--- a/dwm.c	2011-05-02 17:07:20.537676024 +0100
+++ b/dwm.c	2011-05-04 21:44:36.799998819 +0100
@@ -129,6 +129,8 @@
 	unsigned int tags;
 	Bool isfloating, centre;
 	int monitor;
+	void (*f)(Client *, const Arg *);
+	const Arg farg;
 } Rule;

 /* function declarations */
@@ -295,6 +297,7 @@
 #include "patches/grid.c"
 #include "patches/spawnq.c"
 #include "patches/shiftview.c"
+#include "patches/rule.c"

 /* function implementations */
 void
@@ -324,6 +327,8 @@
 					c->mon = m;
 				if(!r->centre)
 					centre = 0;
+				if(r->f)
+					r->f(c, &r->farg);
 			}
 		}
 		if(ch.res_class)