Function merge

lib/internal/url.js:1397–1423

(out, start, mid, end, lBuffer, rBuffer)

// for merge sort
function merge(out, start, mid, end, lBuffer, rBuffer) {
  const sizeLeft = mid - start;
  const sizeRight = end - mid;
  let l, r, o;

  for (l = 0; l < sizeLeft; l++)
    lBuffer[l] = out[start + l];
  for (r = 0; r < sizeRight; r++)
    rBuffer[r] = out[mid + r];

  l = 0;
  r = 0;
  o = start;
  while (l < sizeLeft && r < sizeRight) {
    if (lBuffer[l] <= rBuffer[r]) {
      out[o++] = lBuffer[l++];
      out[o++] = lBuffer[l++];
    } else {
      out[o++] = rBuffer[r++];
      out[o++] = rBuffer[r++];
    }
  }
  while (l < sizeLeft)
    out[o++] = lBuffer[l++];
  while (r < sizeRight)
    out[o++] = rBuffer[r++];
}

function domainToASCII(domain) {
  if (arguments.length < 1)