ISUNDER
[SYNBASE + '_'] = ISUNDER,
#define is_name(c) ((is_type+SYNBASE)[(int)c] & (ISUPPER|ISLOWER|ISUNDER))
#define is_in_name(c) ((is_type+SYNBASE)[(int)c] & (ISUPPER|ISLOWER|ISUNDER|ISDIGIT))