commit https://github.com/vim/vim/commit/009d84a34f3678ec93921bee3bc05be2fd606264 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jan 28 14:12:00 2016 +0100 patch 7.4.1188 Problem: Using older JSON standard. Solution: Update the link. Adjust the text a bit.

--- a/src/json.c
+++ b/src/json.c
@@ -10,7 +10,7 @@
 /*
  * json.c: Encoding and decoding JSON.
  *
- * Follows this standard: http://www.ietf.org/rfc/rfc4627.txt
+ * Follows this standard: https://tools.ietf.org/html/rfc7159.html
  */
 
 #include "vim.h"