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fix(api): nvim_open_win respects requested split window size (#35601)

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Problem: requested window size passed to nvim_open_win for splits may be ignored
by win_split_ins if it decides to forcefully equalize window sizes instead (e.g:
in an attempt to make room for the new window).

Solution: try to set the size again if it differs from what was requested.

Co-authored-by: Sean Dewar <6256228+seandewar@users.noreply.github.com>
This commit is contained in:
glepnir
2025-10-04 16:07:27 +08:00
committed by GitHub
parent 96e9041a78
commit 19f5f05ac2
2 changed files with 22 additions and 0 deletions
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15
test/functional/api/window_spec.lua
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@@ -2259,6 +2259,21 @@ describe('API/win', function()
)
eq(true, eval 'nvim_tabpage_is_valid(g:tp)')
end)
it('respects requested size for large splits', function()
command('vsplit')
local win = api.nvim_open_win(0, false, { win = -1, split = 'right', width = 38 })
eq(38, api.nvim_win_get_width(win))
-- No zero-sized windows (e.g: from skipping forced equalization in win_split_ins) if
-- requesting a chonky window; that could lead to crashes!
api.nvim_open_win(0, false, { win = -1, split = 'right', width = 9999 })
eq({ 1, 1, 1, 74 }, eval("range(1, winnr('$'))->map({_, nr -> winwidth(nr)})"))
command('split')
win = api.nvim_open_win(0, false, { win = 0, split = 'below', height = 10 })
eq(10, api.nvim_win_get_height(win))
end)
end)
describe('set_config', function()