Overload set bad

template<class R>
std::enable_if<grammar::is_rule<R>::value>::type
bad(
    const R& r,
    core::string_view s);
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template<class R>
std::enable_if<grammar::is_rule<R>::value>::type
bad(
    const R& r,
    core::string_view s,
    const system::error_code& e);
  » more...