--- gforth/Attic/io.h	1994/05/31 07:26:59	1.2
+++ gforth/Attic/io.h	1994/07/08 15:00:48	1.3
@@ -1,11 +1,15 @@
 /* Input driver header */
 
+#include <setjmp.h>
+
 unsigned char getkey(FILE *);
-int key_avail(FILE *);
+long key_avail(FILE *);
 void prep_terminal();
 void deprep_terminal();
 void install_signal_handlers(void);
 
+extern jmp_buf throw_jmp_buf;
+
 #define key()		getkey(stdin)
 #define key_query	-(!!key_avail(stdin)) /* !! FLAG(...)? - anton */
          		/* flag was originally wrong -- lennart */