#! /bin/bash --
[ ! -z "${GREZZO_1577142105}" ] && return; GREZZO_1577142105=0

function feat_missing() {
	! command -v "$1" 2>&1 >/dev/null
}

function feat_needed() {
	FEAT="$1"
	if feat_missing "$FEAT"; then
		eval "feat_add_$FEAT"
	fi
}