GNU bug report logs - #4318
23.1; trouble indenting looooong lines with visual-line-mode

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From: Allan Gottlieb <gottlieb <at> nyu.edu>
To: bug-gnu-emacs <at> gnu.org
Subject: bug#4318: 23.1; trouble indenting looooong lines with visual-line-mode
Date: Wed, 02 Sep 2009 10:13:28 -0400

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the bug-gnu-emacs <at> gnu.org mailing list,
and to the gnu.emacs.bug news group.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

Start with emacs -Q and a buffer in fundamental mode

Consider a line wider than the frame, for example

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

which exceeds an 80 column frame.
Now assume you have a short line say
yyyy
followed by the above long line, i.e.
yyyy
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

So far so good.  Now indent the long line with say one space.
If visual-line-mode is OFF, I see what I expect, the long line is
preceded by one space.

But with visual-line-mode ON, a blank line appears on the screen between
the short and long lines, i.e. the long line (with only one word) was
wrapped.
This behavior seems wrong.
I realize the blank line is not in the file, but believe the on-screen
image is misleading or at least annoying.

Thanks for emacs.
allan <gottlieb <at> nyu.edu>


If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/usr/share/emacs/23.1/etc/DEBUG for instructions.


In GNU Emacs 23.1.1 (i686-pc-linux-gnu, GTK+ Version 2.14.7)
 of 2009-08-17 on ajglap
Windowing system distributor `The X.Org Foundation', version 11.0.10503000
configured using `configure  '--prefix=/usr' '--build=i686-pc-linux-gnu' '--host=i686-pc-linux-gnu' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--datadir=/usr/share' '--sysconfdir=/etc' '--localstatedir=/var/lib' '--program-suffix=-emacs-23' '--infodir=/usr/share/info/emacs-23' '--with-sound' '--with-x' '--with-toolkit-scroll-bars' '--with-gif' '--with-jpeg' '--with-png' '--without-rsvg' '--with-tiff' '--with-xpm' '--with-xft' '--without-libotf' '--without-m17n-flt' '--with-x-toolkit=gtk' '--without-hesiod' '--without-kerberos' '--without-kerberos5' '--with-gpm' '--with-dbus' 'build_alias=i686-pc-linux-gnu' 'host_alias=i686-pc-linux-gnu' 'CFLAGS=-O2 -march=prescott -pipe' 'LDFLAGS=-Wl,-O1''

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: nil
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  default-enable-multibyte-characters: t

Major mode: Article

Minor modes in effect:
  iswitchb-mode: t
  delete-selection-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
M-x a j g SPC i n i t <return> M-x g n u s <return> 
<return> <down> <down> <down> SPC E SPC <help-echo> 
<select-window> <help-echo> <select-window> <help-echo> 
<select-window> <select-window> q <down> <return> <C-end> 
C-r - > <return> <return> <help-echo> <help-echo> <select-window> 
<help-echo> <select-window> <select-window> <select-window> 
<help-echo> <help-echo> <select-window> ! d ! <select-window> 
<select-window> C-x 5 2 <switch-frame> <switch-frame> 
<select-window> <help-echo> <help-echo> M-x r e p o 
r t - e m <tab> <return>

Recent messages:
Fetching headers for nnml:MAIL...done
Finding all score files...done
Generating summary...done
Retrieving newsgroup: nnml:emacs...
Fetching headers for nnml:emacs...done
Scoring...done
Generating summary...done
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Auto-saving...done

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