Commit: patch 9.1.1964: Wrong display when using setline() at hit-enter prompt

[Christian Brabandt]

patch 9.1.1964: Wrong display when using setline() at hit-enter prompt

Commit: https://github.com/vim/vim/commit/e72eacceab2647e37e7d7a8a70e89dcd6ad01288
Author: zeertzjq <zeer...@outlook.com>
Date: Tue Dec 9 13:10:12 2025 +0100

patch 9.1.1964: Wrong display when using setline() at hit-enter prompt

Problem: Wrong display when using setline() at hit-enter prompt
(after 8.2.3204).
Solution: Only skip scrolling for changed lines in top area if it's
scrolled down due to w_topline change. Also add more testing
for what 8.2.3204 fixed (zeertzjq).

closes: #18887

Signed-off-by: zeertzjq <zeer...@outlook.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/drawscreen.c b/src/drawscreen.c
index c6baf0ca8..5c7ecfed9 100644
--- a/src/drawscreen.c
+++ b/src/drawscreen.c
@@ -2282,11 +2282,11 @@ win_update(win_T *wp)
// When at start of changed lines: May scroll following lines
// up or down to minimize redrawing.
// Don't do this when the change continues until the end.
- // Don't scroll the top area which was already scrolled above,
- // but do scroll for changed lines below the top area.
+ // Don't scroll for changed lines in the top area if that's already
+ // done above, but do scroll for changed lines below the top area.
if (!scrolled_for_mod && mod_bot != MAXLNUM
&& lnum >= mod_top && lnum < MAX(mod_bot, mod_top + 1)
- && row >= top_end)
+ && (!scrolled_down || row >= top_end))
{
scrolled_for_mod = TRUE;

diff --git a/src/testdir/dumps/Test_display_hit_enter_setline_1.dump b/src/testdir/dumps/Test_display_hit_enter_setline_1.dump
new file mode 100644
index 000000000..e51dd0ec2
--- /dev/null
+++ b/src/testdir/dumps/Test_display_hit_enter_setline_1.dump
@@ -0,0 +1,8 @@
+>1+0&#ffffff0| @38
+|2| @38
+|3| @38
+|4| @38
+|5| @38
+|6| @38
+|7| @38
+@22|1|,|1| @10|T|o|p|
diff --git a/src/testdir/dumps/Test_display_hit_enter_setline_2.dump b/src/testdir/dumps/Test_display_hit_enter_setline_2.dump
new file mode 100644
index 000000000..982659481
--- /dev/null
+++ b/src/testdir/dumps/Test_display_hit_enter_setline_2.dump
@@ -0,0 +1,8 @@
+|4+0&#ffffff0| @38
+|5| @38
+|6| @38
+|7| @38
+|a|b|c| @36
+|d|e|f| @36
+|g|h|i| @36
+|P+0#00e0003&|r|e|s@1| |E|N|T|E|R| |o|r| |t|y|p|e| |c|o|m@1|a|n|d| |t|o| |c|o|n|t|i|n|u|e> +0#0000000&
diff --git a/src/testdir/dumps/Test_display_hit_enter_setline_3.dump b/src/testdir/dumps/Test_display_hit_enter_setline_3.dump
new file mode 100644
index 000000000..15ea35788
--- /dev/null
+++ b/src/testdir/dumps/Test_display_hit_enter_setline_3.dump
@@ -0,0 +1,8 @@
+>1+0&#ffffff0| @38
+|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f
+|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o
+@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1| @14
+|3| @38
+|4| @38
+|5| @38
+@22|1|,|1| @10|T|o|p|
diff --git a/src/testdir/dumps/Test_display_scroll_setline_6.dump b/src/testdir/dumps/Test_display_scroll_setline_6.dump
new file mode 100644
index 000000000..65e0187dc
--- /dev/null
+++ b/src/testdir/dumps/Test_display_scroll_setline_6.dump
@@ -0,0 +1,15 @@
+| +0#0000e05#a8a8a8255@1|b+0#0000000#ffffff0|a|r|b|a|r|b|a|r|b|a|r|b|a|r|b|a|r
+| +0#0000e05#a8a8a8255@1|b+0#0000000#ffffff0|a|r|b|a|r|b|a|r|b|a|r| @5
+|>| |7|3| @15
+| +0#0000e05#a8a8a8255@1|7+0#0000000#ffffff0|4| @15
+|>| |7|5| @15
+| +0#0000e05#a8a8a8255@1|7+0#0000000#ffffff0|6| @15
+| +0#0000e05#a8a8a8255@1>7+0#0000000#ffffff0@1| @15
+| +0#0000e05#a8a8a8255@1|7+0#0000000#ffffff0|8| @15
+| +0#0000e05#a8a8a8255@1|7+0#0000000#ffffff0|9| @15
+| +0#0000e05#a8a8a8255@1|f+0#0000000#ffffff0|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1
+| +0#0000e05#a8a8a8255@1|f+0#0000000#ffffff0|o@1|f|o@1|f|o@1|f|o@1|f|o@1|f|o@1
+| +0#0000e05#a8a8a8255@1|f+0#0000000#ffffff0|o@1|f|o@1|f|o@1| @8
+| +0#0000e05#a8a8a8255@1|8+0#0000000#ffffff0|1| @15
+| +0#0000e05#a8a8a8255@1|8+0#0000000#ffffff0|2| @15
+@10|7@1|,|1| @1|7|9|%|
diff --git a/src/testdir/test_display.vim b/src/testdir/test_display.vim
index 3eca1765c..7717b866b 100644
--- a/src/testdir/test_display.vim
+++ b/src/testdir/test_display.vim
@@ -272,13 +272,19 @@ func Test_display_scroll_setline()
setlocal scrolloff=5 signcolumn=yes
call setline(1, range(1, 100))
call sign_define('foo', #{text: '>'})
- call sign_place(1, 'bar', 'foo', bufnr(), #{lnum: 73})
- call sign_place(2, 'bar', 'foo', bufnr(), #{lnum: 74})
- call sign_place(3, 'bar', 'foo', bufnr(), #{lnum: 75})
+ call sign_place(1, 'bar', 'foo', bufnr(), #{lnum: 71})
+ call sign_place(2, 'bar', 'foo', bufnr(), #{lnum: 72})
+ call sign_place(3, 'bar', 'foo', bufnr(), #{lnum: 73})
+ call sign_place(4, 'bar', 'foo', bufnr(), #{lnum: 74})
+ call sign_place(5, 'bar', 'foo', bufnr(), #{lnum: 75})
normal! G
autocmd CursorMoved * if line('.') == 79
- \ | call sign_unplace('bar', #{id: 2})
+ \ | call sign_unplace('bar', #{id: 4})
\ | call setline(80, repeat('foo', 15))
+ \ | elseif line('.') == 78
+ \ | call setline(72, repeat('bar', 10))
+ \ | elseif line('.') == 77
+ \ | call sign_unplace('bar', #{id: 2})
\ | endif
END
call writefile(lines, 'XscrollSetline.vim', 'D')
@@ -293,6 +299,27 @@ func Test_display_scroll_setline()
call VerifyScreenDump(buf, 'Test_display_scroll_setline_4', {})
call term_sendkeys(buf, 'k')
call VerifyScreenDump(buf, 'Test_display_scroll_setline_5', {})
+ call term_sendkeys(buf, 'k')
+ call VerifyScreenDump(buf, 'Test_display_scroll_setline_6', {})
+
+ call StopVimInTerminal(buf)
+endfunc
+
+func Test_display_hit_enter_setline()
+ CheckScreendump
+
+ let lines =<< trim END
+ call setline(1, range(1, 100))
+ END
+ call writefile(lines, 'XhitEnterSetline.vim', 'D')
+
+ let buf = RunVimInTerminal('-S XhitEnterSetline.vim', #{rows: 8, cols: 40})
+ call VerifyScreenDump(buf, 'Test_display_hit_enter_setline_1', {})
+ call term_sendkeys(buf, ':echo "abc
def
ghi"')
+ call term_sendkeys(buf, "\<CR>")
+ call VerifyScreenDump(buf, 'Test_display_hit_enter_setline_2', {})
+ call term_sendkeys(buf, ":call setline(2, repeat('foo', 35))\<CR>")
+ call VerifyScreenDump(buf, 'Test_display_hit_enter_setline_3', {})

call StopVimInTerminal(buf)
endfunc
diff --git a/src/version.c b/src/version.c
index 6e48a748d..fef7febbb 100644
--- a/src/version.c
+++ b/src/version.c
@@ -729,6 +729,8 @@ static char *(features[]) =

static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 1964,
/**/
1963,
/**/