Re: Sort "in"compatibilities with xpg4...

I should mention that the behavior of Solaris 2.6 /usr/xpg4/bin/sort
has to be taken with a grain of salt, as it has several bugs in this
area (most likely because it isn't commonly used).  For example:

        $ cat t1
        y b
        x a
        $ /usr/xpg4/bin/sort -c -k 2 t1
        $ /usr/bin/sort -c -k 2 t1
        sort: disorder: x a
        $ sort -c -k 2 t1
        sort: t1:2: disorder: x a
        $ sort --version | sed 1q
        sort (coreutils) 4.5.11

Clearly /usr/xpg4/bin/sort is wrong here.