OP: maybe it was an oversight, but when changing the nested logic in a condition such as that you must necessarily change the higher level logic if you wish for the original to be equivalent exactly opposite to the negated version. 

if (($a == 3) || ($a ==  77) || ($a == 8))
-- is exactly opposite to --
if (($a != 3) && ($a !=  77) && ($a != 8))

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Update: correct - meant to show exact opposites, used the most wrong possible to describe this.

In reply to Re^2: Multiple numeric not or compare in if statement by perlfan
in thread Multiple numeric not or compare in if statement by RedJeep

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