vim-patch:8.1.1189: mode is not cleared when leaving Insert mode

Problem:    Mode is not cleared when leaving Insert mode.
Solution:   Clear the mode when got_int is set. (Ozaki Kiichi, closes vim/vim#4270)
https://github.com/vim/vim/commit/abc7c7fc5a098374f5543a237e6c9dd918848b34

3 files changed, 33 insertions, 2 deletions

diff --git a/src/nvim/edit.c b/src/nvim/edit.c
index ea64f2d544..e1473f30c8 100644
--- a/src/nvim/edit.c
+++ b/src/nvim/edit.c
@@ -4251,7 +4251,7 @@ static bool ins_esc(long *count, int cmdchar, bool nomove)
   // Otherwise remove the mode message.
   if (reg_recording != 0 || restart_edit != NUL) {
     showmode();
-  } else if (p_smd && !skip_showmode()) {
+  } else if (p_smd && (got_int || !skip_showmode())) {
     msg("");
   }
   // Exit Insert mode
diff --git a/src/nvim/testdir/test_bufline.vim b/src/nvim/testdir/test_bufline.vim
index ffb8e3facd..579d3a5eb5 100644
--- a/src/nvim/testdir/test_bufline.vim
+++ b/src/nvim/testdir/test_bufline.vim
@@ -19,7 +19,7 @@ func Test_setbufline_getbufline()
   let b = bufnr('%')
   wincmd w
   call assert_equal(1, setbufline(b, 5, ['x']))
-  call assert_equal(1, setbufline(1234, 1, ['x']))
+  call assert_equal(1, setbufline(bufnr('$') + 1, 1, ['x']))
   call assert_equal(0, setbufline(b, 4, ['d', 'e']))
   call assert_equal(['c'], b->getbufline(3))
   call assert_equal(['d'], getbufline(b, 4))
diff --git a/src/nvim/testdir/test_messages.vim b/src/nvim/testdir/test_messages.vim
index a02d23b409..19d7d23cca 100644
--- a/src/nvim/testdir/test_messages.vim
+++ b/src/nvim/testdir/test_messages.vim
@@ -95,6 +95,37 @@ func Test_echoerr()
   call test_ignore_error('RESET')
 endfunc
 
+func Test_mode_message_at_leaving_insert_by_ctrl_c()
+  if !has('terminal') || has('gui_running')
+    return
+  endif
+
+  " Set custom statusline built by user-defined function.
+  let testfile = 'Xtest.vim'
+  call writefile([
+        \ 'func StatusLine() abort',
+        \ '  return ""',
+        \ 'endfunc',
+        \ 'set statusline=%!StatusLine()',
+        \ 'set laststatus=2',
+        \ ], testfile)
+
+  let rows = 10
+  let buf = term_start([GetVimProg(), '--clean', '-S', testfile], {'term_rows': rows})
+  call term_wait(buf, 200)
+  call assert_equal('run', job_status(term_getjob(buf)))
+
+  call term_sendkeys(buf, "i")
+  call WaitForAssert({-> assert_match('^-- INSERT --\s*$', term_getline(buf, rows))})
+  call term_sendkeys(buf, "\<C-C>")
+  call WaitForAssert({-> assert_match('^\s*$', term_getline(buf, rows))})
+
+  call term_sendkeys(buf, ":qall!\<CR>")
+  call WaitForAssert({-> assert_equal('dead', job_status(term_getjob(buf)))})
+  exe buf . 'bwipe!'
+  call delete(testfile)
+endfunc
+
 func Test_echospace()
   set noruler noshowcmd laststatus=1
   call assert_equal(&columns - 1, v:echospace)