fixed ask_yn again

spells/cantrips/ask_yn

@@ -5,17 +5,18 @@
 
 ask_yn() {
     default=${2:-"y"}
-    default=$(echo "$default" | tr '[:upper:]' '[:lower:]')
+    default=$(printf "%s" "$default" | tr '[:upper:]' '[:lower:]')
     
     # Set prompt string
     case "$default" in
         y)  prompt="Y/n" ;;
         n)  prompt="y/N" ;;
-        *)  echo "Invalid default answer"; exit 1 ;;
+        *)  printf "Invalid default answer\n"; exit 1 ;;
     esac
     
     while true; do
-        echo -n "$1 ($prompt): "
+        trap 'stty sane; exit' INT
+        printf "%s (%s): " "$1" "$prompt"
         stty raw -echo
         answer=$(head -c 1) || exit
         stty -echo
@@ -28,9 +29,7 @@ ask_yn() {
     done
     
     case "$answer" in
-        y|Y) echo 1;;
-        n|N) echo 0;;
+        y|Y) printf "1";;
+        n|N) printf "0";;
     esac
-}
-
-ask_yn "$@"
+}