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Is too valid

Grrr:


And yet:

Is too valid. Check the spec, y'all. Cf. the grammar for "." In particular:

     ::= any one of the 128 ASCII characters, but not any
               or 
     ::= "<" | ">" | "(" | ")" | "[" | "]" | "\" | "."
              | "," | ";" | ":" | "@"  """ | the control
              characters (ASCII codes 0 through 31 inclusive and
              127)

Comments

You get an A+ for pointing that out! ;)

And thanks for the "y'all". It's good to see you haven't become too British.

Thanks!

Have I become British at all?

Well, when you keep talking about "functional programming" and "theory" and all that, people start to wonder. It's so ... un-American! ;)

Too right, Ez. Thanks.

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