commit 059b7482a2d9d4cebbf4c01b2b2ea6f1e783cc20
author Bram Moolenaar <Bram@vim.org> Sun Feb 05 16:34:43 2017 +0100
committer Bram Moolenaar <Bram@vim.org> Sun Feb 05 16:34:43 2017 +0100
tree 48278b4312b2ba3eb17626c3be4f51c04d9ad8bb
parent 2f9e575583c2ad3978ee3d0f790eeff7df56bd6c

patch 8.0.0309: cannot use an empty key in json

Problem:    Cannot use an empty key in json.
Solution:   Allow for using an empty key.

src/testdir/test_json.vim

diff --git a/src/testdir/test_json.vim b/src/testdir/test_json.vim
index 6616365..6c3d16c 100644
--- a/src/testdir/test_json.vim
+++ b/src/testdir/test_json.vim
@@ -144,6 +144,11 @@
   call assert_equal(type(v:none), type(json_decode('')))
   call assert_equal("", json_decode('""'))
 
+  " empty key is OK
+  call assert_equal({'': 'ok'}, json_decode('{"": "ok"}'))
+  " but not twice
+  call assert_fails("call json_decode('{\"\": \"ok\", \"\": \"bad\"}')", 'E938:')
+
   call assert_equal({'n': 1}, json_decode('{"n":1,}'))
   call assert_fails("call json_decode(\"{'n':'1',}\")", 'E474:')
   call assert_fails("call json_decode(\"'n'\")", 'E474:')