applied Sanders focus_* patches, removed the unnecessary clean-prefix from the new function names

client.c

@@ -10,6 +10,19 @@
 
 /* static functions */
 
+static void
+grabbutton(Client *c, unsigned int button, unsigned int modifier)
+{
+	XGrabButton(dpy, button, modifier, c->win, False, BUTTONMASK,
+			GrabModeAsync, GrabModeSync, None, None);
+	XGrabButton(dpy, button, modifier | LockMask, c->win, False, BUTTONMASK,
+			GrabModeAsync, GrabModeSync, None, None);
+	XGrabButton(dpy, button, modifier | numlockmask, c->win, False, BUTTONMASK,
+			GrabModeAsync, GrabModeSync, None, None);
+	XGrabButton(dpy, button, modifier | numlockmask | LockMask, c->win, False, BUTTONMASK,
+			GrabModeAsync, GrabModeSync, None, None);
+}
+
 static void
 resizetitle(Client *c)
 {
@@ -31,6 +44,15 @@ resizetitle(Client *c)
 
 }
 
+static void
+ungrabbutton(Client *c, unsigned int button, unsigned int modifier)
+{
+	XUngrabButton(dpy, button, modifier, c->win);
+	XUngrabButton(dpy, button, modifier | LockMask, c->win);
+	XUngrabButton(dpy, button, modifier | numlockmask, c->win);
+	XUngrabButton(dpy, button, modifier | numlockmask | LockMask, c->win);
+}
+
 static int
 xerrordummy(Display *dsply, XErrorEvent *ee)
 {
@@ -53,11 +75,14 @@ focus(Client *c)
 
 	if (!issel)
 		return;
-	if(sel && sel->ismax)
+	if(sel && sel->ismax && sel != c)
 		togglemax(NULL);
 	sel = c;
-	if(old && old != c)
+	if(old && old != c) {
+		grabbutton(old, AnyButton, 0);
 		drawtitle(old);
+	}
+	ungrabbutton(c, AnyButton, 0);
 	drawtitle(c);
 	XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 }
@@ -230,32 +255,9 @@ manage(Window w, XWindowAttributes *wa)
 	c->next = clients;
 	clients = c;
 
-	XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
-			GrabModeAsync, GrabModeSync, None, None);
-	XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
-			GrabModeAsync, GrabModeSync, None, None);
-	XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
-			GrabModeAsync, GrabModeSync, None, None);
-	XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
-			GrabModeAsync, GrabModeSync, None, None);
-
-	XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
-			GrabModeAsync, GrabModeSync, None, None);
-	XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
-			GrabModeAsync, GrabModeSync, None, None);
-	XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
-			GrabModeAsync, GrabModeSync, None, None);
-	XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
-			GrabModeAsync, GrabModeSync, None, None);
-
-	XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
-			GrabModeAsync, GrabModeSync, None, None);
-	XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
-			GrabModeAsync, GrabModeSync, None, None);
-	XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
-			GrabModeAsync, GrabModeSync, None, None);
-	XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
-			GrabModeAsync, GrabModeSync, None, None);
+	grabbutton(c, Button1, MODKEY);
+	grabbutton(c, Button2, MODKEY);
+	grabbutton(c, Button3, MODKEY);
 
 	settags(c);
 	if(!c->isfloat)

event.c

@@ -119,6 +119,8 @@ buttonpress(XEvent *e)
 	}
 	else if((c = getclient(ev->window))) {
 		focus(c);
+		if(CLEANMASK(ev->state) == 0)
+			return;
 		switch(ev->button) {
 		default:
 			break;