Possible definition for MVALID and a mapping table

[Patrik Fältström]

On 12 apr 2009, at 02.15, John C Klensin wrote:

> (3) Of the case-related operations, only toLowerCase is used to
> form mapping functions.

I would like you to be more specific here (as it took me a while to  
understand what these things means if you look in the Unicode tables).

What you talk about are cases C and S in CaseFolding.txt? Or just C?

Today, when talking about CaseFold, I use C+F for the stability tests  
in tables.

    Patrik

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