wget blunders ahead even though given invalid -Y switch

[Dan Jacobson]

Why doesn't wget stop right away when given a wrong -Y switch?  For
instance, my name is Jim Phelps, my mission?  to retrieve the file
without triggering the burglar alarm connected to the proxy... but
your blundering ahead here instead of giving Jim a second chance with
-Y off causes Jim to get disposed of.

$ wget -Y no ddd
wget: useproxy: Please specify on or off.
--20:30:39--  http://ddd:80/
           => `index.html'
Connecting to localhost:8080... connected!
Proxy request sent, awaiting response... 404 WWWOFFLE Will Get

wget 1.5.3
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