Print arguments on sepearate lines

args_to_lines.sh

#!/usr/bin/env bash

f() {
	local -a args=("${@}") valid_args=()
	local -i i=0 len=${#args[@]}
	for (( ; i < len; i++ )); do
		if [[ "${args[i]}" != '' ]] ; then
			valid_args+=("${args[i]}")
		else
			echo "Removed empty string [$((i+1))]" 1>&2
		fi
	done
	if (( ${#valid_args[@]} > 0 )) ; then
		local IFS=$'\n'
		echo "${valid_args[*]}"
	fi
	return $?
}
f "${@}"
exit $?