Update runtime files.
diff --git a/runtime/doc/repeat.txt b/runtime/doc/repeat.txt
index 9c701ff..cc2cb7d 100644
--- a/runtime/doc/repeat.txt
+++ b/runtime/doc/repeat.txt
@@ -1,4 +1,4 @@
-*repeat.txt* For Vim version 8.1. Last change: 2019 May 07
+*repeat.txt* For Vim version 8.1. Last change: 2019 May 22
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -178,7 +178,7 @@
:so[urce] {file} Read Ex commands from {file}. These are commands that
start with a ":".
Triggers the |SourcePre| autocommand.
-
+ *:source!*
:so[urce]! {file} Read Vim commands from {file}. These are commands
that are executed from Normal mode, like you type
them.
@@ -186,6 +186,7 @@
|:bufdo|, in a loop or when another command follows
the display won't be updated while executing the
commands.
+ Cannot be used in the |sandbox|.
*:ru* *:runtime*
:ru[ntime][!] [where] {file} ..