title: Symfony2 special chars in route path
body: <p>Symfony2 by default displays entity details by ID</p>
  
  <pre><code> /**
   * Finds and displays a State entity.
   * @Route("state/{id}", name="state_show")
   * @Template()
   */
  </code></pre>
  
  <p>I'd like to display name of the state, but most of states contains special chars (Polish special chars). </p>
  
  <p>Links work if I use {name} but it is safe to use special chars in link?</p>