Function billable

src/shk.c:3447–3487

}

RESTORE_WARNING_FORMAT_NONLITERAL

/* decide whether a shopkeeper thinks an item belongs to her */
boolean
billable(
    struct monst **shkpp, /* in: non-null if shk has been validated;
                           * out: shk */
    struct obj *obj,
    char roomno,
    boolean reset_nocharge)
{
    struct monst *shkp = *shkpp;

    /* if caller hasn't supplied a shopkeeper, look one up now */
    if (!shkp) {
        if (!roomno)
            return FALSE;
        shkp = shop_keeper(roomno);
        if (!shkp || !inhishop(shkp))
            return FALSE;
        *shkpp = shkp;
    }
    /* perhaps we threw it away earlier */
    if (onbill(obj, shkp, FALSE)
        || (obj->oclass == FOOD_CLASS && obj->oeaten))
        return FALSE;
    /* outer container might be marked no_charge but still have contents
       which should be charged for; clear no_charge when picking things up */
    if (obj->no_charge) {
        if (!Has_contents(obj) || (contained_gold(obj, TRUE) == 0L
                                   && contained_cost(obj, shkp, 0L, FALSE,
                                                     !reset_nocharge) == 0L))
            shkp = 0; /* not billable */
        if (reset_nocharge && !shkp && obj->oclass != COIN_CLASS) {
            obj->no_charge = 0;
            if (Has_contents(obj))
                picked_container(obj); /* clear no_charge */
        }
    }
    return shkp ? TRUE : FALSE;
}

void
addtobill(