I'm guessing you agree in some way,

Hold on. Not understanding something does not imply agreement.

All I did was to state the problem which was of interest to us.

I'd need you to expand on "executing arbitrary Perl code"

I'm not sure what you're looking for, so I hope the following helps:

To determine the meaning of a token, the parser needs to be able to execute any Perl program, including shelling out to execute any binary. The algorithms executed may be non-deterministic.

In reply to Re^6: Unparseability is A Good Thing by ikegami
in thread Unparseability is A Good Thing by Jeffrey Kegler

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