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+Sat Aug  1 19:23:27 2009  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* string.c (tr_trans): change condition of singlebyte
+	  optimization.
+
 Sat Aug  1 18:50:53 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* random.c (random_float): rejects Infinity and NaN.