one-true-awk/testdir/t.split3

*23f24377SWarner Losh{ a = $0 " " $0 " " $0
*23f24377SWarner Losh  if ($1 != "")
*23f24377SWarner Losh      n = split (a, x, "[" $1 "]")
*23f24377SWarner Losh  print n, x[1], x[2], x[3], x[4] }