Subject: bug#13041: 24.2; diacritic-fold-search

From: Eli Zaretskii <[email-masked]>
Date: Tue, 11 Dec 2012 09:19:55 +0200

> From: "Drew Adams" <[email-masked]>
> Date: Sun, 9 Dec 2012 10:06:44 -0800
> Cc: [email-masked], [email-masked], [email-masked]
> 
> > Maybe it's explained here
> >    http://www.unicode.org/faq/idn.html
> > in the answer to
> > 
> >    Q: Why does IDNA2003 map final sigma (?) to sigma (s), map 
> >       eszett (ß) to "ss", and delete ZWJ/ZWNJ?
> > 
> > One possible interpretation of this is that mapping "ß" to "SS" would
> > imply that downcasing "SS" should produce "ß" and this is 
> > unwanted.
> 
> This is also covered in the Unicode Regexp spec.
> http://www.unicode.org/reports/tr18/

Another relevant Unicode document is the Unicode Collation Algorithm.
For the latest (yet unapproved) draft, see

  http://www.unicode.org/reports/tr10/proposed.html