title: How to get name of the function
body: <p>I have a problem. How to know the name of the function that called my function without using the debug namespace. For example:</p>
  
  <pre><code>function test1()
     test2()
  end
  
  function test2()
     --How to get here name of function which have called my function test2.
     --How to get here "test1"?
  end
  </code></pre>
  
  <p>It's will be easy if I will be allow to use debug namespace, but I can use. Have anyone any idea?
  Sorry for my English.</p>