~/path in ldaprc

[ms419@freezone.co.uk]

How does one specify a path relative to home directory in an ldaprc?

I tried:

TLS_KEY	~/tmp/key.pem
TLS_KEY	$HOME/tmp/key.pem
TLS_KEY	tmp/key.pem

The first two directives didn't work. The last was relative to the 
current working directory, not the home directory.

Any suggestions?

Thanks!

Jack