Add ctags.

src/AppDelegate.m

@@ -124,7 +124,7 @@
     CGPoint itemOrigin = [[[_statusItem button] window] frame].origin;
 
     // NOTE: -5 because NSMenu pops up higher than wanted; don't know how
-    // it will behave on different displays and resolutions.
+    // it will behave on different displays, resolutions, or OS versions.
     CGFloat y =
         NSHeight([scrn visibleFrame]) + [scrn visibleFrame].origin.y - 5;
 

src/Makefile

@@ -29,5 +29,10 @@ $(EXEC).app: $(EXEC)
 	cp resources/AppIcon.icns $@/Contents/Resources/ && \
 	cp $(EXEC) $@/Contents/MacOS/
 
+# Requires universal-ctags for Objective-C.
+ctags:
+	ctags -R *.h *.m
+
 clean:
 	rm -rf $(EXEC) $(EXEC).dSYM $(EXEC).app
+