title: Symfony console: how to define option as string containing spaces
body: <p>Is there any way to define option as string containing spaces, like this</p>
  
  <pre><code>$myscript.php test --comment="some string"
  </code></pre>
  
  <p>It outputs:</p>
  
  <pre><code>[RuntimeException]   
  Too many arguments.
  
  test [-c|--comment="..."]
  </code></pre>
  
  <p>However, it works if --comment doesn't contain spaces (for example: "some_string").</p>