GNU bug report logs - #7283
23.2; whitespace-mode breaks scrolling with partial line visible at top of buffer

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Anders Kaseorg <andersk <at> MIT.EDU>
Subject: bug#7283: closed (Re: bug#7283: 23.2; whitespace-mode breaks
 scrolling with partial line visible at top	of buffer)
Date: Wed, 27 Oct 2010 06:28:01 +0000

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

Your bug report

#7283: 23.2; whitespace-mode breaks scrolling with partial line visible at top of buffer

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 7283 <at> debbugs.gnu.org.

-- 
7283: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=7283
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: 7283-done <at> debbugs.gnu.org
Subject: Re: bug#7283: 23.2;
	whitespace-mode breaks scrolling with partial line visible at top	of
	buffer
Date: Wed, 27 Oct 2010 02:31:36 -0400

Version: 23.3

Eli Zaretskii wrote:

> I can reproduce this in Emacs 23.2, but not in Emacs 24.0.50.

Also seems fixed in current emacs-23 branch.

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

From: Anders Kaseorg <andersk <at> MIT.EDU>
To: bug-gnu-emacs <at> gnu.org
Subject: 23.2;
	whitespace-mode breaks scrolling with partial line visible at top of
	buffer
Date: Tue, 26 Oct 2010 15:43:48 -0400

When whitespace-mode is enabled and the buffer is scrolled such that
only part of a long line is visible at the top of the buffer, it becomes
impossible to scroll the window down using the down arrow.

This can be reproduced from ‘emacs -Q’ with
  C-u 99 <return>
  M-<
  C-u 99 a
  C-u 0 C-l
  M-x whitespace-mode
followed by pushing <down> until the window scrolls (it won’t!).


In GNU Emacs 23.2.1 (x86_64-pc-linux-gnu, GTK+ Version 2.22.0)
 of 2010-10-14 on lawrencium, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.10900000
configured using `configure  '--build' 'x86_64-linux-gnu' '--build' 'x86_64-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib' '--localstatedir=/var/lib' '--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes' '--enable-locallisppath=/etc/emacs23:/etc/emacs:/usr/local/share/emacs/23.2/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.2/site-lisp:/usr/share/emacs/site-lisp:/usr/share/emacs/23.2/leim' '--with-x=yes' '--with-x-toolkit=gtk' '--with-toolkit-scroll-bars' 'build_alias=x86_64-linux-gnu' 'CFLAGS=-DDEBIAN -g -O2' 'LDFLAGS=-g' 'CPPFLAGS=''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.utf8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  whitespace-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-u 9 9 <return> M-< C-u 9 9 a C-u 0 C-l M-x w h i 
t e s p a c e - m o d e <return> C-u 9 9 <down> M-x 
r e p o r t - e m a c s - b u g <return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Mark set
Whitespace mode enabled

Load-path shadows:
/usr/share/emacs/23.2/site-lisp/debathena-discuss-emacs/discuss-acl hides /usr/share/emacs/site-lisp/discuss-acl
/usr/share/emacs/23.2/site-lisp/debathena-discuss-emacs/discuss hides /usr/share/emacs/site-lisp/discuss
/usr/share/emacs/23.2/site-lisp/debathena-discuss-emacs/discuss-misc hides /usr/share/emacs/site-lisp/discuss-misc
/usr/share/emacs/23.2/site-lisp/debian-startup hides /usr/share/emacs/site-lisp/debian-startup
/usr/share/emacs/23.2/site-lisp/debathena-discuss-emacs/discuss-enter hides /usr/share/emacs/site-lisp/discuss-enter
/usr/share/emacs/23.2/site-lisp/magit hides /usr/share/emacs/site-lisp/magit
/usr/share/emacs/23.2/site-lisp/debathena-discuss-emacs/discuss-ls hides /usr/share/emacs/site-lisp/discuss-ls
/usr/share/emacs/23.2/site-lisp/speedbar/speedbar hides /usr/share/emacs/23.2/lisp/speedbar
/usr/share/emacs/23.2/site-lisp/cedet-common/ezimage hides /usr/share/emacs/23.2/lisp/ezimage
/usr/share/emacs/23.2/site-lisp/speedbar/sb-image hides /usr/share/emacs/23.2/lisp/sb-image
/usr/share/emacs/23.2/site-lisp/speedbar/dframe hides /usr/share/emacs/23.2/lisp/dframe
/usr/share/emacs/site-lisp/rst hides /usr/share/emacs/23.2/lisp/textmodes/rst
/usr/share/emacs/23.2/site-lisp/dictionaries-common/ispell hides /usr/share/emacs/23.2/lisp/textmodes/ispell
/usr/share/emacs/23.2/site-lisp/dictionaries-common/flyspell hides /usr/share/emacs/23.2/lisp/textmodes/flyspell
/usr/share/emacs/23.2/site-lisp/eieio/eieio-opt hides /usr/share/emacs/23.2/lisp/emacs-lisp/eieio-opt
/usr/share/emacs/23.2/site-lisp/eieio/eieio-comp hides /usr/share/emacs/23.2/lisp/emacs-lisp/eieio-comp
/usr/share/emacs/23.2/site-lisp/eieio/eieio-base hides /usr/share/emacs/23.2/lisp/emacs-lisp/eieio-base
/usr/share/emacs/23.2/site-lisp/eieio/eieio-speedbar hides /usr/share/emacs/23.2/lisp/emacs-lisp/eieio-speedbar
/usr/share/emacs/23.2/site-lisp/eieio/eieio hides /usr/share/emacs/23.2/lisp/emacs-lisp/eieio
/usr/share/emacs/23.2/site-lisp/eieio/eieio-custom hides /usr/share/emacs/23.2/lisp/emacs-lisp/eieio-custom
/usr/share/emacs/23.2/site-lisp/eieio/chart hides /usr/share/emacs/23.2/lisp/emacs-lisp/chart
/usr/share/emacs/23.2/site-lisp/cedet-common/inversion hides /usr/share/emacs/23.2/lisp/cedet/inversion
/usr/share/emacs/23.2/site-lisp/cedet-common/cedet hides /usr/share/emacs/23.2/lisp/cedet/cedet
/usr/share/emacs/23.2/site-lisp/semantic/semantic hides /usr/share/emacs/23.2/lisp/cedet/semantic
/usr/share/emacs/23.2/site-lisp/ede/ede hides /usr/share/emacs/23.2/lisp/cedet/ede
/usr/share/emacs/23.2/site-lisp/cedet-common/cedet-files hides /usr/share/emacs/23.2/lisp/cedet/cedet-files
/usr/share/emacs/23.2/site-lisp/cedet-common/mode-local hides /usr/share/emacs/23.2/lisp/cedet/mode-local

Features:
(shadow sort mail-extr message sendmail regexp-opt ecomplete rfc822 mml
easymenu mml-sec password-cache mm-decode mm-bodies mm-encode mailcap
mail-parse rfc2231 rfc2047 rfc2045 qp ietf-drums mailabbrev nnheader
gnus-util netrc time-date mm-util mail-prsvr gmm-utils wid-edit
mailheader canlock sha1 hex-util hashcash mail-utils emacsbug disp-table
whitespace tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win
x-dnd font-setting tool-bar dnd fontset image fringe lisp-mode register
page menu-bar rfn-eshadow timer select scroll-bar mldrag mouse jit-lock
font-lock syntax facemenu font-core frame cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew
greek romanian slovak czech european ethiopic indian cyrillic chinese
case-table epa-hook jka-cmpr-hook help simple abbrev loaddefs button
minibuffer faces cus-face files text-properties overlay md5 base64
format env code-pages mule custom widget hashtable-print-readable
backquote make-network-process dbusbind system-font-setting
font-render-setting gtk x-toolkit x multi-tty emacs)

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