How do I convert mod_rewrite (QSA option) to Nginx equivalent?
QSA is automatic in NGINX.
If you don't want it, add ? to the end of your new location
rewrite ^/foo /bar/index.php? last;
These rewrite rules made the scripts work:
rewrite ^/foo/([^?]*)(?:\?(.*))? /bar/index.php?title=$1&$2;rewrite ^/foo /bar/index.php;