1 files changed, 3 insertions, 0 deletions

diff --git a/src/buffer.h b/src/buffer.h
index 76cbf0ba4c0..c19e4f30846 100644
--- a/src/buffer.h
+++ b/src/buffer.h
@@ -386,6 +386,9 @@ struct buffer
     /* This holds the point value before the last scroll operation.
        Explicitly setting point sets this to nil.  */
     Lisp_Object point_before_scroll;
+
+    /* Truename of the visited file, or nil.  */
+    Lisp_Object file_truename;
   };
 
 /* This points to the current buffer.  */