From b0a37e7514f2e08a9a8315cc68add4f0a53ed2af Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Sat, 18 Apr 2020 07:32:53 +0000
Subject: Bring back previons fix to only redraw panes that need it after a
 redraw is deferred, but clear the pane flags when they are actually redrawn
 rather than every time.

---
 tty.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'tty.c')

diff --git a/tty.c b/tty.c
index 92827f5d..cdfedf6c 100644
--- a/tty.c
+++ b/tty.c
@@ -944,6 +944,7 @@ tty_fake_bce(const struct tty *tty, struct window_pane *wp, u_int bg)
 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 @@ tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
 	 * 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 @@ tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *),
 	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);
-- 
cgit