NX_SKIP
if (bitset(NX_SKIP, next_states[n]))
next_states[ST_CONN] |= NX_SKIP;
next_states[ST_HELO] |= NX_SKIP;
next_states[ST_MAIL] |= NX_SKIP;
next_states[ST_RCPT] |= NX_SKIP;
next_states[ST_HDRS] |= NX_SKIP;
next_states[ST_EOHS] |= NX_SKIP;
next_states[ST_BODY] |= NX_SKIP;
next_states[ST_DATA] |= NX_SKIP;
next_states[ST_UNKN] |= NX_SKIP;