Mimic lower_user in FR2

Hi, Since lower_user doesn't exist anymore in FR2, I was thinking of doing the following in FR2 to mimic the behaviour, which seems to be working correctly: In "hints" file: DEFAULT User-Name !~ /^$/ User-Name := `%{exec:/opt/tolower %{User-Name}}`, Fall-Through = Yes DEFAULT Stripped-User-Name !~ /^$/ Stripped-User-Name := `%{exec:/opt/tolower %{Stripped-User-Name}}`, Fall-Through = Yes Content of "/opt/tolower": #!/bin/sh echo -n "$1" | tr '[A-Z]' '[a-z]' Is there any reason why I should not do this or why it's not recommended? The servers on which I want to do this is not heavily loaded (<1req/s). Regards, Thor.