===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/tty.c,v
retrieving revision 1.357
retrieving revision 1.358
diff -u -r1.357 -r1.358
--- src/usr.bin/tmux/tty.c	2020/04/18 06:20:50	1.357
+++ src/usr.bin/tmux/tty.c	2020/04/18 07:32:54	1.358
@@ -1,4 +1,4 @@
-/* $OpenBSD: tty.c,v 1.357 2020/04/18 06:20:50 nicm Exp $ */
+/* $OpenBSD: tty.c,v 1.358 2020/04/18 07:32:54 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -944,6 +944,7 @@
 static void
 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
 {
+	struct client		*c = tty->client;
 	struct window_pane	*wp = ctx->wp;
 	struct screen		*s = wp->screen;
 	u_int			 i;
@@ -953,6 +954,7 @@
 	 * likely to be followed by some more scrolling.
 	 */
 	if (tty_large_region(tty, ctx)) {
+		log_debug("%s: %s, large redraw of %%%u", __func__, c->name, wp->id);
 		wp->flags |= PANE_REDRAW;
 		return;
 	}
@@ -1484,6 +1486,14 @@
 	TAILQ_FOREACH(c, &clients, entry) {
 		if (!tty_client_ready(c, wp))
 			continue;
+		if (c->flags & CLIENT_REDRAWPANES) {
+			/*
+			 * Redraw is already deferred to redraw another pane -
+			 * redraw this one also when that happens.
+			 */
+			wp->flags |= PANE_REDRAW;
+			break;
+		}
 
 		ctx->bigger = tty_window_offset(&c->tty, &ctx->ox, &ctx->oy,
 		    &ctx->sx, &ctx->sy);