23.0.50; pcmpl-ssh-hosts breaks when known_hosts file has a space in the wrong place

[Phil Hagelberg <phil@hagelb.org>]

The function pcmpl-ssh-hosts (which is invoked when you launch eshell
and type "ssh host<tab>") fails when the last entry in your
pcmpl-ssh-known-hosts-file has a space after the hostname instead of a
comma. I believe newer versions of openssh do this.

I have a patch to fix this at http://hagelb.org/pcmpl-ssh-space.patch.

In GNU Emacs 23.0.50.1 (i686-pc-linux-gnu, GTK+ Version 2.12.0)
 of 2007-12-17 on dynabook
Windowing system distributor `The X.Org Foundation', version 11.0.10300000
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

Major mode: EShell

Minor modes in effect:
  shell-dirtrack-mode: t
  show-paren-mode: t
  global-hl-line-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
k e d SPC w h e n SPC y o u SPC l a u n c h SPC e s 
h e l l , SPC t y p e SPC S <backspace> s s h SPC M-b 
" C-e h o s t < t a b > " M-b M-b M-b M-b C-b <backspace> 
SPC a n d SPC <backspace> C-e ) SPC <backspace> M-q 
SPC f a i l s SPC w h e n SPC t h e SPC l a s t SPC 
e n t r y SPC i n SPC y o u r SPC C-h v s <backspace> 
p c m p l - s s h <tab> C-M-h <tab> <tab> C-M-h s s 
h <tab> <tab> C-y M-q SPC C-x C-f . s s h / k n <return> 
M-> C-x C-f c o n <return> M-> C-x k <return> C-p C-p 
C-n C-x k <return> h a s SPC a SPC s p a c e SPC a 
f t e r SPC t h e SPC h o s t n a m e SPC i n s t e 
a d SPC o f SPC a SPC c o m m a . M-q C-n C-n C-a C-n 
C-n C-p C-p C-p C-p C-n C-n C-p C-k C-k C-n C-n C-n 
C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n 
C-n C-n C-n C-n C-n C-p C-p C-p C-p C-p C-p C-p C-p 
C-p C-g M-< C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n 
C-n C-p C-p C-p C-p C-p C-p C-SPC C-n C-n C-n C-n M-w 
C-x k <return> C-x o C-x k <return> C-x C-g M-x r e 
p o r t - e m a <tab> <return>

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