--- dwm.c
+++ dwm.c
@@ -274,11 +279,19 @@ static Drw *drw;
 static Monitor *mons, *selmon;
 static Window root, wmcheckwin;
 
+/* scratchpad */
+#define SCRATCHPAD_MASK_1 (1u << sizeof tags / sizeof * tags)
+#define SCRATCHPAD_MASK_2 (1u << (sizeof tags / sizeof * tags + 1))
+#define SCRATCHPAD_MASK_3 (1u << (sizeof tags / sizeof * tags + 2))
+static int scratchpad_hide_flag = 0;
+static Client *scratchpad_last_showed_1 = NULL;
+static Client *scratchpad_last_showed_2 = NULL;
+static Client *scratchpad_last_showed_3 = NULL;
 /* configuration, allows nested code to access above variables */
 #include "config.h"
 
 /* compile-time check if all tags fit into an unsigned int bit array. */
-struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
+struct NumTags { char limitexceeded[LENGTH(tags) > 28 ? -1 : 1]; };
 
 /* function implementations */
 void