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+Mon Aug  3 13:05:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* array.c (rb_ary_{permutation,combination,product}): must not use
+	  ary_discard on strings.
+
 Mon Aug  3 00:32:00 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* random.c (rb_random_int): arguments have to be converted to