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sixel: fix row height calculation in resize_vertically()

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In resize_vertically(), we assumed a sixel is 6 pixels tall. This is
mostly true, but not for non-1:1 sixels. Or, to be more precise, not
for sixels where 'pan' != 1.

This caused us to allocate too little backing memory, resulting in a
crash when we later tried to write to the image.
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Daniel Eklöf 2024-03-04 16:29:04 +01:00
parent 702d3ae6ca
commit 8ff8ec5b70
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2 changed files with 4 additions and 1 deletions
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CHANGELOG.md
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@ -131,6 +131,8 @@
* Pressing a modifier key while the kitty keyboard protocol is enabled
no longer resets the viewport, or clears the selection.
* Crash when failing to load an xcursor image ([#1624][1624]).
* Crash when resizing a dynamically sized sixel (no raster
attributes), with a non-1:1 aspect ratio.
[1531]: https://codeberg.org/dnkl/foot/issues/1531
[1573]: https://codeberg.org/dnkl/foot/issues/1573