ref: f01859c469dac3ed01d36a656cce03f0b63abae1 dir: /test/t.split9/
{ n = split ($0, x, FS) if (n != NF) print "botch at ", NR, n, NF for (i=1; i<=n; i++) if ($i != x[i]) print "diff at ", i, x[i], $i }