dwm-tag0-focus.patch

--- a/dwm.c     2011-12-19 16:02:46.000000000 +0100
+++ b/dwm.c     2012-09-05 14:28:36.379761297 +0200
@@ -424,6 +424,15 @@
 }

 void
+attach2stack(Client *c) {
+       Client *t;
+
+       for(t = c->mon->stack; t->snext; t = t->snext);
+       t->snext = c;
+       c->snext = NULL;
+}
+
+void
 buttonpress(XEvent *e) {
        unsigned int i, x, click;
        Arg arg = {0};
@@ -853,7 +862,10 @@
                if(c->isurgent)
                        clearurgent(c);
                detachstack(c);
-               attachstack(c);
+               if(c->tags != TAGMASK)
+                       attachstack(c);
+               else
+                       attach2stack(c);
                grabbuttons(c, True);
                XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
                setfocus(c);