| Subject: | * -> * |
Looks like all that's needed to support * -> * is a new line in this block:
my $required = $config{"$from -> $to"}
|| $config{"* -> $to"}
|| $config{"$from -> *"}
|| [];
making it
my $required = $config{"$from -> $to"}
|| $config{"* -> $to"}
|| $config{"$from -> *"}
|| $config{"* -> *"}
|| [];