Merge from origin/emacs-26

b98cf9c ; Fix a typo in the Emacs manual
700fcd7 * doc/emacs/help.texi: Fix paren typo.
c9c0e40 More minor changes in shell-related nodes of Emacs manual
e6bf19c Fix inaccuracies in "Shell Ring" node of Emacs manual
087681b8 Improve documentation of kmacro commands and variables.
be2e8cb * doc/man/emacs.1.in: Document --fg-daemon and --bg-daemon.
1d9e66a Don't check non-X frames for z order (Bug#31373)
7dc028e Check NSWindow is actually a frame

Conflicts:
	src/nsfns.m

1 files changed, 3 insertions, 3 deletions

diff --git a/src/nsfns.m b/src/nsfns.m
index 7cf45a54f90..9ff7e88a8d4 100644
--- a/src/nsfns.m
+++ b/src/nsfns.m
@@ -1451,9 +1451,9 @@ Frames are listed from topmost (first) to bottommost (last).  */)
     {
       Lisp_Object frame;
 
-      /* Check against [win parentWindow] so that it doesn't match
-         itself.  */
-      if (parent == nil || ns_window_is_ancestor (parent, [win parentWindow]))
+      /* Check against [win parentWindow] so that it doesn't match itself. */
+      if ([[win delegate] isKindOfClass:[EmacsView class]]
+          && (parent == nil || ns_window_is_ancestor (parent, [win parentWindow])))
         {
           XSETFRAME (frame, ((EmacsView *)[win delegate])->emacsframe);
           frames = Fcons(frame, frames);