At least shellcheck is happy?

install.sh

@@ -18,12 +18,11 @@ cd recalbox-savesync || {
 	exit 1
 }
 
-re="'^[yY][eE]?[sS]?$'"
-result=0
-while [ "$result" -ne 1 ]; do
-	read -rp "\nWhat's your rclone prefix? : " prefix
+while true
+do
+	read -rp "What's your rclone prefix? : " prefix
 	read -rp "Is $prefix okay? [y/N]: " ans
-	result=$(grep -E -c "$re" "$ans")
+	if [[ "$ans" =~ ^[yY][eE]?[sS]?$ ]]; then break; fi
 done
 
 touch /tmp/savesync