Filter expression with equals string with unicode character escape

Setup

Selector: $[?(@.key=="Mot\u00f6rhead")]

[
  {"key": "something"},
  {"key": "Mot\u00f6rhead"},
  {"key": "mot\u00f6rhead"},
  {"key": "Motorhead"},
  {"key": "Motoo\u0308rhead"},
  {"key": "motoo\u0308rhead"}
]

Results

Other responses

Bash (JSONPath.sh)

[]

C (json-glib)

Not supported

Unable to compile selector `$[?(@.key=="Mot\u00f6rhead")]': Invalid array index definition “?(@.key=="Mot\u00f6rhead")]”

Clojure (json-path) ¹

[]

Cpp (jsoncons)

[
  {
    "key": "Mot\u00f6rhead"
  }
]

Dart (json_path)

[
  {
    "key": "Mot\u00f6rhead"
  }
]

Elixir (ExJsonPath)

[]

Elixir (jaxon)

[]

Elixir (warpath) ¹

[]

Erlang (ejsonpath)

[]

Golang (github.com-PaesslerAG-jsonpath) ¹

[
  {
    "key": "Mot\u00f6rhead"
  }
]

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

[
  {
    "key": "Mot\u00f6rhead"
  }
]

Golang (github.com-ohler55-ojg)

[]

Golang (github.com-oliveagle-jsonpath) ¹

[]

Golang (github.com-spyzhov-ajson)

[
  {
    "key": "Mot\u00f6rhead"
  }
]

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

[]

Haskell (jsonpath)

Not supported

Invalid JSONPath: $[?(@.key=="Mot\u00f6rhead")]
 Error: 1:16:
  |
1 | $[?(@.key=="Mot\u00f6rhead")]
  |                ^
unexpected '\'
expecting '!', '"', literal character, or white space

JavaScript (Goessner) ²

[
  {
    "key": "Mot\u00f6rhead"
  }
]

JavaScript (brunerd)

[
  {
    "key": "Mot\u00f6rhead"
  }
]

JavaScript (jsonpath)

[
  {
    "key": "Mot\u00f6rhead"
  }
]

JavaScript (jsonpath-plus)

[
  {
    "key": "Mot\u00f6rhead"
  }
]

Java (com.github.jsurfer)

[]

Java (com.jayway.jsonpath) ¹ ³

[
  {
    "key": "Mot\u00f6rhead"
  }
]

Kotlin (com.nfeld.jsonpathkt) ¹

Not supported

Unexpected char, char=?, index=2

Objective-C (SMJJSONPath) ¹ ³

[]

PHP (galbar-jsonpath) ²

Not found

jsonpath returned false, this might indicate an error

PHP (remorhaz-jsonpath)

Not supported

Error: 'Failed to build AST from JSONPath query: $[?(@.key=="Mot\u00f6rhead")]'

PHP (softcreatr-jsonpath)

[]

Python (jsonpath) ²

[
  {
    "key": "Mot\u00f6rhead"
  }
]

Python (jsonpath-ng)

Not supported

JsonPathLexerError('Error on line 1, col 2: Unexpected character: ? ')

Python (jsonpath-rw)

Not supported

JsonPathLexerError('Error on line 1, col 2: Unexpected character: ? ')

Python (jsonpath2)

Not supported

line 1:10 extraneous input '=' expecting {'@', '$', 'true', 'false', 'null', '{', '[', STRING, NUMBER}
ValueError("line 1:10 extraneous input '=' expecting {'@', '$', 'true', 'false', 'null', '{', '[', STRING, NUMBER}")

Raku (JSON-Path)

Not supported

Evaluation of embedded Perl 6 code not allowed (construct with :allow-eval)

Ruby (jsonpath)

[]

Rust (jsonpath)

Not supported

parsing error

Rust (jsonpath_lib)

[]

Rust (jsonpath_plus)

[]

Scala (jsonpath)

[]

Swift (Sextant)

[
  {
    "key": "Mot\u00f6rhead"
  }
]

dotNET (Json.NET)

Not supported

Unexpected character while parsing path query: "

dotNET (JsonCons.JsonPath)

[
  {
    "key": "Mot\u00f6rhead"
  }
]

dotNET (JsonPath.Net)

[
  {
    "key": "Mot\u00f6rhead"
  }
]

dotNET (JsonPathLib)

[
  {
    "key": "Mot\u00f6rhead"
  }
]

dotNET (Manatee.Json)

[
  {
    "key": "Mot\u00f6rhead"
  }
]

JSON (Path_Reference_Implementation)

Not supported

 --> 1:3
  |
1 | $[?(@.key=="Mot\u00f6rhead")]
  |   ^---
  |
  = expected unionChild, unionArrayIndex, or sliceStart

Proposal (A)

[]

Errors

PHP (Goessner) ²

ArgumentCountError

Perl (JSON-Path)

non-safe evaluation, died at main.pl line 11.

Footnotes