config-prettyfaces/src/main/java/org/ocpsoft/rewrite/prettyfaces/OutboundRewriteRuleAdaptor.java
private String stripContextPath(final String contextPath, String uri)
   {
      if (!contextPath.equals("/") && uri.startsWith(contextPath))
      {
         uri = uri.substring(contextPath.length());
      }
      return uri;
   }
private String stripContextPath(final String contextPath, String uri)
   {
      if (!contextPath.equals("/") && uri.startsWith(contextPath))
      {
         uri = uri.substring(contextPath.length());
      }
      return uri;
   }
If the given URL is prefixed with this request's context-path, return the URI without the context path. Otherwise
return the URI unchanged.