Dot notation with single quotes

Setup

Selector: $.'key'

{
  "key": "value",
  "'key'": 42
}

Results

Other responses

Bash (JSONPath.sh) 

[
  "value"
]

C (json-glib) 

[
  42
]

Clojure (json-path) ¹ 

"value"

Cpp (jsoncons) 

[
  "value"
]

Dart (json_path)

Not supported

FormatException: end of input expected at 1:2. Expression: $.'key'

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-AsaiYusuke-jsonpath) ²

Not supported

invalid syntax (position=1, reason=unrecognized input, near=.'key')

Golang (github.com-PaesslerAG-jsonpath) ¹

Not supported

parsing error: $.'key'	:1:3 - 1:8 unexpected Char while scanning JSON select expected Ident, "." or "*"

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

"value"

Golang (github.com-ohler55-ojg)

Not supported

Golang (github.com-oliveagle-jsonpath) ¹ 

42

Golang (github.com-spyzhov-ajson) 

[
  "value"
]

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

[
  42
]

Haskell (jsonpath)

Not supported

Invalid JSONPath: $.'key'
 Error: 1:3:
  |
1 | $.'key'
  |   ^
unexpected '''
expecting '.' or white space

JavaScript (Goessner) ² 

[
  "value"
]

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) 

[
  "value"
]

Java (com.github.jsurfer)

Not supported

line 1:2 no viable alternative at input '.'key''
org.antlr.v4.runtime.misc.ParseCancellationException

Java (com.jayway.jsonpath) ¹ ³ 

42

Kotlin (com.nfeld.jsonpathkt) ¹ 

42

Objective-C (SMJJSONPath) ¹ ³ 

42

PHP (Goessner) ² 

[
  "value"
]

PHP (galbar-jsonpath) ²

Not supported

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

PHP (remorhaz-jsonpath) 

[
  "value"
]

PHP (softcreatr-jsonpath) 

[
  "value"
]

Perl (JSON-Path) 

[
  "value"
]

Python (jsonpath) ² 

[
  "value"
]

Python (jsonpath-ng) 

[
  "value"
]

Python (jsonpath-rw) 

[
  "value"
]

Python (jsonpath2)

Not supported

line 1:2 token recognition error at: '''
ValueError("line 1:2 token recognition error at: '''")

Raku (JSON-Path)

Not supported

JSON path parse error at position 1

Ruby (jsonpath) 

[
  "value"
]

Rust (jsonpath)

Not supported

parsing error

Rust (jsonpath_lib)

Not supported

path error: 
$.'key'
^^

Scala (jsonpath) 

[
  42
]

Swift (Sextant) 

[
  42
]

dotNET (Json.NET) 

[
  42
]

dotNET (JsonCons.JsonPath) 

[
  "value"
]

dotNET (JsonPath.Net)

Not supported

Could not find any valid selectors.

dotNET (JsonPathLib) 

[
  "value"
]

dotNET (Manatee.Json) 

[
  "value"
]

JSON (Path_Reference_Implementation)

Not supported

 --> 1:3
  |
1 | $.'key'
  |   ^---
  |
  = expected childName

Proposal (A)

Not supported


x 1:3-1:3 DotChildName
| $.'key'
|   ^
x 1:2-1:2 DotChild
| $.'key'
|  ^
x 1:2-1:2 Operator
| $.'key'
|  ^
o 1:1-1:2 Start
  $.'key'
  ^

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}

Rust (jsonpath_plus) 

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

Footnotes