So you are saying that Gmail (my emailer) would non-conformant under IDNA2008 to have sent "<a href="http://xn--bb-eka.at">http://ÖBB.at</a>" to you, and your emailer was also non-conformant by sending "<a href="http://xn--bb-eka.at">http://ÖBB.at</a>" back?<div>
<br></div><div>What value would it be to do that? Since we have agreed that the mapping is permanent, what gain would that have? I just don't understand.<br><div><div></div><div><br clear="all">Mark<br>
<br><br><div class="gmail_quote">2009/4/11 Patrik Fältström <span dir="ltr"><<a href="mailto:patrik@frobbit.se">patrik@frobbit.se</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im">On 12 apr 2009, at 03.13, Mark Davis wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
(2) I include <a href="http://xn--bb-eka.at" target="_blank">http://ÖBB.at</a> in this email message. My emailer is IDNA aware,<br>
and recognizes this as a URL. I send the email to yours, which is, I<br>
presume, also IDNA aware. I don't want either one to lowercase it.<br>
</blockquote>
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I think you show a case where you can not know before sending the email (as the domain name used in the URI is not a U-label) where the body of the text will end up, so I would say you MUST convert it to a U-label before sending it.<br>
<br>
This is exactly the confusion that exist in IDNA2003 that I see we must get away from. We must get people to use the U-label or A-label formats when passing things around (when not knowing DEFINITELY how the receiving side will treat the data).<br>
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Patrik<br>
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