Possible bug with template and custom modifier

[natenho]

Hello, I'm trying to apply a custom modifier to a field and the expected output should be the complete json, although it is ignoring the remaining fields.

Reproduction

package main

import (
	"fmt"
	"strings"

	"github.com/tidwall/gjson"
)

func main() {

	gjson.AddModifier("case", func(json, arg string) string {
		if arg == "upper" {
			return strings.ToUpper(json)
		}
		if arg == "lower" {
			return strings.ToLower(json)
		}
		return json
	})

	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"]}
		]
	  }
	`
	result := gjson.Get(json, `{"children":children|@case:upper,"name":name.first,"age":age}`)
	fmt.Println(result.Raw)
}

Expected Output (all fields)

{"children":["SARA","ALEX","JACK"], "name":"Tom", "age": 37}

Actual Output (missing all the other fields)

{"children":["SARA","ALEX","JACK"]}

[tidwall]

I just pushed a fix. Thanks for reporting.

[natenho]

@tidwall It's working now! Thank you for the amazingly fast response !!🥇