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

Previous Next

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.

Full log

View this message in rfc822 format

From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: Okam <okamsn <at> protonmail.com>, 49809 <at> debbugs.gnu.org
Subject: bug#49809: [PATCH] Add macro 'pcase-setq'
Date: Mon, 09 Aug 2021 02:28:46 +0200

Stefan Monnier <monnier <at> iro.umontreal.ca> writes:

> I'd expect a behavior like that of `pcase-let`, instead.

I don't recall why it was not achievable to make `pcase-let' reliably
error for non-matching patterns.  Would that be possible for
`pcase-setq'?

(What for example would happen if we just wrapped each PAT inside

  (or PAT (guard (error "pcase-setq: PAT doesn't match")))

?)

Michael.
This bug report was last modified 3 years and 278 days ago.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.