Function regex_escape

smallthinker/common/common.cpp:467–470

}

std::string regex_escape(const std::string & s) {
    static const std::regex special_chars("[.^$|()*+?\\[\\]{}\\\\]");
    return std::regex_replace(s, special_chars, "\\$0");
}

std::string string_join(const std::vector<std::string> & values, const std::string & separator) {
    std::ostringstream result;