title: Custom text macros in Xcode not getting invoked with control-dot
body: <p>I created an "ObjectiveC.xctxtmacro" file in ~/Library/Application Support/Developer/Shared/Xcode/Specifications with the code bellow. I see "Hello" in Xcode's Edit>Insert Text Macros>Objective-C menu item but when I try to invoke it using control-dot, nothing happens. Any ideas?</p>
  
  <pre><code>(
      {
          Identifier = objc.hello;
          BasedOn = objc;
          IsMenuItem = YES;
          Name = "Hello";
          TextString = "Hello, Xcode!";
          CompletionPrefix = "hello";
          IncludeContexts = ("xcode.lang.objc");
      }
  )
  </code></pre>