-#define MAP_3(f, it, ...) f(it)MAP_2(f, __VA_ARGS__)
-#define MAP_4(f, it, ...) f(it)MAP_3(f, __VA_ARGS__)
-#define MAP_5(f, it, ...) f(it)MAP_4(f, __VA_ARGS__)
-#define MAP_6(f, it, ...) f(it)MAP_5(f, __VA_ARGS__)
-#define MAP_7(f, it, ...) f(it)MAP_6(f, __VA_ARGS__)
-#define MAP_8(f, it, ...) f(it)MAP_7(f, __VA_ARGS__)
-#define MAP_9(f, it, ...) f(it)MAP_8(f, __VA_ARGS__)
-#define MAP_10(f, it, ...) f(it)MAP_9(f, __VA_ARGS__)
-#define MAP_11(f, it, ...) f(it)MAP_10(f, __VA_ARGS__)
-#define MAP_12(f, it, ...) f(it)MAP_11(f, __VA_ARGS__)
-#define MAP_13(f, it, ...) f(it)MAP_12(f, __VA_ARGS__)
-#define MAP_14(f, it, ...) f(it)MAP_13(f, __VA_ARGS__)
-#define MAP_15(f, it, ...) f(it)MAP_14(f, __VA_ARGS__)
-#define MAP_16(f, it, ...) f(it)MAP_15(f, __VA_ARGS__)
-#define MAP_17(f, it, ...) f(it)MAP_16(f, __VA_ARGS__)
-#define MAP_18(f, it, ...) f(it)MAP_17(f, __VA_ARGS__)
-#define MAP_19(f, it, ...) f(it)MAP_18(f, __VA_ARGS__)
-#define MAP_20(f, it, ...) f(it)MAP_19(f, __VA_ARGS__)
+#define MAP_3(f, it, ...) f(it) MAP_2(f, __VA_ARGS__)
+#define MAP_4(f, it, ...) f(it) MAP_3(f, __VA_ARGS__)
+#define MAP_5(f, it, ...) f(it) MAP_4(f, __VA_ARGS__)
+#define MAP_6(f, it, ...) f(it) MAP_5(f, __VA_ARGS__)
+#define MAP_7(f, it, ...) f(it) MAP_6(f, __VA_ARGS__)
+#define MAP_8(f, it, ...) f(it) MAP_7(f, __VA_ARGS__)
+#define MAP_9(f, it, ...) f(it) MAP_8(f, __VA_ARGS__)
+#define MAP_10(f, it, ...) f(it) MAP_9(f, __VA_ARGS__)
+#define MAP_11(f, it, ...) f(it) MAP_10(f, __VA_ARGS__)
+#define MAP_12(f, it, ...) f(it) MAP_11(f, __VA_ARGS__)
+#define MAP_13(f, it, ...) f(it) MAP_12(f, __VA_ARGS__)
+#define MAP_14(f, it, ...) f(it) MAP_13(f, __VA_ARGS__)
+#define MAP_15(f, it, ...) f(it) MAP_14(f, __VA_ARGS__)
+#define MAP_16(f, it, ...) f(it) MAP_15(f, __VA_ARGS__)
+#define MAP_17(f, it, ...) f(it) MAP_16(f, __VA_ARGS__)
+#define MAP_18(f, it, ...) f(it) MAP_17(f, __VA_ARGS__)
+#define MAP_19(f, it, ...) f(it) MAP_18(f, __VA_ARGS__)
+#define MAP_20(f, it, ...) f(it) MAP_19(f, __VA_ARGS__)