And the alternative is data "in the wild" that never had a chance to be conformant because the standard makes them impossible.
Use the PUA. That's what it's for. Done.
-- Doug Ewell | Thornton, Colorado, USA | http://www.ewellic.org RFC 5645, 4645, UTN #14 | ietf-languages @ http://is.gd/2kf0s
