github.com/benhoyt/goawk@v1.8.1/testdata/t.split4 (about)

     1  { a = $0 " " $0 " " $0 " " 123
     2    n = split (a, x, /[ \t][ \t]*/)
     3    print n, x[1], x[2], x[3], x[4]
     4  }