GNU bug report logs - #33655
26.1; A small error in cl-member's documentation

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Package: emacs;

Reported by: Xu Chunyang <mail <at> xuchunyang.me>

Date: Fri, 7 Dec 2018 03:54:01 UTC

Severity: minor

Tags: fixed

Found in version 26.1

Fixed in version 27.1

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

Bug is archived. No further changes may be made.

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Report forwarded to bug-gnu-emacs <at> gnu.org:
bug#33655; Package emacs. (Fri, 07 Dec 2018 03:54:01 GMT) Full text and rfc822 format available.
Acknowledgement sent to Xu Chunyang <mail <at> xuchunyang.me>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Fri, 07 Dec 2018 03:54:01 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Xu Chunyang <mail <at> xuchunyang.me>
To: <bug-gnu-emacs <at> gnu.org>
Subject: 26.1; A small error in cl-member's documentation
Date: Fri, 07 Dec 2018 11:52:35 +0800

(info "(cl) Lists as Sets") says

> With no keyword arguments, ‘cl-member’ is equivalent to ‘memq’.

It is not true, since cl-member uses eql by default, while memq uses eq.

  (cl-member 1.0 '(1.0))
  ;; => (1.0)
  
  (memq 1.0 '(1.0))
  ;; => nil
Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#33655; Package emacs. (Tue, 09 Jul 2019 23:41:01 GMT) Full text and rfc822 format available.

Message #8 received at 33655 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Xu Chunyang <mail <at> xuchunyang.me>
Cc: 33655 <at> debbugs.gnu.org
Subject: Re: bug#33655: 26.1; A small error in cl-member's documentation
Date: Wed, 10 Jul 2019 01:40:11 +0200

Xu Chunyang <mail <at> xuchunyang.me> writes:

> (info "(cl) Lists as Sets") says
>
>> With no keyword arguments, ‘cl-member’ is equivalent to ‘memq’.
>
> It is not true, since cl-member uses eql by default, while memq uses eq.
>
>   (cl-member 1.0 '(1.0))
>   ;; => (1.0)
>   
>   (memq 1.0 '(1.0))
>   ;; => nil

Yup; the documentation is wrong here.  I've now removed that sentence
about memq from the manual on the Emacs trunk.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no
Added tag(s) fixed. Request was from Lars Ingebrigtsen <larsi <at> gnus.org> to control <at> debbugs.gnu.org. (Tue, 09 Jul 2019 23:41:02 GMT) Full text and rfc822 format available.
bug marked as fixed in version 27.1, send any further explanations to 33655 <at> debbugs.gnu.org and Xu Chunyang <mail <at> xuchunyang.me> Request was from Lars Ingebrigtsen <larsi <at> gnus.org> to control <at> debbugs.gnu.org. (Tue, 09 Jul 2019 23:41:02 GMT) Full text and rfc822 format available.
bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Wed, 07 Aug 2019 11:24:08 GMT) Full text and rfc822 format available.
This bug report was last modified 4 years and 257 days ago.

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