emacs-26.1-rc1-mac-6.90-no-title-bar.patch

diff -ruN mituharu-emacs-mac-9ea45639e1ab/lisp/cus-start.el mituharu-emacs-mac-9ea45639e1ab-mod/lisp/cus-start.el
--- mituharu-emacs-mac-9ea45639e1ab/lisp/cus-start.el	2018-04-15 02:15:54.000000000 -0400
+++ mituharu-emacs-mac-9ea45639e1ab-mod/lisp/cus-start.el	2018-05-02 19:32:22.000000000 -0400
@@ -580,6 +580,7 @@
 	     (mac-pass-command-to-system mac boolean "22.1")
 	     (mac-pass-control-to-system mac boolean "22.1")
 	     (mac-drawing-use-gcd mac boolean "24.4")
+             (mac-use-title-bar mac boolean "25.2")
 	     (mac-frame-tabbing mac (choice (const automatic) (const inverted)
                                             (const nil) (const t)) "24.5")
 	     (mac-ignore-accessibility mac boolean "25.3")
diff -ruN mituharu-emacs-mac-9ea45639e1ab/src/macappkit.m mituharu-emacs-mac-9ea45639e1ab-mod/src/macappkit.m
--- mituharu-emacs-mac-9ea45639e1ab/src/macappkit.m	2018-04-15 02:15:54.000000000 -0400
+++ mituharu-emacs-mac-9ea45639e1ab-mod/src/macappkit.m	2018-05-02 19:34:56.000000000 -0400
@@ -2446,11 +2446,15 @@
   if (!FRAME_TOOLTIP_P (f))
     {
       if (!self.shouldBeTitled)
-	windowStyle = NSWindowStyleMaskBorderless;
+        windowStyle = NSWindowStyleMaskBorderless;
       else
-	windowStyle = (NSWindowStyleMaskTitled | NSWindowStyleMaskClosable
-		       | NSWindowStyleMaskMiniaturizable
-		       | NSWindowStyleMaskResizable);
+        if (mac_use_title_bar)
+          windowStyle = (NSWindowStyleMaskTitled | NSWindowStyleMaskClosable
+                         | NSWindowStyleMaskMiniaturizable
+                         | NSWindowStyleMaskResizable);
+        else
+          windowStyle = (NSWindowStyleMaskBorderless | NSWindowStyleMaskResizable
+                         | NSWindowStyleMaskMiniaturizable);
       deferCreation = YES;
     }
   else
diff -ruN mituharu-emacs-mac-9ea45639e1ab/src/macterm.c mituharu-emacs-mac-9ea45639e1ab-mod/src/macterm.c
--- mituharu-emacs-mac-9ea45639e1ab/src/macterm.c	2018-04-15 02:15:54.000000000 -0400
+++ mituharu-emacs-mac-9ea45639e1ab-mod/src/macterm.c	2018-05-02 19:42:57.000000000 -0400
@@ -6262,6 +6262,16 @@
 This variable has no effect on OS X 10.11 and earlier.  */);
   Vmac_frame_tabbing = Qautomatic;
 
+  DEFVAR_BOOL ("mac-use-title-bar", mac_use_title_bar,
+     doc: /*Non-nil means to include the title bar on frames.  Nil means to
+omit the title bar on OSX >= 10.7.  This variable is ignored on OSX <
+10.7. Note that the first frame per emacs session (unless it is an
+emacsclient) will use the default value of this variable (nil--do not
+include a title bar), ignoring (!) the user-set value of this
+variable. This is almost certainly due to a bug in the patch adding
+this variable. Default is nil.*/);
+  mac_use_title_bar = false;
+
   DEFVAR_BOOL ("mac-ignore-accessibility", mac_ignore_accessibility,
     doc: /* Non-nil means to ignore the system accessibility feature.
 Emacspeak users may want to set this variable so it may not interfere