From 280fe77eddc877f3d0a58ad3195a1e5856ac91c4 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Mon, 17 Apr 2023 17:57:35 +0000
Subject: Discard mouse sequences that have the right form but actually are
 invalid (for example have column zero rather than one).

---
 tty-keys.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'tty-keys.c')

diff --git a/tty-keys.c b/tty-keys.c
index 5677f133..25956c4d 100644
--- a/tty-keys.c
+++ b/tty-keys.c
@@ -1008,7 +1008,8 @@ tty_keys_extended_key(struct tty *tty, const char *buf, size_t len,
 
 /*
  * Handle mouse key input. Returns 0 for success, -1 for failure, 1 for partial
- * (probably a mouse sequence but need more data).
+ * (probably a mouse sequence but need more data), -2 if an invalid mouse
+ * sequence.
  */
 static int
 tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size,
@@ -1069,7 +1070,7 @@ tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size,
 		if (b < MOUSE_PARAM_BTN_OFF ||
 		    x < MOUSE_PARAM_POS_OFF ||
 		    y < MOUSE_PARAM_POS_OFF)
-			return (-1);
+			return (-2);
 		b -= MOUSE_PARAM_BTN_OFF;
 		x -= MOUSE_PARAM_POS_OFF;
 		y -= MOUSE_PARAM_POS_OFF;
@@ -1111,7 +1112,7 @@ tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size,
 
 		/* Check and return the mouse input. */
 		if (x < 1 || y < 1)
-			return (-1);
+			return (-2);
 		x--;
 		y--;
 		b = sgr_b;
-- 
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