title: Redirect any URL starting with some characters
body: <p>I want to redirect something like:</p>
  
  <pre><code>domain/start[optional]/xxx
  </code></pre>
  
  <p>to</p>
  
  <pre><code>domain/something/xxx
  </code></pre>
  
  <p>I've tried to add to <code>.htaccess</code>:</p>
  
  <pre><code># Rewrite any start* route to something route
  RewriteCond %{REQUEST_URI}
  RewriteRule ^start[^/]*/(.*)$ /something/$1 [R=301, L]
  </code></pre>
  
  <p>but I'm getting an Internal Server Error. Any idea of what I'm doing wrong?</p>
  
  <p>The Apache logs says:</p>
  
  <blockquote>
    <p>RewriteCond: bad argument line '%{REQUEST_URI}'</p>
  </blockquote>