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|| is a shorthand for OR, this is common in many C-like languages (or even algol descendants), so if the shift returns false (no element in the default array) the value of $self is set to 7899

Hi.
By default, a quantified subpattern is "greedy", that is, it will match
as many times as possible (given a particular starting location) while
still allowing the rest of...

T + 119 arbitrary characters = 120. The curly braces with the back slash ( \{ and \} are interval expressions, they repeat the part before it. So .\{119\} means 119 consecutive arbitrary...