alnum
if (!alnum(c))
if (!alnum(c))
while (*cp && alnum(*cp))
for (; alnum(*p); p++)
for (; alnum(*p); p++)
if (!strchr(alnum, expr[pos])) {
len = strspn(expr + pos, alnum);
x = strspn(buf, alnum);
if (strchr(alnum, buf[pos])) {
pos += strspn(buf+pos, alnum);
if (len != strspn(str, alnum)) {
const char alnum[] =
extern const char alnum[];