#include #pragma once #include #include struct singular_prefix { private: std::string m_s; friend void format_arg(fmt::BasicFormatter &formatter, const char *&format_str, const singular_prefix &sp); public: explicit singular_prefix(std::string s) : m_s(std::move(s)) { } explicit singular_prefix(std::string &&s) : m_s(std::move(s)) { } void write(fmt::Writer &w) const; }; // // Formatting support for fmtlib // void format_arg(fmt::BasicFormatter &formatter, const char *&format_str, const singular_prefix &sp);