Function is_inuse

src/invent.c:2166–2170

is 'obj' being used by the hero? worn, wielded, active lamp or leash; not to be confused with obj->in_use, which finishes using up an item (destroys it) if restoring a save file finds that bit set */

   not to be confused with obj->in_use, which finishes using up an item
   (destroys it) if restoring a save file finds that bit set */
boolean
is_inuse(struct obj *obj)
{
    return (carried(obj) && (is_worn(obj) || tool_being_used(obj)));
}

/* extra xprname() input that askchain() can't pass through safe_qbuf() */
static struct xprnctx {