RewriteCond %{PATH_INFO} ^/foo/(baz|symfony)$
RewriteRule .* app.php [QSA,L,E=_ROUTING__route:foo,E=_ROUTING_bar:%1,E=_ROUTING_def:test]

RewriteCond %{REQUEST_METHOD} =GET [OR]
RewriteCond %{REQUEST_METHOD} =HEAD
RewriteCond %{PATH_INFO} ^/bar/([^/\.]+?)$
RewriteRule .* app.php [QSA,L,E=_ROUTING__route:bar,E=_ROUTING_foo:%1]