--- stack/stack.c	2002/02/02 18:36:19	1.23
+++ stack/stack.c	2002/02/02 20:06:11	1.25
@@ -64,7 +64,7 @@
   out_hash= out_hash%HASHTBLSIZE;
   position= &(in_hashtbl[out_hash]);
 
-  while(position != NULL){
+  while(1){
     if(*position==NULL)		/* If empty */
       return position;
     
@@ -73,8 +73,6 @@
 
     position= &((*position)->next); /* Try next */
   }
-  return NULL;			/* end of list reached without finding
-                                   an empty position */
 }
 
 /* Generic push function. */
@@ -218,6 +216,7 @@
     printf("\"%s\"", (char*)temp->content.ptr);
     break;
   case symbol:
+  case func:
     printf("%s", temp->id);
     break;
   default:
@@ -286,27 +285,27 @@
   void* delimiter;
   stackitem *iterator, *temp, *pack;
 
-  if((*stack_head)==NULL) {
-    printerr("Stack empty");
-    return;
-  }
-
   delimiter= (*stack_head)->content.ptr; /* Get delimiter */
   toss(stack_head);
 
   iterator= *stack_head;
 
-  /* Search for first delimiter */
-  while(iterator->next!=NULL && iterator->next->content.ptr!=delimiter)
-    iterator= iterator->next;
-
-  /* Extract list */
-  temp= *stack_head;
-  *stack_head= iterator->next;
-  iterator->next= NULL;
-  
-  if(*stack_head!=NULL && (*stack_head)->content.ptr==delimiter)
+  if(iterator==NULL || iterator->content.ptr==delimiter) {
+    temp= NULL;
     toss(stack_head);
+  } else {
+    /* Search for first delimiter */
+    while(iterator->next!=NULL && iterator->next->content.ptr!=delimiter)
+      iterator= iterator->next;
+    
+    /* Extract list */
+    temp= *stack_head;
+    *stack_head= iterator->next;
+    iterator->next= NULL;
+    
+    if(*stack_head!=NULL && (*stack_head)->content.ptr==delimiter)
+      toss(stack_head);
+  }
 
   /* Push list */
   pack= malloc(sizeof(stackitem));
@@ -407,6 +406,9 @@
   new_head= temp= (*stack_head)->content.ptr;
   toss(stack_head);
 
+  if(temp==NULL)
+    return;
+
   /* Search the end of the list */
   while(temp->next!=NULL)
     temp= temp->next;
@@ -503,6 +505,13 @@
   exit(EXIT_SUCCESS);
 }
 
+/* Clear stack */
+extern void clear(stackitem** stack_head)
+{
+  while(*stack_head!=NULL)
+    toss(stack_head);
+}
+
 int main()
 {
   stackitem* s= NULL;