Re: Bug in uniq 2.0 / 5.0

[Paul Eggert]

"Brancato, Mike" <address@hidden> writes:

> I tested this with the latest uniq with the same results.

I can't reproduce the problem, either with uniq (GNU textutils) 2.0 or
with uniq (coreutils) 5.0.1.  Here's how I tried to reproduce it:

  $ cat folderlist
  04-00-0002287
  $ cat allfolders
  04-00-0002287
  04-00-0002287
  $ cat folderlist allfolders | sort | uniq -u

The last command didn't output anything, which was what was expected.

Does the 'sort' command actually ensure that all instances of the
04-00-0002287 line are adjacent in its output?  That might explain the
problem; i.e., it might be a problem with 'sort', not with 'uniq'.

When you say "the latest uniq", are you talking about the latest
test version <ftp://alpha.gnu.org/gnu/coreutils/coreutils-5.0.1.tar.gz>?
Or is it some other version?

It could be a problem with your locale.  What is the output of the
"locale" command?  coreutils 5.0.1 "uniq" reports an error if it
detects that the locale is misconfigured; this doesn't suffice to
detect all locale bugs but it's better than nothing.  Perhaps you can
give that version a try.

Another possibility is to fix the locale misconfiguration by setting
LC_ALL="C" in your environment.

Perhaps we need your exact test data; can you make it available?