--- stack/stack.c	2002/01/08 00:03:16	1.5
+++ stack/stack.c	2002/01/08 13:46:05	1.7
@@ -11,7 +11,7 @@
 
 typedef struct stack_item
 {
-  enum {value, string, ref, func, symbol} type;
+  enum {value, string, ref, func, symbol, list} type;
   union {
     void* ptr;
     int val;
@@ -121,15 +121,17 @@
 
 int push_ref(stackitem** stack_head, hashtbl in_hash, const char* in_string)
 {
-  void* handle;
+  static void* handle= NULL;
   void* symbol;
-  
+
   stackitem* new_item= malloc(sizeof(stackitem));
   new_item->content.ptr= *hash(in_hash, in_string);
   new_item->type= ref;
 
-  if(new_item->content.ptr==NULL) {
+  if(handle==NULL)
     handle= dlopen(NULL, RTLD_LAZY);
+
+  if(new_item->content.ptr==NULL) {
     symbol= dlsym(handle, in_string);
     if(dlerror()==NULL) 
       def_func(in_hash, symbol, in_string);
@@ -148,6 +150,12 @@
 {
   stackitem* temp= *stack_head;
 
+  if((*stack_head)==NULL)
+    return;
+  
+  if((*stack_head)->type==string)
+    free((*stack_head)->content.ptr);
+
   *stack_head= (*stack_head)->next;
   free(temp);
 }
@@ -167,8 +175,11 @@
     printf("%ld: \"%s\"\n", counter, (char*)stack_head->content.ptr);
     break;
   case ref:
+    printf("%ld: %s\n", counter, ((stackitem*)stack_head->content.ptr)->id);
+    break;
   case func:
   case symbol:
+  default:
     printf("%ld: %p\n", counter, stack_head->content.ptr);
     break;
   }
@@ -243,9 +254,10 @@
   case string:
     printf("%s", (char*)(*stack_head)->content.ptr);
     break;
-  case symbol:
-    printf("%s", (*stack_head)->id);
   case ref:
+    printf("%s", ((stackitem*)(*stack_head)->content.ptr)->id);
+    break;
+  case symbol:
   default:
     printf("%p", (*stack_head)->content.ptr);
     break;
@@ -254,6 +266,37 @@
   toss(stack_head);
 }
 
+extern void pack(stackitem** stack_head)
+{
+  void* delimiter;
+  stackitem *iterator, *temp, *pack;
+
+  if((*stack_head)==NULL)
+    return;
+
+  delimiter= (*stack_head)->content.ptr;
+  toss(stack_head);
+
+  iterator= *stack_head;
+
+  while(iterator->next!=NULL && iterator->next->content.ptr!=delimiter)
+    iterator= iterator->next;
+
+  temp= *stack_head;
+  *stack_head= iterator->next;
+  iterator->next= NULL;
+  
+  if(*stack_head!=NULL && (*stack_head)->content.ptr==delimiter)
+    toss(stack_head);
+
+  pack= malloc(sizeof(stackitem));
+  pack->type= list;
+  pack->content.ptr= temp;
+
+  push(stack_head, pack);
+}
+  
+
 extern void nl()
 {
   printf("\n");