int hist_gotit(char *msgid);
char *hist_status(void);
int hist_upto(void);
int hist_add(char *mid, char *s_posted, char *s_expires, char *grps);
void hist_flush(void);
void hist_append(char *s);
int hist_open(int mode);
int hist_open_read(void);
int hist_open_write(void);
int hist_init(void);
void hist_setsize(int x);  /* Call this if we are taking a full feed */
void hist_addidx(char *msgid, int offset); 
int hist_addone(int **hptr, int offset);
int hist_find(char *msgid, int *grp, int *num);
char *hist_exists(char *msgid);
char *hist_line(int h); /* Ugly, reads until EOL */
char *hist_next(void);  /*Read the next line, and return NULL on EOF */
char *hist_line2(int h); /* Ugly, reads until two EOL's so it's got a whole record*/
char * hist_after(int date);
int hist_date_expires(char *rec);  /*Second date, zero if is '-' */
int hist_date_arrived(char *rec);
char *hist_groupfirst(char *rec);
char *hist_groupnext(void);
int hist_groupnextnum(void);
char * hist_gname(char *rec, int g); /* Return group and num */
int hist_group(char *s,int n);
int hist_num(char *s,int g);
int hist_writenew(char *s);

void hist_close(void);

void hnew_write(char *s);
void hnew_close(void);
void hnew_idx_add(int a, int b);
void hnew_idx_flush(void);

int hist_idx_read(int sz);
void hist_switch(void);
void hist_idx_add(int a, int b);
void hist_idx_flush(void);
void hist_rebuild(void);