GNU bug report logs - #47425
26.3; `plist-get', `plist-put' should accept a TEST function

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Package: emacs;

Reported by: Drew Adams <drew.adams <at> oracle.com>

Date: Fri, 26 Mar 2021 22:14:01 UTC

Severity: wishlist

Found in version 26.3

Fixed in version 29.1

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

Bug is archived. No further changes may be made.

Full log

Message #88 received at 47425 <at> debbugs.gnu.org (full text, mbox):

From: "Basil L. Contovounesios" <contovob <at> tcd.ie>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: "47425 <at> debbugs.gnu.org" <47425 <at> debbugs.gnu.org>,
 Mattias Engdegård <mattiase <at> acm.org>,
 Nicolas Petton <nicolas <at> petton.fr>, Philipp Stephani <p.stephani2 <at> gmail.com>,
 Stefan Monnier <monnier <at> iro.umontreal.ca>, Drew Adams <drew.adams <at> oracle.com>
Subject: Re: bug#47425: 26.3; `plist-get', `plist-put' should accept a TEST
 function
Date: Tue, 28 Jun 2022 18:23:48 +0300

(let ((plist (list :a t)))
  (setf (plist-get plist :a) nil)
  plist)
;; => (:a nil)

(let ((plist (list :a t)))
  (setf (plist-get plist :a #'eq) nil)
  plist)
;; error-> wrong-number-of-arguments

Do we want the expander in gv.el to understand the new argument?

There's also the question of map.el.  Custom predicates are deprecated
there, since they rely on knowing the underlying map type.  Do we want
plist operations to understand custom predicates regardless?

Thanks,

-- 
Basil
This bug report was last modified 3 years and 58 days ago.

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