title: multiple variable in get request of express
body: <p>I got a problem on my express server</p>
  
  <pre><code>app.get('/callback/:nation/:username/?:permalink', function(req, res)
              {
                  nationurl = req.params.nation;
                  username = req.params.username;
                  storypermalink = req.params.permalink;
  
  
                  console.log("nation: "+nation);
                  console.log("username: "+username);
                  console.log("permalink: "+permalink);
              });
  </code></pre>
  
  <p>Beacause of the <strong>/?:</strong> it split the username and doesn't give my permalink :</p>
  
  <pre><code>nation: poneyclub
  username: j
  permalink: hondoe
  </code></pre>
  
  <p>Anybody have an idea ?</p>