[luatex] setting lccode "automatically"

[Arno Trautmann]

Slightly off-topic, but:

Philipp Stephani wrote:
> […] lowercasing/uppercasing one character is context-dependent and can result in more than one character: the uppercase of ß is SS.

Actually, it is (or at least, can be, I don't want to start a
fundamental discussion) ẞ.

cheers
Arno

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