Bug in join

[Cezary Sobaniec]

Hi folks,

Maybe I am wrong but I think I have found a bug in "join" tool.
Consider the following example:

I have two files, first is F1:

  a2:x

second is F2:

  a:x
  a2:x

Both are sorted using sort -t: -k 1,1.  LC_ALL is set to POSIX.  When
I run join I get nothing:

  $ join -t: F1 F2

When I set LC_ALL to en_US I get:

  a2:x:x

what I was expecting.

Question: why join sorts the lines in a different order when compared
to sort with the same settings (field separator, LC_COLLATE)?

This example works fine when the field separator is set to space:

  $ cat F1
  a2 x
  $ cat F2
  a x
  a2 x
  $ join -k 1,1 F1 F2
  a2 x x

--------------------------------------------------------------------------
My configuration:
join (coreutils) 4.5.8
SuSE Linux 8.2, 2.4.20-4GB i686


-- 
    ("`-''-/").___..--''"`-._          Cezary Sobaniec
     `6_ 6  )   `-.  (     ).`-.__.')  Institute of Computing Science
     (_Y_.)'  ._   )  `._ `. ``-..-'   Poznan University of Technology
   _..`--'_..-_/  /--'_.' ,'           address@hidden
  (il).-''  (li).'  ((!.-'             tel. (+48 61) 665-28-09