From 6f6bcbc1bc5a9378bd16bd300ec89ddb35d9f863 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Ekl=C3=B6f?= <daniel@ekloef.se>
Date: Wed, 10 Mar 2021 20:31:21 +0100
Subject: [PATCH] sixel: decgra: set max-non-empty-row-no when resizing the
 image
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This ensures we don’t trim off bottom rows in unhook().

This could happen either because the application used “Set Raster
Attributes” to configure an image size larger than the sixels later
emitted.

Or, the last sixel row contains empty pixel rows.

In either case, the size set with “Set Raster Attributes” defines
the *minimum* image size; the image may still end up being larger.
---
 sixel.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sixel.c b/sixel.c
index 2c440a6d..776750a2 100644
--- a/sixel.c
+++ b/sixel.c
@@ -1145,6 +1145,7 @@ decgra(struct terminal *term, uint8_t c)
             ph <= term->sixel.max_height && pv <= term->sixel.max_width)
         {
             resize(term, ph, pv);
+            term->sixel.max_non_empty_row_no = pv - 1;
         }
 
         term->sixel.state = SIXEL_DECSIXEL;