Language Registrations needed for i-unknown and i-mixed

Bob Wyman bob at
Wed Jan 21 07:41:49 CET 2004

Addison Phillips wrote:
>You should note that RFC3066 actually says the following 
> about the lovely 'mul' and 'und' codes:
     Of course, 'mul' and 'und' provide precisely what I was 
looking for in 'i-mixed' and 'i-unknown.' I should apologize 
for having troubled you folk with a request for something 
that was already there. The problem is that I was reading the 
old RFC1766 which is referenced from RSS V2.0 specs (via HTML 
4.0) rather than the newer RFC3066. 'mul' and 'und' aren't 
mentioned in RFC1766. And, I didn't think to look in ISO 639-
2... My apologies again. (RTFM)

>The xml:lang tag can be applied on many elements and 
> multi-lingual texts are generally better served when the
> tagging actually conveys the language at the closest level
> of relationship.
    I agree with what you say here. The problem is, of 
course, that RSS V2.0 has defined its own mechanism for 
conveying information about language and, as it is clear, 
that mechanism is much less flexible than that which is 
provided by XML itself. My fear is that there are a great 
number of home-grown parsers that process RSS feeds by 
searching for complete tags and those parsers will fail if I 
start inserting xml:lang attributes...

Francois Yergeau wrote:
> Your problem will not really be solved without tagging the 
> stuff, so you'd better get started and get aggregators to
> pick it up.  Use the standard xml:lang, though.
    If only it was so easy... There are so many aggregators 
that getting them all to work properly is going to be a 
challenge. Yet, there doesn't seem to be much choice.
   Thanks for your guidance on this issue.

     bob wyman

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