Alternative to parent_path() on std::filesystem::path with Windows style path

main.cpp

#include <filesystem>
#include <string>
#include <iostream>
#include <regex>

namespace fs = std::filesystem;

int main() {
	fs::path p = "e:\\abc\\xyz.txt";
	std::string s = p.string();
	s = std::regex_replace(s, std::regex("\\\\"), "/");
	std::string s2 = fs::path(s).remove_filename().string();
	s2 = std::regex_replace(s2, std::regex("/"), "\\");
	fs::path n = s2;
	std::cout << "converted " << p << " to " << s << " then to " << n << "\n";
}