Any static analysis over Perl code is not reliable Perl Cannot Be Parsed: A Formal Proof, in simple cases like this you might be able to trace the origins of a variable but as long as you attempt the same thing over more complex code you will get into trouble because the Perl parser adapts to the run time environment.

In reply to Re: Static analysis using PPI by bluescreen
in thread Static analysis using PPI by PerlOnTheWay

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