GNU bug report logs - #66187
read-file-name unexpected behavior when MUSTMATCH is a function

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Message #110 received at 66187 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: michael_heerdegen <at> web.de, philipk <at> posteo.net, 66187 <at> debbugs.gnu.org,
 Drew Adams <drew.adams <at> oracle.com>, joseph <at> breatheoutbreathe.in
Subject: Re: [External] : bug#66187: read-file-name unexpected behavior when
 MUSTMATCH is a function
Date: Fri, 06 Oct 2023 09:05:49 -0400

>> then how about not breaking the
>> behavior of REQUIRE-MATCH at all, and instead
>> just add a separate argument for what a function
>> value of REQUIRE-MATCH does in 29.1?
>
> That is definitely not a change suitable for Emacs 29 at this point.

Not only that but that would be hideous over-engineering (so not
suitable for `master` either).
The use of a function for `require-match` is already extremely rare
(we've had `require-match` for more than 30 years and it's only last
year that we decided it was worth generalizing it to a function), and
the new proposed behavior is strictly more general than the
29.1 behavior.


        Stefan

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