Issue #8855 has been reported by kachick (Kenichi Kamiya).

----------------------------------------
Bug #8855: {Single}Forwardable#def_delegators ??????String??§ã?¡ã?½ã???????????渡ã????????????????? __id__ to__send__ as String names.
https://bugs.ruby-lang.org/issues/8855

Author: kachick (Kenichi Kamiya)
Status: Open
Priority: Normal
Assignee: keiju (Keiju Ishitsuka)
Category: lib
Target version: 
ruby -v: ruby 2.1.0dev (2013-08-27 trunk 42710) [x86_64-linux]
Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN


https://github.com/ruby/ruby/pull/385

Forwardable#def_delegators ??? SingleForwardable#def_delegators ??§ã????????
String??§ã?¡ã?½ã???????????渡ã????????????????????__id__ ??? __send__ ???????????¤ã????¦ã?????????????§ã?????
?????????String???Symbol??®é????«é??????????ºã???????±ã?«æ???????³ã????ªã????£ã????®ã?§ã????????????????¸ã????¦ã?¿ã?¾ã????????
御確��?????????



-- 
http://bugs.ruby-lang.org/