Ticket #16807: 16807.diff

wp-includes/post.php

@@ -987 +987 @@
                         $archive_slug = $args->has_archive === true ? $args->rewrite['slug'] : $args->has_archive;
                         if ( $args->rewrite['with_front'] )
                                 $archive_slug = substr( $wp_rewrite->front, 1 ) . $archive_slug;
+                        else
+                                $archive_slug = $wp_rewrite->root . $archive_slug;
 
                         $wp_rewrite->add_rule( "{$archive_slug}/?$", "index.php?post_type=$post_type", 'top' );
                         if ( $args->rewrite['feeds'] && $wp_rewrite->feeds ) {

wp-includes/rewrite.php

@@ -1857 +1857 @@
         function add_permastruct($name, $struct, $with_front = true, $ep_mask = EP_NONE) {
                 if ( $with_front )
                         $struct = $this->front . $struct;
+                else
+                        $struct = $this->root . $struct;
                 $this->extra_permastructs[$name] = array($struct, $ep_mask);
         }