Title: Version 2.9 Published: May 19, 2019 --- # Version 2.9 ## In this article * [Highlights](https://wordpress.org/documentation/wordpress-version/version-2-9/?output_format=md#highlights) * [New Features](https://wordpress.org/documentation/wordpress-version/version-2-9/?output_format=md#new-features) - [User Features](https://wordpress.org/documentation/wordpress-version/version-2-9/?output_format=md#user-features) - [Development, Themes, Plugins](https://wordpress.org/documentation/wordpress-version/version-2-9/?output_format=md#development-themes-plugins) [ Back to top](https://wordpress.org/documentation/wordpress-version/version-2-9/?output_format=md#wp--skip-link--target) On December 18th, 2009, WordPress **Version 2.9**, named for Carmen McRae, was released to the public. For more information on this enhancement and bug-fix release, read the [Development Blog](https://wordpress.org/news/2009/12/wordpress-2-9/) and see the [Changelog for 2.9](https://codex.wordpress.org/Changelog/2.9). For **Version 2.9**, the database version (**db_version** in **wp_options**) changed to 12329, and the [Trac](https://core.trac.wordpress.org/) revision was [12455](https://core.trac.wordpress.org/changeset/12455). * [View Open Tickets](https://trac.wordpress.org/query?status=new&status=assigned&status=reopened&milestone=2.9) * [View Closed Tickets](https://trac.wordpress.org/query?status=closed&milestone=2.9) ## 󠀁[Highlights](https://wordpress.org/documentation/wordpress-version/version-2-9/?output_format=md#highlights)󠁿 * Requires [MySQL](https://codex.wordpress.org/Glossary#MySQL) 4.1.2 or greater( old requirement was MySQL 4.0 or greater). ## 󠀁[New Features](https://wordpress.org/documentation/wordpress-version/version-2-9/?output_format=md#new-features)󠁿 ### 󠀁[User Features](https://wordpress.org/documentation/wordpress-version/version-2-9/?output_format=md#user-features)󠁿 * [Trash status](https://codex.wordpress.org/Trash_status) for posts, pages, and comments (includes restore and permanent delete) * Add support for ‘include’ and ‘exclude’ to ([Gallery Shortcode](https://codex.wordpress.org/Gallery_Shortcode)) * Allow user registration to be enabled by an [XMLRPC](https://codex.wordpress.org/index.php?title=XMLRPC&action=edit&redlink=1) client * Add support for sticky posts to the WXR [exporter](https://codex.wordpress.org/Tools_Export_SubPanel) and [importer](https://codex.wordpress.org/Tools_Import_SubPanel) * ‘rel=canonical’ for singular pages * Scroll back to the same location after saving a file in the Plugin and Theme editors * Correct comments and remove unnecessary echos from the default themes sidebar template file * Enable the APP (Atom) attachment file download to work correctly * Support location of [category templates](https://codex.wordpress.org/Template_Hierarchy#Category_display) based on ‘category-slug’ as well as ‘category-id’ ([Ticket 10614](https://core.trac.wordpress.org/ticket/10614)) * Support location of [tag templates](https://codex.wordpress.org/Template_Hierarchy#Tag_display) based on ‘tag-id’ as well as ‘tag-slug’ ([Ticket 10868](https://core.trac.wordpress.org/ticket/10868)) * Support location of [page templates](https://codex.wordpress.org/Template_Hierarchy#Page_display) based on ‘page-slug’ and ‘page-id’ * Set “Allow my blog to appear in search engines” to checked in installation * Don’t offer to make a category its own parent * Remove Sphere from search list * Minify admin CSS * Show correct max upload filesize error message * Add ‘rel’ attribute to [next/previous post links](https://codex.wordpress.org/Next_and_Previous_Links) * Make the default and classic themes comment textareas valid XHTML * Clean up ‘.button’ and ‘.button[disabled]’ CSS classes, add ‘spinner’ and ‘gray- out’ buttons after clicking Publish or Update post * Fix race condition with autosave when clicking Publish immediately after entering post title * Add Comments for Pages in the WordPress Default theme * Define ‘$content_width’ for Kubrick * Better feedback on publishing of future posts and pages * Display comments in descending date order, consistently * Add means of automatically repairing tables * [Press This](https://codex.wordpress.org/Press_This) bookmarklet fixes * Give plugins and themes simple control over the text displayed at the end of an autogenerated [Excerpt](https://codex.wordpress.org/Excerpt) * Don’t show “Change Permalinks” button when editing the page set as “Front page” * Image editing * Retire BunnyTags importer * Retire Jerome’s keywords importer * Explain that the permalink is temporary for autosave generated permalinks * Update SimplePie to 1.2 * Eliminate the redundant and confusing comment threading depth of 1 * Easier [Embeds](https://codex.wordpress.org/Embeds) with oEmbed support (see  [Ticket #10337](https://core.trac.wordpress.org/ticket/10337)) (oEmbed discovery disabled by default, use [plugin](https://wordpress.org/extend/plugins/enable-oembed-discovery/) to enable it) * TinyMCE 3.2.7 * Remove rel=’tag’ on links in Tag Clouds * Add a title to the Home link output by [wp_page_menu()](https://codex.wordpress.org/Template_Tags/wp_page_menu) * Adjust comment moderation [keyboard shortcut keys](https://codex.wordpress.org/Keyboard_Shortcuts)‘ d = trash’ or delete depending on the screen * Show “Draft updated” instead of “Post updated” when saving draft * Show the login form in a popup when autosave hits the login grace period * Open View/Preview post in a new window from the link in the Saved/Updated message * Separate fields for ‘image alt’ and ‘image caption’ in [Media uploader](https://codex.wordpress.org/Media_Add_New_SubPanel) * Display better information about broken themes when there is no stylesheet * Improve situation when tables such as [wp_options](https://codex.wordpress.org/Database_Description#Table:_wp_options) table were ‘corrupt’ new installation message was offered. Add means of automatically repairing tables * Export and import custom taxonomies * Admin copy improvements * Don’t show page templates in the drop down if they are in a subdirectory * Make codex link open in a new window * Change ‘Remove’ link on widgets to ‘Delete’ because it doesn’t just remove it, it deletes the settings for that widget instance. ### 󠀁[Development, Themes, Plugins](https://wordpress.org/documentation/wordpress-version/version-2-9/?output_format=md#development-themes-plugins)󠁿 * Added ‘[excerpt_more](https://codex.wordpress.org/Plugin_API/Filter_Reference/excerpt_more)‘ filter to [wp_trim_excerpt()](https://codex.wordpress.org/Function_Reference/wp_trim_excerpt) function, which allow developers to change excerpt ‘[…]’ more string ([Ticket 10395](https://core.trac.wordpress.org/ticket/10395)) * Add ‘[smilies_src](https://codex.wordpress.org/index.php?title=Plugin_API/Filter_Reference/smilies_src&action=edit&redlink=1)‘ filter so plugins can better add smilies * Canonical redirects for post name queries * Allow [_wp_get_comment_list()](https://codex.wordpress.org/index.php?title=Function_Reference/_wp_get_comment_list&action=edit&redlink=1) to handle custom comment types * Return an empty array instead of false for [get_children()](https://codex.wordpress.org/Function_Reference/get_children) when no children found * Add some filters so that HTTP requests can be filtered * Move plugin update notice output to the plugin specific hook * Limit wp-mail ‘blog by email’ checks to every 5 minutes * Make it much easier to filter contact methods from user profiles * Allow filtering of get_edit_post_link for custom post_type * ‘[get_sample_permalink_html](https://codex.wordpress.org/index.php?title=Plugin_API/Filter_Reference/get_sample_permalink_html&action=edit&redlink=1)‘ filter * Enforce activation key to be a string, reject activation keys that are arrays * Support for new post types * Respect custom post_type in queries * Send Retry-After header when in maintenance mode * Various WP Filesystem related fixes and documentation * Add constants for ftp connections timeouts * Increase timeout on cron-based requests when checking for upgrades * Don’t use [has_action()](https://codex.wordpress.org/Function_Reference/has_action) before [do_action()](https://codex.wordpress.org/Function_Reference/do_action) in http.php * Speed up jQuery based scripts * Use the current user as author for autosave * Show My Posts as default view on the Edit Posts screen for users without ‘edit_others_posts’ cap * Ensure that drafts viewed over XMLRPC have a correct gmt date set * Pass user id to ‘get_’ the_author_meta filters * Move [_wp_get_user_contactmethods()](https://codex.wordpress.org/index.php?title=Function_Reference/_wp_get_user_contactmethods&action=edit&redlink=1) into the registrations functions file * Machine parseable db error codes * Add global JS vars and actions to the media uploader iframe * Add JSON compat for PHP < 5.2 * Make option_name the primary key for the [options table](https://codex.wordpress.org/Database_Description#Table:_wp_options) * Allow a plugin to do a complete takeover of Post by Email * Logarithmic scale for [tag cloud](https://codex.wordpress.org/Template_Tags/wp_tag_cloud) * Pass Post ID to the ‘[get_comments_number](https://codex.wordpress.org/index.php?title=Plugin_API/Filter_Reference/get_comments_number&action=edit&redlink=1)‘ filter * Always filter the url in the media upload form * Add a ‘[the_terms](https://codex.wordpress.org/index.php?title=Plugin_API/Filter_Reference/the_terms&action=edit&redlink=1)‘ filter * [is_blog_installed()](https://codex.wordpress.org/Function_Reference/is_blog_installed) improvements * Allow force_[ssl_admin()](https://codex.wordpress.org/index.php?title=Function_Reference/ssl_admin&action=edit&redlink=1) to properly accept false as a value * Pass logged_in cookie to async-upload and filter the cookie scheme in auth_redirect() * Add more actions around database add/delete/update operations * phpDoc for wp_”check|set”_post_lock functions * Use the old strings which are more translator friendly and add a generic default string to aid re-use by plugins adding post_types * Filter fields through kses upon display and introduce [sanitize_user_object()](https://codex.wordpress.org/index.php?title=Function_Reference/sanitize_user_object&action=edit&redlink=1) and [sanitize_user_field()](https://codex.wordpress.org/index.php?title=Function_Reference/sanitize_user_field&action=edit&redlink=1) * Use null instead of 0 when setting content length * Include ‘hidden’ directories in filesystem dirlist by default * Pass args array to ‘[wp_list_pages](https://codex.wordpress.org/Plugin_API/Filter_Reference/wp_list_pages)‘ filter * Actions for taxonomy updates * Key should be ‘comment_id’ not ‘post_id’ in [comments table](https://codex.wordpress.org/Database_Description#Table:_wp_comments) * Add [get_delete_post_link ()](https://codex.wordpress.org/Function_Reference/get_delete_post_link) to retrieve delete posts link for post * Add ‘separator’ parameter to [wp_tag_cloud()](https://codex.wordpress.org/Template_Tags/wp_tag_cloud) and [wp_generate_tag_cloud()](https://codex.wordpress.org/Template_Tags/wp_generate_tag_cloud) functions ([Ticket 10315](https://core.trac.wordpress.org/ticket/10315)) * Added [add_comment_meta()](https://codex.wordpress.org/Function_Reference/add_comment_meta) family of functions * Use a post_parent of 0 instead of -1 to indicate unattached posts * Improve [get_page_hierarchy()](https://codex.wordpress.org/Function_Reference/get_page_hierarchy) function * Deprecate [the_content_rss()](https://codex.wordpress.org/Function_Reference/the_content_rss), add [the_content_feed()](https://codex.wordpress.org/Function_Reference/the_content_feed) and [get_the_content_feed()](https://codex.wordpress.org/Function_Reference/get_the_content_feed). Convert places that called [the_content_rss()](https://codex.wordpress.org/Function_Reference/the_content_rss) with an excerpt length to [the_excerpt_rss()](https://codex.wordpress.org/Function_Reference/the_excerpt_rss). Remove the rss_excerpt_length option. Use [the_content_feed()](https://codex.wordpress.org/Function_Reference/the_content_feed) where [the_content()](https://codex.wordpress.org/Template_Tags/the_content)was previously used in feeds. * Add ‘pad_counts’ argument to [wp_dropdown_categories()](https://codex.wordpress.org/Template_Tags/wp_dropdown_categories) * Remove codepress * Remove the php-gettext library * Canonical post thumbanils * Add a filter to [the_author_posts_link()](https://codex.wordpress.org/Template_Tags/the_author_posts_link) * Merge post.js with page.js and slug.js, optimize categories and tags JS, standardize postboxes IDs and JS * Introduce [register_theme_directory()](https://codex.wordpress.org/Function_Reference/register_theme_directory) which takes a wp-content-relative path and will additionally scan it for themes. Plugins can use this to add themes without requiring copying by the user * Add set_user_role action hook * Allow theme devs to change attrs (like CSS class) of thumbnail images * Add wp-post-image CSS class to post images * Allow for plugins to enhance the number of metadata fields captured from plugin and theme headers * Merge updated pomo code * Switch to using NOOP_Translations for untranslated sites * Improve wptexturize performance * Provide context to the strings in the Plugin and Theme installers to allow for different grammatical gender * Fixes for theme subdir support * Introduce [wp_kses_post()](https://wordpress.org/documentation/wordpress-version/version-2-9/_https://codex.wordpress.org/Function_Reference/wp_kses_post?output_format=md) and [wp_kses_data()](https://codex.wordpress.org/Function_Reference/wp_kses_data) for filtering unescaped data * Add ‘orderby=comment_count’ argument to [query_posts()](https://codex.wordpress.org/Template_Tags/query_posts) * Honor Post Type for Sticky Posts * Allow querying multiple post types * Introduce add_theme_support(feature) and current_theme_supports(feature) for announcing and checking theme support for various features * Introduce [require_if_theme_supports()](https://codex.wordpress.org/Function_Reference/require_if_theme_supports) * Add number of [Embed](https://codex.wordpress.org/index.php?title=Embed&action=edit&redlink=1) related filters * Add ‘IMAGE_EDIT_OVERWRITE’ constant to control edited image save or replace, most useful for setups that have dynamic image resizing * Add [load_child_theme_textdomain()](https://codex.wordpress.org/Function_Reference/load_child_theme_textdomain) to allow child themes to have their own translation files * Add sidebar descriptions to sidebar settings and widget admin screen * Make option_id primary. Add uniques for option_name and autoload * Allow plugins to override the behaviour of [load_textdomain()](https://codex.wordpress.org/Function_Reference/load_textdomain) in a variety of flexible ways * Mark [_c()](https://codex.wordpress.org/Function_Reference/_c) as deprecated. The new [_x()](https://codex.wordpress.org/Function_Reference/_x) function should be used instead. * Allow plugins to change the redirect on post/page publishing/submitting * Standardize on ‘user_id’ instead of ‘user_ID’ when passing comment data. Accept either ‘user_id’ or ‘user_ID’. Remove ‘user_id’ global. * Filter imported comments * Introducing set_post_image_size(w, h, crop) so themes can register their special size/crop for canonical post images * Standardize around “post image” instead of “post thumbnail” * Allow registering post image support per post type * Return false from is_paged() if on the first page. * Check MySQL and PHP versions when auto upgrading * Add required php and mysql versions to version.php * Hard code required version in update-core.php First published May 19, 2019 Last updated