ISUPPER          2232 regex.cpp      				&& (ISUPPER (ch) || ISLOWER (ch)))
ISUPPER          2277 regex.cpp                                      || (is_upper  && ISUPPER (ch))
ISUPPER          2281 regex.cpp      				&& (ISUPPER (ch) || ISLOWER (ch)))
ISUPPER          5526 regex.cpp              preg->translate[i] = ISUPPER (i) ? tolower (i) : i;