+
+/* Older libreadline versions do not provide rl_outstream.
+ However, it is almost always going to be the same as stdout. */
+#if ! HAVE_RL_OUTSTREAM
+# define rl_outstream stdout
+#endif
+
+
+#if HAVE_READLINE
+/* Similarly, rl_echo_signal_char is fairly recent.
+ We provide our own crude version if it is not present. */
+#if ! HAVE_RL_ECHO_SIGNAL_CHAR
+static void
+rl_echo_signal_char (int sig)
+{
+#if HAVE_TERMIOS_H
+ struct termios t;
+ if (0 == tcgetattr (0, &t))
+ {
+ cc_t c = t.c_cc[VINTR];
+
+ if (c >= 0 && c <= 'Z' - 'A')
+ fprintf (rl_outstream, "^%c", 'A' + c - 1);
+ else
+ fprintf (rl_outstream, "%c", c);
+ }
+ else
+#endif
+ fprintf (rl_outstream, "^C");
+
+ fflush (rl_outstream);
+}
+#endif
+#endif
+
+