More coverage.

bin/varnishhist/varnishhist.c

@@ -434,7 +434,7 @@ do_curses(void *arg)
 		case '7':
 		case '8':
 		case '9':
-			ms_delay = 1U << (ch - '0');
+			ms_delay = 1000U << (ch - '0');
 			break;
 		case '+':
 			ms_delay /= 2;

bin/varnishtest/tests/u00009.vtc

@@ -26,6 +26,10 @@ process p1 -screen_dump
 
 process p1 -winsz 23 80
 
+delay 5
+
+process p1 -write {0>+-<}
+
 delay 1.5
 
 process p1 -expect-text 2 1 {20_}