From 531daba584f55fed87ec87986a7f0b497c14626f Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Wed, 29 Jan 2020 15:07:49 +0000
Subject: [PATCH] Do not send DA and DSR again if already have a response.

---
 input.c | 1 +
 tty.c   | 6 ++++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/input.c b/input.c
index d7071bfe..ea9320d1 100644
--- a/input.c
+++ b/input.c
@@ -773,6 +773,7 @@ input_save_state(struct input_ctx *ictx)
 	ictx->old_mode = s->mode;
 }
 
+/* Restore screen state. */
 static void
 input_restore_state(struct input_ctx *ictx)
 {
diff --git a/tty.c b/tty.c
index 54c3be30..3bab556d 100644
--- a/tty.c
+++ b/tty.c
@@ -338,8 +338,10 @@ tty_start_tty(struct tty *tty)
 			tty->flags |= TTY_FOCUS;
 			tty_puts(tty, "\033[?1004h");
 		}
-		tty_puts(tty, "\033[c\033[1337n"); /* DA and DSR */
-
+		if (~tty->flags & TTY_HAVEDA)
+			tty_puts(tty, "\033[c");
+		if (~tty->flags & TTY_HAVEDSR)
+			tty_puts(tty, "\033[1337n");
 	} else
 		tty->flags |= (TTY_HAVEDA|TTY_HAVEDSR);