bug in join

[Haidong Wang]

With following two simple files:

test1:
a       f
b       h
c       g

test2:
1       b
2       g
c       6

join -j 2 test1 test2

gives the wrong result which is nothing.

The correct result should be:
G       c       2

- Haidong
http://www-cs-students.stanford.edu/~hdwang/