1 Buffer
* fill_buffer(char *);
2 Line
* add_line(Buffer
*, int, char *, char *, Line
*);
3 Line
* parse_line(char *, char *);
4 Line
* matching_next(Line
*);
5 Line
* matching_prev(Line
*);
6 int line_match_input(Line
*, char *, Opt
*);
7 void filter_lines(Buffer
*, Opt
*);
