// Repel undead is a holy aura, to which undead and demonic
    // creatures are sensitive.  Note that even though demons aren't
    // affected by repel undead, they do sense this type of divine aura.
    // -- bwr
    if (you.duration[DUR_REPEL_UNDEAD] && mons_is_unholy(monster))
        return (true);

    case DUR_REPEL_UNDEAD:
        return 4;

    _output_expiring_message(DUR_REPEL_UNDEAD,
                            "You have a holy aura protecting you from undead.");

int player::holy_aura() const
{
    return (duration[DUR_REPEL_UNDEAD] ? piety : 0);
}

    if (you.duration[DUR_REPEL_UNDEAD])
    {
        int colour = _dur_colour( LIGHTGREY, dur_expiring(DUR_REPEL_UNDEAD) );
        out.push_back(status_light(colour, "Holy"));
    }

    if (you.duration[DUR_REPEL_UNDEAD])
    {
        status.push_back(_get_expiration_string(DUR_REPEL_UNDEAD,
                                                "repel undead"));
    }

int monsters::holy_aura() const
{
    return (mons_is_holy(this) ? hit_dice : 0);
}

    }
    virtual int holy_aura() const
    {
        return (0);

    int holy_aura() const;

    int holy_aura() const;

    DUR_REPEL_UNDEAD,

//  Perhaps we should write functions like: update_repel_undead(),
//  update_liquid_flames(), and so on. Even better, we could have a
//  vector of callback functions (or objects) which get installed
//  at some point.

//  Perhaps we should write functions like: update_liquid_flames(), etc.
//  Even better, we could have a vector of callback functions (or
//  objects) which get installed at some point.

    _decrement_a_duration(DUR_REPEL_UNDEAD,
                          "Your holy aura fades away.", random2(3),
                          "Your holy aura is starting to fade.");