PHP backports for WP 7.1

[t-hamano]

• Theme JSON: Define preset CSS vars for blocks based on feature selectors wordpress-develop#10869
  • Block Supports: Define CSS vars for blocks based on feature selectors #75226
• Custom CSS: Fix custom css feature selector wordpress-develop#11000
  • Custom CSS: Allow defining custom selector for this global styles feature #75799
• Backport: Navigation link: add support to style current menu item via theme.json wordpress-develop#11174
  • Navigation link: add support to style current menu item via theme.json #75736
• Fix: Block pseudo-state styles incorrectly applied to default state wordpress-develop#11226
  • Fix: Block pseudo-state styles incorrectly applied to default state #76326
• Icons: Add label search support to WP_Icons_Registry wordpress-develop#11235
  • Icons API: Support searching in labels; extend classes post-7.0 work #75878
• WP_Theme_JSON: Prevent implicit coercion in to_ruleset wordpress-develop#11236
  • Theme_JSON: Prevent implicit coercion in to_ruleset #76392
• Icons: Enforce strict name validation in register method wordpress-develop#11245
  • Icons: Enforce strict name validation in register method #76079
• Add view config API and endpoint wordpress-develop#11272
  • Site Editor > Pages: move view config to the server #76573
  • Site Editor > Patterns: move config to the server #76734
  • Site Editor > Templates: move config to the server #76622
  • Site Editor > Patterns & Parts: generate sidebar from view config #76823
  • Site Editor > Quick Edit: add form config to endpoint #76953
  • Fields: Tweak excerpt field #76903
  • Fix Gutenberg_REST_View_Config_Controller_7_1 PHP warnings #77290
  • Extract entity view config into a filterable API #78977
  • Experiment: Editor Inspector with DataForm - remove revision panel and add link #79195
  • Experimental: Expand Editor Inspector: Use DataForm experiment to templates #76934
  • View Config API and REST Endpoint: make them core ready #79347
  • Experimental: Expand Editor Inspector: Use DataForm experiment to template parts #79399
• Media: Enable HEIC/HEIF uploads when server lacks image editor support wordpress-develop#11323
  • Media: Add HEIC support using platform capabilities #76731
  • Media: Guard gutenberg_delete_heic_companion_file() against non-string $metadata['original'] #78128
  • Media: Rename HEIC companion metadata key to source_image #79307
• Copy React vendor scripts from Gutenberg, update version number wordpress-develop#11359
  • Build: detect version and generate asset.php for vendor scripts #76811
• Block Supports: Add background gradient support that can combine with background image wordpress-develop#11384
  • Block Supports: Add background gradient support that can combine with background images #75859
• Block Supports: Add min width support to dimension supports wordpress-develop#11465
  • Block Supports: Add min width support to dimensions #76949
• Templates: Add date field wordpress-develop#11474
  • Add date field in templates and template parts #77134
• Icons: Add APIs for collection and icon registration wordpress-develop#11559
  • Icons: Add APIs for collection and icon registration #77260
  • Icons Registry: Allow digits and underscores in icon slugs #79623
  • Icons: Add an icon collections REST endpoint and tighten name rules #79686
• Ensure layout classnames are applied to the inner blocks wrapper wordpress-develop#11598
  • Ensure layout classnames are applied to the inner blocks wrapper and not to its siblings #77408
• RTC Hybrid: Table with awareness in object cache when available. wordpress-develop#11599
  • Fix registered post meta scope #78531
  • RTC Hybrid: Custom table with awareness in object cache. #78045
• Add responsive global styles for blocks wordpress-develop#11706
  • Try responsive global block styles with states #77513
• Editor: Hide Classic Block from inserter wordpress-develop#11712
  • Classic Block: Unwrap experiment to hide it from inserter #77911
  • Classic Block: Use get_post() in wp_declare_classic_block_necessary #78613
  • Classic Block: Port PHPUnit coverage for hiding it from the inserter #79434
• Admin bar: Replace home/odometer dashicon with actual site icon if set wordpress-develop#11781
  • Omnibar: move the 'site icon in admin bar' feature from experiment to 7.1 compat #79807
• Add support for styling block states wordpress-develop#11828
  • Add supports for pseudo states on single block instances #76491
  • Responsive block instance styles #78384
  • Fix inconsistencies in feature selector processing part 2: pseudo block instances #78326
• REST API: Expose size-aware encode quality on attachment responses wordpress-develop#11856
  • Media: Return the filtered wp_editor_set_quality value in the upload response #78420
• fix inconsistencies in global styles feature selectors wordpress-develop#11857
  • Fix inconsistencies in feature selector processing part 1: global styles #78276
• Block Supports: Prevent Additional CSS duplication inside Query Loop wordpress-develop#11859
  • Block Supports: Prevent Additional CSS duplication inside Query Loop #78282
• Editor: Preload REST requests the post editor fetches on mount wordpress-develop#11948
  • Edit Post: Preload the remaining REST requests the editor fires on load #78565
  • Post Editor: Use the correct directory for recent preload improvements #79359
• Add support for layout responsive styles wordpress-develop#11966
  • Add support for layout responsive styles #78543
• Media: Skip Document-Isolation-Policy on the classic-theme site preview (backport GB #78404) wordpress-develop#12004
  • Media: Skip cross-origin isolation on the classic-theme site editor home route #78404
• Media: Add animated GIF to video sideload sizes and companion-file cleanup (backport GB #78410) wordpress-develop#12005
  • Animated GIF to video conversion (via mediabunny) #78410
• Icons API: Add wp_get_icon() to render registered icons as inline SVG wordpress-develop#12010
  • Icons: Add PHP method(s) for rendering inline SVG icons from the registry #78332
• Add textShadow typography support and UI wordpress-develop#12011
  • Global Styles: Add textShadow style support #73320
• Editor: Add excludeCurrent support to the Query Loop block. wordpress-develop#12016
  • Add option to exclude current post from query block #64916
• Elements: Guard against non-string className in render filter wordpress-develop#12028
  • Elements: Guard against non-string className in render filter #78841
  • Elements: Align class name parsing with custom CSS implementation #79023
• Block Visibility: Keep hide-everywhere working after a block opts outof visibility support wordpress-develop#12053
  • Block Visibility: Keep hide-everywhere working after a block opts out of visibility support #78780
• Add support for aspect ratio and related controls in viewport states wordpress-develop#12077
  • Add support for aspect ratio and related controls in viewport states #78795
• Block Bindings: Preserve nested inner blocks when binding rich text wordpress-develop#12113
  • Block Bindings: Preserve nested lists when binding List Item content #79346
• Icons: Use snake_case file_path key in icon registry wordpress-develop#12149
  • Icons: Use snake_case file_path key in icon registry #79100
• Fix responsive element styles front end output wordpress-develop#12159
  • Fix responsive element styles front end output #79135
• KSES: Allow SVG presentation attributes in safe_style_css wordpress-develop#12169
  • KSES: Allow SVG-specific presentation attributes in safe_style_css #79172
• Fix flex child fixed width and introduce max width option wordpress-develop#12172
  • Correct behaviour of flex child fixed width and introduce max width option #79073
• Fix: State styles – clear background-image when hover sets a solid background-color wordpress-develop#12182
  • Fix: State styles – clear background-image when hover sets a solid background-color #78992
• Block Bindings: Enable native List Item content binding wordpress-develop#12204
  • Block bindings : add support to list-item #78947
• Editor: Strip inline note markers from rendered block output wordpress-develop#12215
  • Notes: inline (partial-text) notes via hybrid marker + strip-on-render approach #78218
• Use @ symbol prefix for responsive style states wordpress-develop#12253
  • Style states: Use symbols for property keys to avoid clashes #79210
• Connectors: add application password authentication wordpress-develop#12264
  • Connectors: add application password settings UI #79403
• Media: Sideload external images on the server via a url REST parameter wordpress-develop#12268
  • Image: sideload external images on the server when uploading to the library #79409
• Update view config for DataViews/DataForm in the server wordpress-develop#12288
  • Experimental: Expand DataForm inspector to patterns #79452
  • View config: Add better post type default form #79625
• Grid: add auto placement wordpress-develop#12299
  • Grid: Add option to stretch columns with auto-fit for better layout flexibility #79356
• Editor: prepend_to_selector: optimized with str_replace() wordpress-develop#12306
  • prepend_to_selector: optimized with str_replace() #76556
  • Performance: Follow-up fixes to prepend_to_selector() optimization. #79499
• Block Supports: Guard test for element hover styles with a missing hover selector. wordpress-develop#12312
  • Block Supports: Guard elements hover rendering against missing hover selector #79511
• Backport: Duotone: Use HTML API class list for wrapper class handling wordpress-develop#12324
  • Duotone: Use HTML API class_list for duotone wrapper class handling #79531
• Fix unsetting values in viewport states for grid and constrained layouts wordpress-develop#12326
  • Fix unsetting values in viewport states for grid and constrained layouts #79520
• Style Engine: Preserve important state declarations wordpress-develop#12361
  • Style Engine: Preserve important gradient declarations #79568
• View Config: Add version handling wordpress-develop#12391
  • View Config: Add version handling #79809
• Allow configuring viewport values in theme.json wordpress-develop#12395
  • Allow setting viewport tablet and mobile values in theme.json #79104
• Editor: Restore Classic block in the inserter wordpress-develop#12416
  • Classic block: Remove migration notice and restore inserter availability #79894
• Editor: Parse blocks in Latest Posts full content wordpress-develop#12421
  • Latest Posts: Parse blocks in full content display #74866
  • Blocks: Rename _gutenberg_apply_content_filters() to _wp_apply_content_filters() #80191
  • Blocks: Rename _gutenberg_apply_content_filters() to _wp_apply_content_filters() #80191
• Block Style Variations: Simplify block style variation selector regex wordpress-develop#12429
  • Block Style Variations: Simplify block style variation selector regex #79924
• Block visibility: add theme json opt out wordpress-develop#12447
  • Block visibility: add theme json opt out #76559
• Block Supports: Ensure that custom CSS is output after the block library styles. wordpress-develop#12461
  • Block Supports: Ensure that custom CSS is output after the block library styles #80062
• Enable text alignment for viewport states wordpress-develop#12489
  • Enable text alignment to be set by viewport state #80037
• KSES: Add tabindex to the list of allowed global attributes. wordpress-develop#12493
  • Stabilize Tabs block #80163
• Comments: Allow Notes @mention attributes in comment content (kses) wordpress-develop#12503
  • Notes: Add @mention autocomplete #79604
  • Notes: Arm the mention kses allowance on REST note creation #80221
• REST API: Expose image_strip_meta and image_max_bit_depth in the index wordpress-develop#12508
  • Client Side Media: Honor image_strip_meta and image_max_bit_depth on the client upload path #80218
• Block Supports: Improve handling of block class name to avoid fatal wordpress-develop#12516
  • Block Supports: Improve handling of block class name to avoid fatal #80214
• REST API: Reject non-string custom CSS in the global styles controller wordpress-develop#12549
  • Global Styles: Reject non-string custom CSS in the REST controller #80338
• Media REST API: Fix sideload and finalize for EXIF rotated images wordpress-develop#12550
  • Media REST API: Fix sideload and finalize for EXIF rotated images #80295
• Add support for positioning child blocks inside a Grid block. wordpress-develop#6910
  • Add Column Start and Row Start controls to Grid children #59483
  • Add a Row control to grid layout in manual mode. #60652
  • Try using manualPlacement attribute to set manual grid mode and allow responsive behaviour in both modes. #62777
  • Try inserting blocks directly in empty grid cells #63108
  • Fix responsive behaviour so both column start and column span are taken into account #63464

[t-hamano]

I would like to draw your attention to the core PRs that have not yet been merged as of June 27.

We would appreciate it if you could check the status of these core PRs and commit them by July 15, the scheduled date for the Beta 1 release.

• Theme JSON: Define preset CSS vars for blocks based on feature selectors wordpress-develop#10869 @aaronrobertshaw
• Custom CSS: Fix custom css feature selector wordpress-develop#11000 @aaronrobertshaw
• Backport: Navigation link: add support to style current menu item via theme.json wordpress-develop#11174 @MaggieCabrera
• Fix: Block pseudo-state styles incorrectly applied to default state wordpress-develop#11226 @MaggieCabrera
• Media: Enable HEIC/HEIF uploads when server lacks image editor support wordpress-develop#11323 @adamsilverstein
• Copy React vendor scripts from Gutenberg, update version number wordpress-develop#11359 @jsnajdr
• Block Supports: Add background gradient support that can combine with background image wordpress-develop#11384 @aaronrobertshaw
• Block Supports: Add min width support to dimension supports wordpress-develop#11465 @aaronrobertshaw
• Templates: Add date field wordpress-develop#11474 @ntsekouras
• RTC Hybrid: Table with awareness in object cache when available. wordpress-develop#11599 @peterwilsoncc
• fix inconsistencies in global styles feature selectors wordpress-develop#11857 @tellthemachines
• Editor: Preload REST requests the post editor fetches on mount wordpress-develop#11948 @ellatrix
• Media: Skip Document-Isolation-Policy on the classic-theme site preview (backport GB #78404) wordpress-develop#12004 @adamsilverstein
• Icons API: Add wp_get_icon() to render registered icons as inline SVG wordpress-develop#12010 @t-hamano
• Add textShadow typography support and UI wordpress-develop#12011 @t-hamano
• Block Visibility: Keep hide-everywhere working after a block opts outof visibility support wordpress-develop#12053 @t-hamano
• Update view config for DataViews/DataForm in the server wordpress-develop#12288 @jorgefilipecosta
• Editor: prepend_to_selector: optimized with str_replace() wordpress-develop#12306 @josephscott
• Block Supports: Guard test for element hover styles with a missing hover selector. wordpress-develop#12312 @aaronrobertshaw
• Fix unsetting values in viewport states for grid and constrained layouts wordpress-develop#12326 @tellthemachines
• Add support for positioning child blocks inside a Grid block. wordpress-develop#6910 @tellthemachines

[adamsilverstein]

I am working on a number of backports for client side media changes now that the Gutenberg SHA has been updated in core:

• REST API: Expose size-aware encode quality on attachment responses wordpress-develop#11856 - Merged
• Media: Add animated GIF to video sideload sizes and companion-file cleanup (backport GB #78410) wordpress-develop#12005 - Merged
• REST API: Add dimension validation to sideload endpoint wordpress-develop#11100 - Merged
• Code Quality: Add PHPStan type coverage for media and upload functions wordpress-develop#12313 - Merged
• Media: Skip Document-Isolation-Policy on the classic-theme site preview (backport GB #78404) wordpress-develop#12004 - Merged
• REST API: Support registering one sideloaded file under multiple sizes (backport GB #77036) wordpress-develop#12001 - Merged
• Media: Enable HEIC/HEIF uploads when server lacks image editor support wordpress-develop#11323 - Merged
• REST API: Expose per-attachment output format and progressive flags on attachment responses wordpress-develop#12007 - Merged
• REST API: Add tests for the sideload convert_format boolean arg wordpress-develop#12002 - Merged

[adamsilverstein]

Additional backports for client-side media:

• Media: Sideload external images on the server via a url REST parameter wordpress-develop#12268 - Merged
• Editor: Strip inline note markers from rendered block output wordpress-develop#12215 - Merged

[adamsilverstein]

Additional backport for Notes "@" reaction feature:

• Comments: Allow Notes @mention attributes in comment content (kses) wordpress-develop#12503

Additional backports for client-side media

• REST API: Expose image_strip_meta and image_max_bit_depth in the index wordpress-develop#12508