Re: [VCARDDAV] IDN in EMAIL

Simon Perreault <simon.perreault@viagenie.ca> Tue, 02 November 2010 16:45 UTC

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Date: Tue, 02 Nov 2010 12:45:51 -0400
From: Simon Perreault <simon.perreault@viagenie.ca>
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Subject: Re: [VCARDDAV] IDN in EMAIL
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Sorry for not responding the first time you posted this. Probably
because I lack the knowledge necessary to determine what should be done.

This is important, folks.

On 2010-11-02 12:16, Peter Mogensen wrote:
> 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@blåbærgrød.dk in plain QP UTF-8:
> 
> EMAIL;type=3DINTERNET;type=3DWORK;type=3Dpref:work@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?

It was on purpose, but not for *this* purpose.

People who are knowledgeable about this, (I know there are plenty in
this working group.), please comment. Please indicate if anything should
be changed in the current text.

Thanks,
Simon
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