Finding Overlapping Matches Using Perl's Lookahead Assertion Matching On Linux

[ Thanks to Mike Golvach for this link. ]

"If you just up your game a little, you begin to see the power of regular expressions in Perl, and - every once in a while - find yourself in a state of utter confusion. Ironically, this is because most regular expression engines give you more than enough rope to get the job done (or is it just enough to hang yourself with? That's for later. We'll try to keep this post positive"

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