WordPress 5.2 adds the `wp_body_open()` function, and the default themes make use of it. This patch adds a shim for `wp_body_open` to bundled themes so this function will also work in older versions of WordPress.
Props lgedeon, johnbillion, timph, ramiy, pento.
Fixes#46679.
Built from https://develop.svn.wordpress.org/trunk@45256
git-svn-id: http://core.svn.wordpress.org/trunk@45065 1a063a9b-81f0-0310-95a4-ce76da25c4cd
For many bundled theme related stylesheets, a version is either not specified, or specified as a hardcoded date string when enqueued. This is problematic when a stylesheet is updated and the version number is not (which has happened several times recently). This change ensures that all bundled theme related stylesheets use the theme’s version as the stylesheet version. This ensures cache busting for theme stylesheets every time a theme is updated and guarantees that users receive any new or updated styles included in the update when visiting the site for the first time after an update.
Props parsmizban, ianbelanger, dswebsme.
Fixes#39997.
Built from https://develop.svn.wordpress.org/trunk@45213
git-svn-id: http://core.svn.wordpress.org/trunk@45022 1a063a9b-81f0-0310-95a4-ce76da25c4cd
* Enables inserting (asynchronous) JavaScript right after the opening `body` tag.
* Add a `wp_body_open` helper function that triggers the `wp_body_open` action.
* Call `wp_body_open` in core themes immediately after the opening `body` tag.
Props joostdevalk, valendesigns, nacin, saracup, jorbin, mikeschinkel, jonnybojangles, lgedeon, Willscrlt, Denis-de-Bernardy, lexiqueen, sky_76, welcher, westonruter, ramiy, joyously.
Fixes#12563.
Built from https://develop.svn.wordpress.org/trunk@45042
git-svn-id: http://core.svn.wordpress.org/trunk@44851 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Currently, if a parent block has a custom background color assigned, its child blocks will inherit the parent's text colors — even if the child block has its own custom text color assigned to it.
This update changes the following:
- Adjusts Twenty Nineteen's custom background color defaults to target direct children only which fixes the issue
Props kjellr.
See #46432.
Built from https://develop.svn.wordpress.org/trunk@44818
git-svn-id: http://core.svn.wordpress.org/trunk@44650 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In the non-latin font fallback styles, languages using the Devanagari alphabet were initially committed in a comma-separated list in the `:lang()` selector, which isn't fully supported. This update separates those languages into their own `:lang()` selectors.
Props mako09.
Fixes#45731.
Built from https://develop.svn.wordpress.org/trunk@44657
git-svn-id: http://core.svn.wordpress.org/trunk@44488 1a063a9b-81f0-0310-95a4-ce76da25c4cd
The theme's original approach to its non-latin font fallbacks required `!important`, which overrode fonts that shouldn't have been changed, like the icon fonts used for editor buttons.
Props kjellr, mako09, allancole.
Fixes#45731.
Built from https://develop.svn.wordpress.org/trunk@44650
git-svn-id: http://core.svn.wordpress.org/trunk@44481 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Seventeen's original styles for the block editor custom colors had some issues: they weren't being applied to the button blocks due to lack of specificity, and when applied to paragraph blocks, there was no padding in the editor. This update makes sure the colors and related styles work as expected.
Fixes#45426.
Built from https://develop.svn.wordpress.org/trunk@44402
git-svn-id: http://core.svn.wordpress.org/trunk@44232 1a063a9b-81f0-0310-95a4-ce76da25c4cd
When existing scripts or styles are updated in default themes, the version numbers in the enqueues should also be bumped to make sure the old files don't cache. This update bumps version numbers for changes since version 5.0, for themes Twenty Eleven through Twenty Nineteen.
Fixes#45679.
Built from https://develop.svn.wordpress.org/trunk@44382
git-svn-id: http://core.svn.wordpress.org/trunk@44212 1a063a9b-81f0-0310-95a4-ce76da25c4cd
When the original block editor styles were added to the existing default themes, the button blocks were styled to match how each theme styled the `button` tag.
However, the styles should respect the block editor's default style, "Rounded", and allow switching to the other styles, like "Outlined" and "Square".
Fixes#45541.
Built from https://develop.svn.wordpress.org/trunk@44381
git-svn-id: http://core.svn.wordpress.org/trunk@44211 1a063a9b-81f0-0310-95a4-ce76da25c4cd
A change to the MediaElement.js caused Twenty Fourteen's custom video play button to display in the top corner, rather than centered. This update returns it to its correct position.
Props mmaumio, celloexpressions.
Fixes#44664.
Built from https://develop.svn.wordpress.org/trunk@44380
git-svn-id: http://core.svn.wordpress.org/trunk@44210 1a063a9b-81f0-0310-95a4-ce76da25c4cd
The "Continue Reading" link that's generated by the More block is styled to include an arrow next to the text; that arrow shouldn't inherit the text underline style. This update removes it.
Props littlebigthing, kjellr.
Fixes#45715.
Built from https://develop.svn.wordpress.org/trunk@44369
git-svn-id: http://core.svn.wordpress.org/trunk@44199 1a063a9b-81f0-0310-95a4-ce76da25c4cd
On pages and posts with featured images, the top level menu items have a slight transparency on hover, which was being inherited by their submenus. This update removes that inheritance, improving readability and consistency in the menu's appearance.
Props kjellr.
Fixes#45689.
Built from https://develop.svn.wordpress.org/trunk@44368
git-svn-id: http://core.svn.wordpress.org/trunk@44198 1a063a9b-81f0-0310-95a4-ce76da25c4cd
The theme's original navigation JavaScript was making it so all links on a site were immediately followed on touchstart when using a touch-enabled device. This update makes sure links are followed at touchend, to improve usability and menu behavior.
Already committed to the 5.0 branch in [44357].
Props anevins, panchen, kjellr.
Fixes#45510.
Built from https://develop.svn.wordpress.org/trunk@44358
git-svn-id: http://core.svn.wordpress.org/trunk@44188 1a063a9b-81f0-0310-95a4-ce76da25c4cd
The markup for the default block appender changed from a text input to a text area in the editor; this update makes the same change in the default theme styles.
Props laurelfulford.
Merges [44212] into trunk.
Fixes#45450.
Built from https://develop.svn.wordpress.org/trunk@44312
git-svn-id: http://core.svn.wordpress.org/trunk@44142 1a063a9b-81f0-0310-95a4-ce76da25c4cd
When using the block-based editor in Twenty Sixteen, superscript is displaying below the baseline and subscript is displaying above the baseline. This is the opposite of what should occur. This reverses the two to display correctly.
Props greg-raven, torontodigits, JDTrower.
Merges [44210] into trunk.
Fixes: #44776.
Built from https://develop.svn.wordpress.org/trunk@44311
git-svn-id: http://core.svn.wordpress.org/trunk@44141 1a063a9b-81f0-0310-95a4-ce76da25c4cd
- Remove unnecessary `ol` styles from editor. Twenty Seventeen was designed with bolded numbers for its ordered list styles. This was removed from the theme prior to launch, but it was left in the editor styles, so it needed to be removed there, too.
- To improve accessibility, the cookies content checkbox in the comment form needed some visible indication when it’s in focus.
- Twenty Seventeen’s editor styles contained an Internet Explorer 8 specific fix that stopped images from being scalable in the editor in other browsers. Since the editor no longer supports IE8, this fix can safely be removed.
- Fix the `font-family` used for Simplified Chinese (zh_CN) in the block editor CSS.
Props mmaumio, edpittol, pratikthink, afercia, audrasjb, mihaivalentin, subrataemfluence, vaishalipanchal, ze3kr, laurelfulford.
Merges [44203-44205] and [44235] into trunk.
Fixes#44775, #44699, #39738, #45408.
Built from https://develop.svn.wordpress.org/trunk@44307
git-svn-id: http://core.svn.wordpress.org/trunk@44137 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Simplify some of the button block’s CSS selectors in the theme, to make sure the default colors don’t override the custom colors on the front end.
This fix is applied to Twenty Sixteen, Twenty Fifteen and Twenty Fourteen.
Props laurelfulford.
Merges [44197-44198] and [44200] into trunk.
Fixes#45428, #45429.
Built from https://develop.svn.wordpress.org/trunk@44306
git-svn-id: http://core.svn.wordpress.org/trunk@44136 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Simplify some of the button block’s CSS selectors in the theme, to make sure the default colors don’t override the custom colors on the front end.
Also make sure the button’s gradient is not applied when a custom background color is added, since it will hide it.
Props laurelfulford.
Merges [44195] into trunk.
Fixes#45431.
Built from https://develop.svn.wordpress.org/trunk@44304
git-svn-id: http://core.svn.wordpress.org/trunk@44134 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Simplify some of the button block’s CSS selectors in the theme, to make sure the default colors don’t override the custom colors on the front end.
Also make sure the button’s gradient is not applied when a custom background color is added, since it will hide it.
Props laurelfulford.
Merges [44194] to trunk.
Fixes#45432.
Built from https://develop.svn.wordpress.org/trunk@44303
git-svn-id: http://core.svn.wordpress.org/trunk@44133 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Update a mistake in Twenty Eleven's block editor styles that erroneously sets the `font-size` to `300`, when it should set the `font-weight` to `300`. This was causing browsers in quirks mode to make the editor font size very large.
Also, simplify some of the button block’s CSS selectors in the theme, to make sure the default colors don’t override the custom colors on the front end.
Props laurelfulford.
Merges [44190] and [44191] to trunk.
Fixes#45421, #45433.
Built from https://develop.svn.wordpress.org/trunk@44301
git-svn-id: http://core.svn.wordpress.org/trunk@44131 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Make sure the block editor custom colors in the theme also override the theme's `:visited` link styles. This prevents contrast issues, like in the button block -- when the background is dark, the purple `:visited` link can be difficult to read.
Props laurelfulford.
Merges [44188] into trunk.
Fixes#45434.
Built from https://develop.svn.wordpress.org/trunk@44299
git-svn-id: http://core.svn.wordpress.org/trunk@44129 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Sixteen includes functionality and styles that make full-size images extend wider than the content when they are added to posts, and appear below the post meta. This update adds the same behavior to image blocks and their captions.
Merges [43911] to trunk.
Props laurelfulford.
Fixes: #45380.
Built from https://develop.svn.wordpress.org/trunk@44263
git-svn-id: http://core.svn.wordpress.org/trunk@44093 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add `add_theme_support( 'responsive-embeds' );` to all of the responsive default themes as part of their block editor support. This makes sure any embeds coming from the new block-based editor maintain their aspect ratios at different screen sizes.
Merges [43868] into trunk.
Props laurelfulford.
Fixes#45274.
Built from https://develop.svn.wordpress.org/trunk@44227
git-svn-id: http://core.svn.wordpress.org/trunk@44057 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This update adds styles and theme support related to the new block-based editor to enhance the experience of using it with Twenty Seventeen.
These are the specific changes made to this theme:
- Add `blocks.css`, to style blocks on the front end, to make sure they match the theme’s existing HTML element styles.
- Add `editor-blocks.css` to style blocks in the editor, to make sure they match the theme’s existing HTML element styles.
- Add theme support for `editor-styles`, to pull the existing editor stylesheet into the new editor.
- Add theme support for `wp-block-styles`, to load the default block styles on the front end.
Props laurelfulford, ianbelanger, crunnells, davidkennedy.
Merges [43800] to trunk.
Fixes#45045.
Built from https://develop.svn.wordpress.org/trunk@44148
git-svn-id: http://core.svn.wordpress.org/trunk@43978 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This update adds styles and theme support related to the new block-based editor to enhance the experience of using it with Twenty Sixteen.
These are the specific changes made to this theme:
- Add `blocks.css`, to style blocks on the front end, to make sure they match the theme’s existing HTML element styles.
- Add `editor-blocks.css` to style blocks in the editor, to make sure they match the theme’s existing HTML element styles.
- Add theme support for `editor-styles`, to pull the existing editor stylesheet into the new editor.
- Add theme support for `wp-block-styles`, to load the default block styles on the front end.
- Add theme support for `editor-color-palette`, to load a color palette based on the theme’s color scheme into the block-based editor.
Props laurelfulford, davidkennedy.
Merges [43799] to trunk.
Fixes#45044.
Built from https://develop.svn.wordpress.org/trunk@44147
git-svn-id: http://core.svn.wordpress.org/trunk@43977 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This update adds styles and theme support related to the new block-based editor to enhance the experience of using it with Twenty Fifteen.
These are the specific changes made to this theme:
- Add `blocks.css`, to style blocks on the front end, to make sure they match the theme’s existing HTML element styles.
- Add `editor-blocks.css` to style blocks in the editor, to make sure they match the theme’s existing HTML element styles.
- Add theme support for `editor-styles`, to pull the existing editor stylesheet into the new editor.
- Add theme support for `wp-block-styles`, to load the default block styles on the front end.
- Add theme support for `editor-color-palette`, to load a color palette based on the theme’s color scheme into the block-based editor.
Props laurelfulford, davidkennedy.
Merges [43798] to trunk.
Fixes#45043.
Built from https://develop.svn.wordpress.org/trunk@44145
git-svn-id: http://core.svn.wordpress.org/trunk@43975 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This update adds styles and theme support related to the new block-based editor to enhance the experience of using it with Twenty Fourteen.
These are the specific changes made to this theme:
- Add `blocks.css`, to style blocks on the front end, to make sure they match the theme’s existing HTML element styles.
- Add `editor-blocks.css` to style blocks in the editor, to make sure they match the theme’s existing HTML element styles.
- Add theme support for `editor-styles`, to pull the existing editor stylesheet into the new editor.
- Add theme support for `wp-block-styles`, to load the default block styles on the front end.
- Add theme support for `editor-color-palette`, to load a color palette based on the theme’s color scheme into the block-based editor.
Props laurelfulford, crunnells, ianbelanger, davidkennedy.
Merges [43797] to trunk.
Fixes#45042.
Built from https://develop.svn.wordpress.org/trunk@44144
git-svn-id: http://core.svn.wordpress.org/trunk@43974 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This update adds styles and theme support related to the new block-based editor to enhance the experience of using it with Twenty Thirteen.
These are the specific changes made to this theme:
- Add `blocks.css`, to style blocks on the front end, to make sure they match the theme’s existing HTML element styles.
- Add `editor-blocks.css` to style blocks in the editor, to make sure they match the theme’s existing HTML element styles.
- Add theme support for `editor-styles`, to pull the existing editor stylesheet into the new editor.
- Add theme support for `wp-block-styles`, to load the default block styles on the front end.
- Add theme support for `editor-color-palette`, to load a color palette based on the theme’s color scheme into the block-based editor.
- Add theme support and styles for `align-wide`, to allow wide and full alignment styles on the blocks.
Props laurelfulford, ianbelanger, davidkennedy.
Merges [43796] to trunk.
Fixes#45041.
Built from https://develop.svn.wordpress.org/trunk@44142
git-svn-id: http://core.svn.wordpress.org/trunk@43972 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This update adds styles and theme support related to the new block-based editor to enhance the experience of using it with Twenty Twelve.
These are the specific changes made to this theme:
- Add `blocks.css`, to style blocks on the front end, to make sure they match the theme’s existing HTML element styles.
- Add `editor-blocks.css` to style blocks in the editor, to make sure they match the theme’s existing HTML element styles.
- Add theme support for `editor-styles`, to pull the existing editor stylesheet into the new editor.
- Add theme support for `wp-block-styles`, to load the default block styles on the front end.
- Add theme support for `editor-color-palette`, to load a color palette based on the theme’s color scheme into the block-based editor.
Props ianbelanger, crunnells, laurelfulford, davidakennedy.
Merges [43795] to trunk.
Fixes#45040.
Built from https://develop.svn.wordpress.org/trunk@44140
git-svn-id: http://core.svn.wordpress.org/trunk@43970 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This update adds styles and theme support related to the new block-based editor to enhance the experience of using it with Twenty Eleven.
These are the specific changes made to this theme:
- Add `blocks.css`, to style blocks on the front end, to make sure they match the theme’s existing HTML element styles.
- Add `editor-blocks.css` to style blocks in the editor, to make sure they match the theme’s existing HTML element styles.
- Add theme support for `editor-styles`, to pull the existing editor stylesheet into the new editor.
- Add theme support for `wp-block-styles`, to load the default block styles on the front end.
- Add theme support for `editor-color-palette`, to load a color palette based on the theme’s color scheme into the block-based editor.
Props ianbelanger, laurelfulford, davidakennedy.
Merges [43794] to trunk.
Fixes#45039.
Built from https://develop.svn.wordpress.org/trunk@44139
git-svn-id: http://core.svn.wordpress.org/trunk@43969 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This update adds styles and theme support related to the new block-based editor to enhance the experience of using it with Twenty Ten.
These are the specific changes made to this theme:
- Add blocks.css, to style blocks on the front end, to make sure they match the theme’s existing HTML element styles.
- Add `editor-blocks.css` to style blocks in the editor, to make sure they match the theme’s existing HTML element styles.
- Add theme support for `editor-styles`, to pull the existing editor stylesheet into the new editor.
- Add theme support for `wp-block-styles`, to load the default block styles on the front end.
- Add theme support for `editor-color-palette`, to load a color palette based on the theme’s color scheme into the block-based editor.
Props nielslange, crunnells, laurelfulford, davidakennedy.
Merges [43793] to trunk.
Fixes#45038.
Built from https://develop.svn.wordpress.org/trunk@44137
git-svn-id: http://core.svn.wordpress.org/trunk@43967 1a063a9b-81f0-0310-95a4-ce76da25c4cd
WPCS 1.0.0 includes a bunch of new auto-fixers, which drops the number of coding standards issues across WordPress significantly. Prior to running the auto-fixers, there were 15,312 issues detected. With this commit, we now drop to 4,769 issues.
This change includes three notable additions:
- Multiline function calls must now put each parameter on a new line.
- Auto-formatting files is now part of the `grunt precommit` script.
- Auto-fixable coding standards issues will now cause Travis failures.
Fixes#44600.
Built from https://develop.svn.wordpress.org/trunk@43571
git-svn-id: http://core.svn.wordpress.org/trunk@43400 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Non-wrapping `label`s are more widely supported by assitive technologies. The CSS changes account for the element re-ordering, and tweak the formatting for improved readability.
Props afercia, xkon, laurelfulford, azaozz.
Fixes#43436.
Built from https://develop.svn.wordpress.org/trunk@43125
git-svn-id: http://core.svn.wordpress.org/trunk@42954 1a063a9b-81f0-0310-95a4-ce76da25c4cd
If a privacy policy has been set, then a link to it will automatically be shown in the footer.
The element containing the "Proudly powered by WordPress" link was chosen for the new policy link, in order to minimize visual conflicts with custom CSS that was written before the new link existed. Unfortunately, some minor conflicts are expected and unavoidable. Adding this link is required as part of GDPR compliance, and the benefits outweigh the downsides.
To further mitigate the conflicts, a new `imprint` class was added to the "Proudly powered..." link, in order to facilitate targeting each link invididually with custom styles.
Props xkon, laurelfulford, birgire, azaozz, iandunn.
See #43715.
Built from https://develop.svn.wordpress.org/trunk@43051
git-svn-id: http://core.svn.wordpress.org/trunk@42880 1a063a9b-81f0-0310-95a4-ce76da25c4cd
As decided in the JavaScript core chat. With a few reasons:
* It is visually cleaner when reading the source.
* This bring the JavaScript documentation closer to the PHP documentation.
The only disadvantage is that the JSDoc parser doesn't split out the summary and the description in the new format. We've decided to solve this when building the JavaScript documentation parser.
Props herregroen.
Fixes#42901.
Built from https://develop.svn.wordpress.org/trunk@42411
git-svn-id: http://core.svn.wordpress.org/trunk@42240 1a063a9b-81f0-0310-95a4-ce76da25c4cd
The WPCS `WordPress.WhiteSpace.PrecisionAlignment` rule throws warnings for a bunch of code that will likely cause issues for `wpcbf`. Fixing these manually beforehand gives us better auto-fixed results later.
See #41057.
Built from https://develop.svn.wordpress.org/trunk@42228
git-svn-id: http://core.svn.wordpress.org/trunk@42057 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This pattern occurs a handful of times across the codebase:
`<div class="foo<?php if ( $bar ) { echo ' baz'; } ?>">`
Unfortunately, it doesn't really play nicely with `phpcbf`, so all instances need to be removed in preperation for auto code formatting.
See #41057.
Built from https://develop.svn.wordpress.org/trunk@42217
git-svn-id: http://core.svn.wordpress.org/trunk@42046 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Ten: Reduces image size and removes image borders for galleries in widget areas.
Twenty Eleven: Reduces image size and removes image borders for galleries in widget areas.
Twenty Twelve: Reduces image size for some gallery sizes in widget areas.
Twenty Thirteen: Ensure proper clearing for images, hide captions for some gallery column combos and ensure good display for galleries in widget areas.
Twenty Fourteen: Ensure proper clearing for images and hide captions for some gallery column combos for galleries in widget areas.
Twenty Seventeen: Hide captions for some gallery column combos for galleries in widget areas.
Props joyously, williampatton, davidakennedy, melchoyce, crunnells.
Fixes#41969.
Built from https://develop.svn.wordpress.org/trunk@42019
git-svn-id: http://core.svn.wordpress.org/trunk@41853 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Change version numbers in stylesheets, fix typo in Twenty Fourteen readme and update copyright dates for themes. Twentysixteen wasn't updated this cycle.
See #40745 for changes that helped push this along.
Fixes#40905.
Props davidakennedy, mrahmadawais, maedahbatool.
Built from https://develop.svn.wordpress.org/trunk@40883
git-svn-id: http://core.svn.wordpress.org/trunk@40733 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Mostly adds styles for lists and mediaelement.js instances within widgets.
Adds size classname to image widget so themes can customize their display.
Props Soean, obenland, celloexpressions, ocean90, karmatosed.
Fixes#40745.
Built from https://develop.svn.wordpress.org/trunk@40839
git-svn-id: http://core.svn.wordpress.org/trunk@40690 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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
When the posts page is on the front page or within a front page section, the heading hierarchy for the individual post titles needs to be adjusted accordingly.
Props joedolson, celloexpressions, davidakennedy.
Fixes#40264.
Built from https://develop.svn.wordpress.org/trunk@40458
git-svn-id: http://core.svn.wordpress.org/trunk@40334 1a063a9b-81f0-0310-95a4-ce76da25c4cd
The category is not shown in the preview. And because of how `themename_categorized_blog()` function in each theme returns false for 1 or fewer categories, and in this case it won't show the new category.
The patch uses `is_preview()` to fix that in Twenty Fourteen, Fifteen and Seventeen.
Props lancewillett.
Fixes#39531.
Built from https://develop.svn.wordpress.org/trunk@40023
git-svn-id: http://core.svn.wordpress.org/trunk@39960 1a063a9b-81f0-0310-95a4-ce76da25c4cd
The line of code throwing the error was introduced in WordPress 4.5 in r37040 "Customize: Require opt-in for selective refresh of widgets". Since `is_customize_preview()` was introduced in 4.0.0 and Twenty Fourteen should work from WordPress 3.6 and up, this caused the issue.
The patch adds an `is_customize_preview` function if it's missing.
Props adamsilverstein.
Fixes#39407.
Built from https://develop.svn.wordpress.org/trunk@40022
git-svn-id: http://core.svn.wordpress.org/trunk@39959 1a063a9b-81f0-0310-95a4-ce76da25c4cd
