Remove multiple entries about re-generating configure.

[bpt/emacs.git] / lisp / diff.el

diff --git a/lisp/diff.el b/lisp/diff.el
index eefe27e..d8de7c2 100644 (file)
--- a/lisp/diff.el
+++ b/lisp/diff.el
@@ -73,6 +73,10 @@ were found."
                      (if (equal 0 code) " (no differences)" "")
                      (current-time-string))))))
 
+(defvar diff-old-file nil)
+(defvar diff-new-file nil)
+(defvar diff-extra-args nil)
+
 ;;;###autoload
 (defun diff (old new &optional switches no-async)
   "Find and display the differences between OLD and NEW files.
@@ -125,9 +129,13 @@ With prefix arg, prompt for diff switches."
        (erase-buffer))
       (buffer-enable-undo (current-buffer))
       (diff-mode)
+      ;; Use below 2 vars for backward-compatibility.
+      (set (make-local-variable 'diff-old-file) old)
+      (set (make-local-variable 'diff-new-file) new)
+      (set (make-local-variable 'diff-extra-args) (list switches no-async))
       (set (make-local-variable 'revert-buffer-function)
-          `(lambda (ignore-auto noconfirm)
-             (diff ',old ',new ',switches ',no-async)))
+          (lambda (ignore-auto noconfirm)
+             (apply 'diff diff-old-file diff-new-file diff-extra-args)))
       (set (make-local-variable 'diff-old-temp-file) old-alt)
       (set (make-local-variable 'diff-new-temp-file) new-alt)
       (setq default-directory thisdir)
@@ -187,5 +195,5 @@ With prefix arg, prompt for diff switches."
 
 (provide 'diff)
 
-;;; arch-tag: 7de2c29b-7ea5-4b85-9b9d-72dd860de2bd
+;; arch-tag: 7de2c29b-7ea5-4b85-9b9d-72dd860de2bd
 ;;; diff.el ends here