<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">john,<DIV><BR class="khtml-block-placeholder"></DIV><DIV>I think there might have been an error in your example. </DIV><DIV>I would have thought that the non-IDNA browser which thinks</DIV><DIV>"." is the separator and does not know that "?" is intended</DIV><DIV>to be a separator would parse the underlined string below</DIV><DIV>into:</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>"www" "xn--0xaat?example" and "com"</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>your point is still correctly made - just the parsing looked wrong.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>vint</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV><DIV><DIV>On Dec 8, 2007, at 8:15 AM, John C Klensin wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><P style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px"><BR></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica"><SPAN class="Apple-converted-space"> </SPAN><A href="http://www.xn--0xaat?example.com/">http://www.xn--0xaat?example.com/</A></FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px"><BR></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">I copy that out and paste it into my browser, which we are still</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">assuming is not IDNA-aware.<SPAN class="Apple-converted-space"> </SPAN>Because the browser is not</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">IDNA-aware, the domain name is parsed into</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px"><BR></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica"><SPAN class="Apple-converted-space"> </SPAN>"www?xn--0xaat", "example" and "com"</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px"><BR></P> </BLOCKQUOTE></DIV><BR></DIV></BODY></HTML>