Addition of is_empty tests and changes to rem processing as a workaround to VC++ problem.

test/tuple_elem_bug_test.cxx

@@ -0,0 +1,38 @@
+# /* **************************************************************************
+#  *                                                                          *
+#  *     (C) Copyright Edward Diener 2014.
+#  *     Distributed under the Boost Software License, Version 1.0. (See
+#  *     accompanying file LICENSE_1_0.txt or copy at
+#  *     http://www.boost.org/LICENSE_1_0.txt)
+#  *                                                                          *
+#  ************************************************************************** */
+#
+# /* See http://www.boost.org for most recent version. */
+#
+# include <boost/preprocessor/cat.hpp>
+# include <boost/preprocessor/control/if.hpp>
+# include <boost/preprocessor/tuple.hpp>
+# include <libs/preprocessor/test/test.h>
+
+#define TN_GEN_ONE(p) (1)
+#define TN_GEN_ZERO(p) (0)
+#define TN_TEST_ONE_MORE(parameter,ens) \
+		BOOST_PP_IF \
+			( \
+			BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(1,0,ens),0), \
+			TN_GEN_ONE, \
+			TN_GEN_ZERO \
+			) \
+		(parameter) \
+/**/
+#define TN_TEST_ONE(parameter,ens) \
+	BOOST_PP_TUPLE_ELEM \
+		( \
+		1, \
+		0, \
+		TN_TEST_ONE_MORE(parameter,ens) \
+		) \
+/**/
+
+BEGIN TN_TEST_ONE(A,(1)) == 1 END
+BEGIN TN_TEST_ONE(A,()) == 0 END