Your regexp is getting turned into //ms, which matches everything, because whitespace is removed from the regex when you use /x. Either remove the /x modifier, or use \s instead of literal whitespace.

We're not surrounded, we're in a target-rich environment!

In reply to Re: Regex for Differentiating Underscore and Whitespace by jasonk
in thread Regex for Differentiating Underscore and Whitespace by neversaint

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