Update runtime files
diff --git a/runtime/doc/channel.txt b/runtime/doc/channel.txt
index 9b36c07..8767d87 100644
--- a/runtime/doc/channel.txt
+++ b/runtime/doc/channel.txt
@@ -1,4 +1,4 @@
-*channel.txt* For Vim version 8.1. Last change: 2019 Aug 22
+*channel.txt* For Vim version 8.1. Last change: 2019 Sep 11
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -508,6 +508,9 @@
expression. When there is an error or timeout it returns an
empty string.
+ Note that while waiting for the response, Vim handles other
+ messages. You need to make sure this doesn't cause trouble.
+
Can also be used as a |method|: >
GetChannel()->ch_evalexpr(expr)