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-rw-r--r--src/nvim/change.c4
-rw-r--r--src/nvim/testdir/test_move.vim24
2 files changed, 27 insertions, 1 deletions
diff --git a/src/nvim/change.c b/src/nvim/change.c
index 06696610b0..1bd7ea3a5a 100644
--- a/src/nvim/change.c
+++ b/src/nvim/change.c
@@ -296,7 +296,9 @@ static void changed_common(linenr_T lnum, colnr_T col, linenr_T lnume, linenr_T
for (int i = 0; i < wp->w_lines_valid; i++) {
if (wp->w_lines[i].wl_valid) {
if (wp->w_lines[i].wl_lnum >= lnum) {
- if (wp->w_lines[i].wl_lnum < lnume) {
+ // Do not change wl_lnum at index zero, it is used to
+ // compare with w_topline. Invalidate it instead.
+ if (wp->w_lines[i].wl_lnum < lnume || i == 0) {
// line included in change
wp->w_lines[i].wl_valid = false;
} else if (xtra != 0) {
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