Yes, the context-free idea isn't a logical necessity for expressing in BNF, because that alone can be conquered by expressing the different context types as alternative BNF definitions.

Rather, the most compelling arguments that have been made in reply here come from those perl syntax elements which overpower the nearby context, such as (amongst other examples given by various people) the e-regexp modifier.

One world, one people

In reply to Re^2: Perl not BNF-able?? by anonymized user 468275
in thread Perl not BNF-able?? by anonymized user 468275

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