commit https://github.com/vim/vim/commit/46c00a6565b8f1f4b7b1041d03eaceaf6ffc4aee Author: Bram Moolenaar <Bram@vim.org> Date: Mon Mar 28 14:11:42 2016 +0200 patch 7.4.1666 Problem: When reading JSON from a channel all readahead is used. Solution: Use the fill function to reduce overhead.

--- a/src/version.c
+++ b/src/version.c
@@ -749,6 +749,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1666,
+/**/
     1665,
 /**/
     1664,