Week in Core, Feb. 9-16 2016

Welcome back the latest issue of Week in Core, covering changes [36505-36540]. Here are the highlights:

• 35 commits
• 37 contributors
• 67 tickets created
• 3 tickets reopened
• 52 tickets closed

Ticket 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 Slack channel.

Code Changes

Accessibility

• Reduce the WordPress shades of grey, first part. [36537] #35783
• Improve the color contrast ratio for the TinyMCE button icons. Also, tries to use the new grays from the Design Handbook wherever applicable. [36528] #35604

Build/Test Tools

• Make sure fixtures have empty post_content in search test. Introduced in [36278]. [36520] #3102
• Improve Automated Feed Tests [36519] #35160
• Unit test for wp_get_comment_fields_max_lengths(). This adds tests for the comment form field lengths returned by wp_get_comment_fields_max_lengths(). Replaces unit test removed in r36514. [36515] #10377

• In the comments list table, only link rows inside the “Submitted On” column to the comment if it is publicly viewable. [36521] #35279
• Change wp_get_comment_column_max_length() function to wp_get_comment_fields_max_lengths() for consolidation and better fallbacks. [36514] #10377
• Set the $comment global in comment_form_title(). [36512] #35624

Customizer

• Add a user-friendly way to preview site responsiveness for desktop, tablet, and mobile. [36532] #31195
• Ensure that nav menu items can be shift-clicked to edit in secondary instances of the same nav menu. Amends [36383]. [36523] #32681
• Hide widgets re-order button when no re-ordering is possible. [36522] #35533
• Reduce the spinner re-painted area to the smallest possible one. [36518] #35649

Editor

• Introduce {$taxonomy}_term_edit_form_top action to edit-tag-form.php. This new action gives developers a place to output content at the beginning of the form element on edit-tags.php. [36526] #35252

i18n

• Prevent is_textdomain_loaded() from returning true even if there are no translations for the domain. [36538] #21319

Menus

• Allow larger menus to be created in the Edit Menu screen. This was attempted previously in [36506] which was reverted in [36507]. Some form fields were not being slurped into the form’s JSON representation, and it did not scale for a site with many posts. This approach [36510] #14134

Meta

• In delete_metadata(), only invalidate cache for affected objects. [36511] #35797
• Don’t double-unslash meta key when update_metadata() falls back on add_metadata(). [36509] #35795

Query

• Improve WP_Query lazyloading logic, for better performance. [36524] #35454, #35816

REST API

• Apply rest_post_dispatch to embedded responses. [36536] #35628
• Allow explicit HEAD callbacks. HEAD callbacks can now be registered independently, with the GET callback still used as a fallback. [36535] #34841
• Add routing args to rest_dispatch_request filter. This allows requests to be hijacked via the filter more easily. [36534] #35507
• Add support for CURIEs. [36533] #34729
• Don’t display errors during REST API requests. [36530] #34915
• Add helper function to get server instance. This allows using rest_do_request() outside of the API itself easily. [36529]

Taxonomy

• Introduce publicly_queryable taxonomy argument. If not provided explicitly, the value of publicly_queryable is inherited from public. [36525] #34491
• Bail from get_term() if a filter returns an object that is not a WP_Term. This prevents fatal errors in certain cases. [36516] #35808
• Remove unused variable from get_terms(). Unused since [31284]. [36508] #35784

Themes

• Use the attachment ID as the key in get_uploaded_header_images(). Prevents missing header images when an image has the same name as another header image. [36539] #31786

TinyMCE

• Fix removing a space before inline tags when applying formatting shortcuts. [36513] #35798

Props

Thanks to @danielbachhuber, @adamsilverstein, @afercia, @azaozz, @boonebgorges, @celloexpressions, @Chouby, @d4z_c0nf, @danielbachhuber, @DrewAPicture, @ericlewis, @Fab1en, @flixos90, @folletto, @jdgrimes, @joehoyle, @joelerr, @jorbin, @jrf, @michaelarestad, @nacin, @neoxx, @ocean90, @rabmalin, @rachelbaker, @rahalaboulfeth, @rmccue, @rockwell15, @sirbrillig, @stevenkword, @swissspidy, @TimothyBlynJacobs, @tmuikku, @valendesigns, @welcher, @westonruter, and @WisdmLabs for their contributions!

Week in Core, Feb. 9-16 2016 by Eric Binnion was originally posted at https://make.wordpress.org/core/2016/02/17/week-in-core-feb-9-16-2016/