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On 9/22/12 5:08 AM, "Martin J. Dürst" wrote:
> On 2012/09/22 3:53, Peter Saint-Andre wrote: One further thought:
> would it make sense to capture the fact that some new precis usages
> obsolete a old stringprep profiles?
> 
>> What does "obsoletes" mean here? Is the result still the same
>> (just a different framework), or are changes to the definition
>> allowed?

Good question. I mean "replaces" or "supersedes", where going forward
the new Precis usage is intended to be used instead of the old
Stringprep profile when handling the relevant protocol elements. For
example, the Precis profiles we're defining in draft-ietf-xmpp-6122bis
for XMPP localparts and resourceparts are intended to be used in the
future instead of the Nodeprep and Resourceprep profiles of Stringprep
first defined in RFC 3920. Although in the XMPP community we are
working to make sure that the new Precis profiles have very similar
output to the old Stringprep profiles (i.e., the same result using a
different framework), I think any changes to the definition are a
matter for the application protocol and not the Precis framework.

Another way to handle this matter is to make sure that the application
protocol specs contain an IANA action to change the status of the
relevant Stringprep profile(s):

http://www.iana.org/assignments/stringprep-profiles/stringprep-profiles.xml

Peter

- --
Peter Saint-Andre
https://stpeter.im/



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