(struct frame): New member already_hscrolled_p.

1 files changed, 6 insertions, 2 deletions

diff --git a/src/frame.h b/src/frame.h
index d70b38d3203..a2f5fc2fde5 100644
--- a/src/frame.h
+++ b/src/frame.h
@@ -463,6 +463,10 @@ struct frame
      realized.  Reset to zero whenever the default face changes.
      Used to see the difference between a font change and face change.  */
   unsigned default_face_done_p : 1;
+
+  /* Set to non-zero if this frame has already been hscrolled during
+     current redisplay.  */
+  unsigned already_hscrolled_p : 1;
 };
 
 #ifdef MULTI_KBOARD
@@ -821,13 +825,13 @@ extern Lisp_Object selected_frame;
                         Display-related Macros
  ***********************************************************************/
 
-/* Canonical y-unit on frame F.  
+/* Canonical y-unit on frame F.
    This value currently equals the line height of the frame (which is
    the height of the default font of F).  */
 
 #define FRAME_LINE_HEIGHT(F) ((F)->line_height)
 
-/* Canonical x-unit on frame F. 
+/* Canonical x-unit on frame F.
    This value currently equals the average width of the default font of F.  */
 
 #define FRAME_COLUMN_WIDTH(F) ((F)->column_width)