[VCARDDAV] IDN in EMAIL

[Peter Mogensen <apm at one.com>]

Hi,

I was wondering... should international domain names be punycoded in 
property values (like EMAIL)?

The reason I bring this up here is that there seems to be som confusion 
in RFC2426 vs. vCard4 draft.

RFC2426 says:
  3.3.2 EMAIL Type Definition
  Type encoding: 8bit

Which seems to imply that it's perfectly OK in vCard3 to code the 
address work at blåbærgrød.dk in plain QP UTF-8:

EMAIL;type=3DINTERNET;type=3DWORK;type=3Dpref:work at bl=C3=A5b=C3=A6rgr=C3=B8=d.dk

But the vCard4 draft says:
  7.4.2. EMAIL
  Value type:  A single text value
  EMAIL-value = addr-spec  ; from [RFC5322] section 3.4.1

And RFC5322 of course does not deal with IDN and allows only printable 
US-ASCII - which leads me to conclude that vCard4 would require domain 
names to be punycoded.

Am I wrong? Is this change on purpose?

kind regards,
Peter Mogensen