Do not redraw or update mode if nothing has changed.

1 files changed, 5 insertions, 0 deletions

diff --git a/screen-redraw.c b/screen-redraw.c
index 8e74fe97..5ca6024d 100644
--- a/screen-redraw.c
+++ b/screen-redraw.c
@@ -434,7 +434,11 @@ screen_redraw_screen(struct client *c)
 		return;
 
 	flags = screen_redraw_update(c, c->flags);
+	if ((flags & CLIENT_ALLREDRAWFLAGS) == 0)
+		return;
+
 	screen_redraw_set_context(c, &ctx);
+	tty_update_mode(&c->tty, c->tty.mode, NULL);
 	tty_sync_start(&c->tty);
 
 	if (flags & (CLIENT_REDRAWWINDOW|CLIENT_REDRAWBORDERS)) {
@@ -470,6 +474,7 @@ screen_redraw_pane(struct client *c, struct window_pane *wp)
 		return;
 
 	screen_redraw_set_context(c, &ctx);
+	tty_update_mode(&c->tty, c->tty.mode, NULL);
 	tty_sync_start(&c->tty);
 
 	screen_redraw_draw_pane(&ctx, wp);