1 files changed, 3 insertions, 0 deletions

diff --git a/lisp/files.el b/lisp/files.el
index 114d45d9dbe..28afd60963f 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -2258,6 +2258,9 @@ the last real save, but optional arg FORCE non-nil means delete anyway."
            (file-error nil))
          (set-buffer-auto-saved))))
 
+(defvar auto-save-hook nil
+  "Normal hook run just before auto-saving.")
+
 (defvar after-save-hook nil
   "Normal hook that is run after a buffer is saved to its file.")