* lisp/progmodes/ruby-mode.el (auto-mode-alist): Consolidate different

entries into one regexp and add more *file-s.

lisp/ChangeLog

@@ -3,6 +3,8 @@
 	* progmodes/ruby-mode.el (ruby-font-lock-keywords): Highlight
 	keyword-like methods on Kernel and Module with
 	font-lock-builtin-face.
+	(auto-mode-alist): Consolidate different entries into one regexp
+	and add more *file-s.
 
 2013-06-21  Stephen Berman  <stephen.berman@gmx.net>
 

lisp/progmodes/ruby-mode.el

@@ -1867,11 +1867,15 @@ The variable `ruby-indent-level' controls the amount of indentation.
 ;;; Invoke ruby-mode when appropriate
 
 ;;;###autoload
-(add-to-list 'auto-mode-alist (cons (purecopy "\\.rb\\'") 'ruby-mode))
-;;;###autoload
-(add-to-list 'auto-mode-alist (cons (purecopy "Rakefile\\'") 'ruby-mode))
-;;;###autoload
-(add-to-list 'auto-mode-alist (cons (purecopy "\\.gemspec\\'") 'ruby-mode))
+(add-to-list 'auto-mode-alist
+             (cons (purecopy (concat "\\(?:\\."
+                                     (regexp-opt '("rb" "ru" "rake" "thor"
+                                                   "jbuilder" "gemspec"))
+                                     "\\|/"
+                                     (regexp-opt '("Gemfile" "Rakefile"
+                                                   "Capfile" "Thorfile"
+                                                   "Vagrantfile"))
+                                     "\\)\\'")) 'ruby-mode))
 
 ;;;###autoload
 (dolist (name (list "ruby" "rbx" "jruby" "ruby1.9" "ruby1.8"))