minifiers: Make keepWhitespace = true default for HTML

Fixes #8771

minifiers/minifiers_test.go

@@ -23,6 +23,7 @@ import (
 	"github.com/gohugoio/hugo/config"
 	"github.com/gohugoio/hugo/media"
 	"github.com/gohugoio/hugo/output"
+	"github.com/tdewolff/minify/v2/html"
 )
 
 func TestNew(t *testing.T) {
@@ -189,3 +190,31 @@ func TestDecodeConfigDecimalIsNowPrecision(t *testing.T) {
 	c.Assert(conf.Tdewolff.CSS.Precision, qt.Equals, 3)
 
 }
+
+// Issue 8771
+func TestDecodeConfigKeepWhitespace(t *testing.T) {
+	c := qt.New(t)
+	v := config.New()
+	v.Set("minify", map[string]interface{}{
+		"tdewolff": map[string]interface{}{
+			"html": map[string]interface{}{
+				"keepEndTags": false,
+			},
+		},
+	})
+
+	conf, err := decodeConfig(v)
+
+	c.Assert(err, qt.IsNil)
+	c.Assert(conf.Tdewolff.HTML, qt.DeepEquals,
+		html.Minifier{
+			KeepComments:            false,
+			KeepConditionalComments: true,
+			KeepDefaultAttrVals:     true,
+			KeepDocumentTags:        true,
+			KeepEndTags:             false,
+			KeepQuotes:              false,
+			KeepWhitespace:          true},
+	)
+
+}