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+Internet Engineering Task Force (IETF)                       K. Whistler
+Request for Comments: 6082                                  Sybase, Inc.
+Obsoletes: 2482                                                 G. Adams
+Category: Informational                              Skynav (Phil), Inc.
+ISSN: 2070-1721                                                M. Duerst
+                                                Aoyama Gakuin University
+                                                         R. Presuhn, Ed.
+                                                              J. Klensin
+                                                           November 2010
+
+
+   Deprecating Unicode Language Tag Characters: RFC 2482 is Historic
+
+Abstract
+
+   RFC 2482, "Language Tagging in Unicode Plain Text", describes a
+   mechanism for using special Unicode language tag characters to
+   identify languages when needed without more general markup such as
+   that provided by XML.  The Unicode Consortium has deprecated that
+   facility and strongly recommends against its use.  RFC 2482 has been
+   moved to Historic status to reduce the possibility that Internet
+   implementers would consider that system an appropriate mechanism for
+   identifying languages.
+
+Status of This Memo
+
+   This document is not an Internet Standards Track specification; it is
+   published for informational purposes.
+
+   This document is a product of the Internet Engineering Task Force
+   (IETF).  It represents the consensus of the IETF community.  It has
+   received public review and has been approved for publication by the
+   Internet Engineering Steering Group (IESG).  Not all documents
+   approved by the IESG are a candidate for any level of Internet
+   Standard; see Section 2 of RFC 5741.
+
+   Information about the current status of this document, any errata,
+   and how to provide feedback on it may be obtained at
+   http://www.rfc-editor.org/info/rfc6082.
+
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+Whistler, et al.              Informational                     [Page 1]
+
+RFC 6082                  RFC 2482 to Historic             November 2010
+
+
+Copyright Notice
+
+   Copyright (c) 2010 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
+   (http://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. Action ..........................................................2
+   3. Security Considerations .........................................3
+   4. Acknowledgments .................................................3
+   5. References ......................................................3
+      5.1. Normative References .......................................3
+      5.2. Informative References .....................................3
+
+1.  Introduction
+
+   RFC 2482, "Language Tagging in Unicode Plain Text" [RFC2482],
+   describes a mechanism for using special Unicode language tag
+   characters to identify languages when needed.  It is an idea whose
+   time never quite came.  It has been superseded by whole-transaction
+   language identification such as the MIME Content-language header
+   [RFC3282] and more general markup mechanisms such as those provided
+   by XML.  The Unicode Consortium has deprecated the language tag
+   character facility and strongly recommends against its use.  RFC 2482
+   has been moved to Historic status to reduce the possibility that
+   Internet implementers would consider that tagging system an
+   appropriate mechanism for identifying languages.
+
+   A discussion of the status of the language tag characters and their
+   applicability appears in Section 16.9 of The Unicode Standard
+   [Unicode52].
+
+2.  Action
+
+   RFC 2482 has been deprecated and reclassified as Historic.  Internet
+   protocols and Standards-Track documents should not use the facilities
+   described in that document.
+
+
+
+Whistler, et al.              Informational                     [Page 2]
+
+RFC 6082                  RFC 2482 to Historic             November 2010
+
+
+3.  Security Considerations
+
+   By deprecating RFC 2482, we eliminate a facility that is no longer
+   encouraged or supported by the Unicode Consortium and that may have
+   been slightly risky in use if misinterpreted or if expectations of
+   support were not met.  So, if this action has any effect on Internet
+   security at all, it should be positive.
+
+4.  Acknowledgments
+
+   Helpful comments were received from Peter Koch and S. Moonesamy.
+
+5.  References
+
+5.1.  Normative References
+
+   [RFC2482]    Whistler, K. and G. Adams, "Language Tagging in Unicode
+                Plain Text", RFC 2482, January 1999.
+
+   [Unicode52]  The Unicode Consortium.  The Unicode Standard, Version
+                5.2.0, defined by: "The Unicode Standard, Version
+                5.2.0", (Mountain View, CA: The Unicode Consortium,
+                2009. ISBN 978-1-936213-00-9).
+                <http://www.unicode.org/versions/Unicode5.2.0/>.
+
+5.2.  Informative References
+
+   [RFC3282]    Alvestrand, H., "Content Language Headers", RFC 3282,
+                May 2002.
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+Whistler, et al.              Informational                     [Page 3]
+
+RFC 6082                  RFC 2482 to Historic             November 2010
+
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+Authors' Addresses
+
+   Kenneth Whistler
+   Sybase, Inc.
+   One Sybase Dr.
+   Dublin, CA  94568
+   USA
+
+   Phone: +1 925 236 7429
+   EMail: kenw@sybase.com
+
+
+   Glenn Adams
+   Skynav (Phil), Inc.
+   Lot 14 Boton Area
+   Subic Bay Freeport Zone  2222
+   Philippines
+
+   Phone:
+   EMail: glenn@skynav.com
+
+
+   Martin Duerst
+   Aoyama Gakuin University
+   5-10-1 Fuchinobe
+   Sagamihara, Kanagawa  229-8558
+   Japan
+
+   Phone: +81 42 759 6329
+   Fax:   +81 42 759 6495
+   EMail: duerst@it.aoyama.ac.jp
+
+
+   Randy Presuhn (editor)
+   San Jose, CA  95120
+   USA
+
+   Phone:
+   EMail: randy_presuhn@mindspring.com
+
+
+   John C Klensin
+   1770 Massachusetts Ave, Ste 322
+   Cambridge, MA  02140
+   USA
+
+   Phone: +1 617 245 1457
+   EMail: john+ietf@jck.com
+
+
+
+Whistler, et al.              Informational                     [Page 4]
+