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+Fri Dec  7 12:22:26 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* thread.c (rb_exec_recursive): use Hash instead of Array for
+	  performance improvement.  [ruby-core:13898]
+
 Thu Dec  6 19:52:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* parse.y (arg): typo fixed ("!" -> "|") in the ripper code.