iswhite
while (iswhite(*bufptr)) {
while ((ch = next_char()) == '\n' || iswhite(ch)) {
while ((ch = next_char()) == '\n' || iswhite(ch)) {
while ((ch = next_char()) == '.' || iswhite(ch)) {
iswhite(*tok_ptr) || *tok_ptr == ',';
} while (iswhite(c));
while (GETC(!=, EOF) && iswhite(c))
if (iswhite(c))
if (!iswhite(c))
while (iswhite(c))
if (!iswhite(c))
if (!iswhite(c)) {
while (iswhite(c)) {