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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.
+
 Sat Aug  1 19:23:27 2009  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* string.c (tr_trans): change condition of singlebyte