From af18a141ed96a73d22547ca7f3455091b8ce8dca Mon Sep 17 00:00:00 2001
From: Donald Burr <dburr@borg-cube.com>
Date: Thu, 19 Feb 2015 11:10:50 -0800
Subject: [PATCH] make sure you can't select a nonexistant screen

---
 acatcher/acatcher.cxx.template | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/acatcher/acatcher.cxx.template b/acatcher/acatcher.cxx.template
index 1ef312f..9b81877 100644
--- a/acatcher/acatcher.cxx.template
+++ b/acatcher/acatcher.cxx.template
@@ -371,7 +371,7 @@ int main(int argc, char *argv[])
 				if ((c >= 'A') && (c <= 'F')) {
 					cur_listener = c + 10 - 'A';
 				}
-				if (old_listener != cur_listener) {
+				if (old_listener != cur_listener && cur_listener <= MAX) {
 					cls();
 					cerr << "Now listening to " << names[cur_listener] << "\r\n";
 				}