Adding scratchpad patch

patch/include.c

@@ -94,6 +94,10 @@
 #include "rotatestack.c"
 #endif
 
+#if SCRATCHPAD_PATCH
+#include "scratchpad.c"
+#endif
+
 #if SELFRESTART_PATCH
 #include "selfrestart.c"
 #endif

patch/include.h

@@ -94,6 +94,10 @@
 #include "rotatestack.h"
 #endif
 
+#if SCRATCHPAD_PATCH
+#include "scratchpad.h"
+#endif
+
 #if SELFRESTART_PATCH
 #include "selfrestart.h"
 #endif

patch/scratchpad.c

@@ -0,0 +1,23 @@
+static unsigned int scratchtag = 1 << LENGTH(tags);
+
+void
+togglescratch(const Arg *arg)
+{
+	Client *c;
+	unsigned int found = 0;
+
+	for (c = selmon->clients; c && !(found = c->tags & scratchtag); c = c->next);
+	if (found) {
+		unsigned int newtagset = selmon->tagset[selmon->seltags] ^ scratchtag;
+		if (newtagset) {
+			selmon->tagset[selmon->seltags] = newtagset;
+			focus(NULL);
+			arrange(selmon);
+		}
+		if (ISVISIBLE(c)) {
+			focus(c);
+			restack(selmon);
+		}
+	} else
+		spawn(arg);
+}

patch/scratchpad.h

@@ -0,0 +1 @@
+static void togglescratch(const Arg *arg);