test/countineyn terminal and error code

test/bin/continueyn

@@ -2,9 +2,12 @@
 # Author: Juan Batiz-Benet <juan@benet.ai>
 # MIT LICENSED
 
+# if not a terminal, exit 0 (yes!)
+test -t 1 || exit 0
+
 read -p "continue? [y/N] "
 echo
-if [[ $REPLY =~ ^[Yy]$ ]]; then
+if [[ $REPLY =~ ^[Yy] ]]; then
     exit 0
 fi
-exit -1
+exit 1