bug#466: 23.0.60; windmove.el doesnt not always switch windows in ERC

[Keegan Carruthers-Smith <keegan.csmith@gmail.com>]

When I am in an ERC buffer which is "touching" the bottom of my emacs session
I can't switch to windows to the left or right. (ie the only window below it
is the mini-buffer and the input prompt is at the bottom. Screenshot:
http://people.cs.uct.ac.za/~smtkee002/windmoveproblem.jpg ). I have tested in
other modes and this problem does not happen. C-x o still works.


In GNU Emacs 23.0.60.1 (i686-pc-linux-gnu, GTK+ Version 2.12.9)
 of 2008-06-17 on zero
Windowing system distributor `The X.Org Foundation', version 11.0.10300000
configured using `configure  '--prefix=/usr' '--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' '--without-carbon' '--without-sound' '--with-x' '--without-toolkit-scroll-bars' '--with-gif' '--with-jpeg' '--with-png' '--with-rsvg' '--with-tiff' '--with-xpm' '--enable-font-backend' '--with-freetype' '--with-xft' '--without-libotf' '--without-m17n-flt' '--with-x-toolkit=gtk' '--without-hesiod' '--without-kerberos' '--without-kerberos5' '--with-gpm' '--with-dbus' '--build=i686-pc-linux-gnu' 'build_alias=i686-pc-linux-gnu' 'host_alias=i686-pc-linux-gnu' 'CFLAGS=-O2 -march=pentium3 -pipe''

Important settings:
  value of $LC_ALL: en_US.utf8
  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.utf8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: ERC

Minor modes in effect:
  shell-dirtrack-mode: t
  erc-list-mode: t
  erc-menu-mode: t
  erc-autojoin-mode: t
  erc-networks-mode: t
  erc-pcomplete-mode: t
  erc-button-mode: t
  display-time-mode: t
  show-paren-mode: t
  erc-truncate-mode: t
  erc-spelling-mode: t
  flyspell-mode: t
  erc-netsplit-mode: t
  erc-ring-mode: t
  erc-fill-mode: t
  erc-stamp-mode: t
  erc-track-mode: t
  erc-track-minor-mode: t
  erc-match-mode: t
  erc-irccontrols-mode: t
  erc-noncommands-mode: t
  erc-move-to-prompt-mode: t
  erc-readonly-mode: t
  erc-scrolltobottom-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
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<up> <up> <up> C-x k <return> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<up> <up> <right> <right> <return> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> ] 
] <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> M-x r e p o <tab> r <tab> <return> w 
i n d m o v e SPC d o e s SPC n o t SPC a l w a y s 
SPC n a v i a g e <backspace> <backspace> <backspace> 
g a t e SPC p r o p e r l y <backspace> <backspace> 
<backspace> <backspace> e r l y <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
s w i t c h SPC w i n d o w s <return> <down> <next> 
<up> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <up> <up> <up> <up> <up> 
<up> <up> <up> <up> <up> <up> <up> <up> C-x k <return> 
C-x k <return> C-x b C-g <S-right> <S-right> C-x b 
C-g C-x o C-x b o t <backspace> r g SPC a <return> 
<S-left> <S-right> M-x r e p o <tab> r <tab> <retu
rn>

Recent messages:
Making completion list...
Quit [2 times]
Note: file is write protected
View mode: type C-h for help, h for commands, q to quit.
Mark saved where search started
call-interactively: Beginning of buffer [9 times]
bunzip2ing emacs-6.info.bz2...done
Making completion list...
Quit [2 times]
Making completion list...