#!/bin/bash

# Script from
# http://www.unixboard.de/vb3/showthread.php?36246-getopts-ordentliche-Parameternamen&p=285798&viewfull=1#post285798
# Optimized:
# - $restargs works now (+ unquoted)
# Still not working:
# - Optional arguments (::) don't work with long options. For short options, no whitespace is allowed

optarr=( $(getopt --options 'ab:c::' --long 'a-long,b-long:,c-long::' --unquoted -- "$@") )

i=0
while true; do
    case ${optarr[$i]} in
        -a|--a-long) echo "Option a" ; ((i++));;
        -b|--b-long) echo "Option b, argument ${optarr[$((i+1))]}";((i=i+2));;
        -c|--c-long)
                    # c has an optional argument. As we are in quoted mode,
                    # an empty parameter will be generated if its optional
                    # argument is not found.
                    case "${optarr[$((i+1))]}" in
                            "''") echo "Option c, no argument"; ((i=i+2));;
                            *)  echo "Option c, argument is ${optarr[$((i+1))]}"; ((i=i+2));;
                    esac;;
        --) ((i++)); break;;
        *) echo "Internal Error!" >&2; exit 1;;
        esac
done

restargs=${optarr[@]:i};

echo "Restargs:" $restargs;