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[dispatch] Re: IETF WG state changed for draft-ietf-dispatch-mime-protobuf

Tim Bray <tbray@textuality.com> Tue, 08 July 2025 16:32 UTC

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From: Tim Bray <tbray@textuality.com>
Date: Tue, 08 Jul 2025 16:32:35 +0000
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Subject: [dispatch] Re: IETF WG state changed for draft-ietf-dispatch-mime-protobuf
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On Jul 8, 2025 at 10:26:23 AM, Rob Sloan <rmsj=40google.com@dmarc.ietf.org>
wrote:

> Hi Tim,
>
> > applies no restrictions to the contents of strings
>
> I am happy to add a section to encourage the safe handling of Unicode
> strings within a Protobuf encoding and cross-reference to this document.
> Your point that special or unassigned code points may cause application
> misbehavior is certainly well taken.
>

Would be happy to suggest language, but this isn’t rocket science: “Be
aware that some Unicode code points can cause problems, which are discussed
in [UNICHARS] and [PRECIS]."

Note that parse-time UTF-8 format enforcement on string fields is optional
> <https://protobuf.dev/editions/features/#utf8_validation> for backward
> compatibility with proto2.
>

Didn’t know that. Blecch.  Might be worth mentioning in the doc?

-T

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