Ticket #14746: ticket.14746.post_class.diff

wp-includes/post-template.php

@@ -357 +357 @@
                 $classes[] = 'tag-' . sanitize_html_class($tag->slug, $tag->term_id);
         }
 
+        // Post Formats
+        $post_format = get_post_format( $post );
+        if ( $post_format && !is_wp_error($post_format) )
+                $classes[] = 'post-format-' . esc_attr( $post_format );
+        else
+                $classes[] = 'post-format-default';
+
         if ( !empty($class) ) {
                 if ( !is_array( $class ) )
                         $class = preg_split('#\s+#', $class);