On 7 May 2017 08:58 -0600, from arnold at skeeve.com:
>>> I don't imagine it would be hard to re-write [uniq] to handle utf-8.
>> 
>> It does look like at least GNU coreutils 8.13 uniq is broken in that
>> regard, which frankly surprised me. That version isn't _that_ old.
> 
> Are your LC_* env variables set correctly?

I believe so (I don't recall seeing any other UTF-8-related weirdness
for a very long time), but I would want to verify the behavior on a
system that doesn't have a gazillion customizations accumulated over
years _and_ has the most recent version of coreutils before I file an
actual bug report. (It's not like Debian is ever bleeding edge, to
begin with.) I'll see if I spin up a VM or three one of these days to
check.

-- 
Michael Kjörling • https://michael.kjorling.se • michael at kjorling.se
                 “People who think they know everything really annoy
                 those of us who know we don’t.” (Bjarne Stroustrup)