Ticket #18263: tax-doin-wrong.patch

wp-includes/taxonomy.php

@@ -311 +311 @@
                                         );
         $args = wp_parse_args($args, $defaults);
 
+        if ( false === $args['_builtin'] && ! empty( $wp )  ) {
+                $reserved = array(      'category',
+                                                        'link_category',
+                                                        'nav_menu',
+                                                        'post',
+                                                        'post_format',
+                                                        'post_tag',
+                                                        'type',
+                                                );
+                $reserved = array_merge( $reserved, $wp->public_query_vars, $wp->private_query_vars );
+                if ( in_array( $taxonomy, $reserved ) )
+                        _doing_it_wrong( __FUNCTION__, __( 'You should not use a reserved term when registering a taxonomy.' ), '3.3' );
+                
+                // For generating the Codex List: http://codex.wordpress.org/Function_Reference/register_taxonomy#Reserved_Terms
+                //sort( $reserved );
+                //echo '<div>';
+                //foreach ( $reserved as $key ) echo '* ' . $key . '<br />';
+                //echo '</div>';
+        }
+        
         if ( false !== $args['query_var'] && !empty($wp) ) {
                 if ( true === $args['query_var'] )
                         $args['query_var'] = $taxonomy;