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From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: Damien Cassou <damien@cassou.me>
Cc: Eli Zaretskii <eliz@gnu.org>, 63345@debbugs.gnu.org
Subject: bug#63345: 28.2; provided-mode-derived-p doesn't work when passed an alias in MODES
Date: Sun, 07 May 2023 10:23:22 -0400	[thread overview]
Message-ID: <jwvttwop6mk.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <83o7mwe7md.fsf@gnu.org> (Eli Zaretskii's message of "Sun, 07 May 2023 13:52:26 +0300")

Hi Damien,

>>   (provided-mode-derived-p 'javacript-mode 'javascript-mode)
>>     ⇒ nil
>> Is that a bug?

I'd put it into "not a bug" because there really is a difference between
a mode and an alias to a mode (e.g. you can expect a mode to have
matching `<mode>-map`, `<mode>-hook`, ... vars).

But admittedly, this is a messy area.

What was the original scenario where you bumped into this problem?


        Stefan






  reply	other threads:[~2023-05-07 14:23 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-07  9:49 bug#63345: 28.2; provided-mode-derived-p doesn't work when passed an alias in MODES Damien Cassou
2023-05-07 10:52 ` Eli Zaretskii
2023-05-07 14:23   ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
2023-05-07 14:35     ` Damien Cassou
2023-05-07 21:45       ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-05-08  4:56         ` Damien Cassou
2023-05-08 11:31           ` Eli Zaretskii

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