Different behaviors between this library and standard encoding/json when unmarshal yaml to a struct embedded with other structs

[Joy Zhang]

Take a look at the code below：

package main

import (
	"encoding/json"
	"fmt"
	"log"
	
	"gopkg.in/yaml.v3"
)

type Base struct {
	Name string `json:"name" yaml:"name"`
}

type Foo struct {
	Base
	FooName string `json:"foo_name" yaml:"foo_name"`
}

type Bar struct {
	Base
	BarName string `json:"bar_name" yaml:"bar_name"`
}

var jsonTxt = `{
	"name": "base",
	"foo_name": "foobar"
}`

var yamlTxt = `
name: base
bar_name: foobar
`

func main() {
	var (
		foo Foo
		bar Bar
	)
	if err := json.Unmarshal([]byte(jsonTxt), &foo); err != nil {
		log.Fatal(err)
	}

	if err := yaml.Unmarshal([]byte(yamlTxt), &bar); err != nil {
		log.Fatal(err)
	}

	fmt.Printf("foo.Name in json: %q, foo.FooName in json: %q\n", foo.Name, foo.FooName)
	fmt.Printf("bar.Name in yaml: %q, bar.BarName in yaml; %q\n", bar.Name, bar.BarName)
}

the output:

foo.Name in json: "base", foo.FooName in json: "foobar"
bar.Name in yaml: "", bar.BarName in yaml; "foobar"

"encoding/json" can set field value of embeded struct，but yaml not.