTE_NO_SANITIZE_UNDEFINED" "UNINIT" "CALLBACK" "ALIGN_STACK")
> >       electric-quote-comment : nil
> >       electric-quote-string : nil
> >       indent-tabs-mode : t
> >       mode : bug-reference-prog
> >
> > The problem here AFAIU is that vc-prepare-patches-separately and its
> > 'safep' property is not known to Emacs until vc.el is loaded.
> >
> > One way of fixing this would be to autoload the defcustom of this
> > variable, but AFAIR this is sometimes frowned upon?
> 
> Is there a standard solution already worked out for existing
> variables like `vc-git-annotate-switches'?

Maybe it is, but if so, I'm not aware of it.

Stefan, any advice?