>LOOK
69 Mandalay
You're standing on a well-kept sidewalk to the east of your new house. The
street bears north and south. There's an overgrown alleyway to the east.
There's a mailbox here.
>RING DOORBELL
You don't see any doorbell here.
>RING
When you push the doorbell you hear an earsplitting clatter of bells, buzzers
and gongs that shakes the mansion to its foundation.
Nothing happens for a moment. Then an old woman's voice, deep within the
mansion, cries "Coming, Cecil!"
You hear footsteps behind the front door.
That's the wrong doorbell, and it happens because of a bug in V-RING:
<DEFINE V-RING ()
<COND (<PRSO? ROOMS>
<COND (<HERE? OUTSIDE-HOUSE>
<PERFORM ,V?RING ,MANSION-BELL>)
(T
<TELL "There's nothing here to ring." CR>)>)
(T
<TELL ,CANT "ring " A ,PRSO ,PERIOD>)>
T>
It's supposed to check for OUTSIDE-MANSION, not OUTSIDE-HOUSE.
That's the wrong doorbell, and it happens because of a bug in
V-RING
:It's supposed to check for
OUTSIDE-MANSION
, notOUTSIDE-HOUSE
.