http://www.ietf.org/mail-archive/web/ietf/current/msg47378.html http://www.ietf.org/mail-archive/web/ietf/current/msg47387.html http://www.ietf.org/mail-archive/web/ietf/current/msg47444.html http://www.ietf.org/mail-archive/web/ietf/current/msg47574.html
These posts appear to be about the _names_ assigned to characters in RFC 1345, which isn't relevant here.