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Re: Standardizing on IDNA 2003 in the URL Standard

From: Gervase Markham <gerv@mozilla.org>
Date: Fri, 23 Aug 2013 11:03:49 +0100
Message-ID: <52173385.7070504@mozilla.org>
To: Vint Cerf <vint@google.com>
CC: "Jungshik SHIN (신정식)" <jshin1987+w3@gmail.com>, Anne van Kesteren <annevk@annevk.nl>, Mark Davis ☕ <mark@macchiato.com>, Shawn Steele <Shawn.Steele@microsoft.com>, IDNA update work <idna-update@alvestrand.no>, "PUBLIC-IRI@W3.ORG" <public-iri@w3.org>, "uri@w3.org" <uri@w3.org>, John C Klensin <klensin@jck.com>, Peter Saint-Andre <stpeter@stpeter.im>, Marcos Sanz <sanz@denic.de>, "www-tag.w3.org" <www-tag@w3.org>
On 23/08/13 10:49, Vint Cerf wrote:
> If we go down the IDNA2008 + TR46 path, I think we ought to be very
> explicit about a date certain to drop TR46 treatment so as to eliminate
> mapping and to instantiate the uniqueness properties of IDNA2008. Is
> that possible and what timeframe makes sense? The longer we wait, the
> harder it will be to get there.

What exactly do you mean by "TR46 treatment"?

As Mark says, TR46 is 3 things:

1) Different treatment for the 4 deviations (ZWJ, ZWNJ, eszett, sigma)
2) Allowance of non-letters
3) A mapping, e.g. casefolding

The use of a mapping such as the one defined in 3) is permitted by
IDNA2008; I would expect that mapping to continue being used
indefinitely, as a valid part of the system.

So are you asking about when we should drop 1) and 2)?

We should consider the option of not tying the two together.

Gerv
Received on Friday, 23 August 2013 10:04:24 UTC

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