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39637 Commits

Author SHA1 Message Date
desrosj 9380cf2995 WordPress 5.2.4. 
Built from https://develop.svn.wordpress.org/branches/5.2@46508


git-svn-id: http://core.svn.wordpress.org/branches/5.2@46305 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-10-14 20:06:55 +00:00
whyisjake e9ecfd078e REST API: Send a Vary: Origin header on GET requests. 
Add this header on all GET requests to prevent cached requests.

Fixes some code dulication from [46484] and backports the changes from [46484] to the 5.2 branch.
Props darthhexx, davidbinda, nickdaugherty, whyisjake.

Built from https://develop.svn.wordpress.org/branches/5.2@46487


git-svn-id: http://core.svn.wordpress.org/branches/5.2@46285 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-10-14 17:44:54 +00:00
whyisjake 0ca56956ae Administration: Ensure that admin referer nonce is valid. 
Coding standards, ensure that nonce is valid with identical, rather then equal operator.

Backports [46477] to the 5.2 branch.
Props vortfu, xknown, whyisjake.

Built from https://develop.svn.wordpress.org/branches/5.2@46486


git-svn-id: http://core.svn.wordpress.org/branches/5.2@46284 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-10-14 17:34:53 +00:00
whyisjake cbc773dcbb Filesystem API: Prevent directory travelersals when creating new folders. 
Reject file paths that contain sub-directory paths.

Props iandunn, xknown, sstoqnov, whyisjake.

Built from https://develop.svn.wordpress.org/branches/5.2@46484


git-svn-id: http://core.svn.wordpress.org/branches/5.2@46282 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-10-14 16:34:53 +00:00
whyisjake e5e18e9b15 Filesystem API: Prevent directory travelersals when creating new folders. 
Reject file paths that contain sub-directory paths.

Backports [46476] to the 5.2 branch.

Props iandunn, xknown, sstoqnov, whyisjake.

Built from https://develop.svn.wordpress.org/branches/5.2@46482


git-svn-id: http://core.svn.wordpress.org/branches/5.2@46280 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-10-14 16:13:53 +00:00
whyisjake c4a25f9386 Add merge information missed in r46474-46475. 
Built from https://develop.svn.wordpress.org/branches/5.2@46481


git-svn-id: http://core.svn.wordpress.org/branches/5.2@46279 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-10-14 16:09:51 +00:00
whyisjake f0335c6a8b HTTP API: Protect against hex interpretation. 
Return earlier from wp_http_validate_url().

Props: iandunn, xknown, voldemortensen, whyisjake.

Built from https://develop.svn.wordpress.org/branches/5.2@46480


git-svn-id: http://core.svn.wordpress.org/branches/5.2@46278 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-10-14 15:52:53 +00:00
whyisjake f82ed753cf Query: Remove the static query property. 
Prevent unauthenticated views of publicly queryables content types.

Props aaroncampbell, whyisjake, nickdaugherty, xknown.

Built from https://develop.svn.wordpress.org/branches/5.2@46479


git-svn-id: http://core.svn.wordpress.org/branches/5.2@46277 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-10-14 15:51:54 +00:00
Sergey Biryukov c83ea95120 Formatting: In `wp_validate_redirect()`, normalize the path when validating the location for relative URLs, to account for Windows paths. 
Props peterwilsoncc, rconde, jmmathc, mat-lipe, Sixes, justinahinon, cmagrin, daxelrod, SergeyBiryukov.
Merges [46472] to the 5.2 branch.
Fixes #47980.
Built from https://develop.svn.wordpress.org/branches/5.2@46473


git-svn-id: http://core.svn.wordpress.org/branches/5.2@46271 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-10-14 11:04:55 +00:00
desrosj 5753d19fe4 Build/Test Tools: Remove PHP 7.4 and nightly builds from Travis. 
See #48225.
Built from https://develop.svn.wordpress.org/branches/5.2@46406


git-svn-id: http://core.svn.wordpress.org/branches/5.2@46205 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-10-05 16:58:53 +00:00
whyisjake e4b3059eb2 Remove the extra call for wp-sanitize from the script loader. 
Merges [46073] to the 5.2 branch.
Fixes #47986.


Built from https://develop.svn.wordpress.org/branches/5.2@46074


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45886 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-09-06 21:56:54 +00:00
Sergey Biryukov fd1d9bb298 Post WordPress 5.2.3 version bump. 
Built from https://develop.svn.wordpress.org/branches/5.2@46065


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45877 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-09-05 02:16:54 +00:00
whyisjake e3194da7eb WordPress 5.2.3. 
Built from https://develop.svn.wordpress.org/branches/5.2@46047


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45859 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-09-04 22:09:18 +00:00
desrosj 2df5a45321 Help/About: Update the About page for 5.2.3. 
Props whyisjake, desrosj.
Fixes #47923.
Built from https://develop.svn.wordpress.org/branches/5.2@46046


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45858 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-09-04 22:08:25 +00:00
Sergey Biryukov cbd492abd3 Coding Standards: Fix WPCS issue in [45990]. 
Merges [46019] to the 5.2. branch.
Built from https://develop.svn.wordpress.org/branches/5.2@46022


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45833 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-09-04 21:46:48 +00:00
desrosj a3c199b473 Fix for URL sanitization in `wp_kses_bad_protocol_once()`. 
Merges [45997] to the 5.2 branch.

Props irsdl, sstoqnov, whyisjake.
Built from https://develop.svn.wordpress.org/branches/5.2@46000


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45811 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-09-04 17:57:52 +00:00
Sergey Biryukov 50f2f05956 Improve handling the existing `rel` attribute in `wp_rel_nofollow_callback()`. 
Merges [45990] to the 5.2 branch.
Props xknown, sstoqnov.
Built from https://develop.svn.wordpress.org/branches/5.2@45991


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45802 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-09-04 17:39:51 +00:00
whyisjake affedce0a8 Update wp.a11y.speak() to sanitize HTML before display. 
Merges [45979] to the 5.2 branch

Props iandunn, adamsilverstein, sstoqnov, peterwilsoncc

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git-svn-id: http://core.svn.wordpress.org/branches/5.2@45800 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-09-04 17:23:52 +00:00
Sergey Biryukov 684ef4e3a7 Improve URL validation in `wp_validate_redirect()`. 
Merges [45971] to the 5.2 branch.
Props vortfu, whyisjake, peterwilsoncc.
Built from https://develop.svn.wordpress.org/branches/5.2@45972


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45783 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-09-04 16:58:52 +00:00
Sergey Biryukov 4315d85d65 Escape the output in `wp_ajax_upload_attachment()`. 
Merges [45936] to the 5.2 branch.
Props whyisjake, sstoqnov.
Built from https://develop.svn.wordpress.org/branches/5.2@45938


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45749 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-09-04 16:15:51 +00:00
whyisjake 6a63bf0361 Remove _convert_urlencoded_to_entities() from the get_the_content() callback. 
Props vortfu, whyisjake, peterwilsoncc

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git-svn-id: http://core.svn.wordpress.org/branches/5.2@45748 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-09-04 16:10:52 +00:00
whyisjake c4999912e7 WordPress 5.2.3 Release Candidate 1 version bump. 
Built from https://develop.svn.wordpress.org/branches/5.2@45880


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45691 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-22 17:57:52 +00:00
whyisjake 6e45fa6779 WordPress 5.2.3 Release Candidate 2 
Built from https://develop.svn.wordpress.org/branches/5.2@45879


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45690 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-22 17:48:52 +00:00
whyisjake dbfcb74609 WordPress 5.2.3 Release Candidate 1 
Built from https://develop.svn.wordpress.org/branches/5.2@45878


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45689 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-22 17:21:52 +00:00
Sergey Biryukov 6b8460ee43 Customizer: Trim whitespace from custom link URLs. 
This complements a similar fix for the Menus screen in [45655].

Props donmhico, audrasjb.
Merges [45869] to the 5.2 branch.
Fixes #47888. See #47723.
Built from https://develop.svn.wordpress.org/branches/5.2@45870


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45681 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-21 00:29:52 +00:00
Sergey Biryukov 7a64dfb557 Docs: Update `@since` tag for new JS functions and variables introduced in [45572]. 
Props garrett-eclipse.
Merges [45867] to the 5.2 branch.
See #47145.
Built from https://develop.svn.wordpress.org/branches/5.2@45868


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45679 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-20 22:55:52 +00:00
Sergey Biryukov 5bb75cf4fd Accessibility: Make the Media modal an ARIA modal dialog. 
For a number of years, the Media modal missed an explicit ARIA role and the required attributes for modal dialogs.

This was confusing for assistive technology users, since they may not realize they're inside a dialog, and that consequently the keyboard interactions may be different from the rest of the page. Lack of an explicit label for the dialog was confusing as well, since assistive technology users didn't have an immediate sense of what the dialog is for.

This change makes the Media modal meet the ARIA Authoring Practices recommendations, helping users better understand the purpose and interactions with the modal. Also, it makes sure to hide the rest of the page content from assistive technologies, until support for `aria-modal="true"` improves.

Additionally:
- moves the modal H1 heading to the beginning of the modal content 
- changes the modal left menu position to make visual and DOM order match 
- improves the `wp.media.view.FocusManager` documentation

Props afercia.
Merges [45572] to the 5.2 branch.
Fixes #47145.
Built from https://develop.svn.wordpress.org/branches/5.2@45866


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45677 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-20 22:42:51 +00:00
Sergey Biryukov f6a419e564 Accessibility: Fix the `alt` attribute of the Gallery images within the Classic Editor. 
Passes the images `alt` attribute value to the Gallery template used within the Classic Editor.

Props yarnboy, wpboss.
Merges [45725] to the 5.2 branch.
Fixes #47687.
Built from https://develop.svn.wordpress.org/branches/5.2@45865


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45676 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-20 19:15:52 +00:00
Sergey Biryukov 49d9d2dc57 Twenty Seventeen: Correct height for a Button block without text. 
Props ianbelanger, laurelfulford, nayana123.
Merges [45764], [45861], and [45863] to the 5.2 branch.
Fixes #47414.
Built from https://develop.svn.wordpress.org/branches/5.2@45864


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45675 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-20 19:13:54 +00:00
Sergey Biryukov 61461dfa07 Accessibility: Fix the order of the Previous, Next, and Close buttons in the Attachment Details modal. 
Making the visual and DOM order match benefits keyboard users who navigate documents sequentially and expect the focus order to be consistent with the sequential reading order.

Props afercia.
Merges [45506] to the 5.2 branch.
Fixes #47458.
Built from https://develop.svn.wordpress.org/branches/5.2@45849


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45660 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:55:53 +00:00
Sergey Biryukov 6faaa121a8 Block Editor: Fix the link to the classic editor when incompatible meta boxen are detected. 
Props tmatsuur, mukesh27.
Merges [45618] to the 5.2 branch.
Fixes #45935.
Built from https://develop.svn.wordpress.org/branches/5.2@45848


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45659 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:53:53 +00:00
Sergey Biryukov bd7d21bc49 Twenty Seventeen: Correct the CSS selectors intended to fix hover colors for MediaElement controls. 
This is a follow-up to the previous fix in [45146], which didn't work as expected.

Props ryokuhi.
Merges [45576] to the 5.2 branch.
Fixes #47543. See #40843.
Built from https://develop.svn.wordpress.org/branches/5.2@45847


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45658 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:49:51 +00:00
Sergey Biryukov cfce1bcf97 Twenty Seventeen: Accessibility: Add missing focus state for native audio and video embeds. 
Props kjellr, karlgroves.
Merges [45425] to the 5.2 branch.
Fixes #47190.
Built from https://develop.svn.wordpress.org/branches/5.2@45846


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45657 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:48:53 +00:00
Sergey Biryukov 0eb803e871 Twenty Nineteen: Revise Latest Posts block styles to support post content options. 
Props kjellr, ianbelanger.
Merges [45761] to the 5.2 branch.
Fixes #47340.
Built from https://develop.svn.wordpress.org/branches/5.2@45845


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45656 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:46:53 +00:00
Sergey Biryukov fc5723d396 Upgrade/Install: Bring some consistency to installation screen styles. 
* Include `forms.css` and `l10n.css`, for consistency with login screen and other admin screens.
* Remove redundant `@import` directives from `login.css` for files already declared as dependencies.
* Adjust margin on password strength meter for consistency with other fields.
* Increase font size for "You will need this password to log in" notice.
* Fix misaligned icon on "Hide" button for the password.

Props iseulde, dan@micamedia.com, bassgang, cdog, johnbillion, nmenescardi, mukesh27, alpipego, SergeyBiryukov.
Merges [45673] to the 5.2 branch.
Fixes #35776, #43483, #47757, #47758.
Built from https://develop.svn.wordpress.org/branches/5.2@45844


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45655 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:44:53 +00:00
Sergey Biryukov 8cf11a944f Customize: Make the color picker close when clicking on the empty area on the right. 
Props monikarao, afercia.
Merges [45722] to the 5.2 branch.
Fixes #47693.
Built from https://develop.svn.wordpress.org/branches/5.2@45843


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45654 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:39:51 +00:00
Sergey Biryukov c1c7188c8a Accessibility: Toolbar: Make the `min-width` value for `#wpadminbar` at `782px` breakpoint consistent with that of `<body>`. 
This ensures that the "My Account" toolbar item stays visible at high zoom levels.

Props isabel_brison, chetan200891.
Merges [45684] to the 5.2 branch.
Fixes #47603.
Built from https://develop.svn.wordpress.org/branches/5.2@45842


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45653 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:37:52 +00:00
Sergey Biryukov 4ef44b9ab0 Media: Reduces the bulk media options to have one primary button. 
This fixes where 2 primary buttons were showing for bulk actions within media trash.

Props garrett-eclipse, afercia, ianbelanger, SergeyBiryukov, karmatosed.
Merges [45701] to the 5.2 branch.
Fixes #46757, #46758
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git-svn-id: http://core.svn.wordpress.org/branches/5.2@45652 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:34:52 +00:00
Sergey Biryukov 90c221a67c Accessibility: Improve the media views upload Dismiss Errors button. 
- makes the Dismiss Errors button visible in the media views inline uploader
- avoids a focus loss when activating the Dismiss Errors button

See the related GitHub issue from the WPCampus accessibility audit https://github.com/WordPress/gutenberg/issues/15354

Props afercia.
Merges [45376] to the 5.2 branch.
Fixes #47113.
Built from https://develop.svn.wordpress.org/branches/5.2@45840


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45651 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:31:52 +00:00
Sergey Biryukov ad85b0fe1d Accessibility: Fix the headings hierarchy in the legacy Custom Background and Custom Header pages. 
Props afercia.
Merges [45411] to the 5.2 branch.
Fixes #47386.
Built from https://develop.svn.wordpress.org/branches/5.2@45839


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45650 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:29:53 +00:00
Sergey Biryukov b967202110 Media: Make sure the bottom media toolbar content is fully visible with Internet Explorer 11. 
Props mspatovaliyski, afercia.
Merges [45526] to the 5.2 branch.
Fixes #47502.
Built from https://develop.svn.wordpress.org/branches/5.2@45838


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45649 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:26:51 +00:00
Sergey Biryukov e256b2897b Formatting: Don't convert smilies in ignored tags that have attributes. 
Smilies in ignored tags are not supposed to be converted to emoji, but this can malfunction if the tag has attributes. For example, the Preformatted block with add a `class` to the `<pre>` tag.

Props pento, jikamens.
Merges [45569] to the 5.2 branch.
Fixes #47489.
Built from https://develop.svn.wordpress.org/branches/5.2@45837


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45648 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:24:53 +00:00
Sergey Biryukov 303034e393 Editor: Correct `since` annotation for the `excerpt_allowed_blocks` filter. 
Props mukesh27, rabmalin.
Merges [45284] to the 5.2 branch.
Fixes #47079.
Built from https://develop.svn.wordpress.org/branches/5.2@45836


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45647 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:18:53 +00:00
Sergey Biryukov 7b8b2a7f5c Accessibility: Improve settings tables and forms after [45403]. 
- adds `role="presentation"` to the edit comment table 
- removes a few pointless `<fieldset>` elements
- adds a few missing `<label>` elements
- adds the CSS class `class="td-full"` to table rows spanning to multiple cells
- adds explicit `scope="row"` attribute to the table headers in `options-permalink.php`: this table is better communicated as data table 
- uses consistent label association in the "Privacy Settings" page
- in the installation page "Set up your database connection": associates descriptions to their inout fields using `aria-describedby`
- improves the link to gravatar.com in the `user-edit.php` page

Props afercia.
Merges [45416] to the 5.2 branch.
See #46899.
Fixes #47390.
Built from https://develop.svn.wordpress.org/branches/5.2@45835


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45646 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:15:52 +00:00
Sergey Biryukov 18987f840c Accessibility: Make sure layout tables across the admin are correctly linearized. 
Adds `role="presentation"` to the `<table>` elements used for layout purposes.

Ideally, HTML tables should be used for tabular data. When tables are used for layout purposes, it's important to remove any native semantics so that assistive technologies can correctly announce the table content in a linearized fashion.

Props greatislander, afercia.
Merges [45403] to the 5.2 branch.
See #46899.
Built from https://develop.svn.wordpress.org/branches/5.2@45834


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45645 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:13:54 +00:00
Sergey Biryukov 7b82b8fd18 Site Health: Use correct variable when checking PHP requirements for a plugin update in `WP_Plugins_List_Table::single_row()`. 
Props diddledan, sharaz, vaishalipanchal, afragen.
Merges [45750] to the 5.2 branch.
Fixes #47835.
Built from https://develop.svn.wordpress.org/branches/5.2@45833


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45644 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:09:52 +00:00
Sergey Biryukov 7ab695d1d6 Menus: Trim whitespace from custom link URLs. 
Props majemedia, SergeyBiryukov.
Merges [45655] and [45656] to the 5.2 branch.
Fixes #47723.
Built from https://develop.svn.wordpress.org/branches/5.2@45832


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45643 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:07:52 +00:00
Sergey Biryukov d8a0523887 Editor: Fix undefined `$locked` var in edit-form-blocks.php when the `show_post_locked_dialog` filter is used to disable displaying of the dialog. 
Props aprea.
Merges [45564] to the 5.2 branch.
Fixes #47604.
Built from https://develop.svn.wordpress.org/branches/5.2@45831


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45642 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:04:52 +00:00
Sergey Biryukov e81b064b0b Customize: Fix text direction for color picker in RTL. 
Props vjik, SergeyBiryukov.
Merges [45626] to the 5.2 branch.
Fixes #47688. See #23740.
Built from https://develop.svn.wordpress.org/branches/5.2@45830


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45641 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:02:52 +00:00
Sergey Biryukov 22eb801023 Block Editor: Avoid a PHP warning when a theme adds an editor style with an empty filename. 
Props pento, gqevu6bsiz.
Merges [45619] to the 5.2 branch.
Fixes #45739.
Built from https://develop.svn.wordpress.org/branches/5.2@45829


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45640 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2019-08-19 04:00:52 +00:00