Add full screen window title to "Window" menu

src/MacVim/MMFullscreenWindow.m

@@ -148,9 +148,14 @@
     
     // NOTE: Calling setTitle:nil causes an exception to be raised (and it is
     // possible that 'target' has no title when we get here).
-    if ([target title])
+    if ([target title]) {
         [self setTitle:[target title]];
 
+        // NOTE: Cocoa does not add borderless windows to the "Window" menu so
+        // we have to do it manually.
+        [NSApp changeWindowsItem:self title:[target title] filename:NO];
+    }
+
     [self setOpaque:[target isOpaque]];
 
     // don't set this sooner, so we don't get an additional

src/MacVim/MMWindowController.m

@@ -360,8 +360,17 @@
 
 - (void)setTitle:(NSString *)title
 {
-    if (title)
-        [decoratedWindow setTitle:title];
+    if (!title)
+        return;
+
+    [decoratedWindow setTitle:title];
+    if (fullscreenEnabled) {
+        [fullscreenWindow setTitle:title];
+
+        // NOTE: Cocoa does not update the "Window" menu for borderless windows
+        // so we have to do it manually.
+        [NSApp changeWindowsItem:fullscreenWindow title:title filename:NO];
+    }
 }
 
 - (void)setDocumentFilename:(NSString *)filename