$fc = Zend_Controller_Front::getInstance();
$routeur = $fc->getRouter();
$routeur->removeDefaultRoutes();
$p = '([[:alpha:]]+)';
$vars = array('controller'	=> array($p, 'index'),
	      'action'		=> array($p, 'index'),
	      'format'		=> array($p, 'xhtml'),
	      '#'		=> array('(.*)', ''));

$pattern = '[index[/%controller%[/%action%]][.%format%][/%#%]]';
$route = new Knema_Controller_Router_Route_Uri($vars,
					       $pattern);
$routeur->addRoute('default', $route);