Function check_output

cpp-subprocess/subprocess.hpp:2228–2231

 */
template <typename... Args>
OutBuffer check_output(std::initializer_list<const char*> plist, Args&&... args)
{
  return (detail::check_output_impl(plist, std::forward<Args>(args)...));
}

template <typename... Args>
OutBuffer check_output(const std::string& arg, Args&&... args)