(draw_fringe_bitmap): Don't calculate default overlay arrow

bitmap here, but ...
(update_window_fringes): ... here, so we can test if it has changed.

diff --git a/src/fringe.c b/src/fringe.c
index 3048be2d707fd6de52d81280cd3685062cbbdc89..48fb11810ed4e6f2e272339de07cfb23889397b2 100644 (file)
--- a/src/fringe.c
+++ b/src/fringe.c
@@ -866,10 +866,7 @@ draw_fringe_bitmap (w, row, left_p)
   draw_fringe_bitmap_1 (w, row, left_p, overlay, NO_FRINGE_BITMAP);
 
   if (left_p && row->overlay_arrow_bitmap != NO_FRINGE_BITMAP)
-    draw_fringe_bitmap_1 (w, row, 1, 1,
-                         (row->overlay_arrow_bitmap < 0
-                          ? get_logical_fringe_bitmap (w, Qoverlay_arrow, 0, 0)
-                          : row->overlay_arrow_bitmap));
+    draw_fringe_bitmap_1 (w, row, 1, 1, row->overlay_arrow_bitmap);
 }
 
 
@@ -1151,6 +1148,9 @@ update_window_fringes (w, keep_current_p)
            }
        }
 
+      if (row->overlay_arrow_bitmap < 0)
+       row->overlay_arrow_bitmap = get_logical_fringe_bitmap (w, Qoverlay_arrow, 0, 0);
+
       if (row->overlay_arrow_bitmap != cur->overlay_arrow_bitmap)
        {
          redraw_p = row->redraw_fringe_bitmaps_p = cur->redraw_fringe_bitmaps_p = 1;