Adding stacker patch as requested ref. #17

patch/include.c

@@ -101,6 +101,9 @@
 #include "sortscreens.c"
 #endif // XINERAMA
 #endif
+#if STACKER_PATCH
+#include "stacker.c"
+#endif
 #if STICKY_PATCH
 #include "sticky.c"
 #endif

patch/include.h

@@ -101,6 +101,9 @@
 #include "sortscreens.h"
 #endif // XINERAMA
 #endif
+#if STACKER_PATCH
+#include "stacker.h"
+#endif
 #if STICKY_PATCH
 #include "sticky.h"
 #endif

patch/stacker.c

@@ -0,0 +1,74 @@
+void
+focusstack(const Arg *arg)
+{
+	int i = stackpos(arg);
+	Client *c, *p;
+
+	if (i < 0)
+ 		return;
+
+	#if ALWAYSFULLSCREEN_PATCH
+	if (!selmon->sel || selmon->sel->isfullscreen)
+		return;
+	#endif // ALWAYSFULLSCREEN_PATCH
+
+	for (p = NULL, c = selmon->clients; c && (i || !ISVISIBLE(c));
+	    i -= ISVISIBLE(c) ? 1 : 0, p = c, c = c->next);
+	focus(c ? c : p);
+	restack(selmon);
+}
+
+void
+pushstack(const Arg *arg)
+{
+	int i = stackpos(arg);
+	Client *sel = selmon->sel, *c, *p;
+
+	if (i < 0)
+		return;
+	else if (i == 0) {
+		detach(sel);
+		attach(sel);
+	}
+	else {
+		for (p = NULL, c = selmon->clients; c; p = c, c = c->next)
+			if (!(i -= (ISVISIBLE(c) && c != sel)))
+				break;
+		c = c ? c : p;
+		detach(sel);
+		sel->next = c->next;
+		c->next = sel;
+	}
+	arrange(selmon);
+}
+
+int
+stackpos(const Arg *arg)
+{
+	int n, i;
+	Client *c, *l;
+
+	if (!selmon->clients)
+		return -1;
+
+	if (arg->i == PREVSEL) {
+		for (l = selmon->stack; l && (!ISVISIBLE(l) || l == selmon->sel); l = l->snext);
+		if (!l)
+			return -1;
+		for (i = 0, c = selmon->clients; c != l; i += ISVISIBLE(c) ? 1 : 0, c = c->next);
+		return i;
+	}
+	else if (ISINC(arg->i)) {
+		if(!selmon->sel)
+			return -1;
+		for (i = 0, c = selmon->clients; c != selmon->sel; i += ISVISIBLE(c) ? 1 : 0, c = c->next);
+		for (n = i; c; n += ISVISIBLE(c) ? 1 : 0, c = c->next);
+		return MOD(i + GETINC(arg->i), n);
+	}
+	else if (arg->i < 0) {
+		for(i = 0, c = selmon->clients; c; i += ISVISIBLE(c) ? 1 : 0, c = c->next);
+		return MAX(i + arg->i, 0);
+	}
+	else
+		return arg->i;
+}

patch/stacker.h

@@ -0,0 +1,10 @@
+#define GETINC(X)               ((X) - 2000)
+#define INC(X)                  ((X) + 2000)
+#define ISINC(X)                ((X) > 1000 && (X) < 3000)
+#define PREVSEL                 3000
+#define MOD(N,M)                ((N)%(M) < 0 ? (N)%(M) + (M) : (N)%(M))
+#define TRUNC(X,A,B)            (MAX((A), MIN((X), (B))))
+
+static void focusstack(const Arg *arg);
+static void pushstack(const Arg *arg);
+static int stackpos(const Arg *arg);