bug#2590: 23.0.91; Missing arglist when invoking C-h f

Action:
C-h f
current-buffer

Symptioms (in the help buffer):
The first line was correct: "current-buffer is a built-in function in
`C source code'."

The rest of the buffer was irrelevant. Sorry, i can't remember the
contents; it was about another function...

In GNU Emacs 23.0.91.1 (i486-pc-linux-gnu, GTK+ Version 2.12.12)
 of 2009-02-28 on elegiac, modified by Debian
 (emacs-snapshot package, version 1:20090228-1)
Windowing system distributor `The X.Org Foundation', version 11.0.10402000
configured using `configure  '--build' 'i486-linux-gnu' '--host'
'i486-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib'
'--libexecdir=/usr/lib' '--localstatedir=/var'
'--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes'
'--enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/23.0.91/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.0.91/site-lisp:/usr/share/emacs/site-lisp'
'--with-x=yes' '--with-x-toolkit=gtk' 'build_alias=i486-linux-gnu'
'host_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN
-DSITELOAD_PURESIZE_EXTRA=5000 -g -O2' 'LDFLAGS=-g -Wl,--as-needed'
'CPPFLAGS=''

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
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Help

Minor modes in effect:
  shell-dirtrack-mode: t
  show-paren-mode: t
  global-linum-mode: t
  linum-mode: t
  tooltip-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-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
  view-mode: t

Recent input:
<help-echo> C-h f c u r r <tab> b <tab> <return> C-x
1 C-x 2 C-x <right> C-x <right> <help-echo> <help-echo>
<help-echo> <help-echo> C-h a b u g <tab> <backspace>
<return> <help-echo> <help-echo> <mouse-1> <mouse-1>
<mouse-1> <mouse-1> <mouse-1> <mouse-1> <mouse-1> <mouse-1>
<mouse-1> <mouse-1> <mouse-1> <mouse-1> <down-mouse-1>
<mouse-1> M-x r e p o <tab> r <tab> <return> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <menu-bar> <file> <make-frame>
<help-echo> <help-echo> <switch-frame> C-h f c u r
r <tab> b u <tab> <return> C-h k C-h f <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<switch-frame> <down-mouse-1> <mouse-1> <help-echo>
<down-mouse-1> <mouse-2> <down-mouse-1> <mouse-1> C-x
k <return> C-k C-x k <return> C-x k <return> C-x 0
C-x k <return> C-x k <return> C-x k <return> C-x 1
C-x <right> C-x C-c <help-echo> C-h f c u r e <backspace>
r <tab> b <tab> <return> C-x 1 C-x 2 C-x <right> C-x
<right> C-h k C-x h <help-echo> <help-echo> <help-echo>
<down-mouse-1> <mouse-2> C-h k C-h f M-x r e p o <tab>
<down-mouse-1> <mouse-2>

Recent messages:
Invalid face reference: font-lock-comment-face
Invalid face reference: font-lock-comment-delimiter-face [2 times]
Invalid face reference: linum
Invalid face reference: font-lock-comment-face
Invalid face reference: linum
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