here

#!/bin/bash

herestring() {
	local lines lead start cur end
	mapfile -t lines < <(echo "$1")

	while [[ $start -lt ${#lines[@]} ]] && [[ ${lines[$start]} =~ ^[[:space:]]*$ ]]; do
		((start++))
	done
	end=$((${#lines[@]} - 1))
	while [[ $end -gt 0 ]] && [[ ${lines[$end]} =~ ^[[:space:]]*$ ]]; do
		((end--))
	done

	if [[ ${lines[$start]} =~ ^([[:space:]]+) ]]; then
		lead=${BASH_REMATCH[1]}
	fi
	for ((cur = start; cur <= end; cur++)); do
		echo "${lines[$cur]/$lead/}"
	done
}

herestring '
	foo

			bar
			baz
				quux
'


unexpand <<-EOF
	# encoding: utf-8

	preload_app true

	before_fork do |server, worker|
	        Signal.trap 'TERM' do
	        puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
	        Process.kill 'QUIT', Process.pid
	end
EOF