static box Main {
  main(args) {
    local src = "using foo\nusing bar"
    local n = src.length()
    local i = 0
    loop(i < n) {
      local j = i
      loop(j < n && src.substring(j, j+1) != "\n") { j = j + 1 }
      local line = src.substring(i, j)

      if line.length() > 0 {
        local p = line
        local idx = -1
        local t = 0
        loop(t < p.length()) {
          if p.substring(t,t+1) == " " { idx = t }
          t = t + 1
        }
        if idx >= 0 {
          p = p.substring(0, idx)
        }
        print("Processed: " + p)
      }

      i = j + 1
    }
    return 0
  }
}