made stdin reader more robust

client.c

@@ -404,8 +404,6 @@ manage(Window w, XWindowAttributes *wa)
 	c->next = *l; /* *l == nil */
 	*l = c;
 
-	XMapRaised(dpy, c->win);
-	XMapRaised(dpy, c->title);
 	XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
 			GrabModeAsync, GrabModeSync, None, None);
 	XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
@@ -418,10 +416,17 @@ manage(Window w, XWindowAttributes *wa)
 			|| ((c->maxw == c->minw) && (c->maxh == c->minh));
 
 	arrange(NULL);
-	if(c->tags[tsel])
+	/* mapping the window now prevents flicker */
+	if(c->tags[tsel]) {
+		XMapRaised(dpy, c->win);
+		XMapRaised(dpy, c->title);
 		focus(c);
-	else
+	}
+	else {
 		ban_client(c);
+		XMapRaised(dpy, c->win);
+		XMapRaised(dpy, c->title);
+	}
 }
 
 void

main.c

@@ -264,6 +264,10 @@ main(int argc, char *argv[])
 	XDefineCursor(dpy, barwin, cursor[CurNormal]);
 	XMapRaised(dpy, barwin);
 
+	dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
+	dc.gc = XCreateGC(dpy, root, 0, 0);
+	draw_bar();
+
 	issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
 
 	wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
@@ -272,15 +276,12 @@ main(int argc, char *argv[])
 
 	XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
 
-	dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
-	dc.gc = XCreateGC(dpy, root, 0, 0);
-
 	strcpy(stext, "dwm-"VERSION);
 	scan_wins();
-	draw_bar();
 
 	/* main event loop, reads status text from stdin as well */
 	while(running) {
+Mainloop:
 		FD_ZERO(&rd);
 		FD_SET(0, &rd);
 		FD_SET(ConnectionNumber(dpy), &rd);
@@ -298,8 +299,15 @@ main(int argc, char *argv[])
 			}
 			if(FD_ISSET(0, &rd)) {
 				i = n = 0;
-				while((i = getchar()) != '\n' && n < sizeof(stext) - 1)
+				for(;;) {
+					if((i = getchar()) == EOF) {
+						stext[0] = 0;
+						goto Mainloop;
+					}
+					if(i == '\n' || n >= sizeof(stext) - 1)
+						break;
 					stext[n++] = i;
+				}
 				stext[n] = 0;
 				draw_bar();
 			}