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: Chong Yidong <cyd <at> stupidchicken.com>
Subject: bug#632: marked as done (23.0.60; Turning off visual-line-mode 
 ignores previous value of truncate-lines)

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Your message dated Tue, 12 Aug 2008 15:41:12 -0400
with message-id <87d4ket413.fsf <at> stupidchicken.com>
and subject line Re: 23.0.60; Turning off visual-line-mode ignores previous value of truncate-lines
has caused the Emacs bug report #632,
regarding 23.0.60; Turning off visual-line-mode ignores previous value of truncate-lines
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact don <at> donarmstrong.com
immediately.)


-- 
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: 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>

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

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.

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