// Sometimes, send an angel or daeva instead.

    monster_type demon = MONS_PROGRAM_BUG;
    // Sometimes, send a holy being instead.

        return (coinflip() ? MONS_ANGEL : MONS_DAEVA);
    const monster_type demontype =
        summon_any_demon(

        demon = summon_any_holy_being();
    else
        demon = summon_any_demon(

    return (demontype);

    return (demon);

monster_type summon_any_holy_being();

monster_type summon_any_holy_being()
{
    return (coinflip()) ? MONS_ANGEL : MONS_DAEVA;
}