GNU bug report logs - #49809
[PATCH] Add macro 'pcase-setq'

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Package: emacs;

Reported by: Okam <okamsn <at> protonmail.com>

Date: Sun, 1 Aug 2021 17:21:01 UTC

Severity: normal

Tags: patch

Fixed in version 28.1

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

Bug is archived. No further changes may be made.

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Message #73 received at 49809 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Michael Heerdegen <michael_heerdegen <at> web.de>
Cc: okamsn <at> protonmail.com, 49809 <at> debbugs.gnu.org,
 Lars Ingebrigtsen <larsi <at> gnus.org>
Subject: Re: bug#49809: [PATCH] Add macro 'pcase-setq'
Date: Thu, 12 Aug 2021 11:06:36 -0400

>   (pcase-setq (or `((,a) [(,b)])
>                   x)
>               '((1) [(2)]))
>   (list a b x)) ;; ==> (1 2 nil)

If you want to do different things depending on which pattern matches
you should use `pcase` rather than `pcase-setq` (or `pcase-let` for
that matter).


        Stefan
This bug report was last modified 3 years and 277 days ago.

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