Ticket #37114: 37144.1.patch

src/wp-includes/post-template.php

@@ -507 +507 @@
 
         // All public taxonomies
         $taxonomies = get_taxonomies( array( 'public' => true ) );
+
+        /**
+         * Filters which Taxonomies that will have it's terms returned on the `get_post_class`.
+         *
+         * By default it will use the public taxonomies.
+         *
+         * @since 4.7.0
+         *
+         * @param array   $taxonomies Public taxonomy names to show term classes for, array of strings.
+         * @param WP_Post $post       Post object.
+         * @param array   $classes    The classes that are going to be returned so far.
+         */
+        $taxonomies = apply_filters( 'post_class_taxonomies', $taxonomies, $post, $classes );
+
         foreach ( (array) $taxonomies as $taxonomy ) {
                 if ( is_object_in_taxonomy( $post->post_type, $taxonomy ) ) {
                         foreach ( (array) get_the_terms( $post->ID, $taxonomy ) as $term ) {