Regex named captures patch

Server NGINX
1

The patch against 0.8.20. Usage examples:

server {
    server_name  ~^(www\.)?(?<name>.+)$;
    root  $name;
}

location ~^(?<script_name>/.+\.php)(?<path_info>.*)$ {
    fastcgi_param  SCRIPT_FILENAME  /path/to/php$script_name;
    fastcgi_param  PATH_INFO        $path_info;