# from dan douglas
expassign()
{
	typeset -a a
	a=("$@")
	typeset var asn

	while IFS= read -r asn; do
		IFS=: command eval "$asn"
		printf '%-14s... %s\n' "$asn" "$var"
	done <<\EOF
var=${a[*]}
var="${a[*]}"
var=$*
var="$*"
var=${a[@]}
var="${a[@]}"
var=$@
var="$@"
EOF
}

expassign one:::two three:::four