The answer is that RecDescent parsers do not work that way. They don't backtrack on failure; they just fail. Of course, there's nothing to prevent a recursive descent parser from incorporating backtracking too, but RecDescent doesn't.

So, if you need backtracking in part of your grammar, you need to use plain old regexes there. Sorry.

Damian

In reply to Re: Re: Re: Backtracking in Parse::RecDescent (solution) by Anonymous Monk
in thread Backtracking in Parse::RecDescent by ruscoekm

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