def p_listmaker2(p):
    """listmaker2 : "," maybe_nline expression
                  | listmaker2 "," maybe_nline expression
                  |             """
    if len(p) == 4:
        p[0] = [p[3]]
    elif len(p) < 2:
        p[0] = []
    else:
        p[0] = p[1] + [p[4]]
