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

Rob Sayre <sayrer@gmail.com> Tue, 03 October 2023 18:20 UTC

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From: Rob Sayre <sayrer@gmail.com>
Date: Tue, 03 Oct 2023 11:19:46 -0700
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To: "Manger, James" <James.H.Manger=40team.telstra.com@dmarc.ietf.org>
Cc: Tim Bray <tbray@textuality.com>, "i18ndir@ietf.org" <i18ndir@ietf.org>, ART Area <art@ietf.org>
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Subject: Re: [I18ndir] [art] New Version Notification for draft-bray-unichars-06.txt
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On Mon, Oct 2, 2023 at 5:21 PM Manger, James <James.H.Manger=
40team.telstra.com@dmarc.ietf.org> wrote:

>
>    1. U+FFFD is an obvious choice to replace code units or scalars you
>    don’t want. But Unicode does allow choices. Unicode ch3
>    <https://www.unicode.org/versions/Unicode15.1.0/ch03.pdf> C10 only
>    says “with a marker such as U+FFFD”. Unicode TR36
>    <https://unicode.org/reports/tr36/#Substituting_for_Ill_Formed_Subsequences>
>    says “where U+FFFD is not available, a common alternative is "?"”. Java,
>    for instance, uses “?” is some common circumstances. Unichars does not
>    admit such an option.
>
>
I don't think the draft should get into that. TR36 says "Where the output
character set is not Unicode, though, this character may not be available."
There are probably innumerable similar issues if one tries to describe
non-Unicode outputs.

thanks,
Rob

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