test case: define a 'test' provider in rest.ini, give it a 'test' route:

    public function getRoutes()
    {
        $routes = array(
            new ezpRestVersionedRoute( new ezpMvcRailsRoute( '/test', 'ezpTestProvider2', 'test' ), 1 ),
        );
        return $routes;
    }

result: route will not be match

error: ezpRestPrefixFilterInterface::filterRequestUri, where it removes the name of the tokens fropm the uri. The str_replace should only be done on 1st element matching.