X3: expectation operator ">" with semantic rule "[]" expectation_failure<> uses managled name

[mechapede]

The expectation_failure<> failure in Spirit X3 which() function uses the mangled name when semantic actions are used. The minimal example folows below:

#include <boost/spirit/home/x3.hpp>
#include <boost/fusion/include/adapt_struct.hpp>
#include <boost/fusion/include/io.hpp>

#include <iostream>
#include <string>


// if add a get_info struct for semantic actions then get expected token
#if 0

namespace boost::spirit::x3 {
    template <typename Derived, typename Action>
    struct get_info<action<Derived, Action>>
    {
        typedef std::string result_type;
        std::string operator()(action<Derived, Action> const& p) const
        {
            return get_info<Derived>()(p.subject);
        }
    };
}

#endif


// Simple program to demonstrate expectation behavior with semantic actions
int main() {
    namespace x3 = boost::spirit::x3;

    using boost::spirit::x3::ascii::space;
    typedef std::string::const_iterator iterator_type;

    // invalid input to cause expect to fail
    std::string input = "aabb";

    // expect alone will print char as expected
    {
        auto iter = input.begin();
        auto const end = input.end();
        try {
            bool r = x3::phrase_parse(iter, end, 
                // begin gramar
                (
                    x3::char_('a') > x3::char_('b')
                )
                ,
                // end gramar
            space);

        } catch (x3::expectation_failure<std::string::iterator> const& x) {
            // catch and print the error object
            std::cout << "Which :" << x.which() << std::endl;
        }
    }

    // expect with semantic action print mangled name
    {
        auto semantic_action = [](auto &ctx) {};
        auto iter = input.begin();
        auto const end = input.end();
        try {
            bool r = x3::phrase_parse(iter, end, 
                // begin gramar
                (
                    x3::char_('a') > x3::char_('b')[semantic_action]
                )
                ,
                // end gramar
            space);

        } catch (x3::expectation_failure<std::string::iterator> const& x) {
            // catch and print the error object
            std::cout << "Which with semantic: " << x.which() << std::endl;
        }
    }

    return 0;
}

Which outputs the following results:

Which :'b'
Which with semantic: N5boost6spirit2x36actionINS1_12literal_charINS0_13char_encoding8standardEcEEZ4mainEUlRT_E_EE

If enable the code block above by chaning to #if 1 to enable:

namespace boost::spirit::x3 {
    template <typename Derived, typename Action>
    struct get_info<action<Derived, Action>>
    {
        typedef std::string result_type;
        std::string operator()(action<Derived, Action> const& p) const
        {
            return get_info<Derived>()(p.subject);
        }
    };
}

It adds get_info for semantic actions that will print the info for underlying action which is what I expected originally:

Which :'b'
Which with semantic: 'b'

I wonder if the X3 library should already include this get_info<> specialization or if this causes issues with other use cases?