diff --git a/list-objects.h b/list-objects.h
new file mode 100644
index 0000000..8a5fae6
--- /dev/null
+++ b/list-objects.h
@@ -0,0 +1,8 @@
+#ifndef LIST_OBJECTS_H
+#define LIST_OBJECTS_H
+
+void traverse_commit_list(struct rev_info *revs,
+			  void (*show_commit)(struct commit *),
+			  void (*show_object)(struct object_array_entry *));
+
+#endif