--- stack/stack.h	2002/03/27 19:53:01	1.20
+++ stack/stack.h	2002/03/30 02:31:24	1.21
@@ -36,7 +36,8 @@
     string,
     func,			/* Function pointer */
     symb,			/* Symbol */
-    tcons			/* A pair of two values */
+    tcons,			/* A pair of two values */
+    port			/* An I/O port */
   } type:4;			/* Type of stack element */
 
   union {
@@ -51,6 +52,7 @@
     void *ptr;			/* Pointer to the content */
     struct cons_struct *c;	/* ...or a pointer to a cons cell */
     struct symbol_struct *sym;	/* ...or a pointer to a symbol */
+    FILE *p;			/* ...or an I/O stream */
     int i;			/* ...or an integer */
     float f;			/* ...or a floating point number */
   } content;			/* Stores a pointer or an integer */
@@ -121,14 +123,19 @@
 char *mangle_str(const char*);
 extern void mangle(environment*);
 void push_sym(environment*, const char*);
-extern void nl();
+extern void nl(environment*);
+extern void nlport(environment*);
 extern void type(environment*);
-void print_val(value*, int, stackitem*);
+void print_val(environment *, value*, int, stackitem*, FILE*);
 extern void print_(environment*);
 extern void print(environment*);
 extern void princ_(environment*);
 extern void princ(environment*);
-void print_st(value*, long);
+extern void printport_(environment*);
+extern void printport(environment*);
+extern void princport_(environment*);
+extern void princport(environment*);
+void print_st(environment*, value*, long);
 extern void printstack(environment*);
 extern void swap(environment*);
 extern void rot(environment*);
@@ -164,7 +171,11 @@
 extern void foreach(environment*);
 extern void to(environment*);
 extern void readline(environment*);
+extern void readlineport(environment*);
+void readlinestream(environment*, FILE*);
 extern void sx_72656164(environment*);
+extern void readport(environment*);
+void readstream(environment*, FILE*);
 extern void beep(environment*);
 extern void sx_77616974(environment*);
 extern void copying(environment*);
@@ -181,3 +192,5 @@
 extern void assq(environment*);
 void assocgen(environment*, funcp);
 extern void sx_646f(environment *);
+extern void sx_6f70656e(environment*);
+extern void sx_636c6f7365(environment*);