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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>So these 4 characters would be TRANSITIONAL, and then they’d fail completely until we’d determined the risk of breaking was low, and then we’d change them to PVALID?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>My immediate concern would be the impact on ZWJ/ZWNJ. It seems like that making those TRANSITIONAL would delay the adoption of an entire language. I’m also concerned with the really-slow adopters. The security risk wouldn’t completely go away, it’d just be moved to those that didn’t update their browsers in 5 or whatever years.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>-Shawn<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> mark.edward.davis@gmail.com [mailto:mark.edward.davis@gmail.com] <b>On Behalf Of </b>Mark Davis ?<br><b>Sent:</b> , 01, 2009 9:49<br><b>To:</b> Alexander Mayrhofer<br><b>Cc:</b> Patrik Fältström; Shawn Steele; Harald Alvestrand; idna-update@alvestrand.no; lisa Dusseault; "Martin J. Dürst"; Vint Cerf<br><b>Subject:</b> Re: The real issue: interopability, and a proposal (Was: Consensus Call on Latin Sharp S and Greek Final Sigma)<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>…</span><br><br>When reading some of the transition proposals, one approach occurred to me. What if we have a new status for the 4 characters: TRANSITIONAL?<br><br>We set it up in this way; in IDNA2008, TRANSITIONAL characters are invalid for registration and lookup, AND cannot be mapped. After a period of some years, once the percentage of IDNA2003 browsers and emailers have dropped to a small proportion, the stated plan is to issue a new version of IDNA that changes them to PVALID.<br><br>That will cause currently valid URLs to fail, but that is far better than having them have ambiguous targets. This way we get to the long-term goal of having these characters be PVALID, without having the disruption during the interim.<br>…<o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'><br clear=all>Mark<br><br><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>