Description of problem:

Per join(1) manpage, the "join" utility is supposed to print the "Join field", then remaining fields from FILE1, then remaining fields from FILE2:

"Default FORMAT outputs  the  join  field, the remaining fields from FILE1, the remaining fields from FILE2, all separated by CHAR."

When printing unpairable lines from FILE2 (using the "-v 2" option) and specifying the second field as "Join field" (using the "-2 2" option), the fields are printed in wrong order.


Version-Release number of selected component (if applicable):

coreutils-8.4-46.el6


How reproducible:

Always

Steps to Reproduce:

$ echo "a b" | join -v 2 -2 2 /dev/null -

Actual results:

"a b"

Expected results:

"b a"

Additional info:

The issue is not present on RHEL7 (coreutils-8.22).
The issue happens only when printing unpaired lines of FILE2.

Everything works with FILE1 as shown below:

$ echo "a b" | join -v 1 -1 1  - /dev/null
a b

Joining on second field, displaying unjoinable lines from first file:
$ echo "a b" | join -v 1 -1 2  - /dev/null
b a