There are currently two signatures available: - `read_json(std::string const&, ...)` - `read_json(std::basic_istream<...> const&, ...)` In case of Windows and a file name with non-standard characters I cannot rely on `read_json(std::string const&, ...)`. I therefore use this workaround: `boost::filesystem::path const filename(L"Some foreign language file name");` `boost::filesystem::ifstream ifs(filename);` `read_json(ifs, ...);` In case of an error, the exception thrown does not contain the filename and I have to construct a message of my own. I would like to request these additions: - `read_json(boost::filesystem::path const&, ...)` - `read_json(std::wstring const&, ...)`