[XeTeX] Lowercase Unicode code points in hyphenation patterns

[Joseph Wright]

On 24/11/2019 19:42, Joseph Wright wrote:
> This has of course come up before, and I'd like to add to the expl3 case 
> changers. However, I've not been able to track down any formal statement 
> on the case mappings: are they in the UCD, some official publication, ...?
> 
> Joseph

Found the appropriate .xml files in the CLDR: see attached.

I plan to make some revisions to the expl3 case changer over the next 
month or two: I'll likely incorporate this information.

Joseph
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