29 std::string tokenizer(std::string::const_iterator& it,  in tokenizer()  argument
33     for (; it != end && std::isspace(*it); ++it);  in tokenizer()
34     if (it == end) return {};  in tokenizer()
36     auto start = it;  in tokenizer()
38     if (strchr(reserved, *it)) return {start, ++it};  in tokenizer()
40         ++it;  in tokenizer()
41         if (it == end || std::isspace(*it) || strchr(reserved, *it)) return {start, it};  in tokenizer()
48     for (auto it = flags.begin(); ; ) {  in split()  local
49         auto flag = tokenizer(it, flags.end(), delim);  in split()
54         auto token = tokenizer(it, flags.end(), delim);  in split()
87     for (auto it = devices.begin(); ; ) {  in getDeviceAddressPairs()  local
88         auto token = tokenizer(it, devices.end(), delim);  in getDeviceAddressPairs()
91         auto device = tokenizer(it, devices.end(), delim);  in getDeviceAddressPairs()
94         token = tokenizer(it, devices.end(), delim);  in getDeviceAddressPairs()
98         auto address = tokenizer(it, devices.end(), delim);  in getDeviceAddressPairs()
103             token = tokenizer(it, devices.end(), delim);  in getDeviceAddressPairs()
109         token = tokenizer(it, devices.end(), delim);  in getDeviceAddressPairs()