From Regexp::Common::zip 

$RE{zip}{US}{-extended => [yes|no|allow]}

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What is going on with {-extended => [yes|no|allow]}?

It kinda looks like a hash slice, but it's not, right? How is that syntax able to set an option?

Might be a simple answer, just puzzles me this afternoon.

In reply to What is this magic? by toasty

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