Re: [precis] IANA's PRECIS Derived Property Value Registry

Suzanne Woolf <> Mon, 19 March 2018 15:52 UTC

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From: Suzanne Woolf <>
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Date: Mon, 19 Mar 2018 11:52:05 -0400
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To: Sam Whited <>
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Subject: Re: [precis] IANA's PRECIS Derived Property Value Registry
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> On Mar 19, 2018, at 11:42 AM, Sam Whited <> wrote:
> On Mon, Mar 19, 2018, at 10:20, John C Klensin wrote:
>> I concur with Andrew's comment and hope that PRECIS doesn't even
>> need revision or an explicit update.  However, you should also
>> note that those table are not normative and never have been, so
>> nothing prevents you from running your own calculations against
>> the derived property rules (which are the normative part).
> I am currently building tries based on the derived property rules, but would still appreciate the IANA values being updated. Normative or not, I would like to test my implementation against someone elses.

The IAB statement contains a rough target for the update to be done by June 2018. I can’t speak for either the designated expert or the IAB, but I’ve been informally assured that this won’t be a problem. So, I’d look for the updated tables by then.