An empty string causes some browsers to use the current URL as the `href`. When using `history.replaceState()` Chrome will re-fetch the favicon with each call, meaning that `customize.php` gets hit with wasted requests which tax the server.
Fixes#38377.
Built from https://develop.svn.wordpress.org/trunk@38901
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Previously we ensured that the entry points to WordPress were parsable by PHP4 in order to display a friendly not-supported-php error message.
However, for the last two years the main entry points have not actually parsed, and we've only added extra parse errors since it last worked in 3.9, so it's time we just remove this 'feature'.
The PHP version checks are still there for PHP 5.0/5.1, and so it's inplace when we eventually drop PHP 5.2 support.
See #29489.
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There are a handful of places where we don't check that the XML functions exist before we use them. Ubuntu's PHP 7 packages don't include PHP-XML by default, increasing the chance of this causing issues.
Props kraftbj, markoheijnen.
Fixes#37122.
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On the Header Image section, the previously uploaded images disappeared off-screen
when using the keyboard to navigate and the remove "X" button got keyboard focus.
Changing the off-screen CSS technique used for the "X" buttons fixes it.
- improves the focus style on the previously uploaded and suggested images
- removes a `tabindex="0"` attribute from the current header image
Fixes#38156.
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- changes the "X" links in buttons, improves their color contrast ratio and focus style
- adds screen reader text "Remove item: + tagname"
- uses `wp.a11y.speak()` to give screen reader users feedback when adding/removing tags
- makes the `tagcloud-link` toggle a button, with an `aria-expanded` attribute to indicate the tag cloud collapsed/expanded state
- changes colors for the autocomplete highlighted option in order to have a better color contrast ratio
- reduces the font size for the autocomplete on Press This
- removes CSS related to the old `suggest.js` from Press This
Props joedolson, cgrymala, azaozz, afercia.
Fixes#27555.
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Improve performance of Emoji tests and loading of the polyfill.
Reduces the number of tests to determine browser support for emoji to those most likely to fail. Adds the defer flag to the loaded scripts for browsers lacking support.
Props superpoincare for perf testing, peterwilsoncc.
Fixes#37817.
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This improves UX, since an image added will be displayed on front end as opposed to not at all. This fix added the front page's featured image above the front page content, similar to how it's handled in the other panels. Also it removed code that was setting the front page's featured image as a fallback to the custom header, and updated the conditions that add the `has-header-image` to remove reference to the front page's featured image.
Props laurelfulford.
Fixes#38402.
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Currently, it's hard to output an SVG in the comment function without a lot of extra effort. So this adds a simple border to the author avatar and removes previous code related to SVGs and/or Genericons.
Props laurelfulford.
Fixes#38403.
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As of WordPress 4.3 the `wp_new_comment()` function has been updated to allow the comment_agent value to be set when a comment is created. The comments API endpoint now allows the comment author's user agent to be set when creating a comment.
Also, the `readonly` property on the `author_user_agent` parameter in the schema was removed.
Props rabmalin for the initial patch.
Fixes#38425.
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In addition to `wp_list_filter()` for filtering a list of objects, and `wp_list_pluck()` for plucking a certain field out of each object in a list, this new function can be used for sorting a list of objects by specific fields. These functions are now all contained within the new `WP_List_Util()` class and `wp_list_sort()` is used in various parts of core for sorting lists.
Props flixos90, DrewAPicture, jorbin.
Fixes#37128.
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New default themes require workarounds being added to several unit tests, as they often alter default WordPress behaviour. To avoid ongoing maintenance issues, this change switches to a minimal theme when running tests.
This change also removes the old workarounds for default themes.
Fixes#31550.
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