title: Laravel XXS Filter - and passing "withInput" back to form
body: <p>Iam a bit confused, just installed an <a href="https://github.com/FrozenNode/XssInput" rel="nofollow">XSS Filter Package</a> for Laravel.
  Like mentioned in documentation i have enabled auto-filtering, works.</p>
  
  <p>But when i use the following Code to process form input:</p>
  
  <pre><code>    $input = Input::all();
      $validation = Validator::make($input, Comment::rules());
      // do some validation
  
      // not passed:
      return Redirect::back()
              -&gt;withErrors($validation)
              -&gt;withInput();
  </code></pre>
  
  <p>than the "bad" code is passed back to the form. For testing i have added</p>
  
  <pre><code>-&gt;withInput($input);
  </code></pre>
  
  <p>now the "bad" code is filtered.</p>
  
  <p>Now to my question why? What is the source for withInput when i don't pass an the input to it?</p>