Eszett and IDNAv2 vs IDNA2008

Erik van der Poel erikv at
Sun Mar 15 18:22:35 CET 2009


If you are talking about the plug-in download page, maybe you will
recall that VeriSign intercepted DNS lookups containing non-ASCII
characters at their TLDs, and then redirected the browser to the
plug-in download page.


On Sun, Mar 15, 2009 at 10:02 AM, JFC Morfin <jefsey at> wrote:
> Dear Erik,
> I am not sure of the Internet and Internet users you talk about.
> May be will you want to access
> jfc
> 2009/3/15 Erik van der Poel <erikv at>
>> > The percentage of IE6 users who downloaded the VeriSign plug-in in
>> > order to access IDN-labeled resources was 100%.
>> :-)
>> Yes, but what percentage of the users that were redirected to the
>> plug-in download page actually downloaded it?
>> >> I'm not sure whether Eszett users are clamoring for IDNAbis. Perhaps
>> >> the Greeks are, but not because of Final Sigma. They want to solve
>> >> their tonos problem. And I have to agree that ZWJ/ZWNJ users seem to
>> >> be clamoring for IDNAbis.
>> >
>> > How on earth did IDNA2008 become a matter of providing support for this
>> > handful of code points?
>> I confess that I am overly focussed on this handful, primarily because
>> of compatibility issues.
>> Let's hope that if anybody creates plug-ins for IDNA2008, that they
>> implement them carefully and avoid further compatibility problems. The
>> IDNA2003 plug-ins exacerbated the Eszett/FinalSigma/ZWJ/ZWNJ problem
>> by performing those mappings on strings that are interchanged (HTML
>> hrefs), rather than limiting those mappings to the keyboard UI.
>> If IDNA2008 plug-ins start performing multiple lookups, we will
>> probably see HTML files start to take advantage of that. Then, when
>> the browser developers get around to implementing IDNA2008, they may
>> feel compelled to perform multiple lookups too, just to make those new
>> HTML files "work".
>> Of course, this WG's intention is to use multiple lookup as a
>> transition strategy, but if HTML files and Web sites that rely on the
>> "old" lookup don't disappear completely, the browser developers may
>> feel compelled to continue the multiple lookups, perhaps forever.
>> Programmers often add features, but are scared to remove features, for
>> fear of "breaking" something.
>> This is pretty common on the Web. The browsers are too lenient, and so
>> they end up having to support the Web sites and HTML files that take
>> advantage of that leniency forever.
>> Maybe I'm too pessimistic here, but I am quite concerned about multiple
>> lookup.
>> Erik
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