bug#21916: sort -u drops unique lines with some locales

[Christoph Anton Mitterer]

Hey.

(GNU coreutils 8.23)

Attached is a file, that, when sort -u'ed in my locale, looses lines
which are however unique.

I've also attached the locale, since it's a custom made one, but the
same seem to happen with "standard" locales as well, see e.g.
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=695489

Cheers,
Chris.

PS: Please keep me CCed, as I'm writing off list.

test-file
Description: Text document

test-file.unique-sorted
Description: Text document

en_DE
Description: Text document

smime.p7s
Description: S/MIME cryptographic signature