matz	2007-12-24 02:38:32 +0900 (Mon, 24 Dec 2007)

  New Revision: 14542

  Modified files:
    trunk/ChangeLog
    trunk/io.c

  Log:
    * io.c (rb_io_external_encoding): should return the encoding of
      the file reading.
    
    * io.c (rb_io_internal_encoding): should return the encoding of
      read string.

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/ChangeLog?r1=14542&r2=14541
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/io.c?r1=14542&r2=14541