67                       std::string::size_type begin)  in find_next_placeholder()  argument
69     begin = expansion.find('%', begin);  in find_next_placeholder()
70     while (begin != std::string::npos && expansion[begin + 1] == '%')  in find_next_placeholder()
71         begin = expansion.find('%', begin + 2);  in find_next_placeholder()
72     if (begin == std::string::npos)  in find_next_placeholder()
74     if (begin == expansion.length() - 1)  in find_next_placeholder()
77     std::string::size_type end = begin + 1;  in find_next_placeholder()
80     const std::string placeholder = expansion.substr(begin, end - begin + 1);  in find_next_placeholder()
85     return std::make_pair(begin, placeholder);  in find_next_placeholder()
161 strip_double_percent(const std::string& in, const std::string::size_type begin,  in strip_double_percent()  argument
164     std::string part = in.substr(begin, end - begin);  in strip_double_percent()
174     return std::make_pair(in.substr(0, begin) + part + in.substr(end), removed);  in strip_double_percent()