This document defines the Internationalized Resource Identifier (IRI)
protocol element, as an extension of the Uniform Resource Identifier
(URI). An IRI is a sequence of characters from the Universal
Character Set (Unicode/ISO 10646). Grammar and processing rules are
given for IRIs and related syntactic forms.
In addition, this document provides named additional rule sets for
processing otherwise invalid IRIs, in a way that supports other
specifications that wish to mandate common behavior for 'error'
handling. In particular, rules used in some XML languages (LEIRI)
and web applications are given.
Defining IRI as new protocol element (rather than updating or
extending the definition of URI) allows independent orderly
transitions: other protocols and languages that use URIs must
explicitly choose to allow IRIs.
Guidelines are provided for the use and deployment of IRIs and
related protocol elements when revising protocols, formats, and
software components that currently deal only with URIs.
[RFC Editor: Please remove this paragraph before publication.] This
document is intended to update RFC 3987 and move towards IETF Draft
Standard. This is an interim version in preparation for the IRI BOF
at IETF 76 in Hiroshima. For discussion and comments on this draft,
please use the email@example.com mailing list.