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 [38456-38570]. Here are the highlights:

• 114 commits
• 56 contributors
• 92 tickets created
• 6 tickets reopened
• 72 tickets closed
• WordPress 4.6.1 was released

Ticketticket Created for both bug reports and feature development on the bug tracker. numbers based on trac timeline for the period above. The following is a summary of commits, organized by component.

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 CustomizerCustomizer Tool built into WordPress core that hooks into most modern themes. You can use it to preview and modify many of your site’s appearance settings. and Theme Installer initial focus. [38520] #29158, #33228, #27705
• Make links in the Customizer underlined by default. [38503] #37527

Administration

• Use a bool when when a bool is called for [38502] #37634
• Use #fff instead of white [38501] #37576

Bootstrap

• class-wp-locale.php needs to be require_once()-ed. [38496] #37827
• goodnight sweet prince. [38480] #36335
• do not go gentle into that good night r38411, r38412, and parts of r38389. [38470] #36335
• Check that ini_get_all() exists before calling it, allows us to work around hosts who disable the function for “security purposes”. Merges [38431] to the 4.6 branchbranch A directory in Subversion. WordPress uses branches to store the latest development code for each major release (3.9, 4.0, etc.). Branches are then updated with code for any minor releases of that branch. Sometimes, a major version of WordPress and its minor versions are collectively referred to as a "branch", such as "the 4.0 branch".. [38460] #37680

Comments

• Revert [38497] Restore direct SQL query when fetching descendants. [38537] #37696, #37966
• Don’t do direct SQL query when fetching decendants. Merge of [38446] to the 4.6 branch. [38497] #37696

Customize

• Fix php warning due to WP_Customize_Manager::prepare_setting_validity_for_js() incorrectly assuming that WP_Error will only ever have arrays in its $error_data. [38513] #37890
• Introduce paneVisible state and ensure pane is visible when a construct is expanded (or focused). Fixes #36678. [38492] #27403, #36678
• Fix 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. by re-using the add_new_item post type label instead of using a post type name in a generic string. [38479] #34923, #37895
• Use new $status_code parameter for wp_send_json_error() instead of calling status_header() separately. [38478] #35666, #37897
• Improve handling of active state for dynamically-created controls/sections/panels. [38464] #37270

Database

• Find the correct table names in DELETE queries with table aliases [38507] #37660

Docs

• Update the $message parameter for _default_wp_die_handler() to notate that it can also accept a WP_Error object. [38518] #37770
• Correct @since entry for the smilies 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. added in [38504]. [38505] #35905
• Move term_description() reference from filter docblockdocblock (phpdoc, xref, inline docs) to get_the_archive_description() function docblock. [38495] #37259

Editor

• fix jumpiness on pressing backspace and delete in the Text editor. Merge of [38426] to the 4.6 branch. [38487] #37690

Embeds

• Clarify some assertion failure messages and correct a test URLURL A specific web address of a website or web page on the Internet, such as a website’s URL www.wordpress.org for Twitter timelines. [38514] #32360
• Update the oEmbed provider test suite. [38512] #32360

Formatting

• Allow KSES custom elements with hyphens. [38511] #34105

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.

• Handle an edgecase within the URI parsing library included in Requests, where if a double slash exists at the start of the path the URL is passed to cURL malformed. Merge of [38429] to the 4.6 branch. [38485] #37733
• Accept non-string values in cookies, fixing a regressionregression A software bug that breaks or degrades something that previously worked. Regressions are often treated as critical bugs or blockers. Recent regressions may be given higher priorities. A "3.6 regression" would be a bug in 3.6 that worked as intended in 3.5. since 4.5. Merges [38430] to the 4.6 branch. [38461] #37768

HTTP 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.

• Revert changes to wp_parse_url() while PHPPHP The web scripting language in which WordPress is primarily architected. WordPress requires PHP 5.6.20 or higher 5.2 errors are investigated. [38456] #36356

General

• revert [38386], functions.php was probably too tempting for some people to not load by itself. [38469] #36335
• revert [38467], wp_is_IE() should not exist. [38468] #37699
• use a new function, wp_is_IE(), instead of the $is_IE global in a number of places. [38467] #37699
• use get_bloginfo( 'version' ) instead of global $wp_version in several locations – excluding those locations which reload version.php mid-flight. [38459] #37699

Help/About

• Remove an outdated help sentence on “My Sites” screen. [38474] #37896

I18N

• Add translator comments for XML-RPC strings with placeholders. [38510] #37792

Login and Registration

• Change login label to Username or Email Address for clarity. [38477] #37871

Media

• Sanitize upload filename. [38538] #

Menus

• Correct the docblocks for Walker_Nav_Menu, wp_nav_menu(), and walk_nav_menu_tree(). See #35206, #37770 [38559] #24587, #35206, #37770
• Add white space option to wp_nav_menu() and wp_list_pages(). [38523] #35206

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

• Deprecate wp_get_network(). [38515] #37553
• use get_current_site() instead of $GLOBALS['current_site'] (stop yelling!) in a few remaining spots. [38458] #37699
• use get_current_blog_id() where applicable, in lieu of plucking the $blog_id global from outer space. [38457] #37699

Post Thumbnails

• Prevent post thumbnail previews from spilling into other images. Merge of [38433] to the 4.6 branch. [38476] #37697

Press This

• don’t check for already-hoisted global in press-this.php. [38466] #37699
• in wp_ajax_press_this_save_post() and wp_ajax_press_this_add_category(), don’t check for a global instance. WP_Press_This is a Controller, but not really a Singleton. This also keeps it from being a pluggable class, which it is right now. [38465] #37699
• in get_shortcut_link(), just check a class constant on WP_Press_This instead of instantiating the object and reading an instance prop. [38462] #37699

Query

• ‘orderby=include’ should support comma-separated lists. [30052] assumed that ‘include’ would be an array. [38500] #37904
• Use AND in a SQL query rather than &&. [38491] #37903
• r38356, you were not long for this world. [38471] #37830
• in wp_old_slug_redirect(), use get_query_var() instead of importing and touching the global $wp_query directly. [38463] #37699

Role/Capability

• Correct the multisite cap tests after [38521]. See #32394 [38522] #35614, #32394
• Split 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. and primitive capabilities in the helper functions in the roles and capability tests so primitive capability tests can be made more accurate. See #32394 [38521] #35614, #32394
• Add two missing meta capabilities to the caps tests. [38482] #32394

Script Loader

• Correct default value for $src in wp_enqueue_script() and wp_enqueue_style(). [38519] #37770
• Close the 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.) in wp_resource_hints(). Merge of [38443] and [38447] to the 4.6 branch. [38473] #37800

Shortcodes

• Add the pre_do_shortcode_tag filter. [38506] #37906

Smilies

• Add the smilies filter. [38504] #35905

TaxonomyTaxonomy A taxonomy is a way to group things together. In WordPress, some common taxonomies are category, link, tag, or post format. https://codex.wordpress.org/Taxonomies#Default_Taxonomies.

• Introduce some taxonomy capability tests in preparation for introducing more fine grained capabilities for terms. [38516] #35614
• Introduce wp_insert_term_data and wp_update_term_data filters for altering term data before it is inserted/updated in the database. [38484] #22293
• Correct the function description for wp_ajax_add_link_category(). [38490] #37770
• Update various docs for parameters which are now WP_Term objects. See #14162 [38489] #37770, #14162

Template

• After [38486], actually use the $description variable in get_the_archive_description(). [38493] #37259
• In get_the_archive_description(), add support for author archives. [38486] #37259

Text Changes

• Improve Error messages in XML-RPC [38509] #37792
• Improve the timezone setting description in General Settings. Makes more clear users can set either a city or a UTC timezone offset. [38483] #34789

TinyMCE

• fix toolbars alignment in RTL. Merge of [38349] to the 4.6 branch. [38488] #37760
• change the default font for the vi localeLocale A locale is a combination of language and regional dialect. Usually locales correspond to countries, as is the case with Portuguese (Portugal) and Portuguese (Brazil). Other examples of locales include Canadian English and U.S. English. to the same stack as he_IL. Merge of [38427] to the 4.6 branch. [38472] #37755

Toolbar

• Add unit tests for edit links. [38508] #22247

Upgrade/Install

• After [37687], fix the number of params passed to the upgrade hooksHooks In WordPress theme and development, hooks are functions that can be applied to an action or a Filter in WordPress. Actions are functions performed when a certain event occurs in WordPress. Filters allow you to modify certain functions. Arguments used to hook both filters and actions look the same.. Merge of [38415] to the 4.6 branch. [38475] #37731
• Sanitize file name in File_Upload_Upgrader. [38524] #

Upload

• Correct encoding issue in swfupload.js, introduced in [29479]. [38517] #29199

Users

• After [33766], don’t reset the password when clicking “Show Password” and then “Cancel” on Add New User screen. [38494] #37902, #33419

Pass $profileuser parameter to user_profile_picture_description filter on “Edit User” screen. [38481] #37379

Widgets

• Make the Delete/Remove links red. For consistency and accessibility, all the UIUI User interface controls that perform destructive actions should be red. [38536] #35622, #37016

## Props

Thanks to @afercia, @Akeif, @akibjorklund, @andrewp, @atimmer, @azaozz, @batmoo, @boonebgorges, @celloexpressions, @Chaos, @curdin, @dd32, @deremohan, @dlh, @DrewAPicture, @Engine, @flixos90, @Frank, @fronaldaraujo, @GaryJ, @geminorum, @gitlost, @GrantDerepas, @henrywright, @ibachal, @ideag, @ionutst, @jeremyfelt, @joemcgill, @johnbillion, @johnjamesjacoby, @johnpgreen, @jorbin, @Klein, @lukecavanagh, @monikarao, @mte90, @netweb, @nmt90, @patilswapnilv, @pento, @peterwilsoncc, @PieWP, @Presskopp, @ramiy, @Rarst, @sayedwp, @scrappy@…, @SergeyBiryukov, @smerriman, @swissspidy, @TimothyBlynJacobs, @turtlepod, @westonruter, and @wonderboymusic for their contributions!

#4-1, #week-in-core