Commit Graph

36529 Commits

Author SHA1 Message Date
Andrea Fercia 55b6ee7e56 Media: Clean-up some MediaElementJS CSS: no more needed after [40642].
See #40707, #32417, #39994, #39995, #30281.

Built from https://develop.svn.wordpress.org/trunk@40647


git-svn-id: http://core.svn.wordpress.org/trunk@40510 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-12 07:00:45 +00:00
Dion Hulse 6a525dd831 Bump Akismet external to 3.3.2
See #40002


git-svn-id: http://core.svn.wordpress.org/trunk@40509 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-12 04:09:13 +00:00
Andrea Fercia bab7eb143e Accessibility: Change the "Show details" links in the update core screen to buttons.
These controls toggle the visibility of the update progress: they perform an action
therefore they should be buttons. Also:
- uses `aria-expanded` to communicate the toggle button state
- removes some inline JavaScript
- when clicking the toggle buttons, the progress details get moved with JavaScript after the button: this helps users of assistive technologies in finding them and makes the UI a bit more intuitive

Props Cheffheid, afercia.
See #26504.
Fixes #40453.

Built from https://develop.svn.wordpress.org/trunk@40646


git-svn-id: http://core.svn.wordpress.org/trunk@40507 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 23:50:41 +00:00
Andrew Ozz 8c46657c9d TinyMCE: update to 4.6.1. Changelog: https://www.tinymce.com/docs/changelog/#version461-may102017
Fixes #40727.
Built from https://develop.svn.wordpress.org/trunk@40645


git-svn-id: http://core.svn.wordpress.org/trunk@40506 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 23:12:40 +00:00
Andrew Ozz da92cce494 TinyMCE: prevent removing of the temp link element when opening the advanced link dialog to insert new link.
Part props figureone for finding the cause.
Fixes #40558.
Built from https://develop.svn.wordpress.org/trunk@40644


git-svn-id: http://core.svn.wordpress.org/trunk@40505 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 23:04:40 +00:00
Andrea Fercia 274596b8ef Accessibility: Add "(opens in a new window)" screen reader text to the "News-Nearby Events" dashboard widget footer links.
- standardizes similar messages in core to always use `(opens in a new window)`
- adds translators comments
- hides the dashicons with `aria-hidden="true"`, see #40428

Fixes #40733.

Built from https://develop.svn.wordpress.org/trunk@40643


git-svn-id: http://core.svn.wordpress.org/trunk@40504 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 22:47:41 +00:00
Andrea Fercia 691d649329 Media: Remove the custom styling for the MediaElementJS controls offscreen text.
This offscreen text is not meant to be revealed on focus and just acts as fallback
for assistive technologies that don't support `aria-label` and `role="slider"`.
Also, revealing it on focus has proven over time to be very fragile and to cause
unexpected layout issues.

See #30281.
Fixes #40707.

Built from https://develop.svn.wordpress.org/trunk@40642


git-svn-id: http://core.svn.wordpress.org/trunk@40503 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 22:29:42 +00:00
Weston Ruter 26a5058f43 Widgets: Utilize WP REST API oEmbed proxy endpoint in media widgets.
Props timmydcrawford.
See #32417, #40450.

Built from https://develop.svn.wordpress.org/trunk@40641


git-svn-id: http://core.svn.wordpress.org/trunk@40502 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 21:24:42 +00:00
Weston Ruter 31d4d81039 Widgets: Introduce media widgets for images, audio, and video with extensible base for additional media widgets in the future.
The last time a new widget was introduced, Vuvuzelas were a thing, Angry Birds started taking over phones, and WordPress stopped shipping with Kubrick. Seven years and 17 releases without new widgets have been enough, time to spice up your sidebar!

Props westonruter, melchoyce, obenland, timmydcrawford, adamsilverstein, gonom9, wonderboymusic, Fab1en, DrewAPicture, sirbrillig, joen, matias, samikeijonen, afercia, celloexpressions, designsimply, michelleweber, ranh, kjellr, karmatosed.
Fixes #32417, #39993, #39994, #39995.

Built from https://develop.svn.wordpress.org/trunk@40640


git-svn-id: http://core.svn.wordpress.org/trunk@40501 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 21:11:44 +00:00
Pascal Birchler 763f09fb7e Upgrade/Install: After [40638], make sure `wp_is_file_mod_allowed()` actually returns the right value.
See #38673.


Built from https://develop.svn.wordpress.org/trunk@40639


git-svn-id: http://core.svn.wordpress.org/trunk@40500 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 19:54:43 +00:00
Pascal Birchler 33047ba14e Upgrade/Install: After [40394], rename `wp_disallow_file_mods()` to `wp_is_file_mod_allowed()`.
This makes it more clear what this function is about.

Props Mte90.
Fixes #38673.

Built from https://develop.svn.wordpress.org/trunk@40638


git-svn-id: http://core.svn.wordpress.org/trunk@40499 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 19:24:41 +00:00
Dominik Schilling 77858f4b92 KSES: Support `'tag' => true` as a shorthand for `'tag' => array()` in `wp_kses_attr()`.
`Automatic_Upgrader_Skin::feedback()` had always assumed that this is already the case, now it is.

See #20017.
Fixes #40680.
Built from https://develop.svn.wordpress.org/trunk@40637


git-svn-id: http://core.svn.wordpress.org/trunk@40498 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 19:23:43 +00:00
Pascal Birchler 9af735e863 Themes: Avoid PHP warnings in the admin when no theme directory exists.
Props iseulde, chris_dev, swissspidy.
Fixes #35521.

Built from https://develop.svn.wordpress.org/trunk@40636


git-svn-id: http://core.svn.wordpress.org/trunk@40497 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 19:21:44 +00:00
Pascal Birchler 0b1e3a05f7 Posts, Post Types: Add initial tests for `get_post_type_labels()`.
See #38218.
Fixes #38157.

Built from https://develop.svn.wordpress.org/trunk@40635


git-svn-id: http://core.svn.wordpress.org/trunk@40496 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 19:19:42 +00:00
Pascal Birchler fc1350ebe5 Administration: Ensure `validateForm` also validates other input fields.
With this change, textareas and select inputs will be checked as well.

Props shadyvb.
Fixes #37540.

Built from https://develop.svn.wordpress.org/trunk@40634


git-svn-id: http://core.svn.wordpress.org/trunk@40495 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 19:18:42 +00:00
Dominik Schilling 0cd74a6d6e Plugins: Don't strip line breaks and blockquote elements in the plugin information modal.
Fixes #40679.
Built from https://develop.svn.wordpress.org/trunk@40633


git-svn-id: http://core.svn.wordpress.org/trunk@40494 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 19:16:42 +00:00
Pascal Birchler c000e99d6f Mail: Ensure entities are decoded in email change notifications on Multisite.
Adds new tests to ensure this bug does not pop up again.

Props stephenharris.
Fixes #40015.

Built from https://develop.svn.wordpress.org/trunk@40632


git-svn-id: http://core.svn.wordpress.org/trunk@40493 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 19:15:44 +00:00
Weston Ruter 40ebb188cd Widgets: Extend the Text widget with TinyMCE.
Introduces rich text formatting: bold, italic, lists, links.

Props westonruter, azaozz, timmydcrawford, obenland, melchoyce.
See #35760.
Fixes #35243.

Built from https://develop.svn.wordpress.org/trunk@40631


git-svn-id: http://core.svn.wordpress.org/trunk@40492 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 18:55:43 +00:00
James Nylen 8561cb0516 REST API: Update `wp-api.js` fixtures after string changes.
See #39178.

Built from https://develop.svn.wordpress.org/trunk@40630


git-svn-id: http://core.svn.wordpress.org/trunk@40491 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 18:41:41 +00:00
James Nylen ace96e26aa REST API: Tests: Remove and prohibit errors when generating `wp-api.js` fixtures.
During a PHPUnit test suite run, a file named `wp-api-generated.js` is created which contains some response objects that serve as fixtures for the `wp-api.js` client unit tests.

Previously, some of these API responses were actually error objects, which isn't what we want for testing.  This commit fixes the existing error responses and prevents this situation in the future.

Fixes #40734.


Built from https://develop.svn.wordpress.org/trunk@40629


git-svn-id: http://core.svn.wordpress.org/trunk@40490 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 18:32:43 +00:00
James Nylen 589c4b4b2d REST API: Add endpoint for proxying requests to external oEmbed providers.
This endpoint is a prerequisite for the media widgets work (see https://github.com/xwp/wp-core-media-widgets).

Also use the new endpoint in the media modal instead of the `parse-embed` AJAX action.

Props westonruter, timmydcrawford, swissspidy, jnylen0.
Fixes #40450.

Built from https://develop.svn.wordpress.org/trunk@40628


git-svn-id: http://core.svn.wordpress.org/trunk@40489 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 18:18:46 +00:00
Weston Ruter 2353930f90 Customize: Wait for `processing` state to clear before starting to `captureSettingModifiedDuringSave`.
See #32941.
Fixes #40729.

Built from https://develop.svn.wordpress.org/trunk@40627


git-svn-id: http://core.svn.wordpress.org/trunk@40488 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 06:42:43 +00:00
Peter Wilson 746edb23f2 Emoji: Update Twemoji to version 2.2.5
Updates Twemoji and adds a second Emoji 4 test to include a shrugging man. Emoji 4 is being implemented gradually, while some browsers now support the female technologist, the indifferent shrugging man is breaking things with his presence.

Props peterwilsoncc, pento for code review.
Fixes #40615.

Built from https://develop.svn.wordpress.org/trunk@40626


git-svn-id: http://core.svn.wordpress.org/trunk@40487 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 04:26:41 +00:00
Andrew Ozz 57ef33fa2a Editor: manually trigger `change` event when text is modified from JS.
Props westonruter.
Fixes #40726.
Built from https://develop.svn.wordpress.org/trunk@40615


git-svn-id: http://core.svn.wordpress.org/trunk@40485 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 00:29:41 +00:00
Gary Pendergast 59c721dda0 Build/Test: Revert that failing test.
Now that Travis has confirmed that it is sending messages to Slack when a test fails, we no longer need a failing test.

The failing test added in [40613] is reverted, as Travis has failed to fail at notifying us about failing tests.

See #40712.


Built from https://develop.svn.wordpress.org/trunk@40614


git-svn-id: http://core.svn.wordpress.org/trunk@40484 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-11 00:16:41 +00:00
Gary Pendergast 33e2f5fe9a Build/Test: Add an intentionally failing test.
To ensure that Travis is sending messages to Slack, a test needs to fail, so here's a failing test.

This failing test (and no other failing tests) will be reverted once Travis confirms that it isn't failing to message Slack about failing tests.

See #40712.


Built from https://develop.svn.wordpress.org/trunk@40613


git-svn-id: http://core.svn.wordpress.org/trunk@40483 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 23:37:43 +00:00
Felix Arntz 0f4725a0e3 Multisite: Adjust site count of the correct network after having created a new site.
Prior to this change, after creating a site, the network site count was always refreshed on the current network, regardless of whether the site was created on a different network. With the recent changes, particularly [40591], it is now possible to update the site count for a specific `$network_id`, so this changeset makes use of the new parameter.

Fixes #38699.

Built from https://develop.svn.wordpress.org/trunk@40612


git-svn-id: http://core.svn.wordpress.org/trunk@40482 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 23:22:42 +00:00
Felix Arntz 5310efaf61 Multisite: Fix usage of incorrect `site_count` network option name in unit tests.
The unit tests introduced as part of [40486] used the wrong `site_count` network option name instead of `blog_count`. This did not cause actual issues in the tests, but deleting the option was supposed to verify that it is properly recreated afterwards. The usage of the wrong name made these tests less useful, so this changeset fixes it.

Fixes #40725.

Built from https://develop.svn.wordpress.org/trunk@40611


git-svn-id: http://core.svn.wordpress.org/trunk@40481 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 23:13:41 +00:00
Felix Arntz 051f291861 Multisite: Fix unstable unit test for `get_blog_count()`.
The unit test introduced in [40370] used the strict `assertSame()` check while comparison a count with the value of an option, which under most conditions is not an integer. While the test passed on some setups, it failed on others. This changeset ensures that `assertEquals()` is used to make the test stable.

Fixes #40724.

Built from https://develop.svn.wordpress.org/trunk@40610


git-svn-id: http://core.svn.wordpress.org/trunk@40480 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 23:03:43 +00:00
Peter Wilson 6c23b4750c Emoji: Clear canvas between flag tests.
Clear the canvas following the two flag tests following [40582].

Fixes #40616.


Built from https://develop.svn.wordpress.org/trunk@40609


git-svn-id: http://core.svn.wordpress.org/trunk@40479 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 22:44:40 +00:00
Weston Ruter 7349c22b73 Customize: Fix clearing of `fresh_site` option flag when editing sidebars on widgets admin screen.
Amends [38991].
See #38114, #38533.
Fixes #40722.

Built from https://develop.svn.wordpress.org/trunk@40608


git-svn-id: http://core.svn.wordpress.org/trunk@40478 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 21:25:41 +00:00
Andrew Ozz b952bf4eae Dashboard: Update the existing WordPress News dashboard widget to also include upcoming meetup events and WordCamps near the current user’s location.
Props @afercia, @andreamiddleton, @azaozz, @camikaos, @coreymckrill, @chanthaboune, @courtneypk, @dd32, @iandunn, @iseulde, @mapk, @mayukojpn, @melchoyce, @nao, @obenland, @pento, @samuelsidler, @stephdau, @tellyworth.
See #40702.
Built from https://develop.svn.wordpress.org/trunk@40607


git-svn-id: http://core.svn.wordpress.org/trunk@40477 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 20:04:42 +00:00
James Nylen 802c923873 REST API: Improve a few more strings added after the 4.7 string freeze.
See #39178.

See also #40720 for potential follow-up steps.

Built from https://develop.svn.wordpress.org/trunk@40606


git-svn-id: http://core.svn.wordpress.org/trunk@40476 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 19:41:41 +00:00
James Nylen 7d337c1327 REST API: Add `author`, `modified`, and `parent` sort order options for posts.
These (and a few others that can be revisited later if needed) were present in
beta versions of the WP REST API but were removed during the merge to WP 4.7.

Props ChopinBach, jnylen0.
Fixes #38693.

Built from https://develop.svn.wordpress.org/trunk@40605


git-svn-id: http://core.svn.wordpress.org/trunk@40475 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 18:52:44 +00:00
Gary Pendergast 30bdd11fd5 Build/Test: Post Travis results to Slack from `WordPress/wordpress-develop`
Now that the `WordPress/wordpress-develop` GitHub repo is syncing correctly, we can use it for Travis integration.

Props jorbin for getting the ball rolling so long ago, unprops jorbin because his Travis build can finally be retired.

Fixes #40712.


Built from https://develop.svn.wordpress.org/trunk@40604


git-svn-id: http://core.svn.wordpress.org/trunk@40474 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 10:29:44 +00:00
Ryan McCue 3ecfb4b222 Options/Meta: Document valid types for registration.
In 4.7, the REST API introduced types for options and meta passed into the registration functions. This adds the documentation for those types.

Props iandunn, priyankabehera155.
Fixes #40318.

Built from https://develop.svn.wordpress.org/trunk@40603


git-svn-id: http://core.svn.wordpress.org/trunk@40473 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 06:10:43 +00:00
Ryan McCue 131518542e REST API: Include featured_media in embed responses.
Props kadamwhite, jnylen0, westonruter.
Fixes #39805.

Built from https://develop.svn.wordpress.org/trunk@40602


git-svn-id: http://core.svn.wordpress.org/trunk@40472 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 04:46:43 +00:00
Ryan McCue ba94bd62a0 REST API: Set global $post when preparing revisions.
For compatibility with filters on hooks on content filters (such as shortcodes), we need to set the global. This mirrors the Posts controller.

Props pdufour, jnylen0.
Fixes #40626.

Built from https://develop.svn.wordpress.org/trunk@40601


git-svn-id: http://core.svn.wordpress.org/trunk@40471 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 04:32:39 +00:00
Ryan McCue 027e8d9218 REST API: Allow "Origin: null" from file: URLs.
Browsers send an "Origin: null" header value for file and data URLs, as they can be generated by any document, and their origin is not guaranteed. Since we want to allow any URL to access the API (intentionally disabling the CORS protections), we need to special-case the non-URL "null" value.

Props joehoyle.
Fixes #40011.

Built from https://develop.svn.wordpress.org/trunk@40600


git-svn-id: http://core.svn.wordpress.org/trunk@40470 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 04:22:43 +00:00
Andrew Ozz 19ed296008 Editor: Update `wp.editor.remove()` to use the new Quicktags instance `removep()`.
Fixes: #35760
Built from https://develop.svn.wordpress.org/trunk@40599


git-svn-id: http://core.svn.wordpress.org/trunk@40469 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 02:50:44 +00:00
Andrew Ozz 0b2f789e93 Editor: Add `init` and `remove` methods to Quicktags.
Props helgatheviking azaozz.
Fixes #26183 #40708.
Built from https://develop.svn.wordpress.org/trunk@40598


git-svn-id: http://core.svn.wordpress.org/trunk@40468 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-10 02:47:42 +00:00
Mike Schroder 391145df30 Media: Optionally return attachment id from `media_sideload_image()`.
Introduces option to `$return` parameter to return the attachment id created after a successful image sideload.

Props slbmeh, kawauso, alexkingorg, SergeyBiryukov, georgestephanis, DrewAPicture, nacin, trepmal, mattheu, kraftbj, whyisjake, dotancohen, MrGregWaugh, danielbachhuber.
Fixes #19629.
Built from https://develop.svn.wordpress.org/trunk@40597


git-svn-id: http://core.svn.wordpress.org/trunk@40467 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-09 23:26:42 +00:00
Felix Arntz d5ae7e682e Multisite: Fix filter hooks for the updating network count functions.
[40591] and [40593] introduced a `$network_id` parameter for `wp_maybe_update_network_site_counts()` and `wp_maybe_update_network_user_counts()`, as well as [40486] previously added it to `wp_update_network_counts()`. This changeset ensures the filter hooks in `ms-default-filters.php` do not pass any parameter to them that might conflict with their actual `$network_id` parameter, which caused unit test failures before.

Fixes #40703.

Built from https://develop.svn.wordpress.org/trunk@40596


git-svn-id: http://core.svn.wordpress.org/trunk@40466 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-09 17:15:43 +00:00
Jeremy Felt 5b3d397133 Multisite: Check only valid looking emails against banned domain list.
If an email address is missing an `@`, we can't assume enough to check it against a list of domain names.

Additional validation of email should happen in `is_email()` before being passed to `is_email_address_unsafe()`.

Fixes #39915.

Built from https://develop.svn.wordpress.org/trunk@40595


git-svn-id: http://core.svn.wordpress.org/trunk@40465 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-09 16:55:40 +00:00
Jeremy Felt 3600dc562e Multisite: Validate email before checking against banned domains.
Previously, an invalid email could result in an undefined index when attempting to determine the email domain.

Props ocean90.
See #39915.

Built from https://develop.svn.wordpress.org/trunk@40594


git-svn-id: http://core.svn.wordpress.org/trunk@40464 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-09 16:33:46 +00:00
Felix Arntz d92dbd24fc Multisite: Add `$network_id` parameter to `wp_maybe_update_network_user_counts()`.
This allows calling the function for a specific network correctly, for example after a user has been created for it or been removed from it.

Fixes #40385. See #38699.

Built from https://develop.svn.wordpress.org/trunk@40593


git-svn-id: http://core.svn.wordpress.org/trunk@40463 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-09 16:08:43 +00:00
Felix Arntz 314f2aecec Multisite: Add missing documentation for new `$network_id` parameter of `wp_maybe_update_network_site_counts()`.
This was overlooked in [40591].

See #40384.

Built from https://develop.svn.wordpress.org/trunk@40592


git-svn-id: http://core.svn.wordpress.org/trunk@40462 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-09 16:02:46 +00:00
Felix Arntz 93b8b9bb4e Multisite: Add `$network_id` parameter to `wp_maybe_update_network_site_counts()`.
This allows calling the function for a specific network correctly, for example after a site has been created for it or been removed from it.

Fixes #40384. See #38699.

Built from https://develop.svn.wordpress.org/trunk@40591


git-svn-id: http://core.svn.wordpress.org/trunk@40461 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-09 16:00:44 +00:00
Felix Arntz 039d49a68a Multisite: Add `$network_id` parameter to `wp_is_large_network()`.
Now that `get_blog_count()` and `get_user_count()` both support passing a `$network_id` parameter (see [40370] and [40371]), similar functionality is now available for `wp_is_large_network()`. In addition, the filter `wp_is_large_network` now accepts the network ID as its fourth parameter.

This changeset furthermore introduces unit tests for the `wp_is_large_network()` function and its filter.

Fixes #40489.

Built from https://develop.svn.wordpress.org/trunk@40590


git-svn-id: http://core.svn.wordpress.org/trunk@40460 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-09 15:51:47 +00:00
Felix Arntz a3797875bf Multisite: Introduce `minimum_site_name_length` filter.
Prior to this change, the minimum site name length checked in `wpmu_validate_blog_signup()` was set to a fixed value of 4. The new filter allows tweaking this value, as there may be cases where shorter site names may be required.

Fixes #39676.

Built from https://develop.svn.wordpress.org/trunk@40589


git-svn-id: http://core.svn.wordpress.org/trunk@40459 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-05-09 14:59:47 +00:00