GNU bug report logs - #25678
25.1; defcustom type `(file :must-match t)' seems not to work

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From: Mauro Aranda <maurooaranda <at> gmail.com>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: dieter <at> duenenhof-wilhelm.de, 25678 <at> debbugs.gnu.org, Noam Postavsky <npostavs <at> gmail.com>, Drew Adams <drew.adams <at> oracle.com>, tim <at> tim-landscheidt.de
Subject: bug#25678: 25.1; defcustom type `(file :must-match t)' seems not to work
Date: Sun, 30 Aug 2020 12:22:34 -0300

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Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> Mauro Aranda <maurooaranda <at> gmail.com> writes:
>
>> I think it makes sense to expand the impact of :must-match t to
>> Customization buffers, like in the attached patch.
>
> [...]
>
>> +  :match #'(lambda (widget value)
>> +             (or (not (widget-get widget :must-match))
>> +                 (file-exists-p value)))
>
> Makes sense to me.  I've now applied this to Emacs 28 (but I removed the
> #''s before the lambdas first (they're superfluous)).

Noted.  Thanks for taking the trouble!

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