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Getting count of array with a filter does not work as expected #261

@thestephenstanton

Description

@thestephenstanton

Using this JSON:

{
  "name": {"first": "Tom", "last": "Anderson"},
  "age":37,
  "children": ["Sara","Alex","Jack"],
  "fav.movie": "Deer Hunter",
  "friends": [
    {"first": "Dale", "last": "Murphy", "age": 44, "nets": ["ig", "fb", "tw"]},
    {"first": "Roger", "last": "Craig", "age": 68, "nets": ["fb", "tw"]},
    {"first": "Jane", "last": "Murphy", "age": 47, "nets": ["ig", "tw"]}
  ]
}

Normal Behavior

If I run gjson.Get(testJSON, "friends") I'll get an array back of the friends. Ok all good.
If I run gjson.Get(testJSON, "friends.#") I will get 4 back. Meaning that if I use .# on the end of a path that is an array, I will get the count back.

Problem Behavior

If I run gjson.Get(testJSON, "friends.#(last==\"Murphy\")#") I get an array back of size two and only with friends with the last name Murphy. All good, still works as expected.

HOWEVER, using the same .# at the end of a path that leads to an array, I would expect to get back the count of that array, but I do not. So if I run gjson.Get(testJSON, "friends.#(last==\"Murphy\")#.#") I actually get back an empty array [].

I would expect to get the count of that array which should be 2.

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