Issue #7300 has been updated by hsbt (Hiroshi SHIBATA). ?????¤ã????????äº?è§£ã?§ã????? 2.0.0 äº??????±å????¯æ???????? Rails ??¢ã????ªã?±ã?¼ã?·ã?§ã?³ã?§ã????§ã????¯ã?????çµ??????ªã?®ã?§ã????»ã?¨ã????©ã??å®??????¨ã?«å½±??¿ã?®ã??????????§ã????? ä»?å¾???¯ã????®ã????¨ã??詳ã??????¸ã??????¨ã?«ã????¾ã????? ---------------------------------------- Bug #7300: Hash#[] ??®æ???????? 1.9.3 ??¨ç?°ã?ªã?£ã?¦ã????? https://bugs.ruby-lang.org/issues/7300#change-32598 Author: hsbt (Hiroshi SHIBATA) Status: Assigned Priority: Normal Assignee: nobu (Nobuyoshi Nakada) Category: core Target version: 2.0.0 ruby -v: ruby 2.0.0dev (2012-11-07) [x86_64-darwin12.2.0] Hash[[nil]] ???å®?è¡?????????? 1.9.3 ??§ã?? {} ??¨ã?ªã???????®ã?? 2.0.0 ??§ã?? ArgumentError ??¨ã?ªã????¾ã????? ??ªã?????????????«ç?¸è???????¦ã?¿ã????????2.0.0 ??®å????????ä¸?æ£ã?ªã????®ã???????§ã????¯ã????¦ã?¦æ£??????????????? ???????????¨ã??????????¦ã??????????¾ã???????????2.0.0 ??§ã?? dupricate ??®è¦???????????«ã????¦ã?? 次ã?®ã?ªã?ªã?¼ã?¹ã?§æ???????¨ã???????¹ã????¯ã??????????«æ???????¾ã????? -- http://bugs.ruby-lang.org/