title: updated to the latest jade and got error when rendering JavaScript code
body: <p>I updated jade today, as:</p>
  
  <p><code>npm update jade</code></p>
  
  <p>then got a error:</p>
  
  <p><code>Unexpected token {</code></p>
  
  <p>when rendering something like:</p>
  
  <pre><code>script(type='text/javascript')
    $.isSafari = /Safari/.test(navigator.userAgent) &amp;&amp; /Apple Computer/.test(navigator.vendor);
    if (!$.isSafari) {
    document.write('&lt;style&gt;.safari{display:none}&lt;/style&gt;');
    }
  </code></pre>
  
  <p>It was quite good yesterday because I tried it with all the same stuff for a non-updated jade project.</p>
  
  <p>Is there anyone knows how to avoid this?</p>
  
  <p>Thanks!</p>