getopt long and short

#!/bin/bash


LONG_OPTIONS="long:,short:"
LONG_PARAMETERS="^(long|longer|longest)$"
LONG=default_long


SHORT_OPTIONS="l:s:"
SHORT_PARAMETERS="^(short|shorter|shortest)$"
SHORT=default_short

options=$(getopt --longoptions "$LONG_OPTIONS" --options "$SHORT_OPTIONS" -- "$@")

[ $? -eq 0 ] || {
       echo "Invalid options provided: " 
       exit 1
}

#echo $options

eval set -- "$options"

while true; do
    case "$1" in
    -l|--long)
        LONG=$2
        [[ ! $LONG =~ $LONG_PARAMETERS ]] && {
            echo "Incorrect parameter provided for $1: $2"
            exit 1
        }
        shift; 
        ;;
    -s|--short)        
        SHORT=$2
        [[ ! $SHORT =~ $SHORT_PARAMETERS ]] && {
            echo "Incorrect parameter provided for $1: $2"
            exit 1
        }
        shift;
        ;;
    --)
        shift
        break
        ;;
    esac
    shift
done

echo $LONG , $SHORT

exit 0;