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in reply to Re: Perl not BNF-able??
in thread Perl not BNF-able??

The problem with 'Try it' is that it's an all or nothing proposition. For lisp, the BNF is small enough not to worry about that. I can see that you can't wrap up a piece of non-context-free syntax in isolation. However, what I expected was that it might be possible to describe different syntax-elements for each type of contextual variation.

I had a bad feeling about eval from the start, but I will still need to see where the process breaks down when worked through from first principles before I understand exactly what will go wrong (assuming the context-free issue is insurmountable, that is).

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