title: Define Symfony 2 tag attribute as an array in XML configuration?
body: <pre class="lang-xml prettyprint-override"><code>&lt;service id="my_service"&gt;
      &lt;tag name="my_transport" supports="feature1, feature2, feature3" /&gt;
  &lt;/service&gt;
  </code></pre>
  
  <p>Would be possible to define <code>supports</code> attribute as <code>array</code> when dealing with XML configuration, instead of doing a <code>preg_split</code>?</p>