want user option for pop-to-buffer to split window horizontally not vertically

[Walter Gillett]

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In GNU Emacs 21.4.1 (i386-redhat-linux-gnu, X toolkit, Xaw3d scroll bars)
of 2005-05-18 on decompose.build.redhat.com
configured using `configure  --build=i386-redhat-linux 
--host=i386-redhat-linux --target=i386-redhat-linux-gnu --program-prefix= 
--prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin 
--sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include 
--libdir=/usr/lib --libexecdir=/usr/libexec --localstatedir=/var 
--sharedstatedir=/usr/com --mandir=/usr/share/man --infodir=/usr/share/info 
--with-pop --with-sound'
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.UTF-8
 locale-coding-system: utf-8
 default-enable-multibyte-characters: t

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

With Emacs 21.4, when I hit Ctrl-X Ctrl-B to list all buffers, for example, 
I always get a vertical split whereas with a widescreen monitor, a 
horizontal split would be better.  My understanding from the GNU mailing 
list (see 
http://lists.gnu.org/archive/html/help-gnu-emacs/2005-11/msg00630.html) is 
that this behavior is hardwired into the function pop-to-buffer and cannot 
be easily changed.  Would be great to have an option to customize this 
behavior.

-Walter Gillett

Recent input:
d o w - h o z <backspace> r i z o n t a l l Y & <backspace>
<backspace> y ) <left> <left> <left> <left> <left>
<left> <left> <left> <left> <left> <left> <left> <left>
<left> <left> <left> <left> <left> <left> <left> <left>
<left> <left> <left> <left> <left> <left> C-k C-y <return>
C-x 1 <down-mouse-1> <mouse-1> <down-mouse-1> <mouse-1>
<return> C-y C-x C-s C-x <escape> <escape> <up> <up>
<return> C-x C-b C-x 1 <down-mouse-1> <mouse-1> <down-mouse-1>
<mouse-1> M-x b u g SPC <backspace> <backspace> <backspace>
r e p o SPC r t - e m SPC b u SPC <return>

Recent messages:
Wrote /home/wgillett/.emacs
Loading /home/wgillett/.emacs...
Loading advice...done
Loading /home/wgillett/.emacs...done
#<window 13 on .emacs>
Mark set
Wrote /home/wgillett/.emacs
Loading /home/wgillett/.emacs...done
Making completion list...
Loading emacsbug...done

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