implement multi-tag selection through button3 click on the specific tag

event.c

@@ -108,7 +108,13 @@ buttonpress(XEvent *e)
 			for(a.i = 0; a.i < ntags; a.i++) {
 				x += textw(tags[a.i]);
 				if(ev->x < x) {
-					view(&a);
+					if(ev->button == Button3) {
+						tsel[a.i] = True;
+						arrange(NULL);
+						drawall();
+					}
+					else
+						view(&a);
 					return;
 				}
 			}