if err := outf.Close(); err != nil {
		return "", err
	}
	return epath, nil
}

type upexState struct {
	dentries   []fnInlHeur
	newgolines []string
	atline     map[uint]uint
}

func mkUpexState(dentries []fnInlHeur) *upexState {
	atline := make(map[uint]uint)
	for _, e := range dentries {
		atline[e.line] = atline[e.line] + 1
	}
	return &upexState{
		dentries: dentries,
		atline:   atline,
	}