Re: LATIN CAPITAL LETTER SHARP S officially recognized

From: Philippe Verdy via Unicode <>
Date: Fri, 30 Jun 2017 19:02:31 +0200

True but this only applies to "simple case mappings" (those in the main
datatase), not to extended mappings (which are locale dependant, such as
mappings for dotted and undotted i in Turkish).

So the extended mappings can perfectly be changed for German: they are not
part of the stability policy and designed to be extensible. And this is
where you find the existing mapping from ß to SS (lossy case conversion),
that will change to ẞ (non lossy case conversion).

2017-06-30 18:48 GMT+02:00 Mathias Bynens via Unicode <>:

> On Fri, Jun 30, 2017 at 5:34 PM, Michael Everson via Unicode
> <> wrote:
> >
> > It would be sensible to case-map ß to ẞ however.
> I’m hoping this can happen — converting ß to SS is lossy, so mapping
> to ẞ would be far superior.
> However, <>
> says:
> “If two characters form a case pair in a version of Unicode, they will
> remain a case pair in each subsequent version of Unicode.
> If two characters do not form a case pair in a version of Unicode,
> they will never become a case pair in any subsequent version of
> Unicode.”
> 😢
Received on Fri Jun 30 2017 - 12:03:09 CDT

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