matz	2008-02-15 17:14:40 +0900 (Fri, 15 Feb 2008)

  New Revision: 15486

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

  Log:
    * string.c (str_strlen): use search_nonascii() for performance.
    
    * string.c (str_nth): ditto.

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/string.c?r1=15486&r2=15485&diff_format=u
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/ChangeLog?r1=15486&r2=15485&diff_format=u
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/encoding.c?r1=15486&r2=15485&diff_format=u