Re: mwheel-scroll causes bogus redisplay with Bitstream Vera Sans

[Eric Hanchrow]

Eric Hanchrow <offby1 <at> blarg.net> writes:

> 
> I'm using Debian Sarge, and I've installed the "ttf-bitstream-vera" package.
> 
> I start Emacs with 
> 
>       emacs -Q /usr/share/dict/words -fn '-*-Bitstream Vera Sans
Mono-Medium-r-*-*-18-*-*-*-*-*-*-*'
> 
> Then I move point to the bottom of the window with M-- M-r.  Now I
> roll the mouse wheel away from me, to attempt to scroll backwards.  As
> expected, I get an Emacs error: "Beginning of Buffer".  However, the
> window has recentered, with point now in the middle of the window --
> in other words, the window has scrolled _forwards_ half a screen.

Note that this doesn't happen with GNU Emacs 22.0.50.1 (i386-mingw-nt5.0.2195),
using the same font.