matz	2007-12-25 01:36:14 +0900 (Tue, 25 Dec 2007)

  New Revision: 14619

  Modified files:
    trunk/ChangeLog
    trunk/include/ruby/encoding.h
    trunk/io.c
    trunk/string.c
    trunk/test/ruby/test_io_m17n.rb
    trunk/version.h

  Log:
    * include/ruby/encoding.h (rb_enc_left_char_head): new utility macro.
    
    * include/ruby/encoding.h (rb_enc_right_char_head): ditto.
    
    * io.c (appendline): does multibyte RS search in the function.
    
    * io.c (prepare_getline_args): RS may be nil.
    
    * io.c (rb_io_getc): should process character based on external
      encoding, when transcoding required.

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/version.h?r1=14619&r2=14618
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/string.c?r1=14619&r2=14618
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/ChangeLog?r1=14619&r2=14618
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/test/ruby/test_io_m17n.rb?r1=14619&r2=14618
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/io.c?r1=14619&r2=14618
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/include/ruby/encoding.h?r1=14619&r2=14618