Format

std::regex_replace and std::match_results.format in combination with capture groups enables you to format text. You can use a format string together with a placeholder to insert the value.

Here are both possibilities:

Formatting with regex

// format.cpp 
...
#include <regex>
...

std::string future{"Future"};
const std::string unofficial{"unofficial, C++0x"};
const std::string official{"official, C++11"};

std::regex regValues{"(.*),(.*)"};
std::string standardText{"The $1 name of the new C++ standard is $2."};
std::string textNow= std::regex_replace(unofficial, regValues, standardText);
std::cout << textNow << std::endl;
                        // The unofficial name of the new C++ standard is C++0x.

std::smatch smatch;
if (std::regex_match(official, smatch, regValues)){
  std::cout << smatch.str();                                   // official,C++11
  std::string textFuture= smatch.format(standardText...