patch 7.4.774
Problem:    When using the CompleteDone autocommand event it's difficult to
            get to the completed items.
Solution:   Add the v:completed_items variable. (Shougo Matsu)
diff --git a/src/vim.h b/src/vim.h
index fe8f558..4e36f3d 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -1897,7 +1897,8 @@
 #define VV_OLDFILES	55
 #define VV_WINDOWID	56
 #define VV_PROGPATH	57
-#define VV_LEN		58	/* number of v: vars */
+#define VV_COMPLETED_ITEM 58
+#define VV_LEN		59	/* number of v: vars */
 
 #ifdef FEAT_CLIPBOARD