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KSES: Document HTML allow list is in lowercase.

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Expand documentation of the `wp_kses_allowed_html` hook to indicate that developers must add permitted HTML tags and attributes in lowercase for KSES to recognise they are permitted.

Props r-a-y, SergeyBiryukov, peterwilsoncc.
Fixes #55407.
See #53399.


Built from https://develop.svn.wordpress.org/trunk@53034


git-svn-id: http://core.svn.wordpress.org/trunk@52623 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Peter Wilson 2022-03-31 03:54:02 +00:00
parent 147a936f33
commit 18ace8bef4
2 changed files with 5 additions and 1 deletions
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4
wp-includes/kses.php
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@ -820,6 +820,10 @@ function wp_kses_allowed_html( $context = '' ) {
/** /**
* Filters the HTML tags that are allowed for a given context. * Filters the HTML tags that are allowed for a given context.
* *
* HTML tags and attribute names are case-insensitive in HTML but must be
* added to the KSES allow list in lowercase. An item added to the allow list
* in upper or mixed case will not recognized as permitted by KSES.
*
* @since 3.5.0 * @since 3.5.0
* *
* @param array[] $html Allowed HTML tags. * @param array[] $html Allowed HTML tags.

2
wp-includes/version.php
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@ -16,7 +16,7 @@
* *
* @global string $wp_version * @global string $wp_version
*/ */
$wp_version = '6.0-alpha-53033'; $wp_version = '6.0-alpha-53034';
/** /**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema. * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.