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ref: 32397d07defce76d42a038e8b6b339b8a0c14699 parent: 5317028311f7eda55ab588bfca93f27bbb5cd839 author: S. Gilles <sgilles@math.umd.edu> date: Sat Jul 8 21:47:07 EDT 2017
Allow matching of empty structs and arrays