searching for a better way to discard enter notifies

client.c

@@ -28,17 +28,19 @@ next(Client *c)
 void
 zoom(Arg *arg)
 {
-	Client **l, *old;
+	Client **l;
 
-	if(!(old = sel))
+	if(!sel)
 		return;
 
+	if(sel == next(clients)) 
+		sel = next(sel->next);
+
 	for(l = &clients; *l && *l != sel; l = &(*l)->next);
 	*l = sel->next;
 
-	old->next = clients; /* pop */
-	clients = old;
-	sel = old;
+	sel->next = clients; /* pop */
+	clients = sel;
 	arrange(NULL);
 	focus(sel);
 }
@@ -54,7 +56,6 @@ max(Arg *arg)
 	sel->h = sh - 2 * sel->border - bh;
 	craise(sel);
 	resize(sel, False);
-	discard_events(EnterWindowMask);
 }
 
 void
@@ -65,9 +66,6 @@ view(Arg *arg)
 	tsel = arg->i;
 	arrange(NULL);
 
-	if((c = next(clients)))
-		focus(c);
-
 	for(c = clients; c; c = next(c->next))
 		draw_client(c);
 	draw_bar();
@@ -120,7 +118,6 @@ floating(Arg *arg)
 			focus(sel);
 		}
 	}
-	discard_events(EnterWindowMask);
 }
 
 void
@@ -171,13 +168,12 @@ tiling(Arg *arg)
 		else
 			ban_client(c);
 	}
-	if(sel && !sel->tags[tsel]) {
+	if(!sel || (sel && !sel->tags[tsel])) {
 		if((sel = next(clients))) {
 			craise(sel);
 			focus(sel);
 		}
 	}
-	discard_events(EnterWindowMask);
 }
 
 void
@@ -323,14 +319,16 @@ void
 focus(Client *c)
 {
 	Client *old = sel;
+	XEvent ev;
 
+	XFlush(dpy);
 	sel = c;
 	if(old && old != c)
 		draw_client(old);
 	draw_client(c);
 	XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 	XFlush(dpy);
-	discard_events(EnterWindowMask);
+	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 }
 
 static void

dwm.h

@@ -137,9 +137,6 @@ extern unsigned int textnw(char *text, unsigned int len);
 extern unsigned int textw(char *text);
 extern unsigned int texth(void);
 
-/* event.c */
-extern void discard_events(long even_mask);
-
 /* dev.c */
 extern void update_keys(void);
 extern void keypress(XEvent *e);
@@ -155,8 +152,5 @@ extern void quit(Arg *arg);
 /* util.c */
 extern void error(const char *errstr, ...);
 extern void *emallocz(unsigned int size);
-extern void *emalloc(unsigned int size);
-extern void *erealloc(void *ptr, unsigned int size);
-extern char *estrdup(const char *str);
 extern void spawn(Arg *arg);
 extern void swap(void **p1, void **p2);

event.c

@@ -4,6 +4,7 @@
  */
 
 #include <fcntl.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <X11/keysym.h>
@@ -37,13 +38,6 @@ void (*handler[LASTEvent]) (XEvent *) = {
 	[UnmapNotify] = unmapnotify
 };
 
-void
-discard_events(long even_mask)
-{
-	XEvent ev;
-	while(XCheckMaskEvent(dpy, even_mask, &ev));
-}
-
 static void
 buttonpress(XEvent *e)
 {

util.c

@@ -6,7 +6,6 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
@@ -39,33 +38,6 @@ emallocz(unsigned int size)
 	return res;
 }
 
-void *
-emalloc(unsigned int size)
-{
-	void *res = malloc(size);
-	if(!res)
-		bad_malloc(size);
-	return res;
-}
-
-void *
-erealloc(void *ptr, unsigned int size)
-{
-	void *res = realloc(ptr, size);
-	if(!res)
-		bad_malloc(size);
-	return res;
-}
-
-char *
-estrdup(const char *str)
-{
-	char *res = strdup(str);
-	if(!res)
-		bad_malloc(strlen(str));
-	return res;
-}
-
 void
 swap(void **p1, void **p2)
 {