title: using the DIAMOND operator with xml::twig
body: <p>I have the following xml::twig</p>
  
  <pre><code>my $t = XML::Twig-&gt;new(
  twig_handlers =&gt; {
  
   r =&gt; sub {   #my code here}            
  
   );
  $t-&gt;parse( &lt;&gt;); #I want here to read multiple files as input and parse them but get an error ,
  </code></pre>
  
  <p>is it possible to do that with xml::twig ?</p>