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vim-patch:9.1.1385: inefficient loop for 'nosmoothscroll' scrolling (#33992)

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Problem:  Loop that ensures "w_skipcol" is zero with 'nosmoothscroll'
	  for (half)-page scrolling is inefficient.
Solution: Calculate the required "count" instead of looping until
	  "w_skipcol" is zero (Luuk van Baal).

acf0ebe8a8
(cherry picked from commit d539a952da)
---------

Co-authored-by: luukvbaal <luukvbaal@gmail.com>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
This commit is contained in:
neovim-backports[bot]
2025-05-13 10:43:25 +02:00
committed by GitHub
parent 3e83a33108
commit f623fad9c4
2 changed files with 18 additions and 4 deletions
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9
test/old/testdir/test_normal.vim
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@@ -4339,4 +4339,13 @@ func Test_scroll_longline_scrolloff()
bwipe!
endfunc
" Benchmark test for Ctrl-F with 'nosmoothscroll'
func Test_scroll_longline_benchmark()
call setline(1, ['foo'->repeat(20000)] + [''])
let start = reltime()
exe "normal! \<C-F>"
call assert_inrange(0, 0.1, reltimefloat(reltime(start)))
bwipe!
endfunc
" vim: shiftwidth=2 sts=2 expandtab nofoldenable