BCP 47

RFC 4647

Matching of Language Tags, September 2006

Canonical URL:
https://www.rfc-editor.org/rfc/rfc4647.txt
File formats:
Plain TextPDF
Status:
BEST CURRENT PRACTICE
Obsoletes:
RFC 3066
Authors:
A. Phillips
M. Davis
Stream:
IETF
Source:
ltru (app)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC4647

Discuss this RFC: Send questions or comments to ltru@ietf.org

Other actions: Submit Errata  |  Find IPR Disclosures from the IETF


Abstract

This document describes a syntax, called a "language-range", for specifying items in a user's list of language preferences. It also describes different mechanisms for comparing and matching these to language tags. Two kinds of matching mechanisms, filtering and lookup, are defined. Filtering produces a (potentially empty) set of language tags, whereas lookup produces a single language tag. Possible applications include language negotiation or content selection. This document, in combination with RFC 4646, replaces RFC 3066, which replaced RFC 1766. This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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