ISUPPER          2312 libglibc/regex.c 				&& (ISUPPER (ch) || ISLOWER (ch)))
ISUPPER          2357 libglibc/regex.c                                 || (is_upper  && ISUPPER (ch))
ISUPPER          2361 libglibc/regex.c 				&& (ISUPPER (ch) || ISLOWER (ch)))
ISUPPER          5687 libglibc/regex.c         preg->translate[i] = ISUPPER (i) ? TOLOWER (i) : i;