matz	2008-06-12 08:52:20 +0900 (Thu, 12 Jun 2008)

  New Revision: 17104

  Modified files:
    trunk/ChangeLog
    trunk/io.c
    trunk/string.c

  Log:
    * io.c (read_all): should use io_read_encoding(), not
      io_input_encoding().
    
    * io.c (rb_io_getline_1): reduce calling of io_read_encoding().
    
    * string.c (rb_str_scan): need not to restore $~ value, so avoid
      pinning match object.

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/string.c?r1=17104&r2=17103&diff_format=u
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/ChangeLog?r1=17104&r2=17103&diff_format=u
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/io.c?r1=17104&r2=17103&diff_format=u