diff --git a/core/modules/link/src/Plugin/Field/FieldFormatter/LinkFormatter.php b/core/modules/link/src/Plugin/Field/FieldFormatter/LinkFormatter.php
index bd67402..d33282d 100644
--- a/core/modules/link/src/Plugin/Field/FieldFormatter/LinkFormatter.php
+++ b/core/modules/link/src/Plugin/Field/FieldFormatter/LinkFormatter.php
@@ -149,8 +149,9 @@ public function viewElements(FieldItemListInterface $items) {
         );
 
         if (!empty($item->_attributes)) {
-          // Take the fallback behavior of ___ by just setting the
-          // _attributes directly.
+          // Piggyback on the metadata attributes,
+          // which will be placed in the field template wrapper,
+          // and set the URL value in a content attribute.
           $item->_attributes += array('content' => $item->url);
         }
       }
@@ -160,7 +161,6 @@ public function viewElements(FieldItemListInterface $items) {
           '#title' => $link_title,
           '#options' => $url->getOptions(),
         );
-
         if ($url->isExternal()) {
           $element[$delta]['#href'] = $url->getPath();
         }
diff --git a/core/modules/link/src/Plugin/Field/FieldFormatter/LinkSeparateFormatter.php b/core/modules/link/src/Plugin/Field/FieldFormatter/LinkSeparateFormatter.php
index b0e7a16..40daa44 100644
--- a/core/modules/link/src/Plugin/Field/FieldFormatter/LinkSeparateFormatter.php
+++ b/core/modules/link/src/Plugin/Field/FieldFormatter/LinkSeparateFormatter.php
@@ -79,6 +79,7 @@ public function viewElements(FieldItemListInterface $items) {
       );
 
       if (!empty($item->_attributes)) {
+        // Set our RDFa attributes on the <a> element that is being built.
         $url->setOption('attributes', $item->_attributes);
 
         // Unset field item attributes since they have been included in the
diff --git a/core/modules/rdf/src/Tests/Field/EmailFieldRdfaTest.php b/core/modules/rdf/src/Tests/Field/EmailFieldRdfaTest.php
index 273aa94..7eb8d33 100644
--- a/core/modules/rdf/src/Tests/Field/EmailFieldRdfaTest.php
+++ b/core/modules/rdf/src/Tests/Field/EmailFieldRdfaTest.php
@@ -48,7 +48,6 @@ public function setUp() {
   public function testAllFormatters() {
     // Test the plain formatter.
     $this->assertFormatterRdfa(array('type'=>'string'), 'http://schema.org/email', array('value' => $this->testValue));
-
     // Test the mailto formatter.
     $this->assertFormatterRdfa(array('type'=>'email_mailto'), 'http://schema.org/email', array('value' => $this->testValue));
   }