Added dwm restart option.

https://github.com/chneukirchen/dwm-chris2

config.def.h

@@ -106,6 +106,7 @@ static Key keys[] = {
 	TAGKEYS(                        XK_8,                      7)
 	TAGKEYS(                        XK_9,                      8)
 	{ MODKEY|ShiftMask,             XK_q,      quit,           {0} },
+	{ MODKEY,                       XK_r,      quit,           {.i = +1 } },
 };
 
 /* button definitions */

dwm.c

@@ -305,6 +305,7 @@ static void (*handler[LASTEvent]) (XEvent *) = {
 };
 static Atom wmatom[WMLast], netatom[NetLast], xatom[XLast];
 static Bool running = True;
+static Bool restart = False;
 static Cursor cursor[CurLast];
 static Display *dpy;
 static DC dc;
@@ -1745,6 +1746,8 @@ propertynotify(XEvent *e) {
 
 void
 quit(const Arg *arg) {
+	if(arg->i)
+		restart = True;
 	running = False;
 }
 
@@ -2809,6 +2812,8 @@ main(int argc, char *argv[]) {
 	setup();
 	scan();
 	run();
+	if(restart)
+		execvp(argv[0], argv);
 	cleanup();
 	XCloseDisplay(dpy);
 	return EXIT_SUCCESS;