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Language Tag Registry Update

Document Charter Language Tag Registry Update WG (ltru)
Title Language Tag Registry Update
Last updated 2009-11-30
State Approved
WG State Concluded
IESG Responsible AD (None)
Charter edit AD (None)
Send notices to (None)

The primary language subtags allowed by the current IANA Language
  Subtag Registry are limited to ISO 639-1 and ISO 639-2 in the same
  way as they were limited by RFC 3066. This covers approximately 500
  possible language subtags. ISO 639-3, scheduled for approval towards
  the end of 2006, will make available around 7000 more code elements
  for identifying languages.
  The working group will prepare an update to the Language Subtag
  Registry procedures to allow the use of 3-letter code elements
  from ISO 639-3 as primary language subtags or extended language
  subtags as appropriate. The working group will also deliver means
  to update the current IANA Language Subtag Registry with the newly
  available subtags.
  The working group will examine, and if necessary clarify or adjust,
  procedures and guidelines with respect to extended language subtags
  and variant subtags. Use cases include the identification of
  signed languages, transliterations, and transcriptions.
  The working group will also consider how the draft work on
  ISO 639-6 may relate to the future development of language tags.
  The working group will clarify text where necessary. It may also
  make adjustments to the registration process and the form of the
  registry if this is deemed appropriate based on ongoing registration
  and operational experience. These adjustments and clarifications
  are not expected to delay the progress of the work.
  Work on the drafts is planned to start before ISO 639-3 is fully
  approved and published. However, the WG will not finalize the
  drafts before ISO 639-3 is fully approved.