Last Call: draft-mcwalter-langtag-mib (Language Tag MIB) to Proposed Standard

[Doug Ewell]

The IESG <iesg dash secretary at ietf dot org> wrote:

> The IESG has received a request from an individual submitter to 
> consider the following document:
>
> - 'Language Tag MIB '
>   <draft-mcwalter-langtag-mib-01.txt> as a Proposed Standard

This document defines a profile of RFC 4646 language tags for use in a 
particular application, by restricting the tags to lowercase and no more 
than 60 characters in length.

There is a recommended casing convention described in RFC 4646, section 
2.1 (e.g. "hmn-Latn-LA"), but tags are not intended to be 
case-sensitive, and applications such as this one may choose a different 
convention if it suits them.

Section 4.3 of RFC 4646 discusses tag length limitations and suggests a 
minimum length limit of 42 characters.  The proposed limit of 60 
characters in the I-D is greater than that minimum, and much greater 
than the likely maximum length of any non-private-use tag, and should 
pose no problem.

Since tags of 1 character are never well-formed, I suggest that the 
definition:

   SYNTAX      OCTET STRING (SIZE (0..60))

be amended to exclude the 1-character case.  I assume that a zero-length 
tag, while also not defined in RFC 4646, was included in the I-D to 
allow the special case of "no tag."

--
Doug Ewell  *  Fullerton, California, USA  *  RFC 4645  *  UTN #14
http://users.adelphia.net/~dewell/
http://www1.ietf.org/html.charters/ltru-charter.html
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