[IPP] What natural-language registry is used by IPP?

[Michael Sweet]

Glen,

On Apr 30, 2012, at 3:59 PM, Petrie, Glen wrote:
> Can someone provide me the reference for the natural-language registry is used by IPP?


>From RFC 2911:

4.1.8 'naturalLanguage'

   The 'naturalLanguage' attribute syntax is a standard identifier for a
   natural language and optionally a country.  The values for this
   syntax type are defined by RFC 1766 [RFC1766].  Though RFC 1766
   requires that the values be case-insensitive US-ASCII [ASCII], IPP
   requires all lower case to simplify comparing by IPP clients and
   Printer objects.  Examples include:

      'en':  for English
      'en-us': for US English
      'fr': for French
      'de':  for German

   The maximum length of 'naturalLanguage' values used to represent IPP
   attribute values is 63 octets.

which leads to RFC 3282 (the replacement), which references ISO 639, 639-2, 3166, and 15924.

_________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair


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