From 5c4b503d3cb4a48d083bcf50d4932927e6eb749d Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Sun, 5 Feb 2023 09:37:12 +0800
Subject: vim-patch:9.0.1279: display shows lines scrolled down erroneously
 (#22126)

Problem:    Display shows lines scrolled down erroneously. (Yishai Lerner)
Solution:   Do not change "wl_lnum" at index zero. (closes vim/vim#11938)

https://github.com/vim/vim/commit/61fdbfa1e3c842252b701aec12f45839ca41ece5

Co-authored-by: Bram Moolenaar <Bram@vim.org>
---
 src/nvim/testdir/test_move.vim | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'src/nvim/testdir')

diff --git a/src/nvim/testdir/test_move.vim b/src/nvim/testdir/test_move.vim
index 8c40369dbd..40d75d887e 100644
--- a/src/nvim/testdir/test_move.vim
+++ b/src/nvim/testdir/test_move.vim
@@ -1,5 +1,8 @@
 " Test the ":move" command.
 
+source check.vim
+source screendump.vim
+
 func Test_move()
   enew!
   call append(0, ['line 1', 'line 2', 'line 3'])
@@ -43,4 +46,25 @@ func Test_move()
   %bwipeout!
 endfunc
 
+func Test_move_undo()
+  CheckRunVimInTerminal
+
+  let lines =<< trim END
+      call setline(1, ['First', 'Second', 'Third', 'Fourth'])
+  END
+  call writefile(lines, 'Xtest_move_undo.vim', 'D')
+  let buf = RunVimInTerminal('-S Xtest_move_undo.vim', #{rows: 10, cols: 60, statusoff: 2})
+
+  call term_sendkeys(buf, "gg:move +1\<CR>")
+  call VerifyScreenDump(buf, 'Test_move_undo_1', {})
+
+  " here the display would show the last few lines scrolled down
+  call term_sendkeys(buf, "u")
+  call term_sendkeys(buf, ":\<Esc>")
+  call VerifyScreenDump(buf, 'Test_move_undo_2', {})
+
+  call StopVimInTerminal(buf)
+endfunc
+
+
 " vim: shiftwidth=2 sts=2 expandtab
-- 
cgit