svn + ssh on another port

http://www.techper.net/2009/01/11/changing-port-number-of-svnssh-subversion-protocol/

configuration in .subversion/config:

[tunnels]
sshtunnel = ssh -p 12345

I can use a subversion URL like this: svn+sshtunnel:// and subversion will spawn the given command with the port option.