commit 16e9b85113e0b354ece1cb4f5fcc7866850f3685
author Bram Moolenaar <Bram@vim.org> Sun May 19 19:59:35 2019 +0200
committer Bram Moolenaar <Bram@vim.org> Sun May 19 19:59:35 2019 +0200
tree 2abe4e3cffe8b0281f0690e5570a47eb2198a826
parent f5842c5a533346c4ff41ff666e465c85f1de35d5

patch 8.1.1355: obvious mistakes are accepted as valid expressions

Problem:    Obvious mistakes are accepted as valid expressions.
Solution:   Be more strict about parsing numbers. (Yasuhiro Matsumoto,
            closes #3981)

src/testdir/test_json.vim

diff --git a/src/testdir/test_json.vim b/src/testdir/test_json.vim
index e16a7f0..8f85a58 100644
--- a/src/testdir/test_json.vim
+++ b/src/testdir/test_json.vim
@@ -176,6 +176,10 @@
 
   call assert_fails('call json_decode("{{}:42}")', "E474:")
   call assert_fails('call json_decode("{[]:42}")', "E474:")
+
+  call assert_fails('call json_decode("\"\\u111Z\"")', 'E474:')
+  call assert_equal('[😂]', json_decode('"[\uD83D\uDE02]"'))
+  call assert_equal('a😂b', json_decode('"a\uD83D\uDE02b"'))
 endfunc
 
 let s:jsl5 = '[7,,,]'