===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/screen-redraw.c,v
retrieving revision 1.65
retrieving revision 1.66
diff -u -r1.65 -r1.66
--- src/usr.bin/tmux/screen-redraw.c	2019/07/24 21:16:17	1.65
+++ src/usr.bin/tmux/screen-redraw.c	2020/03/24 08:09:44	1.66
@@ -1,4 +1,4 @@
-/* $OpenBSD: screen-redraw.c,v 1.65 2019/07/24 21:16:17 nicm Exp $ */
+/* $OpenBSD: screen-redraw.c,v 1.66 2020/03/24 08:09:44 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -482,6 +482,8 @@
 	u_int			 type, x = ctx->ox + i, y = ctx->oy + j;
 	int			 flag, pane_status = ctx->pane_status;
 
+	if (c->overlay_check != NULL && !c->overlay_check(c, x, y))
+		return;
 	type = screen_redraw_check_cell(c, x, y, pane_status, &wp);
 	if (type == CELL_INSIDE)
 		return;