Ticket #41246: 41246.2.diff

src/wp-includes/class-wp-term-query.php

@@ -672 +672 @@
 
                 $this->request = "{$this->sql_clauses['select']} {$this->sql_clauses['from']} {$where} {$this->sql_clauses['orderby']} {$this->sql_clauses['limits']}";
 
+
+                /**
+                 * Filters the terms array before the query takes place.
+                 *
+                 * Return a non-null value to bypass WordPress's default term queries.
+                 *
+                 * @since 5.1.0
+                 *
+                 * @param array|null $results Return an array of term data to short-circuit WP's term query or null to allow WP to run its normal queries.
+                 * @param WP_Term_Query $this The WP_Term_Query instance (passed by reference).
+                 */
+                $this->terms = apply_filters_ref_array( 'terms_pre_query', array( null, &$this ) );
+                if ( null !== $this->terms ) {
+                        return $this->terms;
+                }
+
                 // $args can be anything. Only use the args defined in defaults to compute the key.
                 $key          = md5( serialize( wp_array_slice_assoc( $args, array_keys( $this->query_var_defaults ) ) ) . serialize( $taxonomies ) . $this->request );
                 $last_changed = wp_cache_get_last_changed( 'terms' );