Hi,

In message "[ruby-talk:12427] IO#close_read,close_write"
    on 01/03/12, Mathieu Bouchard <matju / sympatico.ca> writes:

|Why does IO#close_read complain on a read-only IO object when it could
|just do the same as IO#close in that case? Similarly, for IO#close_write
|on a write-only IO object.

Does it?

  open("/dev/null", "r").close_read

does not complain on my machine.

							matz.