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Dont rewrap text in the alternate screen buffer

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Avoids flicker during live resize with no resize_debounce_time. See
https://github.com/kovidgoyal/kitty/discussions/9142 for discussion.
This commit is contained in:
Kovid Goyal
2025-11-26 10:29:12 +05:30
parent 9e918547e8
commit 6db24b66fa
5 changed files with 109 additions and 3 deletions
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22
kitty_tests/multicell.py
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@@ -643,6 +643,28 @@ def test_multicell(self: TestMulticell) -> None:
ac(x, -1, is_multicell=True, x=x-2, y=0, text='' if x > 2 else 'B')
ac(x, 0, is_multicell=True, x=x-2, y=1, text='')
# resize without rewrap (alt screen)
s = self.create_screen(lines=6, cols=6)
s.toggle_alt_screen()
def reset_alt():
s.reset()
s.resize(6, 6)
s.toggle_alt_screen()
multicell(s, 'XY', scale=3)
s.resize(6, 5)
for y in range(3):
for x in range(3):
ac(x, y, is_multicell=True, text='X' if x == 0 and y == 0 else '')
for x in range(3, 5):
ac(x, y, is_multicell=False, text='')
reset_alt()
multicell(s, 'XY', scale=3)
s.resize(2, 6)
for y in range(s.lines):
for x in range(s.columns):
ac(x, y, is_multicell=False, text='')
# selections
s = self.create_screen(lines=5, cols=8)