Add the version 8 things.

8/st-visualbell-0.8.1.diff

@@ -0,0 +1,41 @@
+diff --git a/x.c b/x.c
+index c343ba2..26bb9bb 100644
+--- a/x.c
++++ b/x.c
+@@ -239,6 +239,7 @@ static char *opt_name  = NULL;
+ static char *opt_title = NULL;
+ 
+ static int oldbutton = 3; /* button event on startup: 3 = release */
++static int bellon = 0;    /* visual bell status */
+ 
+ void
+ clipcopy(const Arg *dummy)
+@@ -1614,6 +1615,15 @@ xbell(void)
+ 		xseturgency(1);
+ 	if (bellvolume)
+ 		XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
++
++	/* visual bell*/
++	if (!bellon) {
++		bellon = 1;
++		MODBIT(win.mode, !IS_SET(MODE_REVERSE), MODE_REVERSE);
++		redraw();
++		XFlush(xw.dpy);
++		MODBIT(win.mode, !IS_SET(MODE_REVERSE), MODE_REVERSE);
++	}
+ }
+ 
+ void
+@@ -1840,7 +1850,11 @@ run(void)
+ 					(handler[ev.type])(&ev);
+ 			}
+ 
+-			draw();
++			if (bellon) {
++				bellon = 0;
++				redraw();
++			}
++			else draw();
+ 			XFlush(xw.dpy);
+ 
+ 			if (xev && !FD_ISSET(xfd, &rfd))