commit https://github.com/vim/vim/commit/6039c7f05376f0e470cf62bf2757e653aea357f3 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jan 24 15:05:32 2016 +0100 patch 7.4.1164 Problem: No tests for comparing special variables. Error in jsondecode() not reported. test_json does not work Japanse system. Solution: Set scriptencoding. (Ken Takata) Add a few more tests. Add error.