bug#6142: 23.1; ruby-mode defgroup

[Kevin Ryde]

I noticed various ruby-mode defcustoms are in a `ruby' group but there
doesn't seem to be a `defgroup ruby'.  In particular I hoped such a ruby
group might be reachable from the `languages' group along with other
programming languages.

2010-05-09  Kevin Ryde  <user42@zip.com.au>

        * progmodes/ruby-mode.el: Add defgroup ruby.

--- ruby-mode.el.~1.11.~        2009-10-28 09:24:04.000000000 +1100
+++ ruby-mode.el        2010-05-09 10:10:06.000000000 +1000
@@ -204,6 +204,15 @@
     table)
   "Syntax table to use in Ruby mode.")
 
+(defgroup ruby nil "Ruby"
+  ;; No :prefix stripping, because taking the "ruby" off
+  ;; `ruby-indent-tabs-mode' and `ruby-comment-column' would leave
+  ;; them displaying the same as the plain `indent-tabs-mode' and
+  ;; `comment-column' whereas they're in fact distinct settings
+  ;; (affecting only ruby-mode).
+  :prefix ""
+  :group 'languages)
+
 (defcustom ruby-indent-tabs-mode nil
   "Indentation can insert tabs in Ruby mode if this is non-nil."
   :type 'boolean :group 'ruby)


In GNU Emacs 23.1.1 (i486-pc-linux-gnu, GTK+ Version 2.16.5)
 of 2009-09-14 on raven, modified by Debian
configured using `configure  '--build=i486-linux-gnu' '--host=i486-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/23.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.1/site-lisp:/usr/share/emacs/site-lisp:/usr/share/emacs/23.1/leim'
 '--with-x=yes' '--with-x-toolkit=gtk' '--with-toolkit-scroll-bars' 
'build_alias=i486-linux-gnu' 'host_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN -g 
-O2' 'LDFLAGS=-g' '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_AU
  value of $XMODIFIERS: nil
  locale-coding-system: iso-latin-1-unix
  default-enable-multibyte-characters: t