const maxInt = int(^uint(0) >> 1)
			if len(s.buf) >= s.maxTokenSize || len(s.buf) > maxInt/2 {
				s.setErr(ErrTooLong)
				return false
			}
			newSize := len(s.buf) * 2
			if newSize == 0 {
				newSize = startBufSize
			}
			newSize = min(newSize, s.maxTokenSize)
			newBuf := make([]byte, newSize)
			copy(newBuf, s.buf[s.start:s.end])
			s.buf = newBuf

		if j < smallMaxTokenSize {
			j++
		} else {
			j--
		}
		buf.Write(tmp.Bytes())
		lineNum++
	}
	s := NewScanner(&slowReader{1, buf})
	s.Split(ScanLines)
	s.MaxTokenSize(smallMaxTokenSize)
	j = 0
	for lineNum := 0; s.Scan(); lineNum++ {
		genLine(tmp, lineNum, j, false)
		if j < smallMaxTokenSize {
			j++
		} else {
			j--
		}