ISALNUM          2269 parse.y        #define is_identchar(c) (SIGN_EXTEND_CHAR(c)!=-1&&(ISALNUM(c) || (c) == '_' || ismbchar(c)))
ISALNUM          3386 parse.y        	else if ((ISALNUM(c) || c == '_') && lex_p < lex_pend && is_identchar(*lex_p)) {
ISALNUM          3926 parse.y        	    if (!ISALNUM(c)) {
ISALNUM          3932 parse.y        		if (ISALNUM(term) || ismbchar(term)) {
ISALNUM          1646 regex.c        	      if (   (is_alnum  && ISALNUM(ch))
ISALNUM          1039 string.c       	if (ISALNUM(*s)) {