Refactoring restack to allow it to work without having the bar as a reference ref. #214

dwm.c

@@ -3000,7 +3000,7 @@ resizemouse(const Arg *arg)
 void
 restack(Monitor *m)
 {
-	Client *c;
+	Client *c, *f = NULL;
 	XEvent ev;
 	XWindowChanges wc;
 	#if WARP_PATCH && FLEXTILE_DELUXE_LAYOUT
@@ -3015,11 +3015,17 @@ restack(Monitor *m)
 		return;
 	if (m->sel->isfloating || !m->lt[m->sellt]->arrange)
 		XRaiseWindow(dpy, m->sel->win);
-	if (m->lt[m->sellt]->arrange && m->bar) {
+	if (m->lt[m->sellt]->arrange) {
 		wc.stack_mode = Below;
-		wc.sibling = m->bar->win;
+		if (m->bar) {
+			wc.sibling = m->bar->win;
+		} else {
+			for (f = m->stack; f && (f->isfloating || !ISVISIBLE(f)); f = f->snext); // find first tiled stack client
+			if (f)
+				wc.sibling = f->win;
+		}
 		for (c = m->stack; c; c = c->snext)
-			if (!c->isfloating && ISVISIBLE(c)) {
+			if (!c->isfloating && ISVISIBLE(c) && c != f) {
 				XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
 				wc.sibling = c->win;
 			}