Updated runtime files.
diff --git a/runtime/doc/autocmd.txt b/runtime/doc/autocmd.txt
index fd062b2..e3ba3d7 100644
--- a/runtime/doc/autocmd.txt
+++ b/runtime/doc/autocmd.txt
@@ -1,4 +1,4 @@
-*autocmd.txt*   For Vim version 7.4.  Last change: 2016 Jul 19
+*autocmd.txt*   For Vim version 7.4.  Last change: 2016 Jul 29
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1163,10 +1163,11 @@
 				different from existing {event} names, as this
 				most likely will not do what you intended.
 
-						*:augroup-delete* *E367*
+						*:augroup-delete* *E367* *W19*
 :aug[roup]! {name}		Delete the autocmd group {name}.  Don't use
 				this if there is still an autocommand using
-				this group!  This is not checked.
+				this group!  You will get a warning if doing
+				it anyway.
 
 To enter autocommands for a specific group, use this method:
 1. Select the group with ":augroup {name}".