Ticket #8703: 8703.2.diff

wp-includes/link-template.php

@@ -973 +973 @@
 }
 
 /**
+ * Display adjacent post relational link.
+ *
+ * Can either be next or previous post relational link.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format.
+ * @param bool $in_same_cat Optional. Whether link should be in same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ * @param bool $previous Optional, default is true. Whether display link to previous post.
+ */
+function adjacent_post_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '', $previous = true) {
+        if ( $previous && is_attachment() )
+                $post = & get_post($GLOBALS['post']->post_parent);
+        else
+                $post = get_adjacent_post($in_same_cat,$excluded_categories,$previous);
+
+        if ( !$post )
+                return;
+
+        if ( empty($post->post_title) )
+                $post->post_title = $previous ? __('Previous Post') : __('Next Post');
+
+        $date = mysql2date(get_option('date_format'), $post->post_date);
+
+        $title = str_replace('%title', $post->post_title, $title);
+        $title = str_replace('%date', $date, $title);
+
+        $title = apply_filters('the_title', $title, $post);
+        
+        $link = $previous ? "<link rel='prev' title='" : "<link rel='next' title='";
+        $link .= $title;
+        $link .= "' href='" . get_permalink($post) . "' />\n";
+
+        $adjacent = $previous ? 'previous' : 'next';
+        echo apply_filters( "{$adjacent}_post_rel_link", $link );
+}
+
+/**
+ * Display relational links for the posts adjacent to the current post.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format.
+ * @param bool $in_same_cat Optional. Whether link should be in same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ */
+function adjacent_posts_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '') {
+        adjacent_post_rel_link($title, $in_same_cat, $excluded_categories = '', true);
+        adjacent_post_rel_link($title, $in_same_cat, $excluded_categories = '', false);
+}
+
+/**
+ * Display relational link for the next post adjacent to the current post.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format.
+ * @param bool $in_same_cat Optional. Whether link should be in same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ */
+function next_post_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '') {
+        adjacent_post_rel_link($title, $in_same_cat, $excluded_categories = '', false);
+}
+
+/**
+ * Display relational link for the previous post adjacent to the current post.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format.
+ * @param bool $in_same_cat Optional. Whether link should be in same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ */
+function prev_post_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '') {
+        adjacent_post_rel_link($title, $in_same_cat, $excluded_categories = '', true);
+}
+
+/**
  * Retrieve get links for page numbers.
  *
  * @since 1.5.0

wp-content/themes/classic/header.php

@@ -17 +17 @@
         </style>
 
         <link rel="pingback" href="<?php bloginfo('pingback_url'); ?>" />
+        <?php if ( is_single() ) adjacent_posts_rel_link(); ?>
         <?php wp_get_archives('type=monthly&format=link'); ?>
         <?php //comments_popup_script(); // off by default ?>
         <?php wp_head(); ?>

wp-content/themes/default/header.php

@@ -14 +14 @@
 
 <link rel="stylesheet" href="<?php bloginfo('stylesheet_url'); ?>" type="text/css" media="screen" />
 <link rel="pingback" href="<?php bloginfo('pingback_url'); ?>" />
+<?php if ( is_single() ) adjacent_posts_rel_link(); ?>
 
 <style type="text/css" media="screen">