added some new convenience functions

client.c

@@ -9,13 +9,6 @@
 
 /* static */
 
-static void
-detachstack(Client *c) {
-	Client **tc;
-	for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
-	*tc = c->snext;
-}
-
 static void
 grabbuttons(Client *c, Bool focused) {
 	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
@@ -67,6 +60,20 @@ xerrordummy(Display *dsply, XErrorEvent *ee) {
 
 /* extern */
 
+void
+attach(Client *c) {
+	if(clients)
+		clients->prev = c;
+	c->next = clients;
+	clients = c;
+}
+
+void
+attachstack(Client *c) {
+	c->snext = stack;
+	stack = c;
+}
+
 void
 configure(Client *c) {
 	XConfigureEvent ce;
@@ -85,6 +92,24 @@ configure(Client *c) {
 	XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
 }
 
+void
+detach(Client *c) {
+	if(c->prev)
+		c->prev->next = c->next;
+	if(c->next)
+		c->next->prev = c->prev;
+	if(c == clients)
+		clients = c->next;
+	c->next = c->prev = NULL;
+}
+
+void
+detachstack(Client *c) {
+	Client **tc;
+	for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
+	*tc = c->snext;
+}
+
 void
 focus(Client *c) {
 	if(c && !isvisible(c))
@@ -95,8 +120,7 @@ focus(Client *c) {
 	}
 	if(c) {
 		detachstack(c);
-		c->snext = stack;
+		attachstack(c);
-		stack = c;
 		grabbuttons(c, True);
 	}
 	sel = c;
@@ -189,11 +213,8 @@ manage(Window w, XWindowAttributes *wa) {
 	settags(c, t);
 	if(!c->isfloat)
 		c->isfloat = (t != 0) || c->isfixed;
-	if(clients)
+	attach(c);
-		clients->prev = c;
+	attachstack(c);
-	c->next = clients;
-	c->snext = stack;
-	stack = clients = c;
 	c->isbanned = True;
 	XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 	XMapWindow(dpy, c->win);

dwm.h

@@ -99,7 +99,11 @@ extern Display *dpy;
 extern Window root, barwin;
 
 /* client.c */
+extern void attach(Client *c);			/* attaches c to global client list */
+extern void attachstack(Client *c);		/* attaches client to stack */
 extern void configure(Client *c);		/* send synthetic configure event */
+extern void detach(Client *c);			/* detaches c from global client list */
+extern void detachstack(Client *c);		/* detaches client from stack */
 extern void focus(Client *c);			/* focus c, c may be NULL */
 extern Client *getclient(Window w);		/* return client of w */
 extern Bool isprotodel(Client *c);		/* returns True if c->win supports wmatom[WMDelete] */
@@ -144,7 +148,6 @@ extern void eprint(const char *errstr, ...);	/* prints errstr and exits with 1 *
 extern void spawn(Arg *arg);			/* forks a new subprocess with to arg's cmd */
 
 /* view.c */
-extern void detach(Client *c);			/* detaches c from global client list */
 extern void dofloat(void);			/* arranges all windows floating */
 extern void focusnext(Arg *arg);		/* focuses next visible client, arg is ignored  */
 extern void focusprev(Arg *arg);		/* focuses previous visible client, arg is ignored */

tile.c

@@ -125,10 +125,7 @@ zoom(Arg *arg) {
 		if(!(c = nextmanaged(c->next)))
 			return;
 	detach(c);
-	if(clients)
+	attach(c);
-		clients->prev = c;
-	c->next = clients;
-	clients = c;
 	focus(c);
 	arrange();
 }

view.c

@@ -7,17 +7,6 @@
 
 void (*arrange)(void) = DEFMODE;
 
-void
-detach(Client *c) {
-	if(c->prev)
-		c->prev->next = c->next;
-	if(c->next)
-		c->next->prev = c->prev;
-	if(c == clients)
-		clients = c->next;
-	c->next = c->prev = NULL;
-}
-
 void
 dofloat(void) {
 	Client *c;