removed shiftview(), if you scroll the views in the tag area, you can also use Button1 instead

removed focusclient([-]1) bound to scroll wheel - if you slightly move the mouse you will focus the first client anways which is in the way

dwm.h

@@ -144,7 +144,6 @@ 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 */
-void shiftview(const char *arg);        /* views next(1)/previous(-1) tag */
 
 /* util.c */
 void *emallocz(unsigned int size);	/* allocates zero-initialized memory, exits on error */

event.c

@@ -16,7 +16,7 @@ typedef struct {
 
 KEYS
 
-#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
+#define CLEANMASK(mask)		(mask & ~(numlockmask | LockMask))
 #define MOUSEMASK		(BUTTONMASK | PointerMotionMask)
 
 static Client *
@@ -135,19 +135,11 @@ buttonpress(XEvent *e) {
 					else
 						toggleview(buf);
 				}
-				else if(ev->button == Button4)
-					shiftview("-1");
-				else if(ev->button == Button5)
-					shiftview("1");
 				return;
 			}
 		}
-		if(ev->x < x + blw && ev->button == Button1)
+		if((ev->x < x + blw) && ev->button == Button1)
 			setlayout(NULL);
-		else if(ev->button == Button4)
-			focusclient("-1");
-		else if(ev->button == Button5)
-			focusclient("1");
 	}
 	else if((c = getclient(ev->window))) {
 		focus(c);

tag.c

@@ -99,24 +99,6 @@ settags(Client *c, Client *trans) {
 			c->tags[i] = seltag[i];
 }
 
-void 
-shiftview(const char *arg) {
-	int i, j;
-
-	for(i = 0; !seltag[i]; i++);
-	for(j = i + 1; j < ntags && !seltag[j]; j++);
-	if(j < ntags)
-		return; /* more than one tag selected */
-	seltag[i] = False;
-	i += arg ? atoi(arg) : 0;
-	if(i < 0)
-		i = ntags - 1;
-	else if(i >= ntags)
-		i = 0;
-	seltag[i] = True;
-	lt->arrange();
-}
-
 void
 tag(const char *arg) {
 	int i;