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patch 8.0.1391: encoding empty string to JSON sometimes gives "null"

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Problem:    Encoding empty string to JSON sometimes gives "null".
Solution:   Handle NULL string as empty string. (closes #2446)
This commit is contained in:
Bram Moolenaar
2017-12-15 21:25:01 +01:00
parent 4697399e8c
commit b29d328eb4
3 changed files with 9 additions and 3 deletions
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4
src/testdir/test_json.vim
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@@ -103,6 +103,10 @@ func Test_json_encode()
call assert_fails('echo json_encode(function("tr"))', 'E474:')
call assert_fails('echo json_encode([function("tr")])', 'E474:')
call assert_equal('{"a":""}', json_encode({'a': test_null_string()}))
call assert_equal('{"a":[]}', json_encode({"a": test_null_list()}))
call assert_equal('{"a":{}}', json_encode({"a": test_null_dict()}))
silent! let res = json_encode(function("tr"))
call assert_equal("", res)
endfunc