patch 9.0.0555: scrolling with 'nosplitscroll' in callback changing curwinv9.0.0555

Problem:    Scrolling with 'nosplitscroll' in callback changing curwin.
Solution:   Invalidate w_cline_row in the right place. (Luuk van Baal,
            closes #11185)

7 files changed, 68 insertions, 1 deletions

diff --git a/src/testdir/dumps/Test_nosplitscroll_callback_1.dump b/src/testdir/dumps/Test_nosplitscroll_callback_1.dump
new file mode 100644
index 000000000..4f3a85103
--- /dev/null
+++ b/src/testdir/dumps/Test_nosplitscroll_callback_1.dump
@@ -0,0 +1,8 @@
+|0+0&#ffffff0| @73
+|1| @73
+|2| @73
+|[+1&&|N|o| |N|a|m|e|]| |[|+|]| @43|1|,|1| @11|T|o|p
+>4+0&&| @73
+|5| @73
+|[+3&&|N|o| |N|a|m|e|]| |[|+|]| @43|5|,|1| @11|6@1|%
+| +0&&@74
diff --git a/src/testdir/dumps/Test_nosplitscroll_callback_2.dump b/src/testdir/dumps/Test_nosplitscroll_callback_2.dump
new file mode 100644
index 000000000..1537db5c7
--- /dev/null
+++ b/src/testdir/dumps/Test_nosplitscroll_callback_2.dump
@@ -0,0 +1,8 @@
+>0+0&#ffffff0| @73
+|1| @73
+|2| @73
+|[+3&&|N|o| |N|a|m|e|]| |[|+|]| @43|1|,|1| @11|T|o|p
+|4+0&&| @73
+|5| @73
+|[+1&&|N|o| |N|a|m|e|]| |[|+|]| @43|1|,|1| @11|6@1|%
+| +0&&@74
diff --git a/src/testdir/dumps/Test_nosplitscroll_callback_3.dump b/src/testdir/dumps/Test_nosplitscroll_callback_3.dump
new file mode 100644
index 000000000..7f265b9d2
--- /dev/null
+++ b/src/testdir/dumps/Test_nosplitscroll_callback_3.dump
@@ -0,0 +1,8 @@
+>1+0&#ffffff0| @73
+|2| @73
+|[+3&&|N|o| |N|a|m|e|]| |[|+|]| @43|2|,|1| @11|1|6|%
+|4+0&&| @73
+|5| @73
+|6| @73
+|[+1&&|N|o| |N|a|m|e|]| |[|+|]| @43|6|,|1| @11|8|0|%
+| +0&&@74
diff --git a/src/testdir/dumps/Test_nosplitscroll_callback_4.dump b/src/testdir/dumps/Test_nosplitscroll_callback_4.dump
new file mode 100644
index 000000000..25da180ae
--- /dev/null
+++ b/src/testdir/dumps/Test_nosplitscroll_callback_4.dump
@@ -0,0 +1,8 @@
+|1+0&#ffffff0| @73
+|2| @73
+|[+1&&|N|o| |N|a|m|e|]| |[|+|]| @43|8|,|1| @11|1|6|%
+|4+0&&| @73
+>5| @73
+|6| @73
+|[+3&&|N|o| |N|a|m|e|]| |[|+|]| @43|6|,|1| @11|8|0|%
+| +0&&@74
diff --git a/src/testdir/test_window_cmd.vim b/src/testdir/test_window_cmd.vim
index 21e9906db..2ee441787 100644
--- a/src/testdir/test_window_cmd.vim
+++ b/src/testdir/test_window_cmd.vim
@@ -1,6 +1,7 @@
 " Tests for window cmd (:wincmd, :split, :vsplit, :resize and etc...)
 
 source check.vim
+source screendump.vim
 
 func Test_window_cmd_ls0_with_split()
   set ls=0
@@ -1817,4 +1818,34 @@ function Test_nosplitscroll_misc()
   set splitscroll&
 endfunc
 
+function Test_nosplitscroll_callback()
+  CheckScreendump
+  let lines =<< trim END
+    set nosplitscroll
+    call setline(1, range(&lines))
+    function WincmdCb(a, b)
+      split | wincmd p
+    endfunction
+    function TermCb(a, b)
+      close | split
+    endfunction
+    nnoremap t <cmd>call popup_create(term_start(&shell, { 'hidden': 1, 'exit_cb': 'TermCb' }), {})<CR>
+    nnoremap j <cmd>call job_start([&shell, &shellcmdflag, "echo"], { 'exit_cb': 'WincmdCb' })<CR>
+  END
+  call writefile(lines, 'XTestNosplitscrollCallback', 'D')
+  let buf = RunVimInTerminal('-S XTestNosplitscrollCallback', #{rows: 8})
+
+  call term_sendkeys(buf, "j")
+  call VerifyScreenDump(buf, 'Test_nosplitscroll_callback_1', {})
+
+  call term_sendkeys(buf, ":quit\<CR>Htexit\<CR>")
+  call VerifyScreenDump(buf, 'Test_nosplitscroll_callback_2', {})
+
+  call term_sendkeys(buf, ":set sb\<CR>:quit\<CR>Gj")
+  call VerifyScreenDump(buf, 'Test_nosplitscroll_callback_3', {})
+
+  call term_sendkeys(buf, ":quit\<CR>Gtexit\<CR>")
+  call VerifyScreenDump(buf, 'Test_nosplitscroll_callback_4', {})
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/version.c b/src/version.c
index 23f822c17..617b76c2f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -700,6 +700,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    555,
+/**/
     554,
 /**/
     553,
diff --git a/src/window.c b/src/window.c
index d73dfd9fd..755848e43 100644
--- a/src/window.c
+++ b/src/window.c
@@ -6360,7 +6360,7 @@ win_fix_scroll(int resize)
     win_T    *wp;
     linenr_T lnum;
 
-    skip_update_topline = TRUE;  // avoid scrolling in curs_rows()
+    skip_update_topline = TRUE;  // avoid scrolling in curs_columns()
     FOR_ALL_WINDOWS(wp)
     {
 	// Skip when window height has not changed.
@@ -6378,6 +6378,8 @@ win_fix_scroll(int resize)
 		scroll_to_fraction(wp, wp->w_prev_height);
 		wp->w_cursor.lnum = lnum;
 	    }
+	    else if (wp == curwin)
+		wp->w_valid &= ~VALID_CROW;
 	    invalidate_botline_win(wp);
 	    validate_botline_win(wp);
 	}