Ticket #40696: 40696.3.diff

src/wp-includes/taxonomy.php

@@ -1703 +1703 @@
 
         $args['fields'] = 'count';
 
-        return get_terms( $args );
+        $term_count = get_terms( $args );
+
+        /**
+         * This filter is used to filter the output of wp_count_terms function.
+         *
+         * @param array|int|WP_Error $term_count Number of terms in that taxonomy or WP_Error if the taxonomy does not exist.
+         * @param string             $taxonomy Taxonomy name.
+         * @param array              $args Count Term Query Arguments.
+         */
+        return apply_filters( 'wp_count_terms', $term_count, $taxonomy, $args );
 }
 
 /**