github.com/benhoyt/goawk@v1.8.1/testdata/t.split9 (about)

     1  {
     2  	n = split ($0, x, FS)
     3  	if (n != NF)
     4  		print "botch at ", NR, n, NF
     5  	for (i=1; i<=n; i++)
     6  		if ($i != x[i])
     7  			print "diff at ", i, x[i], $i
     8  }