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bug#63410: 30.0.50; [FR] Optionally allow defcustom to check type for st
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From: |
Eli Zaretskii |
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Subject: |
bug#63410: 30.0.50; [FR] Optionally allow defcustom to check type for standard value |
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Date: |
Wed, 10 May 2023 18:40:19 +0300 |
> Cc: "63410@debbugs.gnu.org" <63410@debbugs.gnu.org>
> Date: Wed, 10 May 2023 22:51:14 +0800
> From: Ruijie Yu via "Bug reports for GNU Emacs,
> the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
>
> My request is that Emacs should (optionally, maybe behind a defcustom,
> or configure, or cli flag, etc.) warn you warn a defcustom's standard
> value does not match its declared type.
Warn you at what time? When defcustom is byte-compiled? when it is
evaluated at run time? when the user says "M-x set-variable"?
something else?
> Since a similar warning is already in place for `setopt', I don't
> think it is farfetched to request `defcustom' to follow suit.
setopt says it when you invoke it. But setopt is designed to be
called as a function at run time, whereas defcustom isn't.