+/**
+ * Filter whether to allow 'HEAD' requests to generate content.
+ *
+ * Provides a significant performance bump by exiting before the page
+ * content loads for 'HEAD' requests. See #14348.
+ *
+ * @since 3.5.0
+ *
+ * @param bool $exit Whether to exit without generating any content for 'HEAD' requests. Default true.
+ */
+if ( 'HEAD' === $_SERVER['REQUEST_METHOD'] && apply_filters( 'exit_on_http_head', true ) )
+ exit();
+
+// Process feeds and trackbacks even if not using themes.
+if ( is_robots() ) :
+ /**
+ * Fired when the template loader determines a robots.txt request.
+ *
+ * @since 2.1.0
+ */
+ do_action( 'do_robots' );
+ return;
+elseif ( is_feed() ) :
+ do_feed();
+ return;
+elseif ( is_trackback() ) :
+ include( ABSPATH . 'wp-trackback.php' );
+ return;
+endif;
+
+if ( defined('WP_USE_THEMES') && WP_USE_THEMES ) :
+ $template = false;
+ if ( is_404() && $template = get_404_template() ) :
+ elseif ( is_search() && $template = get_search_template() ) :
+ elseif ( is_front_page() && $template = get_front_page_template() ) :
+ elseif ( is_home() && $template = get_home_template() ) :
+ elseif ( is_post_type_archive() && $template = get_post_type_archive_template() ) :
+ elseif ( is_tax() && $template = get_taxonomy_template() ) :
+ elseif ( is_attachment() && $template = get_attachment_template() ) :
+ remove_filter('the_content', 'prepend_attachment');
+ elseif ( is_single() && $template = get_single_template() ) :
+ elseif ( is_page() && $template = get_page_template() ) :
+ elseif ( is_singular() && $template = get_singular_template() ) :
+ elseif ( is_category() && $template = get_category_template() ) :
+ elseif ( is_tag() && $template = get_tag_template() ) :
+ elseif ( is_author() && $template = get_author_template() ) :
+ elseif ( is_date() && $template = get_date_template() ) :
+ elseif ( is_archive() && $template = get_archive_template() ) :
+ elseif ( is_comments_popup() && $template = get_comments_popup_template() ) :
+ elseif ( is_paged() && $template = get_paged_template() ) :
+ else :
+ $template = get_index_template();
+ endif;
+ /**
+ * Filter the path of the current template before including it.
+ *
+ * @since 3.0.0
+ *
+ * @param string $template The path of the template to include.
+ */
+ if ( $template = apply_filters( 'template_include', $template ) )
+ include( $template );
+ return;
+endif;