splittest.nim

# Implementation
iterator split*(s, sub: string): string =
  ## Replaces `sub` in `s` by the string `by`.
  var a {.noinit.}: TSkipTable
  preprocessSub(sub, a)
  var i, j = 0
  let z = s.len()
  while true:
    j = findAux(s, sub, i, a)
    if j < 0: break
    yield substr(s, i, j - 1)
    i = j + len(sub)
  # copy the rest:
  if i != z:
    yield substr(s, i, j-1)

# Test
import strutils
when isMainModule:
  var y = 0
  for x in split("Hello, world!<br>Int, main. Void?<br>Terrible...<br>!","<br>"):
    echo(x)
    if y == 2: 
      break
    else:
      inc(y)