Re: [idn] Unicode tagging

[James Seng <James@Seng.cc>]

Are you refering to TXT RR?

if that is the case, explain which side of the problem you are worried:
the name of the TXT RR or the text of the TXT RR?

Secondly, the server/client (note I didnt say DNS) only need NFKC if
they need to do comparsion. On portion whereby it does not need to
compare, well, personally I have no comments.

-James Seng

Dan Oscarsson wrote:
> We must also remember that DNS does contain text that is not domain names.
> That text should not be normalised using form KC, here form C must be used.
> So DNS clients need to handle two forms of normalisation if KC is used
> for domain names (and it need to know what label is a host/domain name).
> Or shall we define that matching of labels shall always be matched using
> form KC? Even when a label is used for other things than host name?
> While we can require the query name to be of form KC and that matching
> of labels be done using form KC, the labels in DNS may not be of form KC
> as it destroys vital information (like replacing superscript 2 with normal 2,
> though replacing greek A with ASCII A is ok).
> 
>     Dan