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vim-patch:9.1.0082: Redrawing can be improved when deleting lines with 'cursorline'

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Problem:  Redrawing can be improved when deleting lines with 'cursorline'.
Solution: Use smarter invalidation and adjustment.  Remove unnecessary
          UPD_VALID as it is already set at the top of the loop.  Make
          the test for vim/vim#4862 fail without the fix.
          (zeertzjq)

closes: vim/vim#13986

7ce34c9a94
This commit is contained in:
zeertzjq 2024-02-08 19:07:59 +08:00
parent 1f9da3d083
commit 1c2b9e8dd8
2 changed files with 19 additions and 20 deletions
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19
src/nvim/change.c
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@ -353,20 +353,19 @@ static void changed_common(buf_T *buf, linenr_T lnum, colnr_T col, linenr_T lnum
}
// If lines have been added or removed, relative numbering always
// requires a redraw.
// requires an update even if cursor didn't move.
if (wp->w_p_rnu && xtra != 0) {
wp->w_last_cursor_lnum_rnu = 0;
redraw_later(wp, UPD_VALID);
}
// Cursor line highlighting probably need to be updated with
// "UPD_VALID" if it's below the change.
// If the cursor line is inside the change we need to redraw more.
if (wp->w_p_cul) {
if (xtra == 0) {
redraw_later(wp, UPD_VALID);
} else if (lnum <= wp->w_last_cursorline) {
redraw_later(wp, UPD_SOME_VALID);
if (wp->w_p_cul && wp->w_last_cursorline >= lnum) {
if (wp->w_last_cursorline < lnume) {
// If 'cursorline' was inside the change, it has already
// been invalidated in w_lines[] by the loop above.
wp->w_last_cursorline = 0;
} else {
// If 'cursorline' was below the change, adjust its lnum.
wp->w_last_cursorline += xtra;
}
}
}

20
test/old/testdir/test_highlight.vim
View File

@ -541,7 +541,7 @@ func Test_cursorline_after_yank()
call writefile([
\ 'set cul rnu',
\ 'call setline(1, ["","1","2","3",""])',
\ ], 'Xtest_cursorline_yank')
\ ], 'Xtest_cursorline_yank', 'D')
let buf = RunVimInTerminal('-S Xtest_cursorline_yank', {'rows': 8})
call TermWait(buf)
call term_sendkeys(buf, "Gy3k")
@ -552,25 +552,25 @@ func Test_cursorline_after_yank()
" clean up
call StopVimInTerminal(buf)
call delete('Xtest_cursorline_yank')
endfunc
" test for issue https://github.com/vim/vim/issues/4862
" Test for issue #4862: pasting above 'cursorline' redraws properly.
func Test_put_before_cursorline()
new
only!
call setline(1, 'A')
call setline(1, ['A', 'B', 'C'])
call cursor(2, 1)
redraw
let std_attr = screenattr(1, 1)
let std_attr = screenattr(2, 1)
set cursorline
redraw
let cul_attr = screenattr(1, 1)
let cul_attr = screenattr(2, 1)
normal yyP
redraw
" Line 1 has cursor so it should be highlighted with CursorLine.
call assert_equal(cul_attr, screenattr(1, 1))
" And CursorLine highlighting from the second line should be gone.
call assert_equal(std_attr, screenattr(2, 1))
" Line 2 has cursor so it should be highlighted with CursorLine.
call assert_equal(cul_attr, screenattr(2, 1))
" And CursorLine highlighting from line 3 should be gone.
call assert_equal(std_attr, screenattr(3, 1))
set nocursorline
bwipe!
endfunc