BUILD_CHARCLASS_LOOP
BUILD_CHARCLASS_LOOP (isalnum);
BUILD_CHARCLASS_LOOP (iscntrl);
BUILD_CHARCLASS_LOOP (islower);
BUILD_CHARCLASS_LOOP (isspace);
BUILD_CHARCLASS_LOOP (isalpha);
BUILD_CHARCLASS_LOOP (isdigit);
BUILD_CHARCLASS_LOOP (isprint);
BUILD_CHARCLASS_LOOP (isupper);
BUILD_CHARCLASS_LOOP (isblank);
BUILD_CHARCLASS_LOOP (isgraph);
BUILD_CHARCLASS_LOOP (ispunct);
BUILD_CHARCLASS_LOOP (isxdigit);