What’s an IETF discussion without a little pedanticism :)

You’re right, I was casual in my terms.

From: "tb...@textuality.com" <tb...@textuality.com>
Date: Tuesday, July 9, 2024 at 1:15 PM
To: Rich Salz <rs...@akamai.com>
Cc: "sec...@ietf.org" <sec...@ietf.org>, 
"draft-ietf-lisp-name-encoding....@ietf.org" 
<draft-ietf-lisp-name-encoding....@ietf.org>, "last-c...@ietf.org" 
<last-c...@ietf.org>, "lisp@ietf.org" <lisp@ietf.org>, Dino Farinacci 
<farina...@gmail.com>
Subject: Re: [Last-Call] Re: Secdir last call review of 
draft-ietf-lisp-name-encoding-08

On Jul 9, 2024 at 10:07:44 AM, "Salz, Rich" 
<rsalz=40akamai....@dmarc.ietf.org<mailto:40akamai....@dmarc.ietf.org>> wrote:
UTF8 is upward compatible with ASCII.  That is, all seven-bit ASCII characters 
are valid UTF8 characters.

I don’t want to be pedantic here (sigh, anything involving Unicode always 
becomes pedantic) but Rich, it wouldn’t actually be a good idea to require 
“UTF-8”. What you want to require is UTF-8 encoded Unicode characters, and 
probably not all of them.  PRECIS in RFC8264 provides a fully-thought-through 
subset of Unicode for identifiers. If that’s too complicated, 
https://www.ietf.org/archive/id/draft-bray-unichars-09.html<https://urldefense.com/v3/__https:/www.ietf.org/archive/id/draft-bray-unichars-09.html__;!!GjvTz_vk!UWWuj0bWf0Oig_1IQnMSRBhNtcEXdIBELfWbGKRSEHD5feWyojI62tpJZLIkJdVCQGuudPHmihfXXg$>,
 now under AD sponsorship by Orie, provides a much simpler but still useful 
subset.
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