Do we need more compute on the CDDL operators for oids/sdnvseqs?

[cabo]

https://mailarchive.ietf.org/arch/msg/cbor/2_qmMQ2B_o21YQVnfkhCb0-BS0U

• Section 7 - If we do nesting behavior on these tags, then a control
  operator to make A relative to B would be useful as well.

Again, if you have an example for that, I’m all ears.

root-sha2 = bytes .sdnvseq [ 60 840 1 101 3 4 2 ]
root-sha256 = byte .sdnvseq [ 60 840 1 101 3 4 2 1 ]
rel-sha25 = root-sha256 .oidrel root-sha2

So this would be a "subtraction" operator, which by the way would work on general byte strings and not just on OID representations.

[cabo]

Given that this is a more general operator, we don't really need to do it here, so I'm closing this ticket here.