Hi, in several places I need to have code which works both with char and wchar_t. Those are template functions. I also work with paths there so I wanted to actually write something like template <typename CharType> void foo(const std::basic_string<CharType>& s) { typedef fs::basic_path<std::basic_string<CharType> > path_type; ... } but it turned out that I can't do it because 1) basic_path has the second Traits template parameter mandatory and 2) this Traits parameter has actually different type for path and wpath: struct path_traits; typedef basic_path< std::string, path_traits > path; // ... struct BOOST_FILESYSTEM_DECL wpath_traits; typedef basic_path< std::wstring, wpath_traits > wpath; Of course, I can easily workaround it with my own traits, but I wonder could it be in the first place like: template<class String> class basic_path_traits; template<class String, class Traits = basic_path_traits<String> > class basic_path; with basic_path_traits being specialized for std::string and std::wstring and fs::path and fs::wpath being just typedef basic_path< std::string > path; typedef basic_path< std::wstring > wpath; ? Thanks. -- Alexei Alexandrov