trim spaces between tags when filed is single.

tagalign.go

@@ -340,14 +340,9 @@ func (w *Helper) Process(pass *analysis.Pass) { //nolint:gocognit
 			sortBy(w.fixedTagOrder, tags)
 		}
 
-		if reflect.DeepEqual(originalTags, tags.Tags()) {
-			// if tags order not changed, do nothing
-			continue
-		}
-
 		newTagValue := fmt.Sprintf("`%s`", tags.String())
-		if field.Tag.Value == newTagValue {
-			// nothing changed
+		if reflect.DeepEqual(originalTags, tags.Tags()) && field.Tag.Value == newTagValue {
+			// if tags order not changed, do nothing
 			continue
 		}
 

tagalign_test.go

@@ -64,3 +64,11 @@ func Test_strictStyle(t *testing.T) {
 	assert.NoError(t, err)
 	analysistest.Run(t, sort, a)
 }
+
+func Test_alignSingleField(t *testing.T) {
+	// only align
+	a := NewAnalyzer()
+	unsort, err := filepath.Abs("testdata/single_field")
+	assert.NoError(t, err)
+	analysistest.Run(t, unsort, a)
+}

testdata/single_field/example.go

@@ -0,0 +1,10 @@
+package singlefield
+
+type FooBar struct {
+	Foo int    `json:"foo" validate:"required"`
+	Bar string `json:"bar" validate:"required"`
+
+	FooFoo int8 `json:"foo_foo"     validate:"required"` // want `json:"foo_foo" validate:"required"`
+
+	BarBar int `json:"bar_bar" validate:"required"`
+}

testdata/sortorder/example.go

@@ -7,6 +7,6 @@ type SortWithOrderExample struct {
 	FooBar int `xml:"bar"           json:"bar,omitempty"             yaml:"foo"   gorm:"column:bar"   `
 	// aligned but not sorted, should be reported
 	BarFoo int `xml:"bar" yaml:"foo" json:"bar,omitempty" gorm:"column:bar" validate:"required" zip:"bar"` // want `xml:"bar" json:"bar,omitempty" yaml:"foo" gorm:"column:bar" validate:"required" zip:"bar"`
-	// not aligned but sorted, should not be reported
-	FooBarFoo int `xml:"bar"    json:"bar,omitempty"       yaml:"foo"       gorm:"column:bar" validate:"required" zip:"bar"`
+	// not aligned but sorted, should trim spaces between tags
+	FooBarFoo int `xml:"bar"    json:"bar,omitempty"       yaml:"foo"       gorm:"column:bar" validate:"required" zip:"bar"` // want `xml:"bar" json:"bar,omitempty" yaml:"foo" gorm:"column:bar" validate:"required" zip:"bar"`
 }