diff --git a/sprout/functional/bind/bind.hpp b/sprout/functional/bind/bind.hpp
index 2570ab84..08e14026 100644
--- a/sprout/functional/bind/bind.hpp
+++ b/sprout/functional/bind/bind.hpp
@@ -200,7 +200,7 @@ namespace sprout {
 			: public std::integral_constant<
 				bool,
 				(sprout::is_placeholder<typename sprout::tuples::tuple_element<sprout::tuples::tuple_size<Bounds>::value - 1, Bounds>::type>::value
-					<= -256
+					<= sprout::is_placeholder<decltype(sprout::placeholders::_va)>::value
 					)
 			>
 		{};
@@ -216,7 +216,7 @@ namespace sprout {
 		>
 			: public std::integral_constant<
 				int,
-				(-256
+				(sprout::is_placeholder<decltype(sprout::placeholders::_va)>::value
 					- sprout::is_placeholder<typename sprout::tuples::tuple_element<sprout::tuples::tuple_size<Bounds>::value - 1, Bounds>::type>::value
 					)
 			>
@@ -627,7 +627,7 @@ namespace sprout {
 		template<sprout::index_t Index, typename BoundArg>
 		struct complete_placeholder<
 			Index, BoundArg,
-			typename std::enable_if<!(sprout::is_placeholder<BoundArg>::value == -1)>::type
+			typename std::enable_if<!(sprout::is_placeholder<BoundArg>::value == sprout::is_placeholder<decltype(sprout::placeholders::_)>::value)>::type
 		> {
 		public:
 			typedef BoundArg type;
@@ -635,7 +635,7 @@ namespace sprout {
 		template<sprout::index_t Index, typename BoundArg>
 		struct complete_placeholder<
 			Index, BoundArg,
-			typename std::enable_if<(sprout::is_placeholder<BoundArg>::value == -1)>::type
+			typename std::enable_if<(sprout::is_placeholder<BoundArg>::value == sprout::is_placeholder<decltype(sprout::placeholders::_)>::value)>::type
 		> {
 		public:
 			typedef sprout::placeholder<Index + 1> type;
diff --git a/sprout/functional/bind/udl.hpp b/sprout/functional/bind/udl.hpp
index 558461bf..9c0d082a 100644
--- a/sprout/functional/bind/udl.hpp
+++ b/sprout/functional/bind/udl.hpp
@@ -12,6 +12,7 @@
 namespace sprout {
 	//
 	// placeholders_result
+	// variadic_placeholders_result
 	//
 	template<char... Chars>
 	struct placeholders_result
@@ -19,11 +20,18 @@ namespace sprout {
 			sprout::placeholder<sprout::detail::digits_to_int<int, Chars...>::value>
 		>
 	{};
+	template<char... Chars>
+	struct variadic_placeholders_result
+		: public sprout::identity<
+			sprout::placeholder<sprout::is_placeholder<decltype(sprout::placeholders::_va)>::value - sprout::detail::digits_to_int<int, Chars...>::value>
+		>
+	{};
 
 	namespace placeholders {
 		namespace udl {
 			//
 			// _
+			// _tail
 			//
 			template<char... Chars>
 			SPROUT_CONSTEXPR typename sprout::placeholders_result<Chars...>::type
@@ -31,15 +39,23 @@ namespace sprout {
 				typedef typename sprout::placeholders_result<Chars...>::type type;
 				return type();
 			}
+			template<char... Chars>
+			SPROUT_CONSTEXPR typename sprout::variadic_placeholders_result<Chars...>::type
+			operator"" _tail() {
+				typedef typename sprout::variadic_placeholders_result<Chars...>::type type;
+				return type();
+			}
 		}	// namespace udl
 	}	// namespace placeholders
 
 	namespace udl {
 		namespace placeholders {
 			using sprout::placeholders::udl::operator"" _;
+			using sprout::placeholders::udl::operator"" _tail;
 		}	// namespace placeholders
 
 		using sprout::placeholders::udl::operator"" _;
+		using sprout::placeholders::udl::operator"" _tail;
 	}	// namespace udl
 }	// namespace sprout