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From: Eli Zaretskii <eliz@gnu.org>
To: Damien Cassou <damien@cassou.me>,
	Stefan Monnier <monnier@iro.umontreal.ca>
Cc: 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 13:52:26 +0300	[thread overview]
Message-ID: <83o7mwe7md.fsf@gnu.org> (raw)
In-Reply-To: <875y94tqry.fsf@cassou.me> (message from Damien Cassou on Sun, 07 May 2023 11:49:37 +0200)

> From: Damien Cassou <damien@cassou.me>
> Date: Sun, 07 May 2023 11:49:37 +0200
> 
> The function `provided-mode-derived-p` (used by `derived-mode-p`) has
> the code below. The first 3 lines of the function takes care of
> converting the first argument MODE if it is an alias (as
> `javascript-mode` is an alias for `js-mode`). This works great when
> calling the function this way:
> 
>   (provided-mode-derived-p 'javascript-mode 'prog-mode)
>     ⇒ prog-mode
> 
> But if the second argument MODES contains an alias, the code has no
> conversion mechanism and the line below returns nil even though I
> expect it to return non-nil:
> 
>   (provided-mode-derived-p 'javacript-mode 'javascript-mode)
>     ⇒ nil
> 
> Is that a bug?

Adding Stefan.





  reply	other threads:[~2023-05-07 10:52 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 [this message]
2023-05-07 14:23   ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
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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