- From: Marcos Caceres <marcosc@opera.com>
- Date: Wed, 3 Mar 2010 12:50:24 +0100
- To: Arthur Barstow <art.barstow@nokia.com>
- Cc: public-webapps <public-webapps@w3.org>
Hi Art, Thanks for forwarding this. I've added P&C with the new BCP47 reference. I've also removed the reference to the obsolete RFC 4647 (P&C now links to RFC5646). Kind regards, Marcos On Mon, Mar 1, 2010 at 4:04 PM, Arthur Barstow <art.barstow@nokia.com> wrote: > Editors, All - FYI, some information from the I18N group re normative > reference for language tags. > > Begin forwarded message: > > From: ext Richard Ishida <ishida@w3.org> > Date: March 1, 2010 9:53:20 AM EST > Subject: Information about latest specs for language tagging > It seems that a number of people are unaware of recent changes with regards > to language tagging specifications. As it is important to use the right > reference for spec development, I hope the following information will prove > useful. > You used to specify a language tag using RFC 1766, and then RFC 3066, both > of which referred you to a list of ISO codes for language subtags and > another ISO list for country names. > RFC 3066 was replaced by two RFCs: 4646 (Tags for Identifying Languages) > and 4647 (Matching of Language Tags). These two RFCs were concatenated at a > single location under the name BCP 47. It is intended that BCP 47 will be an > unchanging name with a single, unchanging URI that gives access to the most > up-to-date RFCs as they are developed. This is particularly helpful since > it is not clear from reading RFC the itself that it has been obsoleted. > In September 2009, RFC 4646 was obsoleted by RFC 5646 (but RFC 4647 remains > current). RFCs 5646 and 4647 are still referred to as BCP 47, and BCP 47 is > accessed via the same URI as before. > The latest specifications for language tagging allow a number of different > types of subtag, over and above language and country/region, and point you > to the IANA Language Subtag Registry (rather than ISO code lists) to find > the (almost 8,000) subtags which are now available for use. > Any language tags constructed using the obsoleted RFCs are still valid > according to the syntax of the latest incarnation of BCP 47, though some > tags are now deprecated. > > We recommend that you currently use the following reference for language tag > syntax. > [BCP47] > Tags for Identifying Languages, A. Phillips and M. Davis, Editors, > September 2009. > Available at http://www.rfc-editor.org/rfc/bcp/bcp47.txt > The following additional links may be useful for further reading: > IANA Language Subtag Registry > http://www.iana.org/assignments/language-subtag-registry > Language tags in HTML and XML > http://www.w3.org/International/articles/language-tags/ > Choosing a Language Tag > http://www.w3.org/International/questions/qa-choosing-language-tags > Language Subtag Lookup tool http://rishida.net/utils/subtags/ > If you have further questions about language tags, please contact the i18n > WG. > Hope that helps, > RI > ============ > Richard Ishida > Internationalization Lead > W3C (World Wide Web Consortium) > http://www.w3.org/International/ > http://rishida.net/ > > -- Marcos Caceres http://datadriven.com.au
Received on Wednesday, 3 March 2010 11:51:19 UTC