Fix typo in mbstring_binary_safe_encoding() description.

props ghost1227.
fixes #28423.
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git-svn-id: http://core.svn.wordpress.org/trunk@28466 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In `WPPlaylistView::ended()`, at the end of a playlist, set the index to `0` and call `->setCurrent()` instead of `->loadCurrent()` so that the first track is properly highlighted.

Fixes #28428.

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In the spirit of [27622], add a few CSS rules to ensure that videos will be responsive, regardless of theme.

Props Funkatronic.
Fixes #28414.

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Add oEmbed support for TED talks.

props pdclark.
fixes #28285.
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git-svn-id: http://core.svn.wordpress.org/trunk@28469 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Because of YouTube's overwhelming dominance in the online video space, we should help our users who paste bad URLs when possible. It is easy to fix `http://youtube.com/embed/acb1233` URLs by turning them into `http://youtube.com/watch?v=abc1233` embeds using an embed handler (we already have one to fix Google Video embeds).

We should avoid doing this in almost every other case, but it's YouTube, and it's an easy error for a novice to make.

Fixes #24660.

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git-svn-id: http://core.svn.wordpress.org/trunk@28470 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Make sure `$post` is properly documented as optional where applicable.

See #28388.

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Ensure `$post_id` is documented as optional where applicable.

See #28388.

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Be more specific that `$post_id` does not default to the ID of the global `$post` in some cases.

See [28654]. See #28388.

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Improve inline documentation for wp-includes/load.php.

Props ericlewis, DrewAPicture.
Fixes #24886.

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Mark the `MYSQL_NEW_LINK` constant as deprecated in 3.9+ as no equivalent to the `$new_link` parameter exists in `mysqli_*` functions.

Fixes #27933.

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Make sure to use 3-digit x.x.x style for two 3.9.0 `@since` versions.

Props netweb.
Fixes #28446.

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git-svn-id: http://core.svn.wordpress.org/trunk@28476 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix SQL generation when `meta_query` has an `'relation' => 'OR'` for its queries and wants to `'orderby' => 'meta_value'`.

Adds unit test.

Props jackreichert.
Fixes #25538.


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git-svn-id: http://core.svn.wordpress.org/trunk@28477 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Improve inline documentation for the `__construct()` and `add()` methods in `WP_Error` class.

Props jdgrimes.
Fixes #28203.

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git-svn-id: http://core.svn.wordpress.org/trunk@28478 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fourteen: add documentation for global variables used in `twentyfourteen_wp_title()`. Closes #28421.
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Twenty Thirteen: fix layout issue with search form in older versions of Safari and Android. Fixes #24192, props iljoja.
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Twenty Fourteen: apply `.widget` input and textarea styles only if they are inside `.widget-area`. Props jesin, fixes #27677.
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After [28613], also kill queries that explicityly pass empty arrays to `category__in`, `tag__in`, `tag_slug__in`, and `author__in` to `WP_Query`.

Adds unit tests.
Fixes #28099.

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git-svn-id: http://core.svn.wordpress.org/trunk@28482 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Wrap individual meta query `WHERE` clases in parens, missed in `28659`.

Props boonebgorges.
Fixes #25538.


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git-svn-id: http://core.svn.wordpress.org/trunk@28483 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Prevent admin breakage for `s` in `WP_Query` after [28623].

See #11330.


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Avoid a PHP notice when using WP_Query::get_queried_object() in pre_get_posts action.

props wpsmith.
fixes #28412.
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