X11 forwarding combined with sudo

Unfornunately I have no better solution found for X-forwarding and sudoing afterwards, yet.

This solution is insecure, but works as a dirty hack.

user:~$ xauth list | grep unix$(echo $DISPLAY | cut -c10-12) > /tmp/xauth
user:~$ sudo -s
root:~# xauth add $(cat /tmp/xauth)
root …