def p_print_list_list2(p):
    p[0] = p[1] + [p[3]]
Thanks to how underlying client code works we already support multiple prefixes.
dataset/ETHPy150Open nucleic/enaml/enaml/core/parser.py/p_print_list_list2--crossover with--dataset/ETHPy150Open Shizmob/pydle/pydle/features/ircv3/ircv3_1.py/IRCv3_1Support.on_capability_multi_prefix_available