Welcome back the latest issue of Week in Core Core is the set of software required to run WordPress. The Core Development Team builds WordPress., covering changes [37720-37800]. Here are the highlights:
- 80 commits
- 33 contributors
- 26 tickets created
- 9 tickets reopened
- 37 tickets closed
Ticket 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.
Accessibility 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)
- Theme Installer, make the “Upload Theme” button… a button.  #35457
- Remove the ARIA roles from the
wp.a11y.speak() live regions.  #36289
Admin (and super admin)
- improve the notice when the sessionStorage autosave is different than the content.  #37025
- Wrap or unwrap the List Table comment_date as comment status changes via Ajax. Introduced in .  #36742
- Make sure that preview and return URLs are URLs. Merges  to supported branches.         
- Separate preview and actions in the site icon control. Reverts . Merge of  to the 4.5 branch 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"..  #36749
- Separate preview and actions in the site icon control. Reverts   #36749
- Clarify documentation for
wp_login_url() and corresponding hooks 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..  #34352
- Improve the summaries and return descriptions for
get_nav_menu_locations().  #37106
- Add a missing summary and
@since version to the DocBlock (phpdoc, xref, inline docs) for
WP_MS_Sites_List_Table::prepare_items().  #36675, #21837, #24833, #33185
- Add white outline for contrast on darker backgrounds. Change red colour in toolbar.  #36638
- after inserting a link detect if the URL A specific web address of a website or web page on the Internet, such as a website’s URL www.wordpress.org is broken, first run.  #36638
- when running
precommit use regex to check which files have been modified.  #36528
L10N Localization, or the act of translating code into one's own language. Also see internationalization. Often written with an uppercase L so it is not confused with the capital letter i or the numeral 1. WordPress has a capable and dynamic group of polyglots who take WordPress to more than 70 different locales.
- Add unit tests for the
override_load_textdomain filter 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..  #36398
- Use the correct variable for the file object.  #14244
- Pass allowed file extensions to Plupload.  #14244
- properly refresh the position of the Plupload shim so it moves over the Select Files button or off the screen. Fixes #37039.  #37039
Multisite 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
- Unifies the APIs for getting a post’s modified date or time with getting a post’s date or time.  #37059
REST API The REST API is an acronym for the RESTful Application Program Interface (API) that uses HTTP requests to GET, PUT, POST and DELETE data. It is how the front end of an application (think “phone app” or “website”) can communicate with the data store (think “database” or “file system”) https://developer.wordpress.org/rest-api/.
- Include X-Robots-Tag: noindex header 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. in REST API responses to prevent endpoints from being indexed by search engines.  #36390
Revisions 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.
Taxonomy 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.
- Improve handling of extensionless filenames. This ensures files retain a filename after sanitization. 
- Restore keyboard navigation of the media grid.  #36900
- Support nested array variables in POST data when saving menus. Merge of  and  to the 4.5 branch.  #36590, #14134
_wp_expand_nav_menu_post_data() for PHP The web scripting language in which WordPress is primarily architected. WordPress requires PHP 5.6.20 or higher 5.2.  #36590
- Support nested array variables in POST data when saving menus.  #36590, #14134
Thanks to @adamsilverstein, @afercia, @akibjorklund, @azaozz, @boonebgorges, @coderste, @coffee2code, @dlh, @DrewAPicture, @ericlewis, @Fab1en, @flixos90, @helen, @imath, @iseulde, @jeremyfelt, @joemcgill, @jorbin, @kraftbj, @lukecavanagh, @m_uysl, @nbachiyski, @neverything, @ocean90, @peterwilsoncc, @polevaultweb, @Props, @rabmalin, @rachelbaker, @rockwell15, @Soean, @swissspidy, and @Viper007Bond for their contributions!