#!/bin/bash

GLOB="global_var"

function say() {
	#_loc="${1:-hello}"
	_loc="hello"
	#_res="${_loc} ${GLOB}"

	echo "${_loc}" world
	#echo "${_res}" | cut -d" " -f1

	echo 'single quoted string ${_loc} &> must not be expanded' &>/dev/null
}
USELESS_VAR="useless value with ${GLOB}"
#USELESS_VAR="$(echo hello world)"
echo say world
say world