Redo tail closer to the original design. Add more tests for large data sets. (Still no -f support yet.)

1 files changed, 10 insertions, 0 deletions

diff --git a/lib/llist.c b/lib/llist.c
index 7b41fd08..596da40f 100644
--- a/lib/llist.c
+++ b/lib/llist.c
@@ -33,6 +33,16 @@ void *llist_pop(void *list)
   return (void *)next;
 }
 
+void *dlist_pop(void *list)
+{
+  struct double_list **pdlist = (struct double_list **)list, *dlist = *pdlist;
+
+  dlist->next->prev = dlist->prev;
+  dlist->prev->next = *pdlist = dlist->next;
+
+  return dlist;
+}
+
 void dlist_add_nomalloc(struct double_list **list, struct double_list *new)
 {
   if (*list) {