GNU bug report logs - #73098
setopt float warning unexpected

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Message #83 received at 73098 <at> debbugs.gnu.org (full text, mbox):

From: Ship Mints <shipmints <at> gmail.com>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: Michael Heerdegen <michael_heerdegen <at> web.de>, Eli Zaretskii <eliz <at> gnu.org>,
 73098 <at> debbugs.gnu.org, Stefan Kangas <stefankangas <at> gmail.com>
Subject: Re: bug#73098: setopt float warning unexpected
Date: Fri, 13 Sep 2024 15:38:28 -0400

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The warning messages can be misleading. e.g., when trying to set
tab-bar-format-tabs-groups to include a simple lambda, it complains about
the wrong thing. It does match the hook type, but does not match the
hard-coded list of options.

   (setopt tab-bar-format
           `(
             tab-bar-format-tabs-groups
             (lambda () " ") ; tab-bar-separator
    ))

 ■  Warning (emacs): Value '(nil tab-bar-format-tabs-groups (lambda nil "
"))' does not match type hook

On Fri, Sep 13, 2024 at 3:26 PM Ship Mints <shipmints <at> gmail.com> wrote:

> It was removed in a later proposed edit. I read the setopt code more
> deeply and ran some tests.
>
> On Fri, Sep 13, 2024 at 3:09 PM Stefan Monnier <monnier <at> iro.umontreal.ca>
> wrote:
>
>> > If you encounter a discrepancy that cannot be addressed by amending
>> > the type specified by a setopt call, and you can deem the desired
>> > type compatible nonetheless, use setq. If the user option has an
>> > associated \"setter\" you may invoke it manually using ???"
>>
>> You're here trying to describe workarounds to use in case of bugs
>> (either the value you set is wrong, or the type (or type-checker) is
>> wrong).  We usually don't do that in docstrings.
>>
>>
>>         Stefan
>>
>>

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