jumpy behaviour when selecting text

[Maarten Vergauwen <Maarten.Vergauwen@esat.kuleuven.ac.be>]

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In GNU Emacs 21.2.1 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2002-04-11 on vaire
configured using `configure  --prefix=/freeware/emacs --exec-prefix=/freeware/emacs/linux-i386'
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.iso885915
  locale-coding-system: iso-latin-9
  default-enable-multibyte-characters: t

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

Hi,

I noticed some weird behaviour when I want to select some text in a
buffer with the mouse.

Open a file, a couple of hundred lines long.
Go to the bottom of the file.
Select a point in the file with the mouse and drag your mouse upward
until emacs has scrolled a few times.
Drag the mouse downward until emacs scrolled at least once.
Drag the mouse upward again. Emacs will suddenly jump to the bottom of
the buffer.

I experienced this bug, running "emacs -q --no-site-file" on
intel running GNU/linux
alpha running OSF
Sun   running SunOS 5.8
HP    running HP-UX 11.0
SGI   running IRIX 6.5


Maarten


Recent input:
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <down-mouse-1> <mouse-1> 
M-x r e p o r t - e m a c v s <backspace> <backspace> 
s b <backspace> - b u <tab> <return>

Recent messages:
(emacs -q --no-site-file)
Loading disp-table...done
Loading tool-bar...done
Loading image...done
Loading tooltip...done
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Mark set
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