bug#7750: 24.0.50; M-x apropos RET dynmaic RET signals an error

[Kenichi Handa]

With the latest trunk code, M-x apropos RET dynmaic RET
signals the error "mapconcat: Wrong type argument: symbolp, 0".
The emacs-23 branch code doesn't cause this error.

---
Kenichi Handa
handa@m17n.org


In GNU Emacs 24.0.50.1 (i686-pc-linux-gnu, GTK+ Version 2.20.1)
 of 2010-12-28 on etlken
Windowing system distributor `The X.Org Foundation', version 11.0.10706000
configured using `configure  'CFLAGS=-g''

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: ja_JP.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Fundamental

Minor modes in effect:
  display-time-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t

Recent input:
C-n C-n C-n C-n C-n C-v M-v M-v q C-x b * B a <tab> 
C-g <escape> x M-p <return> M-p <return> C-p C-p C-p 
C-p C-p C-p C-p C-p C-p C-SPC C-n C-n C-n C-n C-n C-n 
C-n C-n C-n C-n C-n C-n <escape> w C-x o C-n C-n C-n 
C-n C-y C-x C-x 1 <backspace> C-x 1 C-p C-p C-n C-n 
C-n C-n C-n C-f C-f C-f C-f C-f C-f C-f C-f C-f C-f 
C-f C-f C-f C-f C-f C-f C-b C-b C-b C-b C-k . . . C-n 
C-b C-b C-b C-b C-b C-b C-f C-f C-f C-f C-f C-f C-f 
C-f C-f C-f C-f C-/ C-/ C-f C-f C-a C-f C-f C-f C-f 
C-f C-f C-f C-f C-f C-f C-a C-f C-M-n C-M-p C-v M-v 
C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p 
C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p 
C-p C-p C-n C-e M-b M-b M-b M-b M-b C-k C-x b <return> 
q C-n C-n C-n C-u C-u C-u C-u C-k C-p C-p C-k C-p C-e 
C-a C-o W i t h SPC t h e SPC l a t s t <backspace> 
<backspace> e s t SPC t r u n k SPC c o d e , SPC C-d 
C-e t h e SPC e r r o r SPC <escape> x C-g C-x b <return> 
C-c C-d C-x b <return> <escape> x M-p <return> M-p 
<return> C-x b * M e <tab> <return> <escape> > C-p 
C-p C-r w r o n C-a C-SPC C-e <escape> w C-x b <return> 
C-a C-x C-g C-p C-p C-p C-p M-f M-f C-n M-f M-f M-f 
M-f M-b C-SPC C-e <escape> w C-x k <return> y e s <return> 
<escape> x M-p M-p <return>

Recent messages:
Mark set
Buffer *unsent mail to bug-gnu-emacs@gnu.org* has shrunk a lot; auto save 
disabled in that buffer until next real save
Undo! [2 times]
Back to top level.
Quit
Set debug-on-error to nil
mapconcat: Wrong type argument: symbolp, 0
Mark set
Mark saved where search started
Mark set [2 times]

Load-path shadows:
/usr/local/share/emacs/site-lisp/anthy/leim-list hides 
/usr/local/share/emacs/site-lisp/egg/leim-list
/usr/local/share/emacs/site-lisp/lookup-utils hides 
/usr/local/share/emacs/site-lisp/lookup/lookup-utils
/usr/local/share/emacs/site-lisp/lookup-vars hides 
/usr/local/share/emacs/site-lisp/lookup/lookup-vars
/usr/local/share/emacs/site-lisp/ndkks hides 
/usr/local/share/emacs/site-lisp/lookup/ndkks
/usr/local/share/emacs/site-lisp/stem-english hides 
/usr/local/share/emacs/site-lisp/lookup/stem-english
/usr/local/share/emacs/site-lisp/sdicf hides 
/usr/local/share/emacs/site-lisp/lookup/sdicf
/usr/local/share/emacs/site-lisp/ndict hides 
/usr/local/share/emacs/site-lisp/lookup/ndict
/usr/local/share/emacs/site-lisp/lookup-content hides 
/usr/local/share/emacs/site-lisp/lookup/lookup-content
/usr/local/share/emacs/site-lisp/lookup hides 
/usr/local/share/emacs/site-lisp/lookup/lookup
/usr/local/share/emacs/site-lisp/ndspell hides 
/usr/local/share/emacs/site-lisp/lookup/ndspell
/usr/local/share/emacs/site-lisp/ndeb hides 
/usr/local/share/emacs/site-lisp/lookup/ndeb
/usr/local/share/emacs/site-lisp/lookup-types hides 
/usr/local/share/emacs/site-lisp/lookup/lookup-types
/usr/local/share/emacs/site-lisp/ndsrd hides 
/usr/local/share/emacs/site-lisp/lookup/ndsrd
/usr/local/share/emacs/site-lisp/ndcookie hides 
/usr/local/share/emacs/site-lisp/lookup/ndcookie
/usr/local/share/emacs/site-lisp/lookup-select hides 
/usr/local/share/emacs/site-lisp/lookup/lookup-select
/usr/local/share/emacs/site-lisp/ndic hides 
/usr/local/share/emacs/site-lisp/lookup/ndic
/usr/local/share/emacs/site-lisp/ndtp hides 
/usr/local/share/emacs/site-lisp/lookup/ndtp
/usr/local/share/emacs/site-lisp/anthy/anthy hides 
/usr/local/share/emacs/site-lisp/egg/egg/anthy
/usr/local/share/emacs/site-lisp/anthy/leim-list hides 
/usr/local/work/emacs/work/leim/leim-list
/usr/local/share/emacs/site-lisp/egg/its/thai hides 
/usr/local/work/emacs/work/lisp/language/thai
/usr/local/share/emacs/site-lisp/egg/its/greek hides 
/usr/local/work/emacs/work/lisp/language/greek
/usr/local/work/emacs/work/lisp/language/thai-word hides ~/emacslisp/thai-word
/usr/local/work/emacs/work/lisp/textmodes/tex-mode hides ~/emacslisp/tex-mode
/usr/local/work/emacs/work/lisp/textmodes/table hides ~/emacslisp/table
/usr/local/work/emacs/work/lisp/emacs-lisp/syntax hides ~/emacslisp/syntax
/usr/local/work/emacs/work/lisp/progmodes/prolog hides ~/emacslisp/prolog

Features:
(newcomment shadow sort gnus-util mail-extr message sendmail
regexp-opt rfc822 mml mml-sec mm-decode mm-bodies mm-encode
mail-parse rfc2231 mailabbrev gmm-utils mailheader emacsbug
pp help-fns derived cl multi-isearch vc-bzr sha1 hex-util
help-mode easymenu view debug apropos lookup lookup-types
lookup-utils lookup-vars evi evi-mule time rmail-sa rmailsum
rmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr
mail-utils japan-util tooltip ediff-hook vc-hooks
lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset
image fringe lisp-mode register page menu-bar rfn-eshadow
timer select scroll-bar mouse jit-lock font-lock syntax
facemenu font-core frame cham georgian utf-8-lang misc-lang
vietnamese tibetan thai tai-viet lao korean japanese hebrew
greek romanian slovak czech european ethiopic indian
cyrillic chinese case-table epa-hook jka-cmpr-hook help
simple abbrev loaddefs button minibuffer faces cus-face
files text-properties overlay md5 base64 format env
code-pages mule custom widget hashtable-print-readable
backquote make-network-process dbusbind dynamic-setting
system-font-setting font-render-setting move-toolbar gtk
x-toolkit x multi-tty emacs)