Week in Core, Feb. 16-23 2016

Welcome back the latest issue of Week in CoreCore Core is the set of software required to run WordPress. The Core Development Team builds WordPress., covering changes [36671-36541]. Here are the highlights:

  • 131 commits
  • 82 contributors
  • 89 tickets created
  • 9 tickets reopened
  • 140 tickets closed

Ticketticket Created for both bug reports and feature development on the bug tracker. numbers based on trac timeline for the period above.

Note: If you want to help write the next WordPress Core Weekly summary, check out the schedule over at make/docs and get in touch in the #core-weekly-update SlackSlack Slack is a Collaborative Group Chat Platform https://slack.com/. The WordPress community has its own Slack Channel at https://make.wordpress.org/chat/. channel.

Code Changes

AccessibilityAccessibility Accessibility (commonly shortened to a11y) refers to the design of products, devices, services, or environments for people with disabilities. The concept of accessible design ensures both “direct access” (i.e. unassisted) and “indirect access” meaning compatibility with a person’s assistive technology (for example, computer screen readers). (https://en.wikipedia.org/wiki/Accessibility)

  • Improve the color contrast ratio for the input placeholders. [36619] #35777
  • Remove title attributes from the PluginPlugin A plugin is a piece of software containing a group of functions that can be added to a WordPress website. They can extend functionality or add new features to your WordPress websites. WordPress plugins are written in the PHP programming language and integrate seamlessly with WordPress. These can be free in the WordPress.org Plugin Directory https://wordpress.org/plugins/ or can be cost-based plugin from a third-party details modal. [36618] #35111
  • Remove the revisionsRevisions The WordPress revisions system stores a record of each saved draft or published update. The revision system allows you to see what changes were made in each revision by dragging a slider (or using the Next/Previous buttons). The display indicates what has changed in each revision. limit warning from the Publish box. [36612] #35029
  • Fix displaying of Universal time and Local time info on the General Settings screen. [36585] #35064
  • Improve color contrast updating any #999 gray used for text or icons to a darker gray. [36587] #35660
  • Accessibility: after [36000] conditionally print out the aria-describedby attribute on the Featured ImageFeatured image A featured image is the main image used on your blog archive page and is pulled when the post or page is shared on social media. The image can be used to display in widget areas on your site or in a summary list of posts. postbox. [36584] #35076
  • Accessibility: Reduce the WordPress shades of grey, Episode 2. [36582] #35783


  • Replace the custom comment form with comment_form() and reduce number of links. [36595] #35888
  • Remove extra spaces between function names and brackets [36572] #16774, #34365
  • Remove slashes from search terms and use urldecode() in non-URLURL A specific web address of a website or web page on the Internet, such as a website’s URL www.wordpress.org contexts. [36560] #35712


  • Allow users to log in using their email address. [36617] #9568


  • Do not strip slashes from the whole &_POST when doing autosaves. [36543] #35408


Build/Test Tools


  • Rename $linea to $remote_source for clarity. Add remote_source to comment data, so it’s available to preprocess_comment and comment_post filters. Pass the original (unfiltered) response source to the filters too (as remote_source_original in comment data). [36661] #34141
  • Pass comment data to the comment_post filterFilter Filters are one of the two types of Hooks https://codex.wordpress.org/Plugin_API/Hooks. They provide a way for functions to modify data of other functions. They are the counterpart to Actions. Unlike Actions, filters are meant to work in an isolated manner, and should never have side effects such as affecting global variables and output.. [36660] #34141
  • Look for wp_error when checking whether $wpdb->get_col_length() has failed. [36542] #10377
  • Refresh the Moderate Comment screen for a friendlier experience with email moderation actions. [36588] #34133


  • Let WP_Customize_Selective_Refresh class be final to match manager and other component classes. [36624] #27355
  • Ensure dynamic_sidebar() finishes with removing the sidebarSidebar A sidebar in WordPress is referred to a widget-ready area used by WordPress themes to display information that is not a part of the main content. It is not always a vertical column on the side. It can be a horizontal rectangle below or above the content area, footer, header, or any where in the theme. ID from the current_dynamic_sidebar_id_stack. [36623] #27355
  • Prevent dropping backslashes from input on general settings and settings for nav menus and some widgets. [36622] #35898
  • Fix and extend broken ajax unit tests to account for partials being skipped from rendering. [36650] #35914
  • Skip exporting partials to client and handling rendering requests if user can’t modify associated settings. [36643] #27355, #35914
  • Add visual feedback to reorder buttons. [36641] #35041
  • Contain “No image set/selected” in dashed border. [36639] #35826
  • Update unit testunit test Code written to test a small piece of code or functionality within a larger application. Everything from themes to WordPress core have a series of unit tests. Also see regression. for WP_Customize_Nav_Menu_Item_Setting::value_as_wp_post_nav_menu_item() to account for slashing if user can’t unfiltered_html. [36610] #35869
  • Prevent PHPPHP The web scripting language in which WordPress is primarily architected. WordPress requires PHP 5.6.20 or higher notice and JSJS JavaScript, a web scripting language typically executed in the browser. Often used for advanced user interfaces and behaviors. error caused by widgets and nav menus components if user only has customize capability. [36611] #35895
  • Fix previewing and updating of nav menu items containing slashed/slashable characters. [36608] #35869
  • Fix “Loading…” message from persisting in panel title when user does not have manage_options cap to edit blogname. [36606] #35579
  • Add selective refresh framework with implementation for widgets and re-implementation for nav menus. [36586] #27355
  • Prevent consecutive refresh requests from preview from causing JS error. [36583] #27355, #35866
  • In nav menus show the location name instead of slug. [36573] #34755
  • Add missing test changes for [36573]. [36574] #34755
  • Autoprefixer for [36532]. [36548] #31195


  • Correct $number type in number_format_i18n(). [36644] #35893
  • Update the type for $callback parameters to callable in DocBlocks for add_settings_section() and add_settings_field(). [36642] #35772
  • Improve documentation for WP_REST_Request to highlight a caveat of ArrayAccess when it comes to passing similar arguments for multiple request methods. [36636] #35799
  • Improve description of get_term() return value. [36634] #35919
  • Correct param types on some filters in wp_filter_comment(). [36626] #35908
  • WP_Meta_Query accepts ‘EXISTS’ or ‘NOT EXISTS’ for $compare. [36609] #35891
  • Fix two incorrect notations of the $show_admin_bar global to specify a boolean type, not WP_Admin_Bar. [36601] #35686
  • Add missing since and access tags to get_curies method and filter from r36533 [36593] #34729, #32246
  • Add an explanation for the dynamic portion of the {$taxonomy}_term_edit_form_top hook, introduced in [36526]. [36577] #32246
  • Add formatting to a changelog entry in the hook doc for the rest_dispatch_request filter. [36576] #32246
  • Remove a duplicate @static tagtag A directory in Subversion. WordPress uses tags to store a single snapshot of a version (3.6, 3.6.1, etc.), the common convention of tags in version control systems. (Not to be confused with post tags.) from the WP_Customize_Panel->instance_count property DocBlockdocblock (phpdoc, xref, inline docs). [36568] #32246


  • Only display an iframeiframe iFrame is an acronym for an inline frame. An iFrame is used inside a webpage to load another HTML document and render it. This HTML document may also contain JavaScript and/or CSS which is loaded at the time when iframe tag is parsed by the user’s browser. when it was successfully loaded. This prevents showing a blank iframe by first checking if a message was successfully received from it. [36648] #35894
  • Make the click event handler work for dynamically added links. [36637] #35630
  • Load the default site icon from the wp-includes directory. [36635] #35322

External Libraries

  • Update Backbone and Underscore to the latest versions. [36546] #34350



  • Avoid a PHP warning when wptexturize() is called with a trailing less-than symbol. [36578] #35864


HTTPHTTP HTTP is an acronym for Hyper Text Transfer Protocol. HTTP is the underlying protocol used by the World Wide Web and this protocol defines how messages are formatted and transmitted, and what actions Web servers and browsers should take in response to various commands. APIAPI An API or Application Programming Interface is a software intermediary that allows programs to interact with each other and share data in limited, clearly defined ways.

  • Certificate bundle: Attempt to move a certificate lower in the file to allow older OpenSSL versions to parse it & communicate with WordPress.orgWordPress.org The community site where WordPress code is created and shared by the users. This is where you can download the source code for WordPress core, plugins and themes as well as the central location for community conversations and organization. https://wordpress.org/ securely again. The OpenSSL version which was failing in this case was OpenSSL 0.9.8e 23 Feb 2007. [36570] #35637, #30434, #25007

I18Ni18n Internationalization, or the act of writing and preparing code to be fully translatable into other languages. Also see localization. Often written with a lowercase i so it is not confused with a lowercase L or the numeral 1. Often an acquired skill.

  • Add translator comments and context to “New Site Created” email notification strings. [36669] #35716
  • Replace hardcoded URL in a translatable string with a placeholder in wp-admin/upload.php. [36668] #35743
  • Add missing periods to two strings in wp-admin/network/sites.php [36664] #35720
  • Add translators comments to wp-adminadmin (and super admin)/users.php. [36621] #35885
  • Remove HTMLHTML HyperText Markup Language. The semantic scripting language primarily used for outputting content in web browsers. tags from translatable strings in wp-admin/plugins.php. [36662] #35679
  • Add the ability to parse a whole directory with add-textdomain.php. [36600] #35499
  • Remove PHP4 constructor from add-textdomain.php. [36599] #31982
  • Add test for wp_dropdown_languages(). [36631] #35294
  • Respect the coding standards when adding textdomains with add-textdomain.php. [36603] #21616
  • Remove tag from translatable string in wp-admin/includes/class-wp-filesystem-ssh2.php. [36670] #35741
  • Remove tag from translatable string in wp-admin/includes/class-wp-ms-sites-list-table.php. [36663] #35676
  • Remove tag from translatable string in wp-admin/theme-install.php. [36666] #35739
  • Remove tag from translatable string in wp-admin/options-general.php[36656] #35673
  • Remove tags from translatable strings in wp-admin/install.php. [36665] #35738
  • Remove tags from translatable strings in wp-admin/custom-header.php[36658] #35675
  • Remove tags from translatable strings in wp-admin/themes.php. [36657] #35745
  • Remove tag from translatable string in wp-admin/user-edit.php[36655] #35672
  • Remove tag from translatable string in wp-admin/import.php[36653] #35671



  • Ensure backslashes are saved in menu item fields. [36613] #14134

Multisitemultisite Used to describe a WordPress installation with a network of multiple blogs, grouped by sites. This installation type has shared users tables, and creates separate database tables for each blog (wp_posts becomes wp_0_posts). See also network, blog, site

  • Make view mode sticky for networknetwork (versus site, blog) users and sites list tables. [36562] #34365
  • Avoid a PHP Notice when saving a site address without a path. [36561] #35631


  • In wp_upload_dir() do not cache error from wp_mkdir_p() when a directory cannot be created. Keep trying to create the dirs. This happens mostly in file upload context. [36628] #34359
  • Replace wp_upload_dir() with the new wp_get_upload_dir() in all cases where a file is not being uploaded. Deprecate _wp_upload_dir_baseurl(), and replace it with wp_get_upload_dir(). [36569] #34359
  • Reintroduce term metaMeta Meta is a term that refers to the inside workings of a group. For us, this is the team that works on internal WordPress sites like WordCamp Central and Make WordPress. unit test accidentally removed in [36566]. [36567]
  • More performance improvements to metadata lazyloading. [36566] #35816
  • Improve the performance of wp_upload_dir(): [36565] #34359



  • Introduce get_post_types_by_support(). Similar to get_post_types(), this new function returns a list of post type names that support a specific feature. [36652] #34010
  • Non-trashed posts should take slug priority over trashed posts. [36607] #11863


  • Search should match post_excerpt in addition to title and content. When ordering search results, exact matches in the post excerptExcerpt An excerpt is the description of the blog post or page that will by default show on the blog archive page, in search results (SERPs), and on social media. With an SEO plugin, the excerpt may also be in that plugin’s metabox. are weighted above those in post content, but below those in the post title. [36647] #35762
  • Allow a seed value to be passed when using ‘rand’ $orderby. [36632] #35692
  • In WP::handle_404() introduce a filter pre_handle_404 to short-circuit default headerHeader The header of your site is typically the first thing people will experience. The masthead or header art located across the top of your page is part of the look and feel of your website. It can influence a visitor’s opinion about your content and you/ your organization’s brand. It may also look different on different screen sizes. status handling. [36629] #10722
  • is_*( $int ) should not falsely match strings starting with “$int”. [36625] #24674, #35902



Script Loader

  • Don’t parse $src if the current color scheme isn’t registered. [36591] #35882
  • Pass the media attribute as an argument to the style_loader_tag filter. [36592] #34765
  • Bail if WP_Styles::_css_href() returns an empty value. [36590] #35229
  • Make sure that inline styles for handles without a source are printed. [36550] #35229
  • JSHint for [36602]. [36605] #33301
  • Fix missing script output when the groups of dependencies are different. [36604] #35873
  • Introduce wp_add_inline_script(). [36633] #14853
  • Restore loading order for wp-admin: open-sans, dashicons, etc. [36551] #35229


  • Clarify the allowed values for the $media parameter of wp_register_style()/wp_enqueue_style(). [36649] #35921


  • Make $taxonomy parameter optional in get_edit_term_link(). [36646] #35922
  • Allow get_terms() to fetch terms regardless of taxonomy. [36614] #35495
  • In get_terms(), assemble WHERE conditions in an array instead of concatenating. [36598] #35495
  • Add changelog entry for publicly_queryable argument in register_taxonomy(). [36564] #34491





  • Pass locales of all available languages to the themes/plugins update API. [36630] #34937


  • Prevent further actions if an update button is disabled. [36558] #35257
  • Add a hook to the end of the network’s Add New User form. [36556] #15389
  • Add a hook to the end of the Add Site form. [36555] #34739
  • Enhance the language of the “Success” message. [36553] #34897
  • Improve wording on the page for the database connection details. [36545] #26879
  • Use “Username” instead of “User Name”. [36544] #35850


  • Pass the array of user IDs being deleted to the delete_user_form action hook in two places. [36640] #35063
  • Introduce _wp_get_current_user() for improved backward compatibility. [36651] #19615


  • Avoid a PHP notice in is_dynamic_sidebar() is a sidebar is registered but does not yet have an index in the sidebars_widgets option. [36667] #35928


Thanks to @dnewton,@joemcgill, @abiralneupane, @adamsilverstein, @afercia, @aidanlane, @Ankit, @apaliku, @atimmer, @azaozz, @barryceelen, @boonebgorges, @charlestonsw, @chris_dev, @ckoerner, @coffee2code, @coreymcollins, @danielbachhuber, @dd32, @Denis-de-Bernardy, @dlh, @DrewAPicture, @dshanske, @ericlewis, @ethitter, @flixos90, @GaryJ, @gitlost, @groovecoder, @Gupta, @hakre, @helen, @hlashbrooke, @iamntz, @igmoweb, @iseulde, @JamesDiGioia, @jdgrimes, @jeremyfelt, @JoeFusco, @joehoyle, @johnbillion, @jorbin, @K, @karmatosed, @kjbenk, @kovshenin, @lpawlik, @mayukojpn, @mdgl, @meitar, @melchoyce, @MikeHansenMe, @mikejolley, @mikeschroder, @netweb, @nicd, @ocean90, @pento, @prettyboymp, @ptahdunbar, @rachelbaker, @ramiy, @realloc, @ryan, @ryankienstra, @salcode, @sc0ttkclark, @sebastianpisula, @SergeyBiryukov, @stevegrunwell, @stevenkword, @swissspidy, @thewanderingbrit, @thisisit, @usermrpapa, @valendesigns, @vhomenko, @welcher, @westonruter, @williamsba1, and @wpsmith for their contributions! for their contributions!

#4-5, #week-in-core