# YAML Test Matrix

--- &test-HRE5
  Title: Double quoted scalar with escaped single quote
  Tags: [ double, error, single ]

YAML

---
double: "quoted \' scalar"

Expected Events

+STR
+DOC ---
+MAP
=VAL :double

Expected JSON



cpp-yamlcpp-event

 invalid_incorrect
+STR
+DOC
+MAP
=VAL :double
=VAL :quoted ' scalar
-MAP
-DOC
-STR

dotnet-yamldotnet-event

 invalid_incorrect
+STR
+DOC ---
+MAP
=VAL :double
=VAL "quoted ' scalar
-MAP
-DOC
-STR

dotnet-yamldotnet-json

 invalid_incorrect
{"double": "quoted ' scalar"}

perl-syck-json

 invalid_incorrect
{
   "double" : "quoted \\' scalar"
}

perl-syck-perl

 invalid_incorrect
{
  'double' => 'quoted \\\' scalar'
}

perl-tiny-json

 invalid_incorrect
{
   "double" : "quoted \\' scalar"
}

perl-tiny-perl

 invalid_incorrect
{
  'double' => 'quoted \\\' scalar'
}

perl-yaml-json

 invalid_incorrect
{
   "double" : "quoted \\' scalar"
}

perl-yaml-perl

 invalid_incorrect
{
  'double' => 'quoted \\\' scalar'
}

c-libfyaml-event

 invalid_correct
stdin:2:17: error: invalid escape '\'' in double-quoted string
double: "quoted \' scalar"
                ^~
+STR
+DOC ---
+MAP
=VAL :double

c-libfyaml-json

 invalid_correct
stdin:2:17: error: invalid escape '\'' in double-quoted string
double: "quoted \' scalar"
                ^~

c-libyaml-event

 invalid_correct
Parse error: found unknown escape character
+STR
+DOC ---
+MAP
=VAL :double

hs-hsyaml-event

 invalid_correct
Parsing error near byte offset Pos {posByteOffset = 20, posCharOffset = 20, posLine = 2, posColumn = 16} (Unexpected '\')
+STR
+DOC ---
+MAP
=VAL :double
=VAL "quoted 

hs-hsyaml-json

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

java-snakeyaml-event

 invalid_correct
Exception in thread "main" while scanning a double-quoted scalar
 in 'reader', line 2, column 9:
    double: "quoted \' scalar"
            ^
found unknown escape character '(39)
 in 'reader', line 2, column 18:
    double: "quoted \' scalar"
                     ^

	at org.yaml.snakeyaml.scanner.ScannerImpl.scanFlowScalarNonSpaces(ScannerImpl.java:1895)
	at org.yaml.snakeyaml.scanner.ScannerImpl.scanFlowScalar(ScannerImpl.java:1832)
	at org.yaml.snakeyaml.scanner.ScannerImpl.fetchFlowScalar(ScannerImpl.java:1027)
	at org.yaml.snakeyaml.scanner.ScannerImpl.fetchDouble(ScannerImpl.java:1009)
	at org.yaml.snakeyaml.scanner.ScannerImpl.fetchMoreTokens(ScannerImpl.java:394)
	at org.yaml.snakeyaml.scanner.ScannerImpl.checkToken(ScannerImpl.java:227)
	at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockMappingValue.produce(ParserImpl.java:586)
	at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:158)
	at org.yaml.snakeyaml.Yaml$3.hasNext(Yaml.java:654)
	at org.yaml.editor.Snake2Events.yamlToEvents(Snake2Events.java:111)
	at org.yaml.editor.Snake2Events.main(Snake2Events.java:119)

java-snakeyaml-json

 invalid_correct
Exception in thread "main" while scanning a double-quoted scalar
 in 'reader', line 2, column 9:
    double: "quoted \' scalar"
            ^
found unknown escape character '(39)
 in 'reader', line 2, column 18:
    double: "quoted \' scalar"
                     ^

	at org.yaml.snakeyaml.scanner.ScannerImpl.scanFlowScalarNonSpaces(ScannerImpl.java:1895)
	at org.yaml.snakeyaml.scanner.ScannerImpl.scanFlowScalar(ScannerImpl.java:1832)
	at org.yaml.snakeyaml.scanner.ScannerImpl.fetchFlowScalar(ScannerImpl.java:1027)
	at org.yaml.snakeyaml.scanner.ScannerImpl.fetchDouble(ScannerImpl.java:1009)
	at org.yaml.snakeyaml.scanner.ScannerImpl.fetchMoreTokens(ScannerImpl.java:394)
	at org.yaml.snakeyaml.scanner.ScannerImpl.checkToken(ScannerImpl.java:227)
	at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockMappingValue.produce(ParserImpl.java:586)
	at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:158)
	at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:148)
	at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:136)
	at org.yaml.snakeyaml.composer.Composer.composeValueNode(Composer.java:257)
	at org.yaml.snakeyaml.composer.Composer.composeMappingChildren(Composer.java:248)
	at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:236)
	at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:162)
	at org.yaml.snakeyaml.composer.Composer.getNode(Composer.java:95)
	at org.yaml.snakeyaml.constructor.BaseConstructor.getData(BaseConstructor.java:134)
	at org.yaml.snakeyaml.Yaml$1.next(Yaml.java:494)
	at org.yaml.editor.Snake2Json.yamlToJson(Snake2Json.java:18)
	at org.yaml.editor.Snake2Json.main(Snake2Json.java:25)

js-jsyaml-json

 invalid_correct
/node/node_modules/js-yaml/lib/js-yaml/loader.js:173
  throw generateError(state, message);
  ^
YAMLException: unknown escape sequence at line 2, column 18:
    double: "quoted \' scalar"
                     ^
    at generateError (/node/node_modules/js-yaml/lib/js-yaml/loader.js:167:10)
    at throwError (/node/node_modules/js-yaml/lib/js-yaml/loader.js:173:9)
    at readDoubleQuotedScalar (/node/node_modules/js-yaml/lib/js-yaml/loader.js:646:9)
    at composeNode (/node/node_modules/js-yaml/lib/js-yaml/loader.js:1365:13)
    at readBlockMapping (/node/node_modules/js-yaml/lib/js-yaml/loader.js:1089:11)
    at composeNode (/node/node_modules/js-yaml/lib/js-yaml/loader.js:1359:12)
    at readDocument (/node/node_modules/js-yaml/lib/js-yaml/loader.js:1519:3)
    at loadDocuments (/node/node_modules/js-yaml/lib/js-yaml/loader.js:1575:5)
    at Object.loadAll (/node/node_modules/js-yaml/lib/js-yaml/loader.js:1583:19)
    at Object.<anonymous> (/yaml/bin/js-jsyaml-json:7:13)

js-yaml-event

 invalid_correct
Invalid escape sequence \'
+STR
+DOC ---
+MAP
=VAL :double

js-yaml-json

 invalid_correct
/yaml/bin/js-yaml-json:8
  if (doc.errors.length !== 0) throw doc.errors[0]
                               ^

YAMLSyntaxError: Invalid escape sequence \'
    at QuoteDouble.get strValue [as strValue] (/node/node_modules/yaml/dist/parse-cst.js:1327:25)
    at Object.resolveString [as resolve] (/node/node_modules/yaml/dist/resolveSeq-4a68b39b.js:1282:20)
    at resolveByTagName (/node/node_modules/yaml/dist/resolveSeq-4a68b39b.js:1384:25)
    at resolveTag (/node/node_modules/yaml/dist/resolveSeq-4a68b39b.js:1414:17)
    at resolveNodeValue (/node/node_modules/yaml/dist/resolveSeq-4a68b39b.js:1535:23)
    at resolveNode (/node/node_modules/yaml/dist/resolveSeq-4a68b39b.js:1583:15)
    at resolveBlockMapItems (/node/node_modules/yaml/dist/resolveSeq-4a68b39b.js:1777:38)
    at Object.resolveMap [as resolve] (/node/node_modules/yaml/dist/resolveSeq-4a68b39b.js:1612:79)
    at resolveByTagName (/node/node_modules/yaml/dist/resolveSeq-4a68b39b.js:1384:25)
    at resolveTag (/node/node_modules/yaml/dist/resolveSeq-4a68b39b.js:1414:17)

lua-lyaml-json

 invalid_correct
luajit: 2:1: found unknown escape character
stack traceback:
	[C]: in function 'error'
	/usr/local/share/lua/5.1/lyaml/init.lua:291: in function 'error'
	/usr/local/share/lua/5.1/lyaml/init.lua:310: in function 'parse'
	/usr/local/share/lua/5.1/lyaml/init.lua:428: in function 'load_node'
	/usr/local/share/lua/5.1/lyaml/init.lua:363: in function 'load_node'
	/usr/local/share/lua/5.1/lyaml/init.lua:482: in function 'load'
	/yaml/bin/lua-lyaml-json:6: in main chunk
	[C]: at 0x55aee8602f97

nim-nimyaml-event

 invalid_correct
/buildutils/nimyaml_event.nim(8) nimyaml_event
/tmp/NimYAML-0.13.1/yaml/stream.nim(223) finished
Error: unhandled exception: Illegal character in escape sequence [YamlStreamError]
+STR
+DOC ---
+MAP
=VAL :double

perl-pp-event

 invalid_correct
Line      : 2
Column    : 17
Message   : Invalid quoted <"> string
Where     : /perl5/lib/perl5/YAML/PP/Lexer.pm line 732
YAML      : "\\' scalar\""
  at /yaml/bin/perl-pp-event line 25.
+STR
+DOC ---
+MAP
=VAL :double

perl-pp-json

 invalid_correct
Line      : 2
Column    : 17
Message   : Invalid quoted <"> string
Where     : /perl5/lib/perl5/YAML/PP/Lexer.pm line 732
YAML      : "\\' scalar\""
  at /perl5/lib/perl5/YAML/PP/Loader.pm line 92.

perl-pp-perl

 invalid_correct
Line      : 2
Column    : 17
Message   : Invalid quoted <"> string
Where     : /perl5/lib/perl5/YAML/PP/Lexer.pm line 732
YAML      : "\\' scalar\""
  at /perl5/lib/perl5/YAML/PP/Loader.pm line 92.

perl-pplibyaml-event

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

    found unknown escape character

was found at , line: 2, column: 17
while parsing a quoted scalar at line: 2, column: 9

perl-pplibyaml-json

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

    found unknown escape character

was found at , line: 2, column: 17
while parsing a quoted scalar at line: 2, column: 9

perl-pplibyaml-perl

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

    found unknown escape character

was found at , line: 2, column: 17
while parsing a quoted scalar at line: 2, column: 9

perl-xs-json

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

    found unknown escape character

was found at document: 1, line: 2, column: 17
while parsing a quoted scalar at line: 2, column: 9

perl-xs-perl

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

    found unknown escape character

was found at document: 1, line: 2, column: 17
while parsing a quoted scalar at line: 2, column: 9

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/python3.7/site-packages/yaml/__init__.py", line 75, in parse
    while loader.check_event():
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 98, in check_event
    self.current_event = self.state()
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 449, in parse_block_mapping_value
    if not self.check_token(KeyToken, ValueToken, BlockEndToken):
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 116, in check_token
    self.fetch_more_tokens()
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 251, in fetch_more_tokens
    return self.fetch_double()
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 655, in fetch_double
    self.fetch_flow_scalar(style='"')
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 666, in fetch_flow_scalar
    self.tokens.append(self.scan_flow_scalar(style))
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 1152, in scan_flow_scalar
    chunks.extend(self.scan_flow_scalar_non_spaces(double, start_mark))
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 1224, in scan_flow_scalar_non_spaces
    "found unknown escape character %r" % ch, self.get_mark())
yaml.scanner.ScannerError: while scanning a double-quoted scalar
  in "<unicode string>", line 2, column 9:
    double: "quoted \' scalar"
            ^
found unknown escape character "'"
  in "<unicode string>", line 2, column 18:
    double: "quoted \' scalar"
                     ^
+STR
+DOC ---
+MAP
=VAL :double

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/python3.7/site-packages/yaml/__init__.py", line 130, in load_all
    yield loader.get_data()
  File "/python/lib/python3.7/site-packages/yaml/constructor.py", line 45, in get_data
    return self.construct_document(self.get_node())
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 27, in get_node
    return self.compose_document()
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 55, in compose_document
    node = self.compose_node(None, None)
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 84, in compose_node
    node = self.compose_mapping_node(anchor)
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 133, in compose_mapping_node
    item_value = self.compose_node(node, item_key)
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 64, in compose_node
    if self.check_event(AliasEvent):
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 98, in check_event
    self.current_event = self.state()
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 449, in parse_block_mapping_value
    if not self.check_token(KeyToken, ValueToken, BlockEndToken):
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 116, in check_token
    self.fetch_more_tokens()
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 251, in fetch_more_tokens
    return self.fetch_double()
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 655, in fetch_double
    self.fetch_flow_scalar(style='"')
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 666, in fetch_flow_scalar
    self.tokens.append(self.scan_flow_scalar(style))
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 1152, in scan_flow_scalar
    chunks.extend(self.scan_flow_scalar_non_spaces(double, start_mark))
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 1224, in scan_flow_scalar_non_spaces
    "found unknown escape character %r" % ch, self.get_mark())
yaml.scanner.ScannerError: while scanning a double-quoted scalar
  in "<unicode string>", line 2, column 9:
    double: "quoted \' scalar"
            ^
found unknown escape character "'"
  in "<unicode string>", line 2, column 18:
    double: "quoted \' scalar"
                     ^

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/python3.7/site-packages/yaml/__init__.py", line 130, in load_all
    yield loader.get_data()
  File "/python/lib/python3.7/site-packages/yaml/constructor.py", line 45, in get_data
    return self.construct_document(self.get_node())
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 27, in get_node
    return self.compose_document()
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 55, in compose_document
    node = self.compose_node(None, None)
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 84, in compose_node
    node = self.compose_mapping_node(anchor)
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 133, in compose_mapping_node
    item_value = self.compose_node(node, item_key)
  File "/python/lib/python3.7/site-packages/yaml/composer.py", line 64, in compose_node
    if self.check_event(AliasEvent):
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 98, in check_event
    self.current_event = self.state()
  File "/python/lib/python3.7/site-packages/yaml/parser.py", line 449, in parse_block_mapping_value
    if not self.check_token(KeyToken, ValueToken, BlockEndToken):
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 116, in check_token
    self.fetch_more_tokens()
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 251, in fetch_more_tokens
    return self.fetch_double()
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 655, in fetch_double
    self.fetch_flow_scalar(style='"')
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 666, in fetch_flow_scalar
    self.tokens.append(self.scan_flow_scalar(style))
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 1152, in scan_flow_scalar
    chunks.extend(self.scan_flow_scalar_non_spaces(double, start_mark))
  File "/python/lib/python3.7/site-packages/yaml/scanner.py", line 1224, in scan_flow_scalar_non_spaces
    "found unknown escape character %r" % ch, self.get_mark())
yaml.scanner.ScannerError: while scanning a double-quoted scalar
  in "<unicode string>", line 2, column 9:
    double: "quoted \' scalar"
            ^
found unknown escape character "'"
  in "<unicode string>", line 2, column 18:
    double: "quoted \' scalar"
                     ^

py-ruamel-event

 invalid_correct
Traceback (most recent call last):
  File "/yaml/bin/py-ruamel-event", line 7, in <module>
    for event in ruamel.yaml.parse(sys.stdin.read()):
  File "/python/lib/python3.7/site-packages/ruamel/yaml/main.py", line 907, in parse
    while loader._parser.check_event():
  File "/python/lib/python3.7/site-packages/ruamel/yaml/parser.py", line 140, in check_event
    self.current_event = self.state()
  File "/python/lib/python3.7/site-packages/ruamel/yaml/parser.py", line 603, in parse_block_mapping_value
    if self.scanner.check_token(ValueToken):
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 170, in check_token
    self.fetch_more_tokens()
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 311, in fetch_more_tokens
    return self.fetch_double()
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 729, in fetch_double
    self.fetch_flow_scalar(style='"')
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 738, in fetch_flow_scalar
    self.tokens.append(self.scan_flow_scalar(style))
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 1383, in scan_flow_scalar
    chunks.extend(self.scan_flow_scalar_non_spaces(double, start_mark))
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 1460, in scan_flow_scalar_non_spaces
    self.reader.get_mark(),
ruamel.yaml.scanner.ScannerError: while scanning a double-quoted scalar
  in "<unicode string>", line 2, column 9:
    double: "quoted \' scalar"
            ^ (line: 2)
found unknown escape character "'"
  in "<unicode string>", line 2, column 18:
    double: "quoted \' scalar"
                     ^ (line: 2)
+STR
+DOC ---
+MAP
=VAL :double

py-ruamel-json

 invalid_correct
Traceback (most recent call last):
  File "/yaml/bin/py-ruamel-json", line 19, in <module>
    for doc in ruamel.yaml.load_all(sys.stdin.read(), Loader=ruamel.yaml.Loader):
  File "/python/lib/python3.7/site-packages/ruamel/yaml/main.py", line 976, in load_all
    yield loader._constructor.get_data()
  File "/python/lib/python3.7/site-packages/ruamel/yaml/constructor.py", line 106, in get_data
    return self.construct_document(self.composer.get_node())
  File "/python/lib/python3.7/site-packages/ruamel/yaml/composer.py", line 68, in get_node
    return self.compose_document()
  File "/python/lib/python3.7/site-packages/ruamel/yaml/composer.py", line 101, in compose_document
    node = self.compose_node(None, None)
  File "/python/lib/python3.7/site-packages/ruamel/yaml/composer.py", line 138, in compose_node
    node = self.compose_mapping_node(anchor)
  File "/python/lib/python3.7/site-packages/ruamel/yaml/composer.py", line 218, in compose_mapping_node
    item_value = self.compose_node(node, item_key)
  File "/python/lib/python3.7/site-packages/ruamel/yaml/composer.py", line 111, in compose_node
    if self.parser.check_event(AliasEvent):
  File "/python/lib/python3.7/site-packages/ruamel/yaml/parser.py", line 140, in check_event
    self.current_event = self.state()
  File "/python/lib/python3.7/site-packages/ruamel/yaml/parser.py", line 603, in parse_block_mapping_value
    if self.scanner.check_token(ValueToken):
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 170, in check_token
    self.fetch_more_tokens()
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 311, in fetch_more_tokens
    return self.fetch_double()
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 729, in fetch_double
    self.fetch_flow_scalar(style='"')
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 738, in fetch_flow_scalar
    self.tokens.append(self.scan_flow_scalar(style))
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 1383, in scan_flow_scalar
    chunks.extend(self.scan_flow_scalar_non_spaces(double, start_mark))
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 1460, in scan_flow_scalar_non_spaces
    self.reader.get_mark(),
ruamel.yaml.scanner.ScannerError: while scanning a double-quoted scalar
  in "<unicode string>", line 2, column 9:
    double: "quoted \' scalar"
            ^ (line: 2)
found unknown escape character "'"
  in "<unicode string>", line 2, column 18:
    double: "quoted \' scalar"
                     ^ (line: 2)

py-ruamel-py

 invalid_correct
Traceback (most recent call last):
  File "/yaml/bin/py-ruamel-py", line 36, in <module>
    for doc in ruamel.yaml.load_all(sys.stdin.read(), Loader=ruamel.yaml.Loader):
  File "/python/lib/python3.7/site-packages/ruamel/yaml/main.py", line 976, in load_all
    yield loader._constructor.get_data()
  File "/python/lib/python3.7/site-packages/ruamel/yaml/constructor.py", line 106, in get_data
    return self.construct_document(self.composer.get_node())
  File "/python/lib/python3.7/site-packages/ruamel/yaml/composer.py", line 68, in get_node
    return self.compose_document()
  File "/python/lib/python3.7/site-packages/ruamel/yaml/composer.py", line 101, in compose_document
    node = self.compose_node(None, None)
  File "/python/lib/python3.7/site-packages/ruamel/yaml/composer.py", line 138, in compose_node
    node = self.compose_mapping_node(anchor)
  File "/python/lib/python3.7/site-packages/ruamel/yaml/composer.py", line 218, in compose_mapping_node
    item_value = self.compose_node(node, item_key)
  File "/python/lib/python3.7/site-packages/ruamel/yaml/composer.py", line 111, in compose_node
    if self.parser.check_event(AliasEvent):
  File "/python/lib/python3.7/site-packages/ruamel/yaml/parser.py", line 140, in check_event
    self.current_event = self.state()
  File "/python/lib/python3.7/site-packages/ruamel/yaml/parser.py", line 603, in parse_block_mapping_value
    if self.scanner.check_token(ValueToken):
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 170, in check_token
    self.fetch_more_tokens()
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 311, in fetch_more_tokens
    return self.fetch_double()
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 729, in fetch_double
    self.fetch_flow_scalar(style='"')
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 738, in fetch_flow_scalar
    self.tokens.append(self.scan_flow_scalar(style))
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 1383, in scan_flow_scalar
    chunks.extend(self.scan_flow_scalar_non_spaces(double, start_mark))
  File "/python/lib/python3.7/site-packages/ruamel/yaml/scanner.py", line 1460, in scan_flow_scalar_non_spaces
    self.reader.get_mark(),
ruamel.yaml.scanner.ScannerError: while scanning a double-quoted scalar
  in "<unicode string>", line 2, column 9:
    double: "quoted \' scalar"
            ^ (line: 2)
found unknown escape character "'"
  in "<unicode string>", line 2, column 18:
    double: "quoted \' scalar"
                     ^ (line: 2)

ruby-psych-json

 invalid_correct
/usr/lib/ruby/2.5.0/psych.rb:405:in `parse': (<unknown>): found unknown escape character while parsing a quoted scalar at line 2 column 9 (Psych::SyntaxError)
	from /usr/lib/ruby/2.5.0/psych.rb:405:in `parse_stream'
	from /usr/lib/ruby/2.5.0/psych.rb:488:in `load_stream'
	from /yaml/bin/ruby-psych-json:6:in `<main>'