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Document test description format

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Kovid Goyal
2025-04-11 12:03:06 +05:30
parent 342ac57e63
commit dbc88d8a3a
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docs/text-sizing-protocol.rst
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@@ -353,6 +353,8 @@ The algorithm for splitting text into cells
.. note::
kitty comes with a utility to test terminal compliance with this algorithm.
Install kitty and run: ``kitten __width_test__`` in any terminal to test it.
This uses tests published by the Unicode consortium, `GraphemeBreakTest.txt
<https://www.unicode.org/Public/UCD/latest/ucd/auxiliary/GraphemeBreakTest.txt>`__.
Here, we specify how a terminal must split up text into cells, where a cell is
a width one unit in the character grid the terminal displays.