-void *dup_mem __P((void *b, size_t c));
-void *copy_of __P((char *s));
-void usage __P((void));
-void logf __P((const char *fmt, ...));
-void fatal __P((int code, const char *fmt, ...));
-SIGTYPE sigalrm __P((int signo));
-SIGTYPE sigint __P((int signo));
-SIGTYPE sigterm __P((int signo));
-SIGTYPE sighup __P((int signo));
-void unalarm __P((void));
-void init __P((void));
-void set_tty_parameters __P((void));
-void echo_stderr __P((int));
-void break_sequence __P((void));
-void terminate __P((int status));
-void do_file __P((char *chat_file));
-int get_string __P((register char *string));
-int put_string __P((register char *s));
-int write_char __P((int c));
-int put_char __P((int c));
-int get_char __P((void));
-void chat_send __P((register char *s));
-char *character __P((int c));
-void chat_expect __P((register char *s));
-char *clean __P((register char *s, int sending));
-void break_sequence __P((void));
-void terminate __P((int status));
-void pack_array __P((char **array, int end));
-char *expect_strtok __P((char *, char *));
-int vfmtmsg __P((char *, int, const char *, va_list)); /* vsprintf++ */
-
-int main __P((int, char *[]));
-
-void *dup_mem(b, c)
-void *b;
-size_t c;
+void *dup_mem (void *b, size_t c);
+void *copy_of (char *s);
+char *grow (char *s, char **p, size_t len);
+void usage (void);
+void msgf (const char *fmt, ...);
+void fatal (int code, const char *fmt, ...);
+SIGTYPE sigalrm (int signo);
+SIGTYPE sigint (int signo);
+SIGTYPE sigterm (int signo);
+SIGTYPE sighup (int signo);
+void unalarm (void);
+void init (void);
+void set_tty_parameters (void);
+void echo_stderr (int);
+void break_sequence (void);
+void terminate (int status);
+void do_file (char *chat_file);
+int get_string (register char *string);
+int put_string (register char *s);
+int write_char (int c);
+int put_char (int c);
+int get_char (void);
+void chat_send (register char *s);
+char *character (int c);
+void chat_expect (register char *s);
+char *clean (register char *s, int sending);
+void break_sequence (void);
+void terminate (int status);
+void pack_array (char **array, int end);
+char *expect_strtok (char *, char *);
+int vfmtmsg (char *, int, const char *, va_list); /* vsprintf++ */
+
+int main (int, char *[]);
+
+void *dup_mem(void *b, size_t c)