fix for emacs23

emacs.el

@@ -2097,6 +2097,12 @@ this is test, does not rename files"
               (concat my-system-info
                       (ad-get-arg 0))))
 
+(when (< emacs-major-version 24)
+  (defadvice completing-read (before info-in-prompt activate)
+    (ad-set-arg 0
+                (concat my-system-info
+                        (ad-get-arg 0)))))
+
 ;; (defadvice completing-read (before info-in-prompt activate)
 ;;   (ad-set-arg 0
 ;;               (concat my-system-info