+void *dup_mem __P((void *b, size_t c));
+void *copy_of __P((char *s));
+void usage __P((void));
+void logf __P((const char *str));
+void logflush __P((void));
+void fatal __P((const char *msg));
+void sysfatal __P((const char *msg));
+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 break_sequence __P((void));
+void terminate __P((int status));
+void do_file __P((char *chat_file));
+void lock __P((void));
+void delay __P((void));
+int get_string __P((register char *string));
+int put_string __P((register char *s));
+int write_char __P((int c));
+int put_char __P((char c));
+int get_char __P((void));
+void chat_send __P((register char *s));
+char *character __P((char c));
+void chat_expect __P((register char *s));
+char *clean __P((register char *s, int sending));
+void unlock __P((void));
+void lock __P((void));
+void break_sequence __P((void));
+void terminate __P((int status));
+void die __P((void));
+
+void *dup_mem(b, c)
+void *b;
+size_t c;
+ {
+ void *ans = malloc (c);
+ if (!ans)
+ fatal ("memory error!\n");
+ memcpy (ans, b, c);
+ return ans;
+ }
+
+void *copy_of (s)
+char *s;
+ {
+ return dup_mem (s, strlen (s) + 1);
+ }
+