# YAML Test Matrix

--- &test-CML9
  Title: Missing comma in flow
  Tags: [ comment, error, flow ]

YAML

key: [ word1
#  xxx
  word2 ]

Expected Events

+STR
+DOC
+MAP
=VAL :key
+SEQ []
=VAL :word1

Expected JSON



hs-reference-yeast

 invalid_incorrect
Line  Col Char Byte Token|Content
   1    0    0    0 +DOC |
   1    0    0    0 +NODE|
   1    0    0    0 +MAP |
   1    0    0    0 +PAIR|
   1    0    0    0 +NODE|
   1    0    0    0 +VAL |
   1    0    0    0 =TEXT|key
   1    3    3    3 -VAL |
   1    3    3    3 -NODE|
   1    3    3    3 =SYNX|:
   1    4    4    4 =WSPC|.
   1    5    5    5 +NODE|
   1    5    5    5 +SEQ |
   1    5    5    5 =SYNX|[
   1    6    6    6 =WSPC|.
   1    7    7    7 +NODE|
   1    7    7    7 +VAL |
   1    7    7    7 =TEXT|word1
   1   12   12   12 -VAL |
   1   12   12   12 -NODE|
   1   12   12   12 =EOL |\x0a
   2    0   13   13 +COMM|
   2    0   13   13 =SYNX|#
   2    1   14   14 =META|..xxx
   2    6   19   19 -COMM|
   2    6   19   19 =EOL |\x0a
   3    0   20   20 =DENT|.
   3    1   21   21 =WSPC|.
   3    2   22   22 -SEQ |
   3    2   22   22 -NODE|
   3    2   22   22 =ERR |Unexpected.'w'
   3    2   22   22 =REST|word2.]
   3    9   29   29 =REST|\x0a
   4    0   30   30 -PAIR|
   4    0   30   30 -MAP |
   4    0   30   30 -NODE|
   4    0   30   30 -DOC |

c-libfyaml-event

 invalid_correct
stdin:3:3: error: missing comma in flow sequence
  word2 ]
  ^~~~~
+STR
+DOC
+MAP
=VAL :key
+SEQ []
=VAL :word1

c-libfyaml-json

 invalid_correct
stdin:3:3: error: missing comma in flow sequence
  word2 ]
  ^~~~~

c-libyaml-event

 invalid_correct
Parse error: did not find expected ',' or ']'
+STR
+DOC
+MAP
=VAL :key
+SEQ []
=VAL :word1

cpp-rapidyaml-event

 invalid_correct
-:3:3: (22B): ERROR: was expecting a comma
-:3:3:   word2 ]  (size=9)
         ^~~~~~~  (cols 3-10)

cpp-yamlcpp-event

 invalid_correct
Exception:
yaml-cpp: error at line 3, column 3: end of sequence flow not found
+STR
+DOC
+MAP
=VAL :key
+SEQ []
=VAL :word1

dotnet-yamldotnet-event

 invalid_correct
Unhandled exception. YamlDotNet.Core.SemanticErrorException: (Line: 3, Col: 3, Idx: 22) - (Line: 3, Col: 8, Idx: 27): While parsing a flow sequence, did not find expected ',' or ']'.
   at YamlDotNet.Core.Parser.ParseFlowSequenceEntry(Boolean isFirst)
   at YamlDotNet.Core.Parser.StateMachine()
   at YamlDotNet.Core.Parser.MoveNext()
   at YamlDotNet.RepresentationModel.LibYamlEventStream.WriteTo(TextWriter textWriter)
   at Program.Main(String[] commandLineArguments)
Aborted (core dumped)
+STR
+DOC
+MAP
=VAL :key
+SEQ
=VAL :word1

dotnet-yamldotnet-json

 invalid_correct
Unhandled exception. YamlDotNet.Core.SemanticErrorException: (Line: 3, Col: 3, Idx: 22) - (Line: 3, Col: 8, Idx: 27): While parsing a flow sequence, did not find expected ',' or ']'.
   at YamlDotNet.Core.Parser.ParseFlowSequenceEntry(Boolean isFirst)
   at YamlDotNet.Core.Parser.StateMachine()
   at YamlDotNet.Core.Parser.MoveNext()
   at YamlDotNet.Core.ParserExtensions.TryConsume[T](IParser parser, T& event)
   at YamlDotNet.Serialization.NodeDeserializers.ScalarNodeDeserializer.YamlDotNet.Serialization.INodeDeserializer.Deserialize(IParser parser, Type expectedType, Func`3 nestedObjectDeserializer, Object& value)
   at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
   at YamlDotNet.Serialization.ValueDeserializers.AliasValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
   at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.<>c__DisplayClass3_0.<DeserializeValue>b__0(IParser r, Type t)
   at YamlDotNet.Serialization.NodeDeserializers.CollectionNodeDeserializer.DeserializeHelper(Type tItem, IParser parser, Func`3 nestedObjectDeserializer, IList result, Boolean canUpdate)
   at YamlDotNet.Serialization.NodeDeserializers.CollectionNodeDeserializer.YamlDotNet.Serialization.INodeDeserializer.Deserialize(IParser parser, Type expectedType, Func`3 nestedObjectDeserializer, Object& value)
   at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
   at YamlDotNet.Serialization.ValueDeserializers.AliasValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
   at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.<>c__DisplayClass3_0.<DeserializeValue>b__0(IParser r, Type t)
   at YamlDotNet.Serialization.NodeDeserializers.DictionaryNodeDeserializer.DeserializeHelper(Type tKey, Type tValue, IParser parser, Func`3 nestedObjectDeserializer, IDictionary result)
   at YamlDotNet.Serialization.NodeDeserializers.DictionaryNodeDeserializer.YamlDotNet.Serialization.INodeDeserializer.Deserialize(IParser parser, Type expectedType, Func`3 nestedObjectDeserializer, Object& value)
   at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
   at YamlDotNet.Serialization.ValueDeserializers.AliasValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
   at YamlDotNet.Serialization.Deserializer.Deserialize(IParser parser, Type type)
   at YamlDotNet.Serialization.Deserializer.Deserialize(TextReader input, Type type)
   at YamlDotNet.Serialization.Deserializer.Deserialize(TextReader input)
   at Program.Main(String[] commandLineArguments)
Aborted (core dumped)

go-yaml-json

 invalid_correct
yaml: line 2: did not find expected ',' or ']'

hs-hsyaml-event

 invalid_correct
Parsing error near byte offset Pos {posByteOffset = 22, posCharOffset = 22, posLine = 3, posColumn = 2} (Unexpected 'w')
+STR
+DOC
+MAP
=VAL :key
+SEQ []
=VAL :word1
-SEQ

hs-hsyaml-json

 invalid_correct
hsyaml-parser: user error (Unexpected 'w')

js-jsyaml-json

 invalid_correct
/node/node_modules/js-yaml/lib/loader.js:187
  throw generateError(state, message);
  ^
YAMLException: missed comma between flow collection entries (3:3)

 1 | key: [ word1
 2 | #  xxx
 3 |   word2 ]
-------^
    at generateError (/node/node_modules/js-yaml/lib/loader.js:183:10)
    at throwError (/node/node_modules/js-yaml/lib/loader.js:187:9)
    at readFlowCollection (/node/node_modules/js-yaml/lib/loader.js:758:7)
    at composeNode (/node/node_modules/js-yaml/lib/loader.js:1442:11)
    at readBlockMapping (/node/node_modules/js-yaml/lib/loader.js:1164:11)
    at composeNode (/node/node_modules/js-yaml/lib/loader.js:1441:12)
    at readDocument (/node/node_modules/js-yaml/lib/loader.js:1625:3)
    at loadDocuments (/node/node_modules/js-yaml/lib/loader.js:1688:5)
    at Object.loadAll (/node/node_modules/js-yaml/lib/loader.js:1701:19)
    at Object.<anonymous> (/yaml/bin/js-jsyaml-json:7:13) {
  reason: 'missed comma between flow collection entries',
  mark: {
    name: null,
    buffer: 'key: [ word1\n#  xxx\n  word2 ]\n',
    position: 22,
    line: 2,
    column: 2,
    snippet: ' 1 | key: [ word1\n 2 | #  xxx\n 3 |   word2 ]\n-------^'
  }
}

Node.js v20.13.1

js-yaml-event

 invalid_correct
Missing , or : between flow sequence items at line 3, column 3:

#  xxx
  word2 ]
  ^
+STR
+DOC
+MAP
=VAL :key
+SEQ []

js-yaml-json

 invalid_correct
/yaml/bin/js-yaml-json:9
    if (doc.errors.length !== 0) throw doc.errors[0]
                                 ^

YAMLParseError: Missing , or : between flow sequence items at line 3, column 3:

#  xxx
  word2 ]
  ^

    at Composer.onError (/node/node_modules/yaml/dist/compose/composer.js:69:34)
    at Object.resolveFlowCollection (/node/node_modules/yaml/dist/compose/resolve-flow-collection.js:137:21)
    at resolveCollection (/node/node_modules/yaml/dist/compose/compose-collection.js:16:37)
    at Object.composeCollection (/node/node_modules/yaml/dist/compose/compose-collection.js:47:16)
    at composeNode (/node/node_modules/yaml/dist/compose/compose-node.js:31:38)
    at Object.resolveBlockMap (/node/node_modules/yaml/dist/compose/resolve-block-map.js:83:19)
    at resolveCollection (/node/node_modules/yaml/dist/compose/compose-collection.js:13:27)
    at Object.composeCollection (/node/node_modules/yaml/dist/compose/compose-collection.js:47:16)
    at Object.composeNode (/node/node_modules/yaml/dist/compose/compose-node.js:31:38)
    at Object.composeDoc (/node/node_modules/yaml/dist/compose/compose-doc.js:34:23) {
  code: 'MISSING_CHAR',
  pos: [ 22, 23 ],
  linePos: [ { line: 3, col: 3 }, { line: 3, col: 4 } ]
}

Node.js v20.13.1

lua-lyaml-json

 invalid_correct
luajit: 1:8: did not find expected ',' or ']'
stack traceback:
	[C]: in function 'error'
	/usr/local/share/lua/5.1/lyaml/init.lua:306: in function 'error'
	/usr/local/share/lua/5.1/lyaml/init.lua:325: in function 'parse'
	/usr/local/share/lua/5.1/lyaml/init.lua:443: in function 'load_node'
	/usr/local/share/lua/5.1/lyaml/init.lua:393: in function 'load_node'
	/usr/local/share/lua/5.1/lyaml/init.lua:378: in function 'load_node'
	/usr/local/share/lua/5.1/lyaml/init.lua:497: in function 'load'
	/yaml/bin/lua-lyaml-json:6: in main chunk
	[C]: at 0x559535ba7ed0

nim-nimyaml-event

 invalid_correct
/tmp/NimYAML-0.16.0/yaml/stream.nim(134) nimyaml_event
/tmp/NimYAML-0.16.0/yaml/stream.nim(99) next
/tmp/NimYAML-0.16.0/yaml/parser.nim(160) :anonymous
/tmp/NimYAML-0.16.0/yaml/parser.nim(470) atBlockIndentationProps
/tmp/NimYAML-0.16.0/yaml/stream.nim(106) next
[[reraised from:
/tmp/NimYAML-0.16.0/yaml/stream.nim(134) nimyaml_event
/tmp/NimYAML-0.16.0/yaml/stream.nim(101) next
]]
Error: unhandled exception: Missing ',' [YamlStreamError]
+STR
+DOC
+MAP
=VAL :key

perl-pp-event

 invalid_correct
Line      : 3
Column    : 3
Expected  : EOL FLOWSEQ_END FLOW_COMMA WS
Got       : PLAIN
Where     : /perl5/lib/perl5/YAML/PP/Parser.pm line 392
YAML      : "word2 ]"
  at /yaml/bin/perl-pp-event line 46.
+STR
+DOC
+MAP
=VAL :key
+SEQ []
=VAL :word1

perl-pp-json

 invalid_correct
Line      : 3
Column    : 3
Expected  : EOL FLOWSEQ_END FLOW_COMMA WS
Got       : PLAIN
Where     : /perl5/lib/perl5/YAML/PP/Parser.pm line 392
YAML      : "word2 ]"
  at /perl5/lib/perl5/YAML/PP/Loader.pm line 94.

perl-pp-perl

 invalid_correct
Line      : 3
Column    : 3
Expected  : EOL FLOWSEQ_END FLOW_COMMA WS
Got       : PLAIN
Where     : /perl5/lib/perl5/YAML/PP/Parser.pm line 392
YAML      : "word2 ]"
  at /perl5/lib/perl5/YAML/PP/Loader.pm line 94.

perl-pplibyaml-json

 invalid_correct
YAML::PP::LibYAML Error: The problem:

    did not find expected ',' or ']'

was found at , line: 3, column: 3
while parsing a flow sequence at line: 1, column: 6

perl-pplibyaml-perl

 invalid_correct
YAML::PP::LibYAML Error: The problem:

    did not find expected ',' or ']'

was found at , line: 3, column: 3
while parsing a flow sequence at line: 1, column: 6

perl-refparser-event

 invalid_correct
Parser finished before end of input at /perl5/lib/perl5/YAML/Parser.pm line 4056, <> line 1.

perl-syck-json

 invalid_correct
Syck parser (line 3, column 7): syntax error at /perl5/lib/perl5/x86_64-linux-thread-multi/YAML/Syck.pm line 60, <> line 1.

perl-syck-perl

 invalid_correct
Syck parser (line 3, column 7): syntax error at /perl5/lib/perl5/x86_64-linux-thread-multi/YAML/Syck.pm line 60, <> line 1.

perl-tiny-json

 invalid_correct
YAML::Tiny found bad indenting in line '  word2 ]' at /yaml/bin/perl-tiny-json line 12.

perl-tiny-perl

 invalid_correct
YAML::Tiny found bad indenting in line '  word2 ]' at /yaml/bin/perl-tiny-perl line 15.

perl-xs-json

 invalid_correct
YAML::XS::Load Error: The problem:

    did not find expected ',' or ']'

was found at document: 1, line: 3, column: 3
while parsing a flow sequence at line: 1, column: 6

perl-xs-perl

 invalid_correct
YAML::XS::Load Error: The problem:

    did not find expected ',' or ']'

was found at document: 1, line: 3, column: 3
while parsing a flow sequence at line: 1, column: 6

perl-yaml-json

 invalid_correct
YAML Error: Inconsistent indentation level
   Code: YAML_PARSE_ERR_INCONSISTENT_INDENTATION
   Line: 3
   Document: 1
 at /perl5/lib/perl5/YAML/Loader.pm line 804.

perl-yaml-perl

 invalid_correct
YAML Error: Inconsistent indentation level
   Code: YAML_PARSE_ERR_INCONSISTENT_INDENTATION
   Line: 3
   Document: 1
 at /perl5/lib/perl5/YAML/Loader.pm line 804.

py-pyyaml-event

 invalid_correct
Traceback (most recent call last):
  File "/yaml/bin/py-pyyaml-event", line 7, in <module>
    for event in yaml.parse(sys.stdin.read()):
  File "/python/lib/python3.12/site-packages/yaml/__init__.py", line 75, in parse
    while loader.check_event():
          ^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/parser.py", line 98, in check_event
    self.current_event = self.state()
                         ^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/parser.py", line 483, in parse_flow_sequence_entry
    raise ParserError("while parsing a flow sequence", self.marks[-1],
yaml.parser.ParserError: while parsing a flow sequence
  in "<unicode string>", line 1, column 6:
    key: [ word1
         ^
expected ',' or ']', but got '<scalar>'
  in "<unicode string>", line 3, column 3:
      word2 ]
      ^
+STR
+DOC
+MAP
=VAL :key
+SEQ []
=VAL :word1

py-pyyaml-json

 invalid_correct
Traceback (most recent call last):
  File "/yaml/bin/py-pyyaml-json", line 19, in <module>
    for doc in yaml.load_all(sys.stdin.read(), Loader=yaml.FullLoader):
  File "/python/lib/python3.12/site-packages/yaml/__init__.py", line 130, in load_all
    yield loader.get_data()
          ^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/constructor.py", line 45, in get_data
    return self.construct_document(self.get_node())
                                   ^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 27, in get_node
    return self.compose_document()
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 55, in compose_document
    node = self.compose_node(None, None)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 84, in compose_node
    node = self.compose_mapping_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 133, in compose_mapping_node
    item_value = self.compose_node(node, item_key)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 82, in compose_node
    node = self.compose_sequence_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 110, in compose_sequence_node
    while not self.check_event(SequenceEndEvent):
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/parser.py", line 98, in check_event
    self.current_event = self.state()
                         ^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/parser.py", line 483, in parse_flow_sequence_entry
    raise ParserError("while parsing a flow sequence", self.marks[-1],
yaml.parser.ParserError: while parsing a flow sequence
  in "<unicode string>", line 1, column 6:
    key: [ word1
         ^
expected ',' or ']', but got '<scalar>'
  in "<unicode string>", line 3, column 3:
      word2 ]
      ^

py-pyyaml-py

 invalid_correct
Traceback (most recent call last):
  File "/yaml/bin/py-pyyaml-py", line 36, in <module>
    for doc in yaml.load_all(sys.stdin.read(), Loader=yaml.FullLoader):
  File "/python/lib/python3.12/site-packages/yaml/__init__.py", line 130, in load_all
    yield loader.get_data()
          ^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/constructor.py", line 45, in get_data
    return self.construct_document(self.get_node())
                                   ^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 27, in get_node
    return self.compose_document()
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 55, in compose_document
    node = self.compose_node(None, None)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 84, in compose_node
    node = self.compose_mapping_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 133, in compose_mapping_node
    item_value = self.compose_node(node, item_key)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 82, in compose_node
    node = self.compose_sequence_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/composer.py", line 110, in compose_sequence_node
    while not self.check_event(SequenceEndEvent):
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/parser.py", line 98, in check_event
    self.current_event = self.state()
                         ^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/yaml/parser.py", line 483, in parse_flow_sequence_entry
    raise ParserError("while parsing a flow sequence", self.marks[-1],
yaml.parser.ParserError: while parsing a flow sequence
  in "<unicode string>", line 1, column 6:
    key: [ word1
         ^
expected ',' or ']', but got '<scalar>'
  in "<unicode string>", line 3, column 3:
      word2 ]
      ^

py-ruamel-event

 invalid_correct
Traceback (most recent call last):
  File "/yaml/bin/py-ruamel-event", line 9, in <module>
    for event in yaml.parse(sys.stdin.read()):
  File "/python/lib/python3.12/site-packages/ruamel/yaml/main.py", line 371, in parse
    while parser.check_event():
          ^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/parser.py", line 141, in check_event
    self.current_event = self.state()
                         ^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/parser.py", line 678, in parse_flow_sequence_entry
    raise ParserError(
ruamel.yaml.parser.ParserError: while parsing a flow sequence
  in "<unicode string>", line 1, column 6:
    key: [ word1
         ^ (line: 1)
expected ',' or ']', but got '<scalar>'
  in "<unicode string>", line 3, column 3:
      word2 ]
      ^ (line: 3)
+STR
+DOC
+MAP
=VAL :key
+SEQ []
=VAL :word1

py-ruamel-json

 invalid_correct
Traceback (most recent call last):
  File "/yaml/bin/py-ruamel-json", line 21, in <module>
    for doc in yaml.load_all(sys.stdin.read()):
  File "/python/lib/python3.12/site-packages/ruamel/yaml/main.py", line 476, in load_all
    yield constructor.get_data()
          ^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/constructor.py", line 110, in get_data
    return self.construct_document(self.composer.get_node())
                                   ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 63, in get_node
    return self.compose_document()
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 94, in compose_document
    node = self.compose_node(None, None)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 130, in compose_node
    node = self.compose_mapping_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 211, in compose_mapping_node
    item_value = self.compose_node(node, item_key)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 128, in compose_node
    node = self.compose_sequence_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 172, in compose_sequence_node
    while not self.parser.check_event(SequenceEndEvent):
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/parser.py", line 141, in check_event
    self.current_event = self.state()
                         ^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/parser.py", line 678, in parse_flow_sequence_entry
    raise ParserError(
ruamel.yaml.parser.ParserError: while parsing a flow sequence
  in "<unicode string>", line 1, column 6:
    key: [ word1
         ^ (line: 1)
expected ',' or ']', but got '<scalar>'
  in "<unicode string>", line 3, column 3:
      word2 ]
      ^ (line: 3)

py-ruamel-py

 invalid_correct
Traceback (most recent call last):
  File "/yaml/bin/py-ruamel-py", line 38, in <module>
    for doc in yaml.load_all(sys.stdin.read()):
  File "/python/lib/python3.12/site-packages/ruamel/yaml/main.py", line 476, in load_all
    yield constructor.get_data()
          ^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/constructor.py", line 110, in get_data
    return self.construct_document(self.composer.get_node())
                                   ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 63, in get_node
    return self.compose_document()
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 94, in compose_document
    node = self.compose_node(None, None)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 130, in compose_node
    node = self.compose_mapping_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 211, in compose_mapping_node
    item_value = self.compose_node(node, item_key)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 128, in compose_node
    node = self.compose_sequence_node(anchor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/composer.py", line 172, in compose_sequence_node
    while not self.parser.check_event(SequenceEndEvent):
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/parser.py", line 141, in check_event
    self.current_event = self.state()
                         ^^^^^^^^^^^^
  File "/python/lib/python3.12/site-packages/ruamel/yaml/parser.py", line 678, in parse_flow_sequence_entry
    raise ParserError(
ruamel.yaml.parser.ParserError: while parsing a flow sequence
  in "<unicode string>", line 1, column 6:
    key: [ word1
         ^ (line: 1)
expected ',' or ']', but got '<scalar>'
  in "<unicode string>", line 3, column 3:
      word2 ]
      ^ (line: 3)

ruby-psych-json

 invalid_correct
/ruby/gems/psych/lib/psych.rb:458:in `parse': (<unknown>): did not find expected ',' or ']' while parsing a flow sequence at line 1 column 6 (Psych::SyntaxError)
	from /ruby/gems/psych/lib/psych.rb:458:in `parse_stream'
	from /ruby/gems/psych/lib/psych.rb:632:in `load_stream'
	from /yaml/bin/ruby-psych-json:6:in `<main>'

rust-yamlrust-event

 invalid_correct
Error: ScanError { mark: Marker { index: 22, line: 3, col: 2 }, info: "while parsing a flow sequence, expected ',' or ']'" }
+STR
+DOC
+MAP
=VAL :key
+SEQ
=VAL :word1