Minor display corruption with bold Lucida Console text on Windows

[francis]

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 address@hidden mailing list.

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

When using emacs on Windows XP with the Lucida Console font small dots and 
lines sometimes remain on the screen after text has been scrolled.  If I make 
emacs redraw its window by moving another window on top of it these dots go 
away.


Steps to reproduce:
1. e:\programs\emacs-22.0.94\bin\emacs.exe -q

2. M-x set-default-font -outline-Lucida 
Console-normal-r-normal-normal-11-*-96-96-c-*-iso8859-15

3. Open file zip-man.doc (available at http://www.devrx.org/emacs/zip-man.doc).

4. Scroll up and down repeatedly using the scroll wheel on the mouse.


I have put a screenshot of the corrupted display up at 
http://www.devrx.org/emacs/screenshot.png.  I think that the problem may be 
related to the fact that Lucida Console Bold is larger than Lucida Console; you 
can see from the screenshot that the corruption happens near bold characters.

Francis


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
e:/programs/emacs-22.0.94/etc/DEBUG for instructions.


In GNU Emacs 22.0.94.1 (i386-mingw-nt5.1.2600)
 of 2007-02-26 on LO0002925
X server distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --cflags -march=pentium4'

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: ENG
  locale-coding-system: cp1252
  default-enable-multibyte-characters: t

Major mode: Fundamental

Minor modes in effect:
  enriched-mode: t
  encoded-kbd-mode: t
  tooltip-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  use-hard-newlines: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  auto-compression-mode: t
  line-number-mode: t

Recent input:
s e t - d e f <tab> <return> <up> C-y <return> C-x 
C-f e : / t m <tab> z i <tab> <return> C-x C-v C-e 
<backspace> <M-backspace> <M-backspace> <M-backspace> 
e m <tab> c <tab> z i <tab> <return> <help-echo> <wheel-down> 
<double-wheel-down> <triple-wheel-down> <triple-wheel-down> 
<triple-wheel-down> <wheel-down> <wheel-down> <wheel-down> 
<double-wheel-up> <triple-wheel-down> <triple-wheel-down> 
<triple-wheel-down> <triple-wheel-up> <triple-wheel-up> 
<triple-wheel-up> <triple-wheel-down> <triple-wheel-down> 
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down> 
<wheel-up> <double-wheel-up> <triple-wheel-down> <triple-wheel-down> 
<wheel-up> <double-wheel-up> <triple-wheel-down> <triple-wheel-down> 
<wheel-up> <double-wheel-down> <triple-wheel-up> <triple-wheel-down> 
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down> 
<wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-down> 
<triple-wheel-up> <wheel-down> <rwindow> <help-echo> 
<help-echo> <down-mouse-1> <mouse-1> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <menu-bar> <help-menu> 
<report-emacs-bug>

Recent messages:
For information about the GNU Project and its goals, type C-h C-p. [2 times]
next-history-element: Beginning of history; no preceding item [3 times]
Loading enriched...done
Enriched: decoding document...
Indenting...
Enriched: decoding document...
Indenting...
Loading emacsbug...
Loading regexp-opt...done
Loading emacsbug...done