132     map<string,FileInfo>::const_iterator b = before.begin();  in directory_contents_differ()
133     map<string,FileInfo>::const_iterator a = after.begin();  in directory_contents_differ()
183     ssize_t begin = 0;  in trim()  local
184     while (begin < N && spacechr(str[begin])) {  in trim()
185         begin++;  in trim()
188     while (end >= begin && spacechr(str[end])) {  in trim()
191     return string(str, begin, end-begin+1);  in trim()
214     int begin = 0;  in split_lines()  local
219             if (begin != end) {  in split_lines()
220                 result->push_back(string(str, begin, end-begin));  in split_lines()
222             begin = end+1;  in split_lines()
225     if (begin != end) {  in split_lines()
226         result->push_back(string(str, begin, end-begin));  in split_lines()