🚀 go-pugleaf

The Message Store standard (X.413) has a search command which uses
filters in the same format as in X.500.

I am wondering how "MATCHES FOR EQUALITY" is interpreted in such
filters for OR-names?

A minimum might be to accept those differences which are equivalent
according to X.402 clause 18.4, which specifies that attributes
of OR-addresses can be equivalent even if one of them is in
"Printable string" and the other in "Teletex String". Also, upper
and lower cases match, and the same country is equivalent if
it is given in the alphabetical or numerical form, and leading
and trailing spaces are insignifant.

In addition to this, an OR-name might contain only a directory
name, or only an OR-address, or both, and will still refer to
the same UA. Should such OR-names be considered equivalent in
Message Store searches?

Finally, some functional standards specify that you should be able
to omit some elements of OR-addresses, for example OU-s which
are not necessary to uniquely identifiy one UA. Should a filter
search in the Message Store then also regard two OR-names
are equivalent even if some superfluous OU-s are omitted
from one of them?