Calculator example, unary operators

[hia3]

Calculator example can't parse "-(5+5)".

[ColinH]

For simplicity, the calculator example doesn't currently implement unary operators (except for signs that are part of an integer literal).

[ColinH]

In case you opened this issue because you are interested in how to handle unary operators in the calculator example, which is not quite trivial, you can contact us at pegtl(at)colin-hirsch.net.

[hia3]

Thanks :-)

But I was just reading the example and thought that this might be omission. If this is as intended, I'm okay with that.