 
 (defun rdebug-display-original-frame-configuration ()
   "Display the layout of windows prior to starting the ruby debugger."
+  (interactive)
   (when rdebug-original-frame-configuration
     (set-frame-configuration rdebug-original-frame-configuration)
     (message

  "Major mode for rdebug variables.

\\{rdebug-variables-mode-map}"
  ; (kill-all-local-variables)
  (interactive "")
  (kill-all-local-variables)
  (setq major-mode 'rdebug-variables-mode)

    (define-key menu [quit] '("Quit"   . rdebug-delete-frame-or-window))
    (define-key menu [goto] '("Goto"   . rdebug-goto-breakpoint))
    (define-key menu [delete] '("Delete" . rdebug-delete-breakpoint))
    (define-key menu [toggle] '("Toggle" . rdebug-toggle-breakpoint))
    (define-key map [mouse-2] 'rdebug-goto-breakpoint-mouse)
    (define-key map " " 'rdebug-toggle-breakpoint)
    (define-key map [? ] 'rdebug-toggle-breakpoint)
    (define-key map [(control m)] 'rdebug-goto-breakpoint)
    (define-key map [?d] 'rdebug-delete-breakpoint)
    map)
