need help cleaning up user directory and php rules

[Edho P Arief]

Here's how I did it (got it working properly) but wonder if I can
clean it up a bit (especially about trailing slash and
/~blah/file.php)

the rewrites for user directory (not including php) are from this
http://blog.sbf5.com/?p=6

server {
	listen 80;
	server_name domain.tld;
	root /usr/local/www/data;
	index index.php;

	location /~ {
		if ($request_uri ~ ^/~([^/]*)(/.*[^/]|)(/*)$) {
			set $homedir $1;
			set $filedir $2;
			set $trailingslashes $3;
			rewrite ^/~([^/]*)(/|$)(.*)$ f~/$3;
		}
	}

	location f~/ {
		alias /home/$homedir/public_html/;
		if (-d /home/$homedir/public_html$filedir) {
			rewrite ^f~/(.*) ~/$1;
		}
	}

	location ~/ {
		#autoindex on;
		alias /home/$homedir/public_html/;
		if ($trailingslashes = "") {
			rewrite .* /~$homedir$filedir/ redirect;
		}
	}

	location ~ \.php$ {
		if ($request_uri ~ ^/~([^/]*)(/.*)$) {
			set $newroot /home/$1/public_html;
			set $filedir $2;
		}
		if ($newroot = "") {
			set $newroot /usr/local/www/data;
			set $filedir $fastcgi_script_name;
		}
		if (!-f $newroot$filedir) {
			return 404;
			break;
		}
		fastcgi_pass 127.0.0.1:9000;
		fastcgi_index index.php;
		fastcgi_param SCRIPT_FILENAME $newroot$filedir;
		include fastcgi_params;
	}

	location ~ /\.ht {
	deny all;
	}
}




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