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vim-patch:9.0.1981: not being able to scroll up in diff mode (#25506)

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Problem:  Cannot scroll up in diff mode with many filler lines and zero
          'scrolloff'.
Solution: Invalidate w_cline_row before calling comp_botline().

closes: vim/vim#13256

0583491277
This commit is contained in:
zeertzjq 2023-10-05 07:36:14 +08:00 committed by GitHub
parent 3079fa1f9f
commit d7a240b1e9
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 38 additions and 2 deletions
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4
src/nvim/move.c
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@ -2455,11 +2455,11 @@ int onepage(Direction dir, long count)
if (curwin->w_topfill == loff.fill) {
curwin->w_topline--;
curwin->w_topfill = 0;
curwin->w_valid &= ~(VALID_WROW|VALID_CROW);
}
comp_botline(curwin);
curwin->w_cursor.lnum = curwin->w_botline - 1;
curwin->w_valid &=
~(VALID_WCOL | VALID_CHEIGHT | VALID_WROW | VALID_CROW);
curwin->w_valid &= ~(VALID_WCOL|VALID_CHEIGHT|VALID_WROW|VALID_CROW);
} else {
curwin->w_topline = loff.lnum;
curwin->w_topfill = loff.fill;

36
test/old/testdir/test_diffmode.vim
View File

@ -1616,6 +1616,42 @@ func Test_diff_scroll_wrap_on()
call assert_equal(1, winsaveview().topline)
normal! j
call assert_equal(2, winsaveview().topline)
bwipe!
bwipe!
endfunc
func Test_diff_scroll_many_filler()
20new
vnew
call setline(1, ['^^^', '^^^', '$$$', '$$$'])
diffthis
setlocal scrolloff=0
wincmd p
call setline(1, ['^^^', '^^^'] + repeat(['###'], 41) + ['$$$', '$$$'])
diffthis
setlocal scrolloff=0
wincmd p
redraw
" Note: need a redraw after each scroll, otherwise the test always passes.
normal! G
redraw
call assert_equal(3, winsaveview().topline)
call assert_equal(18, winsaveview().topfill)
exe "normal! \<C-B>"
redraw
call assert_equal(3, winsaveview().topline)
call assert_equal(19, winsaveview().topfill)
exe "normal! \<C-B>"
redraw
call assert_equal(2, winsaveview().topline)
call assert_equal(0, winsaveview().topfill)
exe "normal! \<C-B>"
redraw
call assert_equal(1, winsaveview().topline)
call assert_equal(0, winsaveview().topfill)
bwipe!
bwipe!
endfunc