[tlbuild] casefolding fallback search

[Norbert Preining]

> Any version of Mac OS X / macOS can have the hard drive formatted as
> either case sensitive or case insensitive. Nothing changed with 10.13.

Is there a syscall that determines sensitivity?

It is not possible to check on each kpse call whether the fs is case
sensitive by creating files and checking for case variants.

Norbert

--
PREINING Norbert                               http://www.preining.info
Accelia Inc.     +    JAIST     +    TeX Live     +    Debian Developer
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