out.Append(NS_LITERAL_STRING("&#x"));
out.AppendLiteral("&#x");
static void ConvertNonAsciiToNCR(const nsAString& in, nsAFlatString& out){  nsAString::const_iterator start, end;  in.BeginReading(start);  in.EndReading(end);  out.Truncate();  while (start != end) {    if (*start < 128) {      out.Append(*start++);    } else {      out.Append(NS_LITERAL_STRING("&#x"));      nsAutoString hex;      hex.AppendInt(*start++, 16);      out.Append(hex);      out.Append((PRUnichar)';');    }  }}