GNU bug report logs - #13620
24.2.92; Doc: (cl) Equality Predicates: unclear role of `eql'

Previous Next

Full log

View this message in rfc822 format

From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Michael Heerdegen <michael_heerdegen <at> web.de>
Subject: bug#13620: closed (Re: bug#13620: 24.2.92; Doc: (cl) Equality
 Predicates: unclear role of `eql')
Date: Sun, 03 Feb 2013 19:42:02 +0000

[Message part 1 (text/plain, inline)]

Your bug report

#13620: 24.2.92; Doc: (cl) Equality Predicates: unclear role of `eql'

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 13620 <at> debbugs.gnu.org.

-- 
13620: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=13620
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Glenn Morris <rgm <at> gnu.org>
To: 13620-done <at> debbugs.gnu.org
Subject: Re: bug#13620: 24.2.92;
	Doc: (cl) Equality Predicates: unclear role of `eql'
Date: Sun, 03 Feb 2013 14:40:40 -0500

Version: 24.2.93

OK.

[Message part 3 (message/rfc822, inline)]

From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.2.92; Doc: (cl) Equality Predicates: unclear role of `eql'
Date: Sun, 03 Feb 2013 17:53:33 +0100

Hello Emacs people,

please read this last paragraph in the manual, node (cl) Equality
Predicates:

,----------------------------------------------------------------------
|    Also note that the Common Lisp functions `member' and `assoc' use
| `eql' to compare elements, whereas Emacs Lisp follows the MacLisp
| tradition and uses `equal' for these two functions.  In Emacs, use
| `memq' (or `cl-member') and `assq' (or `cl-assoc') to get functions
| which use `eql' for comparisons.
|`----------------------------------------------------------------------

I think the last sentence is wrong or at least damaged, because `memq'
and `assq' use `eq' (not `eql') for comparison (at least, this is what
the doc of these function says).

This is in emacs-24 as well as in trunk.

I created this report after reading under "About equality in Emacs" in
gnu.emacs.help.  Pascal Bourguignon mentioned that a prior version said

,----------------------------------------------------------------------
| "In Emacs, use `member*' and `assoc*' to get
| functions which use `eql' for comparisons."
`----------------------------------------------------------------------


Thanks,

Michael


In GNU Emacs 24.2.92.3 (x86_64-unknown-linux-gnu, GTK+ Version 2.24.10)
 of 2013-01-30 on drachen
Bzr revision: fabian <at> anue.biz-20130130150258-y2xeua0sy8eruvyb
Windowing system distributor `The X.Org Foundation', version 11.0.10707000
System Description:	Debian GNU/Linux 7.0 (wheezy)

Configured using:
 `configure '--prefix=/usr/local/built/''

Important settings:
  value of $LC_ALL: de_DE.utf8
  value of $LC_TIME: C
  value of $LANG: de_DE.utf8
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Previous Next

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