Ticket #9681: 9681.2.diff

src/wp-includes/post-template.php

@@ -1851 +1851 @@
                 if ( ( 'revision' === $type && $is_autosave ) || ( 'autosave' === $type && ! $is_autosave ) )
                         continue;
 
-                $rows .= "\t<li>" . wp_post_revision_title_expanded( $revision ) . "</li>\n";
+                $rows .= "\t<li>" . wp_post_revision_title_expanded( $revision ) .
+
+                /**
+                * Filter the actions available in the revisions list meta box.
+                *
+                * @since 4.4.0
+                *
+                * @param string $actions  The available actions (HTML) for each revision in the list.
+                * @param int    $revision The revision id.
+                * @param int    $post_id  The revision's parent post id.
+                */
+                apply_filters( 'wp_post_revision_actions', '', $revision, $post_id ) .
+                "</li>\n";
         }
 
         echo "<div class='hide-if-js'><p>" . __( 'JavaScript must be enabled to use this feature.' ) . "</p></div>\n";