commit https://github.com/vim/vim/commit/f1b6ac72293e658bb6e68c5cfd926c405b1b6f34 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Feb 23 21:26:43 2016 +0100 patch 7.4.1407 Problem: json_encode() does not handle NaN and inf properly. (David Barnett) Solution: For JSON turn them into "null". For JS use "NaN" and "Infinity". Add isnan().

--- 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 */
 /**/
+    1407,
+/**/
     1406,
 /**/
     1405,