patch 8.0.1190: unusable after opening new window in BufWritePre event

Problem:    Vim becomes unusable after opening new window in BufWritePre
            event.
Solution:   Call not_exiting(). (Martin Tournoij, closes #2205)
            Also for "2q" when a help window is open.  Add a test.
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index bb1ae46..7365d1b 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -7261,6 +7261,7 @@
 	 */
 	if (only_one_window() && (ONE_WINDOW || eap->addr_count == 0))
 	    getout(0);
+	not_exiting();
 #ifdef FEAT_GUI
 	need_mouse_correct = TRUE;
 #endif
@@ -7799,6 +7800,7 @@
     {
 	if (only_one_window())	    /* quit last window, exit Vim */
 	    getout(0);
+	not_exiting();
 # ifdef FEAT_GUI
 	need_mouse_correct = TRUE;
 # endif
diff --git a/src/testdir/test_writefile.vim b/src/testdir/test_writefile.vim
index 6768e31..f462d04 100644
--- a/src/testdir/test_writefile.vim
+++ b/src/testdir/test_writefile.vim
@@ -49,3 +49,47 @@
   bwipe!
   set backup& writebackup&
 endfunc
+
+func SetFlag(timer)
+  let g:flag = 1
+endfunc
+
+func Test_write_quit_split()
+  " Prevent exiting by splitting window on file write.
+  augroup testgroup
+    autocmd BufWritePre * split
+  augroup END
+  e! Xfile
+  call setline(1, 'nothing')
+  wq
+
+  if has('timers')
+    " timer will not run if "exiting" is still set
+    let g:flag = 0
+    call timer_start(1, 'SetFlag')
+    sleep 50m
+    call assert_equal(1, g:flag)
+    unlet g:flag
+  endif
+  au! testgroup
+  bwipe Xfile
+  call delete('Xfile')
+endfunc
+
+func Test_nowrite_quit_split()
+  " Prevent exiting by opening a help window.
+  e! Xfile
+  help
+  wincmd w
+  exe winnr() . 'q'
+
+  if has('timers')
+    " timer will not run if "exiting" is still set
+    let g:flag = 0
+    call timer_start(1, 'SetFlag')
+    sleep 50m
+    call assert_equal(1, g:flag)
+    unlet g:flag
+  endif
+  bwipe Xfile
+endfunc
diff --git a/src/version.c b/src/version.c
index 451eb36..efdc5ab 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1190,
+/**/
     1189,
 /**/
     1188,