applied dfenze cleanups, fixed some comments in dwm.h

client.c

@@ -152,6 +152,14 @@ focus(Client *c) {
 		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 }
 
+void
+focustopvisible(void) {
+	Client *c;
+
+	for(c = stack; c && !isvisible(c); c = c->snext);
+	focus(c);
+}
+
 void
 killclient(const char *arg) {
 	XEvent ev;
@@ -391,10 +399,8 @@ unmanage(Client *c) {
 	XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
 	detach(c);
 	detachstack(c);
-	if(sel == c) {
-		for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
-		focus(nc);
-	}
+	if(sel == c)
+		focustopvisible();
 	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 	setclientstate(c, WithdrawnState);
 	free(c->tags);

dwm.h

@@ -100,11 +100,12 @@ void attach(Client *c);			/* attaches c to global client list */
 void configure(Client *c);		/* send synthetic configure event */
 void detach(Client *c);			/* detaches c from global client list */
 void focus(Client *c);			/* focus c, c may be NULL */
-void killclient(const char *arg);		/* kill c nicely */
+void focustopvisible(void);	    /* focus top visible window on stack */
+void killclient(const char *arg);		/* kill sel  nicely */
 void manage(Window w, XWindowAttributes *wa);	/* manage new client */
 void resize(Client *c, int x, int y,
 		int w, int h, Bool sizehints);	/* resize with given coordinates c*/
-void togglefloating(const char *arg);	/* toggles focused client between floating/tiled state */
+void togglefloating(const char *arg);	/* toggles sel between floating/tiled state */
 void updatesizehints(Client *c);		/* update the size hint variables of c */
 void updatetitle(Client *c);		/* update the name of c */
 void unmanage(Client *c);		/* destroy c */
@@ -137,8 +138,8 @@ int xerror(Display *dsply, XErrorEvent *ee);	/* dwm's X error handler */
 void compileregs(void);			/* initialize regexps of rules defined in config.h */
 Bool isvisible(Client *c);		/* returns True if client is visible */
 void settags(Client *c, Client *trans);	/* sets tags of c */
-void tag(const char *arg);		/* tags c with arg's index */
-void toggletag(const char *arg);		/* toggles c tags with arg's index */
+void tag(const char *arg);		/* tags sel with arg's index */
+void toggletag(const char *arg);		/* toggles sel tags with arg's index */
 void toggleview(const char *arg);	/* toggles the tag with arg's index (in)visible */
 void view(const char *arg);		/* views the tag with arg's index */
 

event.c

@@ -247,8 +247,7 @@ enternotify(XEvent *e) {
 		focus(c);
 	else if(ev->window == root) {
 		selscreen = True;
-		for(c = stack; c && !isvisible(c); c = c->snext);
-		focus(c);
+		focustopvisible();
 	}
 }
 

layout.c

@@ -61,10 +61,8 @@ tile(void) {
 			c->isbanned = True;
 			XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 		}
-	if(!sel || !isvisible(sel)) {
-		for(c = stack; c && !isvisible(c); c = c->snext);
-		focus(c);
-	}
+	if(!sel || !isvisible(sel)) 
+		focustopvisible();
 	restack();
 }
 
@@ -88,10 +86,8 @@ floating(void) {
 			XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 		}
 	}
-	if(!sel || !isvisible(sel)) {
-		for(c = stack; c && !isvisible(c); c = c->snext);
-		focus(c);
-	}
+	if(!sel || !isvisible(sel))
+		focustopvisible();
 	restack();
 }
 
@@ -241,13 +237,10 @@ togglemax(const char *arg) {
 
 void
 zoom(const char *arg) {
-	unsigned int n;
 	Client *c;
 
 	if(!sel || lt->arrange != tile || sel->isfloating)
 		return;
-	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
-		n++;
 	if((c = sel) == nexttiled(clients))
 		if(!(c = nexttiled(c->next)))
 			return;