Commit: patch 9.1.1482: scrolling with 'splitkeep' and line()

[Christian Brabandt]

patch 9.1.1482: scrolling with 'splitkeep' and line()

Commit: https://github.com/vim/vim/commit/fe803c8c04c1b73453c0dab970863ab53e3eeec7
Author: Luuk van Baal <luuk...@gmail.com>
Date: Thu Jun 26 20:34:15 2025 +0200

patch 9.1.1482: scrolling with 'splitkeep' and line()

Problem: Topline is preemptively updated by line() in WinResized
autocmd with 'splitkeep' != "cursor".
Solution: Set `skip_update_topline` when 'splitkeep' != "cursor".
(Luuk van Baal)

related: neovim/neovim#34666
closes: #17613

Signed-off-by: Luuk van Baal <luuk...@gmail.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/evalfunc.c b/src/evalfunc.c
index 76955a7ed..2e864f74f 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -8833,19 +8833,18 @@ f_line(typval_T *argvars, typval_T *rettv)
{
if (switch_win_noblock(&switchwin, wp, tp, TRUE) == OK)
{
+ // With 'splitkeep' != cursor and in diff mode, prevent that the
+ // window scrolls and keep the topline.
+ if (*p_spk != 'c'
#ifdef FEAT_DIFF
- // in diff mode, prevent that the window scrolls
- // and keep the topline
- if (curwin->w_p_diff && switchwin.sw_curwin->w_p_diff)
- skip_update_topline = TRUE;
+ || (curwin->w_p_diff && switchwin.sw_curwin->w_p_diff)
#endif
+ )
+ skip_update_topline = TRUE;
check_cursor();
fp = var2fpos(&argvars[0], TRUE, &fnum, FALSE);
}
-#ifdef FEAT_DIFF
- if (curwin->w_p_diff && switchwin.sw_curwin->w_p_diff)
- skip_update_topline = FALSE;
-#endif
+ skip_update_topline = FALSE;
restore_win_noblock(&switchwin, TRUE);
}
}
diff --git a/src/testdir/dumps/Test_splitkeep_line_1.dump b/src/testdir/dumps/Test_splitkeep_line_1.dump
new file mode 100644
index 000000000..7a387baec
--- /dev/null
+++ b/src/testdir/dumps/Test_splitkeep_line_1.dump
@@ -0,0 +1,6 @@
+>0+0&#ffffff0| @38
+|1| @38
+|2| @38
+|3| @38
+|4| @38
+@22|1|,|1| @10|T|o|p|
diff --git a/src/testdir/dumps/Test_splitkeep_line_2.dump b/src/testdir/dumps/Test_splitkeep_line_2.dump
new file mode 100644
index 000000000..c322f1d31
--- /dev/null
+++ b/src/testdir/dumps/Test_splitkeep_line_2.dump
@@ -0,0 +1,6 @@
+>0+0&#ffffff0| @38
+|1| @38
+|[+3&&|N|o| |N|a|m|e|]| |[|+|]| @8|1|,|1| @11|T|o|p
+|3+0&&| @38
+|[+1&&|N|o| |N|a|m|e|]| |[|+|]| @8|1|,|1| @12|0|%
+|:+0&&|w|i|n|c|m|d| |s| @30
diff --git a/src/testdir/test_window_cmd.vim b/src/testdir/test_window_cmd.vim
index c5edb0d4a..4e02f0098 100644
--- a/src/testdir/test_window_cmd.vim
+++ b/src/testdir/test_window_cmd.vim
@@ -2120,6 +2120,24 @@ func Test_splitkeep_skipcol()
call VerifyScreenDump(buf, 'Test_splitkeep_skipcol_1', {})
endfunc

+func Test_splitkeep_line()
+ CheckScreendump
+
+ let lines =<< trim END
+ set splitkeep=screen nosplitbelow
+ autocmd WinResized * call line('w0', 1000)
+ call setline(1, range(1000))
+ END
+
+ call writefile(lines, 'XTestSplitkeepSkipcol', 'D')
+ let buf = RunVimInTerminal('-S XTestSplitkeepSkipcol', #{rows: 6, cols: 40})
+
+ call VerifyScreenDump(buf, 'Test_splitkeep_line_1', {})
+
+ call term_sendkeys(buf, ":wincmd s\<CR>")
+ call VerifyScreenDump(buf, 'Test_splitkeep_line_2', {})
+endfunc
+
func Test_new_help_window_on_error()
help change.txt
execute "normal! /CTRL-@\<CR>"
diff --git a/src/version.c b/src/version.c
index c7c66ec0b..67346ec22 100644
--- a/src/version.c
+++ b/src/version.c
@@ -709,6 +709,8 @@ static char *(features[]) =

static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 1482,
/**/
1481,
/**/