[idn] Re: Document Status?

[Simon Josefsson <jas@extundo.com>]

Patrik Fältström <paf@cisco.com> writes:

>> What you are proposing seem to
>> require a cut'n'paste protocol to be implemented in both the MUA and
>> the address book application.
>
> Not at all.

OK, then I misunderstood what you said.  Disregard my mail..

>> (d) Email program understands IDNA but is running in a non-Unicode
>>     environment.  The address is tagged and is transfered to address
>>     book application using e.g. ISO-8859-1.  IDNA doesn't handle or
>>     care about this scenario, but it do exists in the real world
>>     (e.g. my machine).
>
> See above, if the address is to be transferred to other application, it
> should either be negotiated that it is an IDN in a specific charset (like
> 8859-1) or sent as ACE.

Even tagging data as being an IDN encoded into a (legacy) coding
system isn't sufficient to use IDNA interoperably, as no transcoding
tables are specified.  But I'm starting to repeat myself from another
thread now.