+/* ansi.c */
+void ansi_write(ANSI *a, char *buf, int n);
+void ansi_getsize(ANSI *a);
+void ansi_move(ANSI *a, CRT_Pos p);
+void ansi_showhide_cursor(ANSI *a, int hide);
+void ansi_force_attr_normal(ANSI *a);
+void ansi_set_attr(ANSI *a, int attr);
+void ansi_render(ANSI *a, CRT_CA ca);
+void ansi_cls(ANSI *a);
+void ansi_draw(ANSI *a, CRT *c);
+void ansi_reset(ANSI *a);
+void ansi_parse_char(ANSI *a, int c, VT102 *v);
+void ansi_parse(ANSI *a, char *buf, int len, VT102 *v);
+int ansi_dispatch(ANSI *a, VT102 *v);
+/* crt.c */
+void crt_erase(CRT *c, CRT_Pos s, CRT_Pos e, int ea);
+void crt_cls(CRT *c);
+void crt_scroll_up(CRT *c, CRT_Pos s, CRT_Pos e, int ea);
+void crt_scroll_down(CRT *c, CRT_Pos s, CRT_Pos e, int ea);
+void crt_reset(CRT *c);
+void crt_insert(CRT *c, CRT_CA ca);
+/* html.c */
+void html_entity(FILE *f, int c);
+void html_render(FILE *f, CRT_CA c);
+void html_draw(FILE *f, CRT *c);
+/* libsympathy.c */
+struct termios old;
+void testy(void);
+/* render.c */
+/* testtty.c */
+int open_fd_to_bash(void);
+/* version.c */
+/* vt102.c */
+void vt102_log_line(VT102 *v, int line);
+void vt102_clip_cursor(VT102 *v, CRT_Pos tl, CRT_Pos br);
+void vt102_cursor_normalize(VT102 *v);
+void vt102_cursor_carriage_return(VT102 *v);
+void vt102_cursor_advance_line(VT102 *v);
+void vt102_cursor_advance(VT102 *v);
+void vt102_do_pending_wrap(VT102 *v);
+void vt102_cursor_retard(VT102 *v);
+void vt102_reset_tabs(VT102 *v);
+void vt102_cursor_advance_tab(VT102 *v);
+int vt102_cursor_home(VT102 *v);
+int vt102_cursor_absolute(VT102 *v, int x, int y);
+int vt102_cursor_relative(VT102 *v, int x, int y);
+void vt102_delete_from_line(VT102 *v, CRT_Pos p);
+void vt102_insert_into_line(VT102 *v, CRT_Pos p);
+void vt102_change_mode(VT102 *v, int private, char *ns, int set);
+void vt102_parse_mode_string(VT102 *v, char *buf, int len);
+void vt102_change_attr(VT102 *v, char *na);
+void vt102_parse_attr_string(VT102 *v, char *buf, int len);
+void vt102_save_state(VT102 *v);
+void vt102_restore_state(VT102 *v);
+void vt102_parse_esc(VT102 *v, int c);
+void vt102_parse_csi(VT102 *v, char *buf, int len);
+void vt102_status_line(VT102 *v, char *str);
+void vt102_parse_char(VT102 *v, int c);
+int vt102_parse(VT102 *v, char *buf, int len);
+void vt102_parser_reset(VT102_parser *p);
+void vt102_send(VT102 *v, uint8_t key);
+void vt102_reset(VT102 *v);
+int vt102_dispatch(VT102 *v);
+VT102 *vt102_new(TTY *t);
+void vt102_free(VT102 *v);
+/* tty.c */
+TTY *tty_new_test(void);
+int tty_read(TTY *t, void *buf, int len);
+int tty_write(TTY *t, void *buf, int len);
+void tty_free(TTY *t);