From be91749a25358789bfc4f177238b79cd2afe11d2 Mon Sep 17 00:00:00 2001
From: Masaaki Goshima <goccy54@gmail.com>
Date: Wed, 13 Nov 2019 12:14:49 +0900
Subject: [PATCH] Remove tag handling without identifier

---
 decode_test.go |  2 +-
 encode_test.go | 28 ++++++++++++++--------------
 struct.go      |  3 ---
 3 files changed, 15 insertions(+), 18 deletions(-)

diff --git a/decode_test.go b/decode_test.go
index 132a6a99..7e992fec 100644
--- a/decode_test.go
+++ b/decode_test.go
@@ -591,7 +591,7 @@ func TestDecoder(t *testing.T) {
 		{
 			"a: 1",
 			struct {
-				B int "a"
+				B int `yaml:"a"`
 			}{1},
 		},
 
diff --git a/encode_test.go b/encode_test.go
index 9e65d17c..930f5bb3 100644
--- a/encode_test.go
+++ b/encode_test.go
@@ -212,56 +212,56 @@ func TestEncoder(t *testing.T) {
 		{
 			"a: 1\n",
 			struct {
-				A int "a,omitempty"
-				B int "b,omitempty"
+				A int `yaml:"a,omitempty"`
+				B int `yaml:"b,omitempty"`
 			}{1, 0},
 		},
 		{
 			"{}\n",
 			struct {
-				A int "a,omitempty"
-				B int "b,omitempty"
+				A int `yaml:"a,omitempty"`
+				B int `yaml:"b,omitempty"`
 			}{0, 0},
 		},
 
 		{
 			"a: {x: 1}\n",
 			struct {
-				A *struct{ X, y int } "a,omitempty,flow"
+				A *struct{ X, y int } `yaml:"a,omitempty,flow"`
 			}{&struct{ X, y int }{1, 2}},
 		},
 
 		{
 			"{}\n",
 			struct {
-				A *struct{ X, y int } "a,omitempty,flow"
+				A *struct{ X, y int } `yaml:"a,omitempty,flow"`
 			}{nil},
 		},
 
 		{
 			"a: {x: 0}\n",
 			struct {
-				A *struct{ X, y int } "a,omitempty,flow"
+				A *struct{ X, y int } `yaml:"a,omitempty,flow"`
 			}{&struct{ X, y int }{}},
 		},
 
 		{
 			"a: {x: 1}\n",
 			struct {
-				A struct{ X, y int } "a,omitempty,flow"
+				A struct{ X, y int } `yaml:"a,omitempty,flow"`
 			}{struct{ X, y int }{1, 2}},
 		},
 		{
 			"{}\n",
 			struct {
-				A struct{ X, y int } "a,omitempty,flow"
+				A struct{ X, y int } `yaml:"a,omitempty,flow"`
 			}{struct{ X, y int }{0, 1}},
 		},
 		{
 			"a: 1.0\n",
 			struct {
-				A float64 "a,omitempty"
-				B float64 "b,omitempty"
+				A float64 `yaml:"a,omitempty"`
+				B float64 `yaml:"b,omitempty"`
 			}{1, 0},
 		},
 
@@ -269,13 +269,13 @@ func TestEncoder(t *testing.T) {
 		{
 			"a: [1, 2]\n",
 			struct {
-				A []int "a,flow"
+				A []int `yaml:"a,flow"`
 			}{[]int{1, 2}},
 		},
 		{
 			"a: {b: c, d: e}\n",
 			&struct {
-				A map[string]string "a,flow"
+				A map[string]string `yaml:"a,flow"`
 			}{map[string]string{"b": "c", "d": "e"}},
 		},
 		{
@@ -283,7 +283,7 @@ func TestEncoder(t *testing.T) {
 			struct {
 				A struct {
 					B, D string
-				} "a,flow"
+				} `yaml:"a,flow"`
 			}{struct{ B, D string }{"c", "e"}},
 		},
 
diff --git a/struct.go b/struct.go
index c4f1fb81..5040031c 100644
--- a/struct.go
+++ b/struct.go
@@ -27,9 +27,6 @@ type StructField struct {
 
 func structField(field reflect.StructField) *StructField {
 	tag := field.Tag.Get(StructTagName)
-	if tag == "" && strings.Index(string(field.Tag), ":") < 0 {
-		tag = string(field.Tag)
-	}
 	fieldName := strings.ToLower(field.Name)
 	options := strings.Split(tag, ",")
 	if len(options) > 0 {