X.400 and X.500
n X.500 went for what became called "long-names" –
character-based.
n X.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
n Accepted, but never really took off or implemented.
Today, X.500 distinguished names are not
considered "long" – compared, for example with
Certificate Revocation Lists (CRLs).