title: Zenity - different returned values
body: <p>On "Linux Mint 16 Petra" i type this command :</p>
  
  <pre><code>zenity --list --column "test" a b c
  </code></pre>
  
  <p>I select the item 'a', then the returnning value is randomly </p>
  
  <pre><code>a or a|a
  </code></pre>
  
  <p>How do you explain this ? is it a zenity bug ?
  How to get only 'a' ?</p>
  
  <p>Regards.</p>