matz	2007-12-19 23:15:05 +0900 (Wed, 19 Dec 2007)

  New Revision: 14334

  Modified files:
    trunk/ChangeLog
    trunk/string.c

  Log:
    * string.c (str_sublen): adjust position if position is not at the
      head of a character.
    
    * string.c (rb_str_chomp_bang): check if match start at the head
      of a character.

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/string.c?r1=14334&r2=14333
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/ChangeLog?r1=14334&r2=14333