From 1198eed6326ba384093e34c348c843f59e841d20 Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicholas.marriott@gmail.com>
Date: Fri, 25 Apr 2025 08:26:26 +0100
Subject: [PATCH] Currently the DCS dispatcher detects Sixel sequences based
 entirely on the final character of the sequence, ignoring any intermediates.
 This means that other DCS sequences with a q final (like DECRQSS), can be
 mistakenly interpreted as Sixel. Add a check to make sure there are no
 intermediates before dispatching potential Sixel sequences. From James
 Holderness in GitHub issue 4488.

---
 input.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/input.c b/input.c
index 2c7b77b8..969f21d3 100644
--- a/input.c
+++ b/input.c
@@ -2384,7 +2384,7 @@ input_dcs_dispatch(struct input_ctx *ictx)
 
 #ifdef ENABLE_SIXEL
 	w = wp->window;
-	if (buf[0] == 'q') {
+	if (buf[0] == 'q' && ictx->interm_len == 0) {
 		if (input_split(ictx) != 0)
 			return (0);
 		p2 = input_get(ictx, 1, 0, 0);