1. Summary
The document shepherd is Alexey Melnikov. The responsible Area Director is Pete Resnick.
Application protocols using Unicode characters in protocol strings
need to properly prepare such strings in order to perform valid
comparison operations (e.g., for purposes of authentication or
authorization). This document defines a framework enabling
application protocols to perform the preparation and comparison of
internationalized strings ("PRECIS") in a way that depends on the
properties of Unicode characters and thus is agile with respect to
versions of Unicode.
This document obsoletes RFC 3454.
The document is suitable for Standard Track.
2. Review and Consensus
The approach used by the document is similar to IDNA 2008 approach
(use of Unicode character properties for deciding what to do with characters)
and thus wasn't controversial.
The WG spent some time deciding how many classes need to be defined
and what kind of class is suitable for "profiling" for different purposes.
In particular the discussion of use of spaces in Identifier class took a bit
of time. But the WG converged at the end.
3. Intellectual Property
Each author has confirmed conformance with BCP 78/79. There are no IPR disclosures on the document.
4. Other Points
There is a normative downref to draft-ietf-precis-mappings (an Informative document).
ID-Nits also complains a normative reference to RFC 20, because the RFC status is not known.