fixed ask_yn maybe

spells/cantrips/ask_yn

@@ -1,34 +1,31 @@
-#!/bin/sh
+#!/bin/bash
 
-ask_yn() {
+question=$1
-    default=${2:-"y"}
+default_answer=$2
-    default=$(printf "%s" "$default" | tr '[:upper:]' '[:lower:]')
 
-    # Set prompt string
+# Capitalize the default answer and construct the prompt
-    case "$default" in
+if [[ $default_answer == "Y" ]]; then
-        y)  prompt="Y/n" ;;
+    prompt="${question} (Y/n)? "
-        n)  prompt="y/N" ;;
+else
-        *)  printf "Invalid default answer\n"; exit 1 ;;
+    prompt="${question} (y/N)? "
-    esac
+fi
+
+# Use stty to make read command work for single character input
+old_stty_cfg=$(stty -g)
+stty raw -echo
+printf "%s" "$prompt"
+answer=$( while ! head -c 1 | grep -i '[yn]'; do true; done )
+stty $old_stty_cfg
 
-    while true; do
+# If no answer is given, use the default answer
-        trap 'exit' INT
-        printf "%s (%s): " "$1" "$prompt"
-        read -r answer || exit
 if [ -z "$answer" ]; then
-            answer="$default"
+    answer=$default_answer
-            break
 fi
-        case "$answer" in
-            y|Y) answer="y"; break;;
-            n|N) answer="n"; break;;
-        esac
-    done
 
-    case "$answer" in
+# Print the answer and return appropriate exit code
-        y|Y) printf "1";;
+printf "%s\n" "$answer"
-        n|N) printf "0";;
+if [[ $answer == "Y" || $answer == "y" ]]; then
-    esac
+    exit 0
-}
+else
-
+    exit 1
-ask_yn "$@"
+fi