sh_shellcheck() {
	local root="${1}"
	local file module modules path
	file="$(mktemp)"
	modules="$(sh_find_sh "${root}")"
	_sh_ifs_new
	for module in ${modules}; do
		path="${root}/${module}"
		shfmt --diff "${path}"
		echo ". \"${path}\"" >>"${file}"
	done
	_sh_ifs_pop
	shellcheck \
		--check-sourced \
		--enable "all" \
		--exclude "3043" \
		--external-sources \
		--shell "dash" \
		"${file}"
	rm "${file}"
}