Default case algorithms

Richard Wordingham richard.wordingham at
Wed Jun 25 03:10:08 CDT 2014

On Tue, 24 Jun 2014 17:46:10 +0100
Daniel Bünzli <daniel.buenzli at> wrote:

> So what am I implementing if I just map a string using XML UCD’s
> Uppercase_Mapping property ? Is that Unicode’s default uppercase
> mapping ?  

Yes - with the caveat that the uppercase mapping of U+0345 is too
complicated to defined formally.

On the other hand, the Lowercase_Mapping property seems to be inadequate
for the default lowercase mapping - Greek final sigma is the


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