bug#16190: 23.4; M-x captialize-word works incorrectly

[Caleb Wakeman <cdw1992@twcny.rr.com>]

With point in the middle of a word, I ran M-x capitalize-word.  Rather 
than capitalize the first letter of the word, as I expected, it 
capitalized the character at point and moved point to the end of the 
word.  (Specifically, rather than change `word' (wo-!-rd) to `Word', it 
changed it to `woRd'.)

I checked this in the message edit buffer, and it seems pretty 
consistent to me.

I was able to reproduce this with M-c as well as M-x capitalize-word (as 
well as ESC c and ESC x capitalize word on the Mac mentioned below).

I was also able to reproduce this in (apparently vanilla?) GNU Emacs 
22.1.1 under Mac OS X (tested in the scratch buffer).

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about debugging Emacs, please read the file 
/usr/share/emacs/23.4/etc/DEBUG. In GNU Emacs 23.4.1 
(x86_64-pc-linux-gnu, GTK+ Version 2.24.12)  of 2012-09-22 on allspice, 
modified by Debian Windowing system distributor `The X.Org Foundation', 
version 11.0.11303000 configured using `configure  '--build' 
'x86_64-linux-gnu' '--build' 'x86_64-linux-gnu' '--prefix=/usr' 
'--sharedstatedir=/var/lib' '--libexecdir=/usr/lib' 
'--localstatedir=/var/lib' '--infodir=/usr/share/info' 
'--mandir=/usr/share/man' '--with-pop=yes' 
'--enable-locallisppath=/etc/emacs23:/etc/emacs:/usr/local/share/emacs/23.4/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.4/site-lisp:/usr/share/emacs/site-lisp' 
'--with-crt-dir=/usr/lib/x86_64-linux-gnu' '--with-x=yes' 
'--with-x-toolkit=gtk' '--with-toolkit-scroll-bars' 
'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2 -fstack-protector 
--param=ssp-buffer-size=4 -Wformat -Werror=format-security -Wall 
-DDEBIAN -O2' 'CPPFLAGS=-D_FORTIFY_SOURCE=2'' 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: Text Minor modes in 
effect:   longlines-mode: t   iswitchb-mode: t 
minibuffer-depth-indicate-mode: t   icicle-mode: t   server-mode: t 
global-whitespace-mode: t   display-battery-mode: t   tooltip-mode: t 
mouse-wheel-mode: t   tool-bar-mode: t   use-hard-newlines: t 
menu-bar-mode: t   file-name-shadow-mode: t   global-font-lock-mode: t 
  font-lock-mode: t   blink-cursor-mode: t   auto-encryption-mode: t 
auto-compression-mode: t   size-indication-mode: t   line-number-mode: t 
   transient-mark-mode: t Recent input: T M L , SPC o r SPC P D 
<backspace> <backspace> <backspace>  <backspace> <backspace> <backspace> 
<backspace> <backspace>  <backspace> <backspace> <backspace> <backspace> 
<backspace>  SPC o r SPC H T M L , SPC t h a n <backspace> <backspace> 
e n SPC a n y o n e SPC w o u l d SPC b e SPC a b l  e SPC t o SPC r e a 
d SPC i t . <help-echo> <help-echo>  <down-mouse-1> <mouse-1> ( e 
<backspace> E v e n SPC  p e o p l e SPC w i t h SPC i <backspace> M i c 
r o  s o f t SPC w o r d SPC m a y SPC n o t SPC b e SPC  a b l e SPC t 
o SPC r e a d SPC i t , <backspace> <backspace>  <backspace> t h e SPC f 
i l e , SPC i f SPC <help-echo>  <help-echo> <down-mouse-1> <help-echo> 
<mouse-movement>  <mouse-movement> <drag-mouse-1> i t SPC w a s SPC m  a 
d e SPC w i t h SPC a SPC n e w e r SPC v e r s i  o n SPC o f SPC w o r 
<backspace> <backspace> <backspace>  W r o <backspace> <backspace> o r d 
SPC t h a n SPC  t h e y SPC h a v e . ) SPC SPC <down-mouse-1> 
<mouse-1>  <help-echo> C-x C-f <M-backspace> G o <return> SPC  C-_ M-v 
C-v C-v C-x C-f l i b <tab> <return> C-x k  <return> C-x k <return> 
<down-mouse-1> <mouse-1> <menu>  c a p t i <backspace> <backspace> i t 
<tab> - w o <tab>  <return> C-_ M-c C-_ M-b M-c C-n C-n C-n C-n <menu> 
r e p o r t - e m <tab> <return> Recent messages: Auto-saving...done 
Auto-saving...done Auto-saving...done Auto-saving...done 
Auto-saving...done Undo! call-interactively: Beginning of buffer 
call-interactively: End of buffer Auto-saving...done Undo! [2 times] 
Load-path shadows: ~/.emacslisp/icicles/lacarte hides 
~/.emacslisp/lacarte /usr/share/emacs/23.4/site-lisp/debian-startup 
hides /usr/share/emacs/site-lisp/debian-startup 
/usr/share/emacs23/site-lisp/dictionaries-common/ispell hides 
/usr/share/emacs/23.4/lisp/textmodes/ispell 
/usr/share/emacs23/site-lisp/dictionaries-common/flyspell hides 
/usr/share/emacs/23.4/lisp/textmodes/flyspell 
/usr/share/emacs23/site-lisp/latex-cjk-thai/thai-word hides 
/usr/share/emacs/23.4/lisp/language/thai-word 
/usr/share/emacs23/site-lisp/auctex/tex-jp hides 
/usr/share/emacs/site-lisp/auctex/tex-jp 
/usr/share/emacs23/site-lisp/auctex/tex-fold hides 
/usr/share/emacs/site-lisp/auctex/tex-fold 
/usr/share/emacs23/site-lisp/auctex/tex hides 
/usr/share/emacs/site-lisp/auctex/tex 
/usr/share/emacs23/site-lisp/auctex/preview hides 
/usr/share/emacs/site-lisp/auctex/preview 
/usr/share/emacs23/site-lisp/auctex/bib-cite hides 
/usr/share/emacs/site-lisp/auctex/bib-cite 
/usr/share/emacs23/site-lisp/auctex/tex-mik hides 
/usr/share/emacs/site-lisp/auctex/tex-mik 
/usr/share/emacs23/site-lisp/auctex/context-nl hides 
/usr/share/emacs/site-lisp/auctex/context-nl 
/usr/share/emacs23/site-lisp/auctex/multi-prompt hides 
/usr/share/emacs/site-lisp/auctex/multi-prompt 
/usr/share/emacs23/site-lisp/auctex/latex hides 
/usr/share/emacs/site-lisp/auctex/latex 
/usr/share/emacs23/site-lisp/auctex/font-latex hides 
/usr/share/emacs/site-lisp/auctex/font-latex 
/usr/share/emacs23/site-lisp/auctex/toolbar-x hides 
/usr/share/emacs/site-lisp/auctex/toolbar-x 
/usr/share/emacs23/site-lisp/auctex/tex-font hides 
/usr/share/emacs/site-lisp/auctex/tex-font 
/usr/share/emacs23/site-lisp/auctex/tex-bar hides 
/usr/share/emacs/site-lisp/auctex/tex-bar 
/usr/share/emacs23/site-lisp/auctex/prv-emacs hides 
/usr/share/emacs/site-lisp/auctex/prv-emacs 
/usr/share/emacs23/site-lisp/auctex/tex-style hides 
/usr/share/emacs/site-lisp/auctex/tex-style 
/usr/share/emacs23/site-lisp/auctex/context hides 
/usr/share/emacs/site-lisp/auctex/context 
/usr/share/emacs23/site-lisp/auctex/tex-info hides 
/usr/share/emacs/site-lisp/auctex/tex-info 
/usr/share/emacs23/site-lisp/auctex/texmathp hides 
/usr/share/emacs/site-lisp/auctex/texmathp 
/usr/share/emacs23/site-lisp/auctex/context-en hides 
/usr/share/emacs/site-lisp/auctex/context-en 
/usr/share/emacs23/site-lisp/auctex/plain-tex hides 
/usr/share/emacs/site-lisp/auctex/plain-tex 
/usr/share/emacs23/site-lisp/auctex/tex-buf hides 
/usr/share/emacs/site-lisp/auctex/tex-buf Features: (shadow sort message 
sendmail ecomplete rfc822 mml mml-sec password-cache mm-decode mm-bodies 
mm-encode mailcap mail-parse rfc2231 rfc2047 rfc2045 qp ietf-drums 
mailabbrev nnheader gnus-util netrc mm-util mail-prsvr gmm-utils 
mailheader canlock sha1 hex-util hashcash mail-utils emacsbug mail-extr 
ispell debug jka-compr multi-isearch vc-hg face-remap image-file org-wl 
org-w3m org-vm org-rmail org-mhe org-mew org-irc org-jsinfo org-infojs 
org-html org-exp org-exp-blocks org-agenda org-info org-gnus org-bibtex 
org-bbdb longlines iswitchb two-column mb-depth info bookmark pp icicles 
icicles-mode icicles-cmd2 icicles-cmd1 cus-edit icicles-mcmd help-mode 
view image-dired format-spec dired regexp-opt doremi ring+ ring 
icicles-fn icicles-var icicles-opt ffap wid-edit thingatpt icicles-face 
hexrgb remember org-remember org-datetree org byte-opt warnings bytecomp 
byte-compile org-footnote org-src org-list org-faces org-compat org-macs 
easymenu time-date noutline outline easy-mmode edmacro kmacro disp-table 
saveplace uniquify advice help-fns advice-preload server whitespace 
battery cus-start cus-load slime-autoloads magit-install bbdb-autoloads 
preview-latex tex-site auto-loads tooltip ediff-hook vc-hooks 
lisp-float-type mwheel x-win x-dnd font-setting tool-bar dnd fontset 
image fringe lisp-mode register page menu-bar rfn-eshadow timer select 
scroll-bar mldrag 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 
system-font-setting font-render-setting gtk x-toolkit x multi-tty emacs)