lisp/ChangeLog (2013-06-05): Fix file name

[gnus] / lisp / dgnushack.el

diff --git a/lisp/dgnushack.el b/lisp/dgnushack.el
index 19f253a..be67c51 100644 (file)
--- a/lisp/dgnushack.el
+++ b/lisp/dgnushack.el
@@ -1,5 +1,5 @@
 ;;; dgnushack.el --- a hack to set the load path for byte-compiling
-;; Copyright (C) 1994-2012 Free Software Foundation, Inc.
+;; Copyright (C) 1994-2013 Free Software Foundation, Inc.
 
 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;; Version: 4.19
@@ -565,4 +565,26 @@ but which should be robust in the unexpected case that an error is signaled."
           (progn ,@body)
         (error (message "Error: %S" ,err) nil)))))
 
+;; XEmacs's `define-obsolete-variable-alias' takes only two arguments:
+;; (define-obsolete-variable-alias OLDVAR NEWVAR)
+(condition-case nil
+    (progn
+      (defvar dgnushack-obsolete-name nil)
+      (defvar dgnushack-current-name nil)
+      (unwind-protect
+         (define-obsolete-variable-alias
+           'dgnushack-obsolete-name 'dgnushack-current-name "0")
+       (makunbound 'dgnushack-obsolete-name)
+       (makunbound 'dgnushack-current-name)))
+  (wrong-number-of-arguments
+   (defadvice define-obsolete-variable-alias (around ignore-rest-args
+                                                    (oldvar newvar &rest args)
+                                                    activate)
+     "Ignore arguments other than the 1st and the 2nd ones."
+     ad-do-it)
+   (put 'define-obsolete-variable-alias 'byte-optimizer
+       (lambda (form)
+         (setcdr (nthcdr 2 form) nil)
+         form))))
+
 ;;; dgnushack.el ends here