bug#21816: elisp-mode-tests fails on a case-preserving filesystem

[Alexis]

Stephen Leake <stephen_leake@stephe-leake.org> writes:

> I did not try a non-ASCII file name; I'm not sure how to 
> construct one that has a non-ASCII casing issue.

Perhaps use German Eszett / sharp S / Unicode LATIN SMALL LETTER 
SHARP S? The words 'Strasse' and 'Straße' are equivalent, but 
typically the latter is up-cased to 'STRASSE', rather than 
'STRAẞE'. (Indeed, LATIN CAPITAL LETTER SHARP S was only added to 
Unicode in version 5.1.) In turn, 'STRASSE' is typically 
down-cased to 'strasse'. Further, even the latest version of 
Unicode notes that SpecialCasing.txt doesn't handle this 
situation:

http://www.unicode.org/versions/Unicode8.0.0/ch03.pdf [p. 81]


Alexis.