github.com/benhoyt/goawk@v1.8.1/testdata/t.for1 (about)

     1  {
     2  	i = 1
     3  	for (;;) {
     4  		if (i > NF)
     5  			next
     6  		print i, $i
     7  		i++
     8  	}
     9  }