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-rw-r--r--src/drawscreen.c2
-rw-r--r--src/testdir/dumps/Test_display_scroll_at_topline.dump4
-rw-r--r--src/testdir/test_display.vim12
-rw-r--r--src/version.c2
4 files changed, 19 insertions, 1 deletions
diff --git a/src/drawscreen.c b/src/drawscreen.c
index 7afcf0975..0cddff39a 100644
--- a/src/drawscreen.c
+++ b/src/drawscreen.c
@@ -1662,7 +1662,7 @@ win_update(win_T *wp)
if (mod_top != 0
&& wp->w_topline == mod_top
&& (!wp->w_lines[0].wl_valid
- || wp->w_topline == wp->w_lines[0].wl_lnum))
+ || wp->w_topline <= wp->w_lines[0].wl_lnum))
{
// w_topline is the first changed line and window is not scrolled,
// the scrolling from changed lines will be done further down.
diff --git a/src/testdir/dumps/Test_display_scroll_at_topline.dump b/src/testdir/dumps/Test_display_scroll_at_topline.dump
new file mode 100644
index 000000000..9c843c0a4
--- /dev/null
+++ b/src/testdir/dumps/Test_display_scroll_at_topline.dump
@@ -0,0 +1,4 @@
+> +0&#ffffff0@19
+|a@19
+@1| @18
+|~+0#4040ff13&| @18
diff --git a/src/testdir/test_display.vim b/src/testdir/test_display.vim
index 97b0a9e88..49d0d8c04 100644
--- a/src/testdir/test_display.vim
+++ b/src/testdir/test_display.vim
@@ -245,4 +245,16 @@ func Test_visual_block_scroll()
call delete(filename)
endfunc
+func Test_display_scroll_at_topline()
+ CheckScreendump
+
+ let buf = RunVimInTerminal('', #{cols: 20})
+ call term_sendkeys(buf, ":call setline(1, repeat('a', 21))\<CR>")
+ call term_wait(buf)
+ call term_sendkeys(buf, "O\<Esc>")
+ call VerifyScreenDump(buf, 'Test_display_scroll_at_topline', #{rows: 4})
+
+ call StopVimInTerminal(buf)
+endfunc
+
" vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/version.c b/src/version.c
index 51b87ce25..d6d197303 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 1488,
+/**/
1487,
/**/
1486,