GNU bug report logs - #5971
23.1.95; `delete' modifies default value instead of buffer-local value

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Glenn Morris <rgm <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#5971: closed (23.1.95; `delete' modifies default value
 instead of buffer-local value)
Date: Sat, 09 Jul 2011 05:48:01 +0000

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Your message dated Sat, 09 Jul 2011 01:47:21 -0400
with message-id <ddliw86m52.fsf <at> fencepost.gnu.org>
and subject line Re: bug#5971: 23.1.95; `delete' modifies default value instead of buffer-local value
has caused the GNU bug report #5971,
regarding 23.1.95; `delete' modifies default value instead of buffer-local value
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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5971: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=5971
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From: "Drew Adams" <drew.adams <at> oracle.com>
To: <bug-gnu-emacs <at> gnu.org>
Subject: 23.1.95; `delete' modifies default value instead of buffer-local value
Date: Sun, 18 Apr 2010 19:41:18 -0700

Visit this file, without loading it:
http://www.emacswiki.org/emacs/wide-n.el
 
Change this line:
(setq wide-n-restrictions
      (remove (cons mrk1 mrk2) wide-n-restrictions))
 
To this:
(setq wide-n-restrictions
      (delete (cons mrk1 mrk2) wide-n-restrictions))
 
Then load the file (with `delete'). Then:
 
In some buffer X, do `C-x n n', then `C-x n x'.
Check the value of variable `wide-n-restrictions'.
 
In another buffer Y, just check the value of the variable. You will see
that the default value, which should be `(all)', has been changed to be what the
new value is for buffer X.
 
Try the same thing again (starting from scratch), but using `remove' (the
original code) instead of `delete'. There is no problem now: only the
buffer-local value is ever set.

This doesn't seem right to me.
 
In GNU Emacs 23.1.95.1 (i386-mingw-nt5.1.2600)
 of 2010-04-03 on G41R2F1
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --no-opt --cflags
-Ic:/imagesupport/include'

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From: Glenn Morris <rgm <at> gnu.org>
To: 5971-done <at> debbugs.gnu.org
Subject: Re: bug#5971: 23.1.95;
	`delete' modifies default value instead of buffer-local value
Date: Sat, 09 Jul 2011 01:47:21 -0400

I don't see a need to keep open this particular report, which was marked
"wontfix" some time ago.

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