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Re: [Cbor] [Technical Errata Reported] RFC8610 (6527)

Sean Bartell <smbarte2@illinois.edu> Wed, 14 April 2021 14:54 UTC

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References: <20210411161045.9648FF40799@rfc-editor.org> <4986660B-EDCC-4D07-A74E-BBEBE698721D@tzi.org> <2E410DD1-D0E2-4137-B7E7-7FB18CF71971@tzi.org> <CALaySJJAzJgtQY9wuF1dgCQRfTSAz3Ofva-N-EwqcFGo_d6XEw@mail.gmail.com> <513F7F4F-E791-4B96-AF3E-42A7B1447EF7@ericsson.com> <73c7a676bea744e48390f9fdb2639843@DM6PR11MB3834.namprd11.prod.outlook.com> <5a2abb26-2a17-4b1b-b491-7bac8485e69a@www.fastmail.com> <DF1E72C2-D300-4561-A991-60D48F6EC027@tzi.org> <c46d6f4064f740eca0cf0a59abed211a@DM6PR11MB3834.namprd11.prod.outlook.com>
Date: Wed, 14 Apr 2021 09:53:02 -0500
From: Sean Bartell <smbarte2@illinois.edu>
To: Doug Ewell <doug@ewellic.org>, Carsten Bormann <cabo@tzi.org>
Cc: "christoph.vigano@uni-bremen.de" <christoph.vigano@uni-bremen.de>, Henk Birkholz <henk.birkholz@sit.fraunhofer.de>, Francesca Palombini <francesca.palombini=40ericsson.com@dmarc.ietf.org>, "cbor@ietf.org" <cbor@ietf.org>, "Murray S. Kucherawy" <superuser@gmail.com>, Christian Amsüss <christian@amsuess.com>, Barry Leiba <barryleiba@computer.org>
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Subject: Re: [Cbor] [Technical Errata Reported] RFC8610 (6527)
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On Wed, Apr 14, 2021, at 09:29, Doug Ewell wrote:
> I just wrote:
> 
> > I'd like to see separate ABNF definitions for UNICODE_SCALAR_VALUE,
> > HIGH_SURROGATE, and LOW_SURROGATE, and then see 'hexchar' defined in
> > terms of those. I think that would make it clearer what is going on.
> 
> Of course it can't be UNICODE_SCALAR_VALUE, but something like 
> NONSURROGATE that conveys the meaning "any 4-digit hex value excluding 
> surrogates."

I'd be happy with handling surrogate pairs this way; it's much clearer than putting everything in one rule. Other than that, I don't have any particular opinion about Carsten's proposals.

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