ASN.1consortium
X.400 and X.500
nX.500 went for what became called "long-names" – character-based. nX.400 used both forms! (Differed a bit in the 1984 vs. 1988 versions) n Major fight on introduction of "short-names" into X.500 around 1988ish nAccepted, but never really took off or implemented.  Today, X.500 distinguished names are not considered "long" – compared, for example with Certificate Revocation Lists (CRLs).