Update runtime files.
diff --git a/runtime/doc/autocmd.txt b/runtime/doc/autocmd.txt
index b901f21..c6358e4 100644
--- a/runtime/doc/autocmd.txt
+++ b/runtime/doc/autocmd.txt
@@ -1,4 +1,4 @@
-*autocmd.txt* For Vim version 8.0. Last change: 2016 Sep 27
+*autocmd.txt* For Vim version 8.0. Last change: 2017 Jan 14
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -33,7 +33,7 @@
features, such as editing compressed files (see |gzip-example|). The usual
place to put autocommands is in your .vimrc or .exrc file.
- *E203* *E204* *E143* *E855*
+ *E203* *E204* *E143* *E855* *E937*
WARNING: Using autocommands is very powerful, and may lead to unexpected side
effects. Be careful not to destroy your text.
- It's a good idea to do some testing on an expendable copy of a file first.