boost::program_options:如何使validation_error具有完整的选项名称和更丰富的信息

#include <boost/program_options.hpp>
#include <iostream>

namespace po = boost::program_options;

int main(int argc, char** argv) {
    try {
        po::options_description desc("Allowed options");
        desc.add_options()
            ("input-file", po::value<std::string>(), "Input file")
            ("output-file", po::value<std::string>(), "Output file")
            ("count", po::value<int>(), "Count");

        po::variables_map vm;
        po::store(po::parse_command_line(argc, argv, desc), vm);
        po::notify(vm);

        if (vm.count("input-file")) {
            std::cout << "Input file: " << vm["input-file"].as<std::string>() << std::endl;
        }

        if (vm.count("output-file")) {
            std::cout << "Output file: " << vm["output-file"].as<std::string>() << std::endl;
        }

        if (vm.count("count")) {
            int count = vm["count"].as<int>();
            std::cout << "Count: " << count << std::endl;
        }
    } catch (const po::validation_error& e) {
        std::cerr << "Validation error: " << e.what() << std::endl;
        std::cerr << "Option: " << e.get_option_name() << std::endl;
    }

    return 0;
}