IDNA2008 and Unicode 11.0.0
draft-faltstrom-unicode11-04

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Network Working Group                                       P. Faltstrom
Internet-Draft                                                    Netnod
Intended status: Informational                          October 07, 2018
Expires: April 10, 2019

                      IDNA2008 and Unicode 11.0.0
                      draft-faltstrom-unicode11-04

Abstract

   This document describes changes between Unicode 6.3.0 and Unicode
   11.0.0 in the context of IDNA2008.  It further suggests for the IETF
   a path forward regarding ensuring IDNA2008 follows the evolution of
   the Unicode Standard.

   In a few cases changes have been made in the Unicode Standard related
   to the algorithm IDNA2008 specifies.  IDNA2008 do give the ability to
   add exceptions for backward compatibility to the algorithm but the
   conclusions provided in this document suggests no such changes.

   Thus this document requests that IANA update the tables to Unicode
   11.

   In addition, all registries should continue the practice of
   calculating a repertoire using conservatism and inclusion principles.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on April 10, 2019.

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Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Keywords for Requirement Levels . . . . . . . . . . . . . . .   4
   3.  Background  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  IDNA2008 Documents  . . . . . . . . . . . . . . . . . . .   4
     3.2.  Deployment  . . . . . . . . . . . . . . . . . . . . . . .   5
   4.  Notable changes between Unicode 6.3.0 and 11.0.0  . . . . . .   6
     4.1.  Changes to Unicode 7.0.0  . . . . . . . . . . . . . . . .   6
     4.2.  Changes between Unicode 7.0.0 and 10.0.0  . . . . . . . .   7
     4.3.  Changes to Unicode 11.0.0 . . . . . . . . . . . . . . . .   7
   5.  Conclusion  . . . . . . . . . . . . . . . . . . . . . . . . .   8
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     9.2.  Non-normative references  . . . . . . . . . . . . . . . .  10
   Appendix A.  Changes from Unicode 6.3.0 to Unicode 7.0.0  . . . .  12
   Appendix B.  Changes from Unicode 7.0.0 to Unicode 8.0.0  . . . .  15
   Appendix C.  Changes from Unicode 8.0.0 to Unicode 9.0.0  . . . .  16
   Appendix D.  Changes from Unicode 9.0.0 to Unicode 10.0.0 . . . .  17
   Appendix E.  Changes from Unicode 10.0.0 to Unicode 11.0.0  . . .  18
   Appendix F.  Code points in Unicode Character Database (UCD)
                format for Unicode 11.0.0  . . . . . . . . . . . . .  20
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  79

1.  Introduction

   The current version of Internationalized Domain Names for
   Applications (IDNA) was largely completed in 2008, known within the
   series and elsewhere as "IDNA2008" and is specified in a series of
   documents (see Section Section 3.1).  The standard include an

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   algorithm by which a derived property value is calculated based on
   the properties defined in the Unicode Standard.

   When the Unicode Standard is updated code points are assigned and
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