- *
- * Reading the server in file may put many \0-terminated strings on the queue at
- * once. Successive calls of io_round() will make these available one by one.
- * Each such call cuts off bytes from the beginning of world.queue, up to and
- * including the last \0 byte that is followed by a non-\0 byte or ends the
- * queue. If the queue starts with a \0 byte, it and its \0 followers are cut
- * before returning anything after them. Reading from the input file stops only
- * at its end or when one or more byte were read and the next read returns 0
- * bytes. If the re-filled queue doesn't end in \0, a \0 byte is appended to it.