It isn't really like "local" scoping, because they inherit inward into inner blocks. Although I couldn't have predicted that they'd retain the same value each time, you have triggered one of my pet peeves: namely using $1 without testing whether or not the match succeeds. Please write your code so that you avoid $1 unless you are sure of a match, and problems like this will go away.

As for the "localization", it's more like "scope-limited copy-on-write". If you're in an inner scope and you change $1, the effect doesn't propogate to an outer scope. However, if you merely access it, you get the inherited outer value.

-- Randal L. Schwartz, Perl hacker

In reply to •Re: Regex Capturing: Is this a bug or a feature? by merlyn
in thread Regex Capturing: Is this a bug or a feature? by shotgunefx

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