rewrite rule with ? in url

[extremecarver]

okay - I noticed my homepage wouldn't load for www.velomap.org/de/ anymore
with this rule - 

location = /de/ {
	if ( $arg_s2member_paypal_notify ) {
	rewrite ^ / permanent;
	}
	try_files $uri $uri/ /index.php;
}


Seems to work - well I hope this is passing on all information correctly
still..

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,258420,258424#msg-258424