title: Can . (period) be part of the path part of an URL?
body: <p>Is the following URL valid?</p>
  <p><a href="http://www.example.com/module.php/lib/lib.php" rel="nofollow noreferrer">http://www.example.com/module.php/lib/lib.php</a></p>
  <p>According to <a href="https://www.rfc-editor.org/rfc/rfc1738" rel="nofollow noreferrer">https://www.rfc-editor.org/rfc/rfc1738</a> section the hpath element of an URL can not contain a '.' (period). There is in the above case a '.' after &quot;module&quot; which is not allowed according to RFC1738.</p>
  <p>Am I reading the RFC wrong or is this RFC succeed by another RFC? Some other RFC's allows '.' in URLs (<a href="https://www.rfc-editor.org/rfc/rfc1808" rel="nofollow noreferrer">https://www.rfc-editor.org/rfc/rfc1808</a>).</p>