GNU-Emacs-25.2-OS-X-no-title-bar.patch

---
 lisp/cus-start.el |  1 +
 src/nsterm.m      | 19 +++++++++++++++++--
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/lisp/cus-start.el b/lisp/cus-start.el
index 51a92324f2..e9fb28cb17 100644
--- a/lisp/cus-start.el
+++ b/lisp/cus-start.el
@@ -446,6 +446,7 @@ minibuffer-prompt-properties--setter
 	     (ns-use-native-fullscreen ns boolean "24.4")
              (ns-use-fullscreen-animation ns boolean "25.1")
              (ns-use-srgb-colorspace ns boolean "24.4")
+             (ns-use-title-bar ns boolean "26.1")
 	     ;; process.c
 	     (delete-exited-processes processes-basics boolean)
 	     ;; syntax.c
diff --git a/src/nsterm.m b/src/nsterm.m
index fe9b418e4d..a84b9649ff 100644
--- a/src/nsterm.m
+++ b/src/nsterm.m
@@ -6831,11 +6831,13 @@ not_in_argv (NSString *arg)
   maximizing_resize = NO;
 #endif
 
-  win = [[EmacsWindow alloc]
+  win = [[EmacsFSWindow alloc]
             initWithContentRect: r
                       styleMask: (NSResizableWindowMask |
 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_7
-                                  NSTitledWindowMask |
+                                  (ns_use_title_bar ?
+                                   NSTitledWindowMask :
+                                   NSWindowStyleMaskBorderless) |
 #endif
                                   NSMiniaturizableWindowMask |
                                   NSClosableWindowMask)
@@ -6868,6 +6870,7 @@ not_in_argv (NSString *arg)
   [win setTitle: name];
 
   /* toolbar support */
+  if ( ns_use_title_bar ) {
   toolbar = [[EmacsToolbar alloc] initForView: self withIdentifier:
                          [NSString stringWithFormat: @"Emacs Frame %d",
                                    ns_window_num]];
@@ -6889,6 +6892,7 @@ not_in_argv (NSString *arg)
   }
 #endif
   FRAME_TOOLBAR_HEIGHT (f) = 0;
+  }
 
   tem = f->icon_name;
   if (!NILP (tem))
@@ -8757,6 +8761,17 @@ Note that this does not apply to images.
 This variable is ignored on Mac OS X < 10.7 and GNUstep.  */);
   ns_use_srgb_colorspace = YES;
 
+  DEFVAR_BOOL ("ns-use-title-bar", ns_use_title_bar,
+    doc: /*Non-nil to include the title bar on frames.
+    Nil to omit the title bar on OSX >= 10.7. This variable is
+    ignored on OSX < 10.7. Note that the first frame per session
+    (unless it is an emacsclient frame connecting to emacs
+    --daemon) will ignore (!) the user-set value of this variable,
+    using the default value of this variable (nil--do not include a
+    title bar). This is almost certainly due to a bug in the patch
+    adding this variable. Default is nil.  */);
+  ns_use_title_bar = NO;
+
   /* TODO: move to common code */
   DEFVAR_LISP ("x-toolkit-scroll-bars", Vx_toolkit_scroll_bars,
 	       doc: /* Which toolkit scroll bars Emacs uses, if any.
-- 
2.12.2