Dot notation with single quotes after recursive descent

Setup

Selector: $..'key'

{
  "object": {
    "key": "value",
    "'key'": 100,
    "array": [
      {"key": "something", "'key'": 0},
      {"key": {"key": "russian dolls"}, "'key'": {"'key'": 99}}
    ]
  },
  "key": "top",
  "'key'": 42
}

Results

Other responses

Bash (JSONPath.sh) 

[
  "russian dolls",
  "something",
  "top",
  "value"
]

C (json-glib) 

[
  0,
  100,
  42,
  {
    "'key'": 99
  }
]

Clojure (json-path) ¹ 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

Cpp (jsoncons) 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

Dart (json_path)

Not supported

Instance of 'ParserException': end of input expected (at 1:2)

Elixir (ExJsonPath)

Not supported

syntax error before: {string,1,<<"key">>}

Elixir (jaxon) 

[
  42
]

Elixir (warpath) ¹

Not supported

Parser error: Invalid token on line 1, syntax error before: <<"key">>

Golang (github.com-PaesslerAG-jsonpath) ¹

Not supported

parsing error: $..'key'	:1:4 - 1:9 unexpected Char while scanning JSON mapper expected "[", Ident or "*"

Golang (github.com-bhmj-jsonslice) ¹ ³ 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

Golang (github.com-ohler55-ojg)

Not supported

Golang (github.com-spyzhov-ajson) 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

Golang (github.com-theory-jsonpath)

Not supported

jsonpath: unexpected string at position 4

Golang (github.com-vmware-labs-yaml-jsonpath) 

[
  0,
  100,
  42,
  99,
  {
    "'key'": 99
  }
]

Haskell (jsonpath)

Not supported

Invalid JSONPath: $..'key'
 Error: 1:4:
  |
1 | $..'key'
  |    ^
unexpected '''
expecting '.', '[', or white space

JavaScript (Goessner) ² 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

JavaScript (brunerd)

Not supported

JavaScript (jsonpath)

Not supported

Parse error on line 1:
$..'key'
---^
Expecting 'STAR', 'IDENTIFIER', 'SCRIPT_EXPRESSION', 'INTEGER', 'END', '[', got 'Q_STRING'

JavaScript (jsonpath-plus) 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

JavaScript (jsonpathly)

Not supported

mismatched input ''key'' expecting {'*', 'true', 'false', 'null', '[', KEY, SPECIAL_KEY}

Java (com.github.jsurfer)

Not supported

org.antlr.v4.runtime.misc.ParseCancellationException

Java (com.github.xmljacquard.ajp)

Not supported

Error at char 18 in expression in xsl:sequence/@select on line 20 column 67 of ajp-runner.xslt:
   <failed xmlns:ixml="http://invisiblexml.org/NS"
  ixml:state="failed"><line>1</line><column>4</column><pos>4</pos><unexpected>'</unexpected><permitted>'*', '[', '_', [#80-'퟿[xd7ff]'], ['A'-'Z'; 'a'-'z'], ['𐀀[x10000]'-'􏿯[x10ffef]'], ['[xe000]'-'￯[xffef]']</permitted><could-be-next><in rule="bracketed-selection"><tokens>'['</tokens></in><in rule="ALPHA"><tokens>['A'-'Z'; 'a'-'z']</tokens></in><in rule="wildcard-selector"><tokens>'*'</tokens></in><in rule="name-first"><tokens>'_', [#80-'퟿[xd7ff]'], ['𐀀[x10000]'-'􏿯[x10ffef]'], ['[xe000]'-'￯[xffef]']</tokens></in></could-be-next><unfinished><open rule="descendant-segment" start="2" end="3"><input>..</input></open><open rule="child-segment" start="2" end="2"><input>.</input></open><open rule="jsonpath-query" start="1" end="1"><input>$</input></open></unfinished></failed>
During lazy evaluation of tailCallLoop(ajp:getProcessor(...)) on line 20 of jar:file:./implementations/Java_com.github.xmljacquard.ajp/build/deps/org/xmljacquard/ajp/0.0.7/ajp-0.0.7.jar!/xslt/ajp-runner.xslt
In function ajpr:getProcessor on line 17 column 106 of ajp-runner.xslt:
net.sf.saxon.s9api.SaxonApiException: <failed xmlns:ixml="http://invisiblexml.org/NS" ixml:state="failed"><line>1</line><column>4</column><pos>4</pos><unexpected>'</unexpected><permitted>'*', '[', '_', [#80-'퟿'], ['A'-'Z'; 'a'-'z'], ['𐀀'-'􏿯'], [''-'￯']</permitted><could-be-next><in rule="bracketed-selection"><tokens>'['</tokens></in><in rule="ALPHA"><tokens>['A'-'Z'; 'a'-'z']</tokens></in><in rule="wildcard-selector"><tokens>'*'</tokens></in><in rule="name-first"><tokens>'_', [#80-'퟿'], ['𐀀'-'􏿯'], [''-'￯']</tokens></in></could-be-next><unfinished><open rule="descendant-segment" start="2" end="3"><input>..</input></open><open rule="child-segment" start="2" end="2"><input>.</input></open><open rule="jsonpath-query" start="1" end="1"><input>$</input></open></unfinished></failed>

Java (com.jayway.jsonpath) ¹ ³ 

[
  0,
  100,
  42,
  99,
  {
    "'key'": 99
  }
]

Kotlin (com.nfeld.jsonpathkt) ¹ 

[
  0,
  100,
  42,
  99,
  {
    "'key'": 99
  }
]

Objective-C (SMJJSONPath) ¹ ³ 

[
  0,
  100,
  42,
  99,
  {
    "'key'": 99
  }
]

PHP (Goessner) ² 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

PHP (galbar-jsonpath)

Not supported

Invalid JSONPath error: 'Error in JSONPath near '.'key'''

PHP (remorhaz-jsonpath) 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

PHP (softcreatr-jsonpath) 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

Perl (JSON-Path) 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

Python (jsonpath) ² 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

Python (jsonpath-ng) 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

Python (jsonpath-rw) 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

Python (jsonpath2)

Not supported

line 1:3 token recognition error at: '''
ValueError("line 1:3 token recognition error at: '''")

Python (python-jsonpath)

Not supported

JSONPathSyntaxError('expected a shorthand selector')

Raku (JSON-Path)

Not supported

JSON path parse error at position 3

Ruby (jsonpath) 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

Rust (jsonpath)

Not supported

parsing error

Rust (jsonpath_lib)

Not supported

path error: 
$..'key'
^^^^^^^^

Rust (serde_json_path)

Not supported

at position 3, must start with lowercase alpha or '_'

Scala (jsonpath) 

[
  0,
  100,
  42,
  {
    "'key'": 99
  }
]

Swift (Sextant) 

[
  0,
  100,
  42,
  99,
  {
    "'key'": 99
  }
]

dotNET (Json.NET) 

[
  0,
  100,
  42,
  99,
  {
    "'key'": 99
  }
]

dotNET (JsonCons.JsonPath) 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

dotNET (JsonPath.Net)

Not supported

Could not find any valid selectors.

dotNET (JsonPathLib) 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

dotNET (Manatee.Json) 

[
  "russian dolls",
  "something",
  "top",
  "value",
  {
    "key": "russian dolls"
  }
]

Errors

Erlang (ejsonpath) 

init terminating in do_boot (function_clause)

Crash dump is being written to: /dev/null...done
{"init terminating in do_boot",function_clause}

Golang (github.com-oliveagle-jsonpath) ¹ 

expression don't support in filter

JavaScript (json-p3) 

unexpected descendent selection token ''' ('$..'key'':3)

Rust (jsonpath_plus) 

Error Parsing JSON Path:
$..'key'
panic occurred

Footnotes