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813 Commits

Author SHA1 Message Date
Felix Arntz bb234abee7 Media: Enable lazy-loading of iframes by adding the `loading="lazy"` attribute to iframe tags on the front-end. 
* Expands the capabilities of `wp_filter_content_tags()` to add the attribute to iframe tags if enabled.
* Modifies the default behavior of `wp_lazy_loading_enabled()` so that it returns `true` for `iframe` tags.
* Introduces a `wp_iframe_tag_add_loading_attr()` function.
* Introduces a `wp_iframe_tag_add_loading_attr` filter.

Like for images, the attribute is only added to iframes which have both `width` and `height` specified (see related #50367).

Props azaozz, flixos90, westonruter.
Fixes #50756.

Built from https://develop.svn.wordpress.org/trunk@49808


git-svn-id: http://core.svn.wordpress.org/trunk@49531 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-12-16 21:19:07 +00:00
Sergey Biryukov 52d2b07600 Docs: Fix typo in references to `WP_Error` in some DocBlocks. 
See #51800.
Built from https://develop.svn.wordpress.org/trunk@49769


git-svn-id: http://core.svn.wordpress.org/trunk@49492 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-12-08 11:51:05 +00:00
iandunn 77236320d3 Media: Return `WP_Error` when cropping with bad input to avoid fatal. 
This avoids an error on PHP 8 caused by calling `wp_imagecreatetruecolor()` with inputs that aren't numeric, or are less than 0.

Props hellofromtonya, Boniu91, metalandcoffee, SergeyBiryukov.
Fixes #51937.

Built from https://develop.svn.wordpress.org/trunk@49751


git-svn-id: http://core.svn.wordpress.org/trunk@49474 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-12-04 21:41:06 +00:00
Helen Hou-Sandí ee48cca207 Media: Avoid fatal error in `wp_prepare_attachment_for_js(). 
In certain contexts, in particular on the front-end, `get_media_states()` is not availble.

Props rebasaurus.
Fixes #51791.

Built from https://develop.svn.wordpress.org/trunk@49613


git-svn-id: http://core.svn.wordpress.org/trunk@49351 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-11-16 19:20:09 +00:00
John Blackbourn 170ca32007 Docs: Various docblock corrections and improvements. 
See #50768

Built from https://develop.svn.wordpress.org/trunk@49597


git-svn-id: http://core.svn.wordpress.org/trunk@49335 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-11-14 16:35:06 +00:00
Sergey Biryukov a2d42351c5 Text Changes: Unify various "Back to..." vs. "Return to..." vs. "Go to..." strings. 
Standardize on "Go to..." as a more appropriate option for most cases.

Props garrett-eclipse, kharisblank, audrasjb, ramiy, valentinbora.
Fixes #47235.
Built from https://develop.svn.wordpress.org/trunk@49539


git-svn-id: http://core.svn.wordpress.org/trunk@49277 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-11-09 10:53:10 +00:00
Sergey Biryukov 0a70f9b004 Docs: Document the return value of `wp_prepare_attachment_for_js()` using hash notation. 
Props stevenlinx, Mista-Flo, johnbillion.
Fixes #50835.
Built from https://develop.svn.wordpress.org/trunk@49281


git-svn-id: http://core.svn.wordpress.org/trunk@49041 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-10-23 00:43:07 +00:00
Sergey Biryukov e856a91321 Media: Introduce a filter for `wp_get_attachment_image()` HTML output. 
Props prionkor, antpb, donmhico, audrasjb, Mista-Flo, hellofromTonya.
Fixes #50801.
Built from https://develop.svn.wordpress.org/trunk@49234


git-svn-id: http://core.svn.wordpress.org/trunk@48996 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-10-20 15:31:06 +00:00
Helen Hou-Sandí edb64a3d8e Media: Indicate if item is or was used as a site option in the details modal. 
Props Mista-Flo, melchoyce.
Fixes #42063.

Built from https://develop.svn.wordpress.org/trunk@49223


git-svn-id: http://core.svn.wordpress.org/trunk@48985 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-10-20 03:14:06 +00:00
Sergey Biryukov e209e00734 Coding Standards: Fix WPCS issues in [49207]. 
See #46866.
Built from https://develop.svn.wordpress.org/trunk@49209


git-svn-id: http://core.svn.wordpress.org/trunk@48971 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-10-19 20:45:06 +00:00
antpb 9556c08b35 Media: Add 'Uploaded to' for individual media items in the media editor. 
Adds a link in the media editor showing which post a media item was uploaded to.
Props karmatosed, garrett-eclipse, Mista-Flo, SergeyBiryukov, joemcgill, hellofromTonya.
Fixes #46866.

Built from https://develop.svn.wordpress.org/trunk@49207


git-svn-id: http://core.svn.wordpress.org/trunk@48969 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-10-19 20:29:05 +00:00
Sergey Biryukov 0e3147c40e Coding Standards: Replace alias PHP functions with the canonical names. 
Using the canonical function name for PHP functions is strongly recommended, as aliases may be deprecated or removed without (much) warning.

This replaces all uses of the following:
* `join()` with `implode()`
* `sizeof()` with `count()`
* `is_writeable()` with `is_writable()`
* `doubleval()` with a `(float)` cast

In part, this is a follow-up to #47746.

Props jrf.
See #50767.
Built from https://develop.svn.wordpress.org/trunk@49193


git-svn-id: http://core.svn.wordpress.org/trunk@48955 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-10-18 17:27:06 +00:00
John Blackbourn 33070fb7d2 Media: Allow the `gallery_shortcode()` and `get_image_tag()` functions to correctly accept an array of image dimensions. 
These functions did previously accept an array of image dimensions but their class attributes were not properly constructed.

Fixes #51362

Built from https://develop.svn.wordpress.org/trunk@49128


git-svn-id: http://core.svn.wordpress.org/trunk@48890 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-10-11 20:01:06 +00:00
Sergey Biryukov 897f004a9c General: Replace older-style PHP type conversion functions with type casts. 
This improves performance, readability, and consistency throughout core.

* `intval()` → `(int)`
* `strval()` → `(string)`
* `floatval()` → `(float)`

Props ayeshrajans.
Fixes #42918.
Built from https://develop.svn.wordpress.org/trunk@49108


git-svn-id: http://core.svn.wordpress.org/trunk@48870 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-10-08 21:15:13 +00:00
John Blackbourn aba2165aae Media: Standardise the description for image size parameters. 
This brings continuity to all the image related functions and filters which accept or pass a size parameter.

Props dilipbheda, johnbillion

Fixes #47364

Built from https://develop.svn.wordpress.org/trunk@49021


git-svn-id: http://core.svn.wordpress.org/trunk@48783 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-09-20 16:23:07 +00:00
John Blackbourn 0b2e31a7f8 Docs: Inline documentation improvements for media related functions and hooks. 
See #47364, #50768

Built from https://develop.svn.wordpress.org/trunk@49020


git-svn-id: http://core.svn.wordpress.org/trunk@48782 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-09-20 15:55:10 +00:00
John Blackbourn ecfff6fe80 Media: Correct the image thumbnail logic in media templates. 
This ensures the correct data properties are checked before displaying image thumbnails.

Props chetan200891

Fixes #49655

Built from https://develop.svn.wordpress.org/trunk@49012


git-svn-id: http://core.svn.wordpress.org/trunk@48774 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-09-20 13:15:04 +00:00
Sergey Biryukov af523447f4 Media: Make the `is_gd_image()` function available on front end. 
This avoids a fatal error if a plugin calls image creation or editing functions like `wp_imagecreatetruecolor()` outside of the admin.

Follow-up to [48798]

Props BackuPs.
Fixes #51174. See #50833.
Built from https://develop.svn.wordpress.org/trunk@48905


git-svn-id: http://core.svn.wordpress.org/trunk@48667 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-08-28 16:45:06 +00:00
Sergey Biryukov 0c8644c071 Docs: Improve documentation for `wp_lazy_loading_enabled()` per the documentation standards. 
See #50768.
Built from https://develop.svn.wordpress.org/trunk@48855


git-svn-id: http://core.svn.wordpress.org/trunk@48617 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-08-24 22:16:06 +00:00
Sergey Biryukov c3a7d6c379 Docs: Add a `@since` note about the `$srcset` and `$sizes` attributes added to `wp_get_attachment_image()`. 
Follow-up to [34855].

See #51122.
Built from https://develop.svn.wordpress.org/trunk@48853


git-svn-id: http://core.svn.wordpress.org/trunk@48615 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-08-24 22:12:03 +00:00
Sergey Biryukov 147ed6ebdb Docs: Add documentation and a `@since` note about the `loading` attribute added to `wp_get_attachment_image()`. 
Follow-up to [48272].

Props audrasjb.
Fixes #51122.
Built from https://develop.svn.wordpress.org/trunk@48852


git-svn-id: http://core.svn.wordpress.org/trunk@48614 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-08-24 22:04:04 +00:00
Sergey Biryukov 12c8f0e678 Code Modernization: Introduce `is_gd_image()` to check for PHP 8 `GdImage` object instances. 
In PHP 8, the GD extension uses `GdImage` objects instead of resources for its underlying data structures.

This updates the existing `is_resource()` calls for image resources in core to accomodate for `GdImage` instances as well.

Props ayeshrajans, jrf.
Fixes #50833.
Built from https://develop.svn.wordpress.org/trunk@48798


git-svn-id: http://core.svn.wordpress.org/trunk@48560 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-08-16 13:33:09 +00:00
Sergey Biryukov 1f85e7484f Docs: Consistently use third-person singular verbs for various filter descriptions, per the documentation standards. 
See #50768.
Built from https://develop.svn.wordpress.org/trunk@48782


git-svn-id: http://core.svn.wordpress.org/trunk@48544 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-08-11 00:34:08 +00:00
Sergey Biryukov b1c6077591 Media: Remove extra space from the `width` attribute in `wp_playlist_shortcode()` output. 
Props hvar.
Fixes #50840.
Built from https://develop.svn.wordpress.org/trunk@48716


git-svn-id: http://core.svn.wordpress.org/trunk@48478 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-08-04 12:47:06 +00:00
Sergey Biryukov 5d21bc9386 Docs: Correct description for `wp_filter_content_tags()` per the documentation standards. 
DocBlocks should start with a brief, one sentence explanation of the purpose of the function spanning a maximum of two lines.

Follow-up to [48648].

See #44427.
Built from https://develop.svn.wordpress.org/trunk@48649


git-svn-id: http://core.svn.wordpress.org/trunk@48411 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-07-27 21:49:04 +00:00
Andrew Ozz 000086828f Media: Improve inline docs for `wp_filter_content_tags()`. 
Props johnstonphilip.
See #44427.
Built from https://develop.svn.wordpress.org/trunk@48648


git-svn-id: http://core.svn.wordpress.org/trunk@48410 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-07-27 21:06:03 +00:00
Sergey Biryukov 703a978a77 Administration: Capitalize `Trash` consistently in various messages. 
When used as a noun referring to the "virtual" place, `Trash` should be capitalized.

Follow-up to [47233], [48352].

See #45317, #40244.
Built from https://develop.svn.wordpress.org/trunk@48594


git-svn-id: http://core.svn.wordpress.org/trunk@48356 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-07-24 00:21:03 +00:00
Sergey Biryukov 3061a680a9 Media: Pass the attachment ID to the `wp_image_file_matches_image_meta` filter. 
Props spacedmonkey.
Fixes #50722.
Built from https://develop.svn.wordpress.org/trunk@48547


git-svn-id: http://core.svn.wordpress.org/trunk@48309 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-07-21 16:55:08 +00:00
whyisjake 69aaab5108 Feeds: Ensure that galleries can be output as a list of links in feeds. 
Adjusts the gallery shortcode handler to check for the `link` attribute when outputting to a feed.

Fixes #22101.

Props ifrins, mdgl, SergeyBiryukov, chriscct7, stevenkword, iworks, DrewAPicture, birgire, whyisjake.

Built from https://develop.svn.wordpress.org/trunk@48496


git-svn-id: http://core.svn.wordpress.org/trunk@48258 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-07-16 21:31:03 +00:00
Andrew Ozz 618c32686e Media: Fix `wp_image_file_matches_image_meta()` to also match when the original image URL is used. 
Also refreshes and fixes some of the unit tests for media, and replaces test-image-large.png with test-image-large.jpg which is larger to allow testing of `original_image` in the image meta.

Fixes #50628.


Built from https://develop.svn.wordpress.org/trunk@48454


git-svn-id: http://core.svn.wordpress.org/trunk@48223 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-07-12 21:20:03 +00:00
Andrew Ozz af35cbeee8 Media: Tiny logic fix in `wp_image_file_matches_image_meta()` after [48329]. No need to look in `sizes` if the full size image path/URL matches. 
See #50543.
Built from https://develop.svn.wordpress.org/trunk@48430


git-svn-id: http://core.svn.wordpress.org/trunk@48199 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-07-10 23:06:04 +00:00
whyisjake 81b809e3d6 Administration: Move more table strings to sentence casing. 
WordPress as a project has moved largely to sentence casing for UI elements in the admin. This commit moves several string$

* Move to trash
* Mark as spam
* Permanently delete comment
* Approve comment
* In response to
* Bulk actions
* Not spam
* Sumitted on
* Delete permanently
* Add media
* Upload files
* Upload images
* Add media
* Bulk select
* Restore from trash
* Search media
* Attachment details
* Create gallery
* Edit gallery
* Cancel gallery
* Add to gallery
* Image details
* Replace image
* Cancel edit
* Edit image
* Choose image
* Select and crop
* Skip cropping
* Crop image
* Audio details
* Replace audio
* Add audio source
* Video details
* Replace video
* Add video source
* Select poster image
* Add subtitles
* Create audio playlist
* Edit audio playlist.
* Cancel audio playlist
* Create video playlist
* Edit video playlist
* Add to video playlist
* Filter media


Fixes #40244.
Props afercia, bhargavbhandari90, rcutmore, webzunft, manojlovic, jeremyfelt, desrosj, lschuyler, SergeyBiryukov, whyisjake. 


Built from https://develop.svn.wordpress.org/trunk@48352


git-svn-id: http://core.svn.wordpress.org/trunk@48121 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-07-06 21:52:21 +00:00
desrosj ef0881750c Docs: Correct typo introduced in [48288]. 
See #42775.
Built from https://develop.svn.wordpress.org/trunk@48343


git-svn-id: http://core.svn.wordpress.org/trunk@48112 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-07-06 19:10:02 +00:00
Andrew Ozz 08dbc4c3bb Media: 
- Introduce `wp_image_file_matches_image_meta()` utility function to check whether the image meta (retrieved by attachment ID) matches an image path or URI. A mismatch may happen in some cases, for example after the posts have been exported from one website and imported in another.
- Add unit tests for the new function.
- Improve `wp_image_src_get_dimensions()` a bit and use the new function to prevent these edge cases.

Fixes #50543.
Built from https://develop.svn.wordpress.org/trunk@48329


git-svn-id: http://core.svn.wordpress.org/trunk@48098 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-07-05 23:32:03 +00:00
Andrew Ozz 86317e3e85 Media: Show an error message when a `.heic` file is uploaded that this type of files cannot be displayed in a web browser and suggesting to convert to JPEG. The message is shown by using filters, plugins that want to handle uploading of `.heic` files can remove it. 
Props mattheweppelsheimer, mikeschroder, jeffr0, andraganescu, desrosj, azaozz.
Fixes #42775.
Built from https://develop.svn.wordpress.org/trunk@48288


git-svn-id: http://core.svn.wordpress.org/trunk@48057 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-07-03 23:15:03 +00:00
Sergey Biryukov ec571bdcf6 Docs: Spell "falsey" in a consistent way. 
See #49572.
Built from https://develop.svn.wordpress.org/trunk@48275


git-svn-id: http://core.svn.wordpress.org/trunk@48044 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-07-02 11:30:02 +00:00
Felix Arntz 1d010a49c7 Media: Improve support for opting out of lazy-loading for template images. 
With this changeset, in addition to the already present `wp_lazy_loading_enabled` filter, developers can now opt out of lazy-loading template images via `wp_get_attachment_image()` by passing a `loading` attribute with boolean value `false`. This can be used e.g. by theme developers on images which are very likely to be in the initial viewport.

This changeset also improves related test coverage.

Props adamsilverstein, azaozz, joemcgill, johnbillion.
See #50425, #44427.

Built from https://develop.svn.wordpress.org/trunk@48272


git-svn-id: http://core.svn.wordpress.org/trunk@48041 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-07-02 02:03:03 +00:00
Felix Arntz 70c8bd2333 Media: Only add `loading` attribute to `img` tags using double quotes. 
Props azaozz.
Fixes #50367.

Built from https://develop.svn.wordpress.org/trunk@48239


git-svn-id: http://core.svn.wordpress.org/trunk@48008 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-06-30 20:34:06 +00:00
Felix Arntz e92ab44880 Media: Introduce `wp_img_tag_add_width_and_height_attr()` to add dimension attributes to images. 
Following up on [48170], this changeset moves the new logic to add missing `img` dimension attributes into a separate function that is run first within `wp_filter_content_tags()`. It also adds a utility function `wp_image_src_get_dimensions()` with logic reused from `wp_image_add_srcset_and_sizes()`, and it ensures that `width` and `height` attributes only get added if both of the attributes are missing on the original `img` tag.

This changeset furthermore improves test coverage and separates tests for the different aspects of `img` tag modification.

Props azaozz.
Fixes #50367. See #44427.

Built from https://develop.svn.wordpress.org/trunk@48237


git-svn-id: http://core.svn.wordpress.org/trunk@48006 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-06-30 19:30:08 +00:00
Sergey Biryukov c892c420b7 Docs: Miscellaneous DocBlock corrections. 
See #49572.
Built from https://develop.svn.wordpress.org/trunk@48198


git-svn-id: http://core.svn.wordpress.org/trunk@47967 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-06-28 11:53:04 +00:00
Sergey Biryukov 40c389c95e Docs: Standardize on "Returning a value from the filter" vs. "Passing a value to the filter". 
The filter is the callback function added with `add_filter()`, therefore the hook passes a value to the filter, and the filter returns a value to change its behaviour.

The documentation is referring to the latter.

Props johnbillion.
See #49572, #16557.
Built from https://develop.svn.wordpress.org/trunk@48185


git-svn-id: http://core.svn.wordpress.org/trunk@47954 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-06-26 18:49:09 +00:00
Felix Arntz f18870ae4e Media: Ensure images have dimensions to reduce layout shift and facilitate lazy-loading. 
This changeset ensures that attachment images which are inserted without `width` and `height` attributes still receive them in the frontend, to reduce cumulative layout shift. Adding the dimensions happens as part of the logic for adding `srcset` and `sizes` attributes, which already assume the specific width and height of the respective image.

Images are now only lazy-loaded if they have `width` and `height` attributes present. While missing these attributes itself is what causes layout shifts, lazy-loading such images can make this problem more apparent to the user.

Props adamsilverstein, westonruter.
Fixes #50367. See #44427.

Built from https://develop.svn.wordpress.org/trunk@48170


git-svn-id: http://core.svn.wordpress.org/trunk@47939 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-06-25 18:45:08 +00:00
Sergey Biryukov be16bb9fba Docs: Remove extra spaces from `@param` tags. 
Per the documentation standards, `@param` tags should be aligned with each other, but not with the `@return` tag.

See #49572.
Built from https://develop.svn.wordpress.org/trunk@48110


git-svn-id: http://core.svn.wordpress.org/trunk@47879 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-06-20 12:58:10 +00:00
Sergey Biryukov b16368c268 Docs: Remove `@staticvar` tags from core. 
The tag was supported in phpDocumentor 1.x, but is no longer supported in 2.x and 3.x.

Usage of static variables is considered an internal implementation detail and has no information value for someone reading the docs.

Props alishanvr, jrf.
Fixes #50426.
Built from https://develop.svn.wordpress.org/trunk@48109


git-svn-id: http://core.svn.wordpress.org/trunk@47878 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-06-20 12:40:12 +00:00
Sergey Biryukov e13c363b17 Docs: Capitalize "ID", when referring to a post ID, term ID, etc. in a more consistent way. 
See #49572.
Built from https://develop.svn.wordpress.org/trunk@48104


git-svn-id: http://core.svn.wordpress.org/trunk@47873 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-06-20 12:02:12 +00:00
John Blackbourn 1a77bb81d8 Docs: Remove unnecessary variables names from `@return` tags. 
See #49572.
Built from https://develop.svn.wordpress.org/trunk@48100


git-svn-id: http://core.svn.wordpress.org/trunk@47869 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-06-19 22:55:12 +00:00
John Blackbourn 37234874a5 Docs: Misc improvements to inline docs. 
See #49572.
Built from https://develop.svn.wordpress.org/trunk@48099


git-svn-id: http://core.svn.wordpress.org/trunk@47868 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-06-19 22:28:13 +00:00
Sergey Biryukov de59ad23a4 Docs: Consistently include an empty line between `@since` tag and `@see`, `@link`, or `@global`, per the documentation standards. 
See #49572.
Built from https://develop.svn.wordpress.org/trunk@48067


git-svn-id: http://core.svn.wordpress.org/trunk@47834 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-06-16 21:07:14 +00:00
John Blackbourn f89f744fb2 Media: Ensure a consistent structure for the array returned by `wp_get_attachment_image_src()`. 
The array returned by this function previously included a fourth element only when an intermediate image size was used. This change ensures a consistent structure in the returned array regardless of the function's internal behaviour.

Props wido, joemcgill, johnbillion

Fixes #46113
Built from https://develop.svn.wordpress.org/trunk@47748


git-svn-id: http://core.svn.wordpress.org/trunk@47524 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-05-02 22:57:06 +00:00
Andrew Ozz 0e38f8ed26 Media: Enable lazy-loading of images by automatically adding the new `loading="lazy"` attribute to image tags on the front-end. 
- Introduces `wp_lazy_loading_enabled()`, `wp_filter_content_tags()`, `wp_img_tag_add_loading_attr()`, and `wp_img_tag_add_srcset_and_sizes_attr()` functions.
- Introduces `wp_lazy_loading_enabled`, `wp_img_tag_add_loading_attr`, and `wp_img_tag_add_srcset_and_sizes_attr` filters.

Props flixos90, addyosmani, mor10, swissspidy, pierlo, westonruter, spacedmonkey, mikeschroder, jonoaldersonwp, peterwilsoncc, narwen, jeffpaul, OptimizingMatters, futtta, mukeshpanchal27, azaozz.

Fixes #44427.
Built from https://develop.svn.wordpress.org/trunk@47554


git-svn-id: http://core.svn.wordpress.org/trunk@47329 1a063a9b-81f0-0310-95a4-ce76da25c4cd
 2020-04-08 00:55:07 +00:00