Bug #3827: ext/readline can’t handle cursor keys and cp932 chars
http://redmine.ruby-lang.org/issues/show/3827
$B5/I<<T(B: Akio T.
$B%9%F!<%?%9(B: Open, $BM%@john(B: Normal
$B%+%F%4%j(B: ext
ruby -v: ruby 1.9.2p0 (2010-08-18 revision 29036) [i386-mswin32_100]
Ruby-1.9.2-p0$B$N(Bext/readline$B$H!"(BGNU libreadline-4.3.2
(http://jarp.does.notwork.org/win32/)$B$NAH$_9g$o$;$G%+!<%