GNU bug report logs - #632
23.0.60; Turning off visual-line-mode ignores previous value of truncate-lines

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From: help-debbugs <at> gnu.org (Emacs bug Tracking System)
To: Lawrence Mitchell <wence <at> gmx.li>
Subject: bug#632 closed by Chong Yidong <cyd <at> stupidchicken.com> (Re: 
 23.0.60; Turning off visual-line-mode ignores previous value of 
 truncate-lines)

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This is an automatic notification regarding your bug report
which was filed against the emacs package:

#632: 23.0.60; Turning off visual-line-mode ignores previous value of truncate-lines

It has been closed by Chong Yidong <cyd <at> stupidchicken.com>.

Their explanation is attached below along with your original report.
If this explanation is unsatisfactory and you have not received a
better one in a separate message then please contact Chong Yidong <cyd <at> stupidchicken.com> by
replying to this email.


-- 
632: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=632
Emacs Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Chong Yidong <cyd <at> stupidchicken.com>
To: Lawrence Mitchell <wence <at> gmx.li>
Cc: 632-done <at> debbugs.gnu.org
Subject: Re: 23.0.60; Turning off visual-line-mode ignores previous value of truncate-lines
Date: Tue, 12 Aug 2008 15:41:12 -0400

> If a buffer with `truncate-lines' set to t is put in visual-line-mode
> and subsequently visual-line-mode is turned off, the value of
> truncate-lines is lost (it is set to the default value).

I've checked in a fix.  Thanks.

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

From: Lawrence Mitchell <wence <at> gmx.li>
To: emacs-pretest-bug <at> gnu.org
Subject: 23.0.60; Turning off visual-line-mode ignores previous value of
	truncate-lines
Date: Wed, 30 Jul 2008 16:18:51 +0100

If a buffer with `truncate-lines' set to t is put in
visual-line-mode and subsequently visual-line-mode is turned off,
the value of truncate-lines is lost (it is set to the default value).

Steps to reproduce:

1) emacs -Q
2) evaluate

(progn
  (switch-to-buffer (generate-new-buffer "bug"))
  (setq truncate-partial-width-windows nil)
  (setq-default truncate-lines nil)
  (setq truncate-lines t)
  (insert (make-string (+ (window-width) 10) ?a))
  (goto-char (point-min))
  (visual-line-mode -1))

Expected result:
truncate-lines is t in the buffer "bug"

Actual result:
truncate-lines is nil (the default value).

In GNU Emacs 23.0.60.1 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2008-07-24 on lamacq.ph.ed.ac.uk
Windowing system distributor `The X.Org Foundation', version 11.0.60802000
configured using `configure  '-C' '--prefix=/scratch/s0198183/applications/emacs-trunk/' 'CFLAGS=-ggdb3 -O0''

Cheers,
Lawrence

-- 
Lawrence Mitchell <wence <at> gmx.li>

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