patch 9.1.0119: can move away from cmdwin using win_splitmove()

Problem:  can switch windows while textlocked via f_win_gotoid and
          f_win_splitmove (which also allows switching in the cmdwin).
Solution: Check text_or_buf_locked in f_win_splitmove()
          (Sean Dewar)

While at it, call text_or_buf_locked() in f_win_gotoid() instead of
testing for cmdwin_type() (which text_buf_locked() does and
in addition will also verify that the buffer is not locked).

closes: #14042

Signed-off-by: Sean Dewar <6256228+seandewar@users.noreply.github.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/testdir/test_window_cmd.vim b/src/testdir/test_window_cmd.vim
index 5b50f9d..ff4ab84 100644
--- a/src/testdir/test_window_cmd.vim
+++ b/src/testdir/test_window_cmd.vim
@@ -2225,4 +2225,32 @@
   %bw!
 endfunc
 
+func Test_win_gotoid_splitmove_textlock_cmdwin()
+  call setline(1, 'foo')
+  new
+  let curwin = win_getid()
+  call setline(1, 'bar')
+
+  set debug+=throw indentexpr=win_gotoid(win_getid(winnr('#')))
+  call assert_fails('normal! ==', 'E565:')
+  call assert_equal(curwin, win_getid())
+
+  set indentexpr=win_splitmove(winnr('#'),winnr())
+  call assert_fails('normal! ==', 'E565:')
+  call assert_equal(curwin, win_getid())
+
+  %bw!
+  set debug-=throw indentexpr&
+
+  call feedkeys('q:'
+           \ .. ":call assert_fails('call win_splitmove(winnr(''#''), winnr())', 'E11:')\<CR>"
+           \ .. ":call assert_equal('command', win_gettype())\<CR>"
+           \ .. ":call assert_equal('', win_gettype(winnr('#')))\<CR>", 'ntx')
+
+  call feedkeys('q:'
+           \ .. ":call assert_fails('call win_gotoid(win_getid(winnr(''#'')))', 'E11:')\<CR>"
+           \ .. ":call assert_equal('command', win_gettype())\<CR>"
+           \ .. ":call assert_equal('', win_gettype(winnr('#')))\<CR>", 'ntx')
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab