From afa9ac0cfc05ac58b4cb03f88cab7069fd137266 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Ekl=C3=B6f?= <daniel@ekloef.se>
Date: Mon, 24 Feb 2020 18:39:58 +0100
Subject: [PATCH] sixel: ensure 'start' row is not outside the grid row range

---
 sixel.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sixel.c b/sixel.c
index d8a494e1..caa31429 100644
--- a/sixel.c
+++ b/sixel.c
@@ -143,7 +143,9 @@ sixel_unhook(struct terminal *term)
         .height = term->sixel.image.height,
         .rows = (term->sixel.image.height + term->cell_height - 1) / term->cell_height,
         .grid = term->grid,
-        .pos = (struct coord){term->cursor.point.col, term->grid->offset + term->cursor.point.row},
+        .pos = (struct coord){
+            term->cursor.point.col,
+            (term->grid->offset + term->cursor.point.row) & (term->grid->num_rows - 1)},
     };
 
     LOG_DBG("generating %dx%d pixman image", image.width, image.height);