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).