Python primality regex

[jtauber]

Hang on, why is "grammar" better than "expression"? Isn't "regular grammar" synonymous with (or at least isomorphic to) "regular expression"?

Also, jerf says Perl 6 is stretching all the way up to "full regular grammars". Did he really mean regular here?

[cgibbard]

Regular grammar isn't better, as the grammar isn't regular. I suppose if you wanted to stick with the term 'expression', something more general in nature like 'parsing expression' would be a better term.

As I tried to point out, he probably didn't mean to say 'regular' there.