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bug#61293: 30.0.50; [FR] Add `proper-list-p' and `plistp' to 2.7 Type Pr
From: |
Ihor Radchenko |
Subject: |
bug#61293: 30.0.50; [FR] Add `proper-list-p' and `plistp' to 2.7 Type Predicates section of the manual |
Date: |
Mon, 06 Feb 2023 10:19:14 +0000 |
Robert Pluim <rpluim@gmail.com> writes:
> One point here: Emacs allows 'improper' alists without complaining:
>
> (alist-get 1 '((2 . 4)
> 5
> (3 . 1)
> (1 . 7)))
>
> => 7
>
> so weʼd have to be careful about how we defined `alistp'
This is no different from plists:
(plistp '(1 2 3)) ; => nil
(plist-get '(1 2 3) 1) ; => 2
--
Ihor Radchenko // yantar92,
Org mode contributor,
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