Default case algorithms

[Markus Scherer]

On Tue, Jun 24, 2014 at 4:56 PM, Daniel Bünzli <daniel.buenzli at erratique.ch>
wrote:

> Does an algorithm that simply applies R1 *regardless of context*
> constitute a default case algorithm or not ? I.e. does simply mapping each
> character C in a string using Uppercase_Mapping (C) (e.g. as exposed by the
> XML UCD) constitute a default case conversion as mandated by the standard ?
>

It implements simple uppercasing but not full uppercasing.
It misses simple, common things like ß -> SS (which is neither
language-dependent nor context-sensitive).

The wording of the standard is quite confusing since on p.115 many of the
> context dependent data of SpecialCasing.txt are mentioned as being data to
> « assist in the implementation of certain tailoring » and there is no clear
> indication in the definition of default case algorithm which
> context-sensitive mappings should be applied (if any).
>

http://www.unicode.org/reporting.html

markus
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