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Re: [I18ndir] [art] New Version Notification for draft-bray-unichars-06.txt

Tim Bray <tbray@textuality.com> Mon, 02 October 2023 22:40 UTC

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From: Tim Bray <tbray@textuality.com>
Date: Mon, 02 Oct 2023 22:40:11 +0000
Message-ID: <CAHBU6itgC07j0P5DcACDyHSjEOG6=j5kWE=eYF8E0NA3mm_b5A@mail.gmail.com>
To: Carsten Bormann <cabo@tzi.org>
Cc: "Manger, James" <James.H.Manger=40team.telstra.com@dmarc.ietf.org>, "i18ndir@ietf.org" <i18ndir@ietf.org>, ART Area <art@ietf.org>, Rob Sayre <sayrer@gmail.com>
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Subject: Re: [I18ndir] [art] New Version Notification for draft-bray-unichars-06.txt
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On Oct 2, 2023 at 9:14:18 AM, Carsten Bormann <cabo@tzi.org> wrote:

>  The IETF could pound its collective fist and say "all ill-formed Unicode
> must be rejected”,
>
>
> Yes, please.
> The fact that this is the only reasonable way forward is the point of RFC
> 9413.
>

Now we agree! And further (especially given the threats described in
Unicode TR36) you often also want to reject control codes and
noncharacters.  I think the IETF should be shouting this!

To promote this, it would be helpful if people actually understood what the
problems are, and which code points to reject, and had a reference that
explained the issues and provided ABNF for what to accept, at increasing
levels of fussiness. Then when the IETF starts shouting, there will be a
short clean reference to accompany the shouting.



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