--- dwm.c.orig	2010-06-19 13:39:11.764762684 +0200
+++ dwm.c	2010-06-20 09:11:44.512261070 +0200
@@ -58,7 +58,7 @@
 enum { CurNormal, CurResize, CurMove, CurLast };        /* cursor */
 enum { ColBorder, ColFG, ColBG, ColLast };              /* color */
 enum { NetSupported, NetWMName, NetWMState,
-       NetWMFullscreen, NetLast };                      /* EWMH atoms */
+       NetWMFullscreen, NetWMDemandsAttention, NetLast }; /* EWMH atoms */
 enum { WMProtocols, WMDelete, WMState, WMLast };        /* default atoms */
 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
        ClkClientWin, ClkRootWin, ClkLast };             /* clicks */
@@ -1302,13 +1302,24 @@ void
 clientmessage(XEvent *e) {
 	XClientMessageEvent *cme = &e->xclient;
 
-	if(cme->message_type == netatom[NetWMState] && cme->data.l[1] == netatom[NetWMFullscreen]) {
-		if(cme->data.l[0])
-			XChangeProperty(dpy, cme->window, netatom[NetWMState], XA_ATOM, 32,
+	if(cme->message_type == netatom[NetWMState]) {
+		Bool set = (cme->data.l[0] != 0) ? True : False;
+		if (cme->data.l[1] == netatom[NetWMFullscreen]) {
+			if (set)
+				XChangeProperty(dpy, cme->window, netatom[NetWMState], XA_ATOM, 32,
 			                PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
-		else
-			XChangeProperty(dpy, cme->window, netatom[NetWMState], XA_ATOM, 32,
+			else
+				XChangeProperty(dpy, cme->window, netatom[NetWMState], XA_ATOM, 32,
 			                PropModeReplace, (unsigned char*)0, 0);
+		}
+		if (cme->data.l[1] == netatom[NetWMDemandsAttention]) {
+			Client *c = wintoclient(cme->window);
+			if (!c)
+				return;
+
+			c->isurgent = set;
+			drawbars();
+		}
 	}
 }
 
@@ -1517,6 +1528,7 @@ setup(void) {
 	netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
 	netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
 	netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
+	netatom[NetWMDemandsAttention] = XInternAtom(dpy, "_NET_WM_STATE_DEMANDS_ATTENTION", False);
 	/* init cursors */
 	cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
 	cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);