DONE
enum { BEFORE, SEARCHHEADER, INHEADER, INDATA, DONE } where;
DATA_READ, DONE, WANT_READ, WANT_WRITE, ERROR_TLS
DONE,
#define DONE 0
enum rl_twist { DONE, CHK_LINK, FIND_ROW, SET_PARAM, RECHK_LONG, RETUNE };
#define DONE 4 /* if not found, error else unhash and return it */