commit https://github.com/vim/vim/commit/f6157284de71d8881f3b89fbd79d1ecbf842929f Author: Bram Moolenaar <Bram@vim.org> Date: Wed Feb 10 21:07:14 2016 +0100 patch 7.4.1299 Problem: When the server sends a message with ID zero the channel handler is not invoked. (Christian J. Robinson) Solution: Recognize zero value for the request ID. Add a test for invoking the channel handler.

--- a/src/version.c
+++ b/src/version.c
@@ -748,6 +748,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1299,
+/**/
     1298,
 /**/
     1297,