Eszett and IDNAv2 vs IDNA2008

JFC Morfin jefsey at
Sun Mar 15 18:02:19 CET 2009

Dear Erik,I am not sure of the Internet and Internet users you talk about.
May be will you want to access

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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