10 

    11 void

    12 attach(Client *c)

    13 {

    14 	Client *first = getnext(clients);

    15 

    16 	if(!first) {

    17 		if(clients) {

    18 			for(first = clients; first->next; first = first->next);

    19 			first->next = c;

    20 			c->prev = first;

    21 		}

    22 		else

    23 			clients = c;

    24 	}

    25 	else if(first == clients) {

    26 		c->next = clients;

    27 		clients->prev = c;

    28 		clients = c;

    29 	}

    30 	else {

    31 		first->prev->next = c;

    32 		c->prev = first->prev;

    33 		first->prev = c;

    34 		c->next = first;

    35 	}

    36 }

    37 

    38 void

    39 detach(Client *c)

    40 {

    41 	if(c->prev)

    42 		c->prev->next = c->next;

    43 	if(c->next)

    44 		c->next->prev = c->prev;

    45 	if(c == clients)

    46 		clients = c->next;

    47 	c->next = c->prev = NULL;

    48 }