I wouldn't have immediately guessed that the -l switch would work because the POD for
perlrun states that if a value is omitted from the -l switch, it sets $\ equal to $/. Since we're changing the value of $/ in the BEGIN{} block, and since the BEGIN{} block executes at least before the -p switch, I figured that using -l would set $\ to \104. Obviously that's not the case and I was just overthinking it.
Good call bart. Great one-liner!
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