for arg
do
case "$arg" in
- --help) printf '%s\n' "$usage" ; exit;;
- --version) printf '%s\n' "$version"; exit;;
+ --help) printf '%s\n' "$usage" || exit 1; exit;;
+ --version) printf '%s\n' "$version" || exit 1; exit;;
-*) opt="$opt $arg"; shift;;
*) break;;
esac