[Dovecot] dovecot-auth %c variable is not working

In "doc/variables.txt"

For dovecot-auth there are also these variables:

%c - "secured" string with SSL, TLS and localhost connections. Otherwise empty.

%c does not appear to be working. I am trying to use it in a MySQL query userdb and passdb query and it is always empty string.

Timo, any chance you could post a patch that fixes this?

Thanks, Bill