Update runtime files.
diff --git a/runtime/doc/editing.txt b/runtime/doc/editing.txt
index 40c2adb..03a33e9 100644
--- a/runtime/doc/editing.txt
+++ b/runtime/doc/editing.txt
@@ -1,4 +1,4 @@
-*editing.txt* For Vim version 8.1. Last change: 2019 Jun 10
+*editing.txt* For Vim version 8.1. Last change: 2019 Sep 27
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -1554,7 +1554,7 @@
If you want to automatically reload a file when it has been changed outside of
Vim, set the 'autoread' option. This doesn't work at the moment you write the
file though, only when the file wasn't changed inside of Vim.
-
+ *ignore-timestamp*
If you do not want to be asked or automatically reload the file, you can use
this: >
set buftype=nofile