charset_not
BUF_PUSH (*p == '^' ? charset_not : charset);
if ((re_opcode_t) b[-2] == charset_not
case charset_not:
case charset_not:
boolean not = (re_opcode_t) *(p - 1) == charset_not;
|| (re_opcode_t) p1[3] == charset_not)
int not = (re_opcode_t) p1[3] == charset_not;
case charset_not:
(re_opcode_t) *(p - 1) == charset_not ? "_not" : "");