From 5bf66662a9bdd62c5bccab15e607cd95cfb8fcab Mon Sep 17 00:00:00 2001
From: Charles Cabergs <me@cacharle.xyz>
Date: Mon, 27 Jul 2020 10:05:23 +0200
Subject: Removed wordpress and phpmyadmin, my server doesn't handle it well
 and it brings shame on my familly

---
 srcs/wordpress/wp-includes/kses.php | 2332 -----------------------------------
 1 file changed, 2332 deletions(-)
 delete mode 100644 srcs/wordpress/wp-includes/kses.php

(limited to 'srcs/wordpress/wp-includes/kses.php')

diff --git a/srcs/wordpress/wp-includes/kses.php b/srcs/wordpress/wp-includes/kses.php
deleted file mode 100644
index d2f3cbb..0000000
--- a/srcs/wordpress/wp-includes/kses.php
+++ /dev/null
@@ -1,2332 +0,0 @@
-<?php
-/**
- * kses 0.2.2 - HTML/XHTML filter that only allows some elements and attributes
- * Copyright (C) 2002, 2003, 2005  Ulf Harnhammar
- *
- * This program is free software and open source software; you can redistribute
- * it and/or modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the License,
- * or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
- * http://www.gnu.org/licenses/gpl.html
- *
- * [kses strips evil scripts!]
- *
- * Added wp_ prefix to avoid conflicts with existing kses users
- *
- * @version 0.2.2
- * @copyright (C) 2002, 2003, 2005
- * @author Ulf Harnhammar <http://advogato.org/person/metaur/>
- *
- * @package External
- * @subpackage KSES
- */
-
-/**
- * Specifies the default allowable HTML tags.
- *
- * Using `CUSTOM_TAGS` is not recommended and should be considered deprecated. The
- * {@see 'wp_kses_allowed_html'} filter is more powerful and supplies context.
- *
- * @see wp_kses_allowed_html()
- * @since 1.2.0
- *
- * @var array[]|bool Array of default allowable HTML tags, or false to use the defaults.
- */
-if ( ! defined( 'CUSTOM_TAGS' ) ) {
-	define( 'CUSTOM_TAGS', false );
-}
-
-// Ensure that these variables are added to the global namespace
-// (e.g. if using namespaces / autoload in the current PHP environment).
-global $allowedposttags, $allowedtags, $allowedentitynames;
-
-if ( ! CUSTOM_TAGS ) {
-	/**
-	 * KSES global for default allowable HTML tags.
-	 *
-	 * Can be overridden with the `CUSTOM_TAGS` constant.
-	 *
-	 * @var array[] $allowedposttags Array of default allowable HTML tags.
-	 * @since 2.0.0
-	 */
-	$allowedposttags = array(
-		'address'    => array(),
-		'a'          => array(
-			'href'     => true,
-			'rel'      => true,
-			'rev'      => true,
-			'name'     => true,
-			'target'   => true,
-			'download' => array(
-				'valueless' => 'y',
-			),
-		),
-		'abbr'       => array(),
-		'acronym'    => array(),
-		'area'       => array(
-			'alt'    => true,
-			'coords' => true,
-			'href'   => true,
-			'nohref' => true,
-			'shape'  => true,
-			'target' => true,
-		),
-		'article'    => array(
-			'align'    => true,
-			'dir'      => true,
-			'lang'     => true,
-			'xml:lang' => true,
-		),
-		'aside'      => array(
-			'align'    => true,
-			'dir'      => true,
-			'lang'     => true,
-			'xml:lang' => true,
-		),
-		'audio'      => array(
-			'autoplay' => true,
-			'controls' => true,
-			'loop'     => true,
-			'muted'    => true,
-			'preload'  => true,
-			'src'      => true,
-		),
-		'b'          => array(),
-		'bdo'        => array(
-			'dir' => true,
-		),
-		'big'        => array(),
-		'blockquote' => array(
-			'cite'     => true,
-			'lang'     => true,
-			'xml:lang' => true,
-		),
-		'br'         => array(),
-		'button'     => array(
-			'disabled' => true,
-			'name'     => true,
-			'type'     => true,
-			'value'    => true,
-		),
-		'caption'    => array(
-			'align' => true,
-		),
-		'cite'       => array(
-			'dir'  => true,
-			'lang' => true,
-		),
-		'code'       => array(),
-		'col'        => array(
-			'align'   => true,
-			'char'    => true,
-			'charoff' => true,
-			'span'    => true,
-			'dir'     => true,
-			'valign'  => true,
-			'width'   => true,
-		),
-		'colgroup'   => array(
-			'align'   => true,
-			'char'    => true,
-			'charoff' => true,
-			'span'    => true,
-			'valign'  => true,
-			'width'   => true,
-		),
-		'del'        => array(
-			'datetime' => true,
-		),
-		'dd'         => array(),
-		'dfn'        => array(),
-		'details'    => array(
-			'align'    => true,
-			'dir'      => true,
-			'lang'     => true,
-			'open'     => true,
-			'xml:lang' => true,
-		),
-		'div'        => array(
-			'align'    => true,
-			'dir'      => true,
-			'lang'     => true,
-			'xml:lang' => true,
-		),
-		'dl'         => array(),
-		'dt'         => array(),
-		'em'         => array(),
-		'fieldset'   => array(),
-		'figure'     => array(
-			'align'    => true,
-			'dir'      => true,
-			'lang'     => true,
-			'xml:lang' => true,
-		),
-		'figcaption' => array(
-			'align'    => true,
-			'dir'      => true,
-			'lang'     => true,
-			'xml:lang' => true,
-		),
-		'font'       => array(
-			'color' => true,
-			'face'  => true,
-			'size'  => true,
-		),
-		'footer'     => array(
-			'align'    => true,
-			'dir'      => true,
-			'lang'     => true,
-			'xml:lang' => true,
-		),
-		'h1'         => array(
-			'align' => true,
-		),
-		'h2'         => array(
-			'align' => true,
-		),
-		'h3'         => array(
-			'align' => true,
-		),
-		'h4'         => array(
-			'align' => true,
-		),
-		'h5'         => array(
-			'align' => true,
-		),
-		'h6'         => array(
-			'align' => true,
-		),
-		'header'     => array(
-			'align'    => true,
-			'dir'      => true,
-			'lang'     => true,
-			'xml:lang' => true,
-		),
-		'hgroup'     => array(
-			'align'    => true,
-			'dir'      => true,
-			'lang'     => true,
-			'xml:lang' => true,
-		),
-		'hr'         => array(
-			'align'   => true,
-			'noshade' => true,
-			'size'    => true,
-			'width'   => true,
-		),
-		'i'          => array(),
-		'img'        => array(
-			'alt'      => true,
-			'align'    => true,
-			'border'   => true,
-			'height'   => true,
-			'hspace'   => true,
-			'longdesc' => true,
-			'vspace'   => true,
-			'src'      => true,
-			'usemap'   => true,
-			'width'    => true,
-		),
-		'ins'        => array(
-			'datetime' => true,
-			'cite'     => true,
-		),
-		'kbd'        => array(),
-		'label'      => array(
-			'for' => true,
-		),
-		'legend'     => array(
-			'align' => true,
-		),
-		'li'         => array(
-			'align' => true,
-			'value' => true,
-		),
-		'map'        => array(
-			'name' => true,
-		),
-		'mark'       => array(),
-		'menu'       => array(
-			'type' => true,
-		),
-		'nav'        => array(
-			'align'    => true,
-			'dir'      => true,
-			'lang'     => true,
-			'xml:lang' => true,
-		),
-		'p'          => array(
-			'align'    => true,
-			'dir'      => true,
-			'lang'     => true,
-			'xml:lang' => true,
-		),
-		'pre'        => array(
-			'width' => true,
-		),
-		'q'          => array(
-			'cite' => true,
-		),
-		's'          => array(),
-		'samp'       => array(),
-		'span'       => array(
-			'dir'      => true,
-			'align'    => true,
-			'lang'     => true,
-			'xml:lang' => true,
-		),
-		'section'    => array(
-			'align'    => true,
-			'dir'      => true,
-			'lang'     => true,
-			'xml:lang' => true,
-		),
-		'small'      => array(),
-		'strike'     => array(),
-		'strong'     => array(),
-		'sub'        => array(),
-		'summary'    => array(
-			'align'    => true,
-			'dir'      => true,
-			'lang'     => true,
-			'xml:lang' => true,
-		),
-		'sup'        => array(),
-		'table'      => array(
-			'align'       => true,
-			'bgcolor'     => true,
-			'border'      => true,
-			'cellpadding' => true,
-			'cellspacing' => true,
-			'dir'         => true,
-			'rules'       => true,
-			'summary'     => true,
-			'width'       => true,
-		),
-		'tbody'      => array(
-			'align'   => true,
-			'char'    => true,
-			'charoff' => true,
-			'valign'  => true,
-		),
-		'td'         => array(
-			'abbr'    => true,
-			'align'   => true,
-			'axis'    => true,
-			'bgcolor' => true,
-			'char'    => true,
-			'charoff' => true,
-			'colspan' => true,
-			'dir'     => true,
-			'headers' => true,
-			'height'  => true,
-			'nowrap'  => true,
-			'rowspan' => true,
-			'scope'   => true,
-			'valign'  => true,
-			'width'   => true,
-		),
-		'textarea'   => array(
-			'cols'     => true,
-			'rows'     => true,
-			'disabled' => true,
-			'name'     => true,
-			'readonly' => true,
-		),
-		'tfoot'      => array(
-			'align'   => true,
-			'char'    => true,
-			'charoff' => true,
-			'valign'  => true,
-		),
-		'th'         => array(
-			'abbr'    => true,
-			'align'   => true,
-			'axis'    => true,
-			'bgcolor' => true,
-			'char'    => true,
-			'charoff' => true,
-			'colspan' => true,
-			'headers' => true,
-			'height'  => true,
-			'nowrap'  => true,
-			'rowspan' => true,
-			'scope'   => true,
-			'valign'  => true,
-			'width'   => true,
-		),
-		'thead'      => array(
-			'align'   => true,
-			'char'    => true,
-			'charoff' => true,
-			'valign'  => true,
-		),
-		'title'      => array(),
-		'tr'         => array(
-			'align'   => true,
-			'bgcolor' => true,
-			'char'    => true,
-			'charoff' => true,
-			'valign'  => true,
-		),
-		'track'      => array(
-			'default' => true,
-			'kind'    => true,
-			'label'   => true,
-			'src'     => true,
-			'srclang' => true,
-		),
-		'tt'         => array(),
-		'u'          => array(),
-		'ul'         => array(
-			'type' => true,
-		),
-		'ol'         => array(
-			'start'    => true,
-			'type'     => true,
-			'reversed' => true,
-		),
-		'var'        => array(),
-		'video'      => array(
-			'autoplay' => true,
-			'controls' => true,
-			'height'   => true,
-			'loop'     => true,
-			'muted'    => true,
-			'poster'   => true,
-			'preload'  => true,
-			'src'      => true,
-			'width'    => true,
-		),
-	);
-
-	/**
-	 * @var array[] $allowedtags Array of KSES allowed HTML elements.
-	 * @since 1.0.0
-	 */
-	$allowedtags = array(
-		'a'          => array(
-			'href'  => true,
-			'title' => true,
-		),
-		'abbr'       => array(
-			'title' => true,
-		),
-		'acronym'    => array(
-			'title' => true,
-		),
-		'b'          => array(),
-		'blockquote' => array(
-			'cite' => true,
-		),
-		'cite'       => array(),
-		'code'       => array(),
-		'del'        => array(
-			'datetime' => true,
-		),
-		'em'         => array(),
-		'i'          => array(),
-		'q'          => array(
-			'cite' => true,
-		),
-		's'          => array(),
-		'strike'     => array(),
-		'strong'     => array(),
-	);
-
-	/**
-	 * @var string[] $allowedentitynames Array of KSES allowed HTML entitity names.
-	 * @since 1.0.0
-	 */
-	$allowedentitynames = array(
-		'nbsp',
-		'iexcl',
-		'cent',
-		'pound',
-		'curren',
-		'yen',
-		'brvbar',
-		'sect',
-		'uml',
-		'copy',
-		'ordf',
-		'laquo',
-		'not',
-		'shy',
-		'reg',
-		'macr',
-		'deg',
-		'plusmn',
-		'acute',
-		'micro',
-		'para',
-		'middot',
-		'cedil',
-		'ordm',
-		'raquo',
-		'iquest',
-		'Agrave',
-		'Aacute',
-		'Acirc',
-		'Atilde',
-		'Auml',
-		'Aring',
-		'AElig',
-		'Ccedil',
-		'Egrave',
-		'Eacute',
-		'Ecirc',
-		'Euml',
-		'Igrave',
-		'Iacute',
-		'Icirc',
-		'Iuml',
-		'ETH',
-		'Ntilde',
-		'Ograve',
-		'Oacute',
-		'Ocirc',
-		'Otilde',
-		'Ouml',
-		'times',
-		'Oslash',
-		'Ugrave',
-		'Uacute',
-		'Ucirc',
-		'Uuml',
-		'Yacute',
-		'THORN',
-		'szlig',
-		'agrave',
-		'aacute',
-		'acirc',
-		'atilde',
-		'auml',
-		'aring',
-		'aelig',
-		'ccedil',
-		'egrave',
-		'eacute',
-		'ecirc',
-		'euml',
-		'igrave',
-		'iacute',
-		'icirc',
-		'iuml',
-		'eth',
-		'ntilde',
-		'ograve',
-		'oacute',
-		'ocirc',
-		'otilde',
-		'ouml',
-		'divide',
-		'oslash',
-		'ugrave',
-		'uacute',
-		'ucirc',
-		'uuml',
-		'yacute',
-		'thorn',
-		'yuml',
-		'quot',
-		'amp',
-		'lt',
-		'gt',
-		'apos',
-		'OElig',
-		'oelig',
-		'Scaron',
-		'scaron',
-		'Yuml',
-		'circ',
-		'tilde',
-		'ensp',
-		'emsp',
-		'thinsp',
-		'zwnj',
-		'zwj',
-		'lrm',
-		'rlm',
-		'ndash',
-		'mdash',
-		'lsquo',
-		'rsquo',
-		'sbquo',
-		'ldquo',
-		'rdquo',
-		'bdquo',
-		'dagger',
-		'Dagger',
-		'permil',
-		'lsaquo',
-		'rsaquo',
-		'euro',
-		'fnof',
-		'Alpha',
-		'Beta',
-		'Gamma',
-		'Delta',
-		'Epsilon',
-		'Zeta',
-		'Eta',
-		'Theta',
-		'Iota',
-		'Kappa',
-		'Lambda',
-		'Mu',
-		'Nu',
-		'Xi',
-		'Omicron',
-		'Pi',
-		'Rho',
-		'Sigma',
-		'Tau',
-		'Upsilon',
-		'Phi',
-		'Chi',
-		'Psi',
-		'Omega',
-		'alpha',
-		'beta',
-		'gamma',
-		'delta',
-		'epsilon',
-		'zeta',
-		'eta',
-		'theta',
-		'iota',
-		'kappa',
-		'lambda',
-		'mu',
-		'nu',
-		'xi',
-		'omicron',
-		'pi',
-		'rho',
-		'sigmaf',
-		'sigma',
-		'tau',
-		'upsilon',
-		'phi',
-		'chi',
-		'psi',
-		'omega',
-		'thetasym',
-		'upsih',
-		'piv',
-		'bull',
-		'hellip',
-		'prime',
-		'Prime',
-		'oline',
-		'frasl',
-		'weierp',
-		'image',
-		'real',
-		'trade',
-		'alefsym',
-		'larr',
-		'uarr',
-		'rarr',
-		'darr',
-		'harr',
-		'crarr',
-		'lArr',
-		'uArr',
-		'rArr',
-		'dArr',
-		'hArr',
-		'forall',
-		'part',
-		'exist',
-		'empty',
-		'nabla',
-		'isin',
-		'notin',
-		'ni',
-		'prod',
-		'sum',
-		'minus',
-		'lowast',
-		'radic',
-		'prop',
-		'infin',
-		'ang',
-		'and',
-		'or',
-		'cap',
-		'cup',
-		'int',
-		'sim',
-		'cong',
-		'asymp',
-		'ne',
-		'equiv',
-		'le',
-		'ge',
-		'sub',
-		'sup',
-		'nsub',
-		'sube',
-		'supe',
-		'oplus',
-		'otimes',
-		'perp',
-		'sdot',
-		'lceil',
-		'rceil',
-		'lfloor',
-		'rfloor',
-		'lang',
-		'rang',
-		'loz',
-		'spades',
-		'clubs',
-		'hearts',
-		'diams',
-		'sup1',
-		'sup2',
-		'sup3',
-		'frac14',
-		'frac12',
-		'frac34',
-		'there4',
-	);
-
-	$allowedposttags = array_map( '_wp_add_global_attributes', $allowedposttags );
-} else {
-	$allowedtags     = wp_kses_array_lc( $allowedtags );
-	$allowedposttags = wp_kses_array_lc( $allowedposttags );
-}
-
-/**
- * Filters text content and strips out disallowed HTML.
- *
- * This function makes sure that only the allowed HTML element names, attribute
- * names, attribute values, and HTML entities will occur in the given text string.
- *
- * This function expects unslashed data.
- *
- * @see wp_kses_post() for specifically filtering post content and fields.
- * @see wp_allowed_protocols() for the default allowed protocols in link URLs.
- *
- * @since 1.0.0
- *
- * @param string         $string            Text content to filter.
- * @param array[]|string $allowed_html      An array of allowed HTML elements and attributes, or a
- *                                          context name such as 'post'.
- * @param string[]       $allowed_protocols Array of allowed URL protocols.
- * @return string Filtered content containing only the allowed HTML.
- */
-function wp_kses( $string, $allowed_html, $allowed_protocols = array() ) {
-	if ( empty( $allowed_protocols ) ) {
-		$allowed_protocols = wp_allowed_protocols();
-	}
-	$string = wp_kses_no_null( $string, array( 'slash_zero' => 'keep' ) );
-	$string = wp_kses_normalize_entities( $string );
-	$string = wp_kses_hook( $string, $allowed_html, $allowed_protocols );
-	return wp_kses_split( $string, $allowed_html, $allowed_protocols );
-}
-
-/**
- * Filters one HTML attribute and ensures its value is allowed.
- *
- * This function can escape data in some situations where `wp_kses()` must strip the whole attribute.
- *
- * @since 4.2.3
- *
- * @param string $string  The 'whole' attribute, including name and value.
- * @param string $element The HTML element name to which the attribute belongs.
- * @return string Filtered attribute.
- */
-function wp_kses_one_attr( $string, $element ) {
-	$uris              = wp_kses_uri_attributes();
-	$allowed_html      = wp_kses_allowed_html( 'post' );
-	$allowed_protocols = wp_allowed_protocols();
-	$string            = wp_kses_no_null( $string, array( 'slash_zero' => 'keep' ) );
-
-	// Preserve leading and trailing whitespace.
-	$matches = array();
-	preg_match( '/^\s*/', $string, $matches );
-	$lead = $matches[0];
-	preg_match( '/\s*$/', $string, $matches );
-	$trail = $matches[0];
-	if ( empty( $trail ) ) {
-		$string = substr( $string, strlen( $lead ) );
-	} else {
-		$string = substr( $string, strlen( $lead ), -strlen( $trail ) );
-	}
-
-	// Parse attribute name and value from input.
-	$split = preg_split( '/\s*=\s*/', $string, 2 );
-	$name  = $split[0];
-	if ( count( $split ) == 2 ) {
-		$value = $split[1];
-
-		// Remove quotes surrounding $value.
-		// Also guarantee correct quoting in $string for this one attribute.
-		if ( '' == $value ) {
-			$quote = '';
-		} else {
-			$quote = $value[0];
-		}
-		if ( '"' == $quote || "'" == $quote ) {
-			if ( substr( $value, -1 ) != $quote ) {
-				return '';
-			}
-			$value = substr( $value, 1, -1 );
-		} else {
-			$quote = '"';
-		}
-
-		// Sanitize quotes, angle braces, and entities.
-		$value = esc_attr( $value );
-
-		// Sanitize URI values.
-		if ( in_array( strtolower( $name ), $uris ) ) {
-			$value = wp_kses_bad_protocol( $value, $allowed_protocols );
-		}
-
-		$string = "$name=$quote$value$quote";
-		$vless  = 'n';
-	} else {
-		$value = '';
-		$vless = 'y';
-	}
-
-	// Sanitize attribute by name.
-	wp_kses_attr_check( $name, $value, $string, $vless, $element, $allowed_html );
-
-	// Restore whitespace.
-	return $lead . $string . $trail;
-}
-
-/**
- * Returns an array of allowed HTML tags and attributes for a given context.
- *
- * @since 3.5.0
- * @since 5.0.1 `form` removed as allowable HTML tag.
- *
- * @global array $allowedposttags
- * @global array $allowedtags
- * @global array $allowedentitynames
- *
- * @param string|array $context The context for which to retrieve tags. Allowed values are 'post',
- *                              'strip', 'data', 'entities', or the name of a field filter such as
- *                              'pre_user_description'.
- * @return array Array of allowed HTML tags and their allowed attributes.
- */
-function wp_kses_allowed_html( $context = '' ) {
-	global $allowedposttags, $allowedtags, $allowedentitynames;
-
-	if ( is_array( $context ) ) {
-		/**
-		 * Filters the HTML that is allowed for a given context.
-		 *
-		 * @since 3.5.0
-		 *
-		 * @param array[]|string $context      Context to judge allowed tags by.
-		 * @param string         $context_type Context name.
-		 */
-		return apply_filters( 'wp_kses_allowed_html', $context, 'explicit' );
-	}
-
-	switch ( $context ) {
-		case 'post':
-			/** This filter is documented in wp-includes/kses.php */
-			$tags = apply_filters( 'wp_kses_allowed_html', $allowedposttags, $context );
-
-			// 5.0.1 removed the `<form>` tag, allow it if a filter is allowing it's sub-elements `<input>` or `<select>`.
-			if ( ! CUSTOM_TAGS && ! isset( $tags['form'] ) && ( isset( $tags['input'] ) || isset( $tags['select'] ) ) ) {
-				$tags = $allowedposttags;
-
-				$tags['form'] = array(
-					'action'         => true,
-					'accept'         => true,
-					'accept-charset' => true,
-					'enctype'        => true,
-					'method'         => true,
-					'name'           => true,
-					'target'         => true,
-				);
-
-				/** This filter is documented in wp-includes/kses.php */
-				$tags = apply_filters( 'wp_kses_allowed_html', $tags, $context );
-			}
-
-			return $tags;
-
-		case 'user_description':
-		case 'pre_user_description':
-			$tags             = $allowedtags;
-			$tags['a']['rel'] = true;
-			/** This filter is documented in wp-includes/kses.php */
-			return apply_filters( 'wp_kses_allowed_html', $tags, $context );
-
-		case 'strip':
-			/** This filter is documented in wp-includes/kses.php */
-			return apply_filters( 'wp_kses_allowed_html', array(), $context );
-
-		case 'entities':
-			/** This filter is documented in wp-includes/kses.php */
-			return apply_filters( 'wp_kses_allowed_html', $allowedentitynames, $context );
-
-		case 'data':
-		default:
-			/** This filter is documented in wp-includes/kses.php */
-			return apply_filters( 'wp_kses_allowed_html', $allowedtags, $context );
-	}
-}
-
-/**
- * You add any KSES hooks here.
- *
- * There is currently only one KSES WordPress hook, {@see 'pre_kses'}, and it is called here.
- * All parameters are passed to the hooks and expected to receive a string.
- *
- * @since 1.0.0
- *
- * @param string          $string            Content to filter through KSES.
- * @param array[]|string  $allowed_html      List of allowed HTML elements.
- * @param string[]        $allowed_protocols Array of allowed URL protocols.
- * @return string Filtered content through {@see 'pre_kses'} hook.
- */
-function wp_kses_hook( $string, $allowed_html, $allowed_protocols ) {
-	/**
-	 * Filters content to be run through kses.
-	 *
-	 * @since 2.3.0
-	 *
-	 * @param string          $string            Content to run through KSES.
-	 * @param array[]|string  $allowed_html      Allowed HTML elements.
-	 * @param string[]        $allowed_protocols Array of allowed URL protocols.
-	 */
-	return apply_filters( 'pre_kses', $string, $allowed_html, $allowed_protocols );
-}
-
-/**
- * Returns the version number of KSES.
- *
- * @since 1.0.0
- *
- * @return string KSES version number.
- */
-function wp_kses_version() {
-	return '0.2.2';
-}
-
-/**
- * Searches for HTML tags, no matter how malformed.
- *
- * It also matches stray `>` characters.
- *
- * @since 1.0.0
- *
- * @global array $pass_allowed_html
- * @global array $pass_allowed_protocols
- *
- * @param string   $string            Content to filter.
- * @param array    $allowed_html      Allowed HTML elements.
- * @param string[] $allowed_protocols Array of allowed URL protocols.
- * @return string Content with fixed HTML tags
- */
-function wp_kses_split( $string, $allowed_html, $allowed_protocols ) {
-	global $pass_allowed_html, $pass_allowed_protocols;
-	$pass_allowed_html      = $allowed_html;
-	$pass_allowed_protocols = $allowed_protocols;
-	return preg_replace_callback( '%(<!--.*?(-->|$))|(<[^>]*(>|$)|>)%', '_wp_kses_split_callback', $string );
-}
-
-/**
- * Helper function listing HTML attributes containing a URL.
- *
- * This function returns a list of all HTML attributes that must contain
- * a URL according to the HTML specification.
- *
- * This list includes URI attributes both allowed and disallowed by KSES.
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes
- *
- * @since 5.0.1
- *
- * @return array HTML attributes that must include a URL.
- */
-function wp_kses_uri_attributes() {
-	$uri_attributes = array(
-		'action',
-		'archive',
-		'background',
-		'cite',
-		'classid',
-		'codebase',
-		'data',
-		'formaction',
-		'href',
-		'icon',
-		'longdesc',
-		'manifest',
-		'poster',
-		'profile',
-		'src',
-		'usemap',
-		'xmlns',
-	);
-
-	/**
-	 * Filters the list of attributes that are required to contain a URL.
-	 *
-	 * Use this filter to add any `data-` attributes that are required to be
-	 * validated as a URL.
-	 *
-	 * @since 5.0.1
-	 *
-	 * @param array $uri_attributes HTML attributes requiring validation as a URL.
-	 */
-	$uri_attributes = apply_filters( 'wp_kses_uri_attributes', $uri_attributes );
-
-	return $uri_attributes;
-}
-
-/**
- * Callback for `wp_kses_split()`.
- *
- * @since 3.1.0
- * @access private
- * @ignore
- *
- * @global array $pass_allowed_html
- * @global array $pass_allowed_protocols
- *
- * @return string
- */
-function _wp_kses_split_callback( $match ) {
-	global $pass_allowed_html, $pass_allowed_protocols;
-	return wp_kses_split2( $match[0], $pass_allowed_html, $pass_allowed_protocols );
-}
-
-/**
- * Callback for `wp_kses_split()` for fixing malformed HTML tags.
- *
- * This function does a lot of work. It rejects some very malformed things like
- * `<:::>`. It returns an empty string, if the element isn't allowed (look ma, no
- * `strip_tags()`!). Otherwise it splits the tag into an element and an attribute
- * list.
- *
- * After the tag is split into an element and an attribute list, it is run
- * through another filter which will remove illegal attributes and once that is
- * completed, will be returned.
- *
- * @access private
- * @ignore
- * @since 1.0.0
- *
- * @param string   $string            Content to filter.
- * @param array    $allowed_html      Allowed HTML elements.
- * @param string[] $allowed_protocols Array of allowed URL protocols.
- * @return string Fixed HTML element
- */
-function wp_kses_split2( $string, $allowed_html, $allowed_protocols ) {
-	$string = wp_kses_stripslashes( $string );
-
-	// It matched a ">" character.
-	if ( substr( $string, 0, 1 ) != '<' ) {
-		return '&gt;';
-	}
-
-	// Allow HTML comments.
-	if ( '<!--' == substr( $string, 0, 4 ) ) {
-		$string = str_replace( array( '<!--', '-->' ), '', $string );
-		while ( $string != ( $newstring = wp_kses( $string, $allowed_html, $allowed_protocols ) ) ) {
-			$string = $newstring;
-		}
-		if ( $string == '' ) {
-			return '';
-		}
-		// prevent multiple dashes in comments
-		$string = preg_replace( '/--+/', '-', $string );
-		// prevent three dashes closing a comment
-		$string = preg_replace( '/-$/', '', $string );
-		return "<!--{$string}-->";
-	}
-
-	// It's seriously malformed.
-	if ( ! preg_match( '%^<\s*(/\s*)?([a-zA-Z0-9-]+)([^>]*)>?$%', $string, $matches ) ) {
-		return '';
-	}
-
-	$slash    = trim( $matches[1] );
-	$elem     = $matches[2];
-	$attrlist = $matches[3];
-
-	if ( ! is_array( $allowed_html ) ) {
-		$allowed_html = wp_kses_allowed_html( $allowed_html );
-	}
-
-	// They are using a not allowed HTML element.
-	if ( ! isset( $allowed_html[ strtolower( $elem ) ] ) ) {
-		return '';
-	}
-
-	// No attributes are allowed for closing elements.
-	if ( $slash != '' ) {
-		return "</$elem>";
-	}
-
-	return wp_kses_attr( $elem, $attrlist, $allowed_html, $allowed_protocols );
-}
-
-/**
- * Removes all attributes, if none are allowed for this element.
- *
- * If some are allowed it calls `wp_kses_hair()` to split them further, and then
- * it builds up new HTML code from the data that `kses_hair()` returns. It also
- * removes `<` and `>` characters, if there are any left. One more thing it does
- * is to check if the tag has a closing XHTML slash, and if it does, it puts one
- * in the returned code as well.
- *
- * @since 1.0.0
- *
- * @param string   $element           HTML element/tag.
- * @param string   $attr              HTML attributes from HTML element to closing HTML element tag.
- * @param array    $allowed_html      Allowed HTML elements.
- * @param string[] $allowed_protocols Array of allowed URL protocols.
- * @return string Sanitized HTML element.
- */
-function wp_kses_attr( $element, $attr, $allowed_html, $allowed_protocols ) {
-	if ( ! is_array( $allowed_html ) ) {
-		$allowed_html = wp_kses_allowed_html( $allowed_html );
-	}
-
-	// Is there a closing XHTML slash at the end of the attributes?
-	$xhtml_slash = '';
-	if ( preg_match( '%\s*/\s*$%', $attr ) ) {
-		$xhtml_slash = ' /';
-	}
-
-	// Are any attributes allowed at all for this element?
-	$element_low = strtolower( $element );
-	if ( empty( $allowed_html[ $element_low ] ) || true === $allowed_html[ $element_low ] ) {
-		return "<$element$xhtml_slash>";
-	}
-
-	// Split it
-	$attrarr = wp_kses_hair( $attr, $allowed_protocols );
-
-	// Go through $attrarr, and save the allowed attributes for this element
-	// in $attr2
-	$attr2 = '';
-	foreach ( $attrarr as $arreach ) {
-		if ( wp_kses_attr_check( $arreach['name'], $arreach['value'], $arreach['whole'], $arreach['vless'], $element, $allowed_html ) ) {
-			$attr2 .= ' ' . $arreach['whole'];
-		}
-	}
-
-	// Remove any "<" or ">" characters
-	$attr2 = preg_replace( '/[<>]/', '', $attr2 );
-
-	return "<$element$attr2$xhtml_slash>";
-}
-
-/**
- * Determines whether an attribute is allowed.
- *
- * @since 4.2.3
- * @since 5.0.0 Add support for `data-*` wildcard attributes.
- *
- * @param string $name         The attribute name. Passed by reference. Returns empty string when not allowed.
- * @param string $value        The attribute value. Passed by reference. Returns a filtered value.
- * @param string $whole        The `name=value` input. Passed by reference. Returns filtered input.
- * @param string $vless        Whether the attribute is valueless. Use 'y' or 'n'.
- * @param string $element      The name of the element to which this attribute belongs.
- * @param array  $allowed_html The full list of allowed elements and attributes.
- * @return bool Whether or not the attribute is allowed.
- */
-function wp_kses_attr_check( &$name, &$value, &$whole, $vless, $element, $allowed_html ) {
-	$allowed_attr = $allowed_html[ strtolower( $element ) ];
-
-	$name_low = strtolower( $name );
-	if ( ! isset( $allowed_attr[ $name_low ] ) || '' == $allowed_attr[ $name_low ] ) {
-		/*
-		 * Allow `data-*` attributes.
-		 *
-		 * When specifying `$allowed_html`, the attribute name should be set as
-		 * `data-*` (not to be mixed with the HTML 4.0 `data` attribute, see
-		 * https://www.w3.org/TR/html40/struct/objects.html#adef-data).
-		 *
-		 * Note: the attribute name should only contain `A-Za-z0-9_-` chars,
-		 * double hyphens `--` are not accepted by WordPress.
-		 */
-		if ( strpos( $name_low, 'data-' ) === 0 && ! empty( $allowed_attr['data-*'] ) && preg_match( '/^data(?:-[a-z0-9_]+)+$/', $name_low, $match ) ) {
-			/*
-			 * Add the whole attribute name to the allowed attributes and set any restrictions
-			 * for the `data-*` attribute values for the current element.
-			 */
-			$allowed_attr[ $match[0] ] = $allowed_attr['data-*'];
-		} else {
-			$name  = '';
-			$value = '';
-			$whole = '';
-			return false;
-		}
-	}
-
-	if ( 'style' == $name_low ) {
-		$new_value = safecss_filter_attr( $value );
-
-		if ( empty( $new_value ) ) {
-			$name  = '';
-			$value = '';
-			$whole = '';
-			return false;
-		}
-
-		$whole = str_replace( $value, $new_value, $whole );
-		$value = $new_value;
-	}
-
-	if ( is_array( $allowed_attr[ $name_low ] ) ) {
-		// there are some checks
-		foreach ( $allowed_attr[ $name_low ] as $currkey => $currval ) {
-			if ( ! wp_kses_check_attr_val( $value, $vless, $currkey, $currval ) ) {
-				$name  = '';
-				$value = '';
-				$whole = '';
-				return false;
-			}
-		}
-	}
-
-	return true;
-}
-
-/**
- * Builds an attribute list from string containing attributes.
- *
- * This function does a lot of work. It parses an attribute list into an array
- * with attribute data, and tries to do the right thing even if it gets weird
- * input. It will add quotes around attribute values that don't have any quotes
- * or apostrophes around them, to make it easier to produce HTML code that will
- * conform to W3C's HTML specification. It will also remove bad URL protocols
- * from attribute values. It also reduces duplicate attributes by using the
- * attribute defined first (`foo='bar' foo='baz'` will result in `foo='bar'`).
- *
- * @since 1.0.0
- *
- * @param string   $attr              Attribute list from HTML element to closing HTML element tag.
- * @param string[] $allowed_protocols Array of allowed URL protocols.
- * @return array[] Array of attribute information after parsing.
- */
-function wp_kses_hair( $attr, $allowed_protocols ) {
-	$attrarr  = array();
-	$mode     = 0;
-	$attrname = '';
-	$uris     = wp_kses_uri_attributes();
-
-	// Loop through the whole attribute list
-
-	while ( strlen( $attr ) != 0 ) {
-		$working = 0; // Was the last operation successful?
-
-		switch ( $mode ) {
-			case 0:
-				if ( preg_match( '/^([-a-zA-Z:]+)/', $attr, $match ) ) {
-					$attrname = $match[1];
-					$working  = 1;
-					$mode     = 1;
-					$attr     = preg_replace( '/^[-a-zA-Z:]+/', '', $attr );
-				}
-
-				break;
-
-			case 1:
-				if ( preg_match( '/^\s*=\s*/', $attr ) ) { // equals sign
-					$working = 1;
-					$mode    = 2;
-					$attr    = preg_replace( '/^\s*=\s*/', '', $attr );
-					break;
-				}
-
-				if ( preg_match( '/^\s+/', $attr ) ) { // valueless
-					$working = 1;
-					$mode    = 0;
-					if ( false === array_key_exists( $attrname, $attrarr ) ) {
-						$attrarr[ $attrname ] = array(
-							'name'  => $attrname,
-							'value' => '',
-							'whole' => $attrname,
-							'vless' => 'y',
-						);
-					}
-					$attr = preg_replace( '/^\s+/', '', $attr );
-				}
-
-				break;
-
-			case 2:
-				if ( preg_match( '%^"([^"]*)"(\s+|/?$)%', $attr, $match ) ) {
-					// "value"
-					$thisval = $match[1];
-					if ( in_array( strtolower( $attrname ), $uris ) ) {
-						$thisval = wp_kses_bad_protocol( $thisval, $allowed_protocols );
-					}
-
-					if ( false === array_key_exists( $attrname, $attrarr ) ) {
-						$attrarr[ $attrname ] = array(
-							'name'  => $attrname,
-							'value' => $thisval,
-							'whole' => "$attrname=\"$thisval\"",
-							'vless' => 'n',
-						);
-					}
-					$working = 1;
-					$mode    = 0;
-					$attr    = preg_replace( '/^"[^"]*"(\s+|$)/', '', $attr );
-					break;
-				}
-
-				if ( preg_match( "%^'([^']*)'(\s+|/?$)%", $attr, $match ) ) {
-					// 'value'
-					$thisval = $match[1];
-					if ( in_array( strtolower( $attrname ), $uris ) ) {
-						$thisval = wp_kses_bad_protocol( $thisval, $allowed_protocols );
-					}
-
-					if ( false === array_key_exists( $attrname, $attrarr ) ) {
-						$attrarr[ $attrname ] = array(
-							'name'  => $attrname,
-							'value' => $thisval,
-							'whole' => "$attrname='$thisval'",
-							'vless' => 'n',
-						);
-					}
-					$working = 1;
-					$mode    = 0;
-					$attr    = preg_replace( "/^'[^']*'(\s+|$)/", '', $attr );
-					break;
-				}
-
-				if ( preg_match( "%^([^\s\"']+)(\s+|/?$)%", $attr, $match ) ) {
-					// value
-					$thisval = $match[1];
-					if ( in_array( strtolower( $attrname ), $uris ) ) {
-						$thisval = wp_kses_bad_protocol( $thisval, $allowed_protocols );
-					}
-
-					if ( false === array_key_exists( $attrname, $attrarr ) ) {
-						$attrarr[ $attrname ] = array(
-							'name'  => $attrname,
-							'value' => $thisval,
-							'whole' => "$attrname=\"$thisval\"",
-							'vless' => 'n',
-						);
-					}
-					// We add quotes to conform to W3C's HTML spec.
-					$working = 1;
-					$mode    = 0;
-					$attr    = preg_replace( "%^[^\s\"']+(\s+|$)%", '', $attr );
-				}
-
-				break;
-		} // switch
-
-		if ( $working == 0 ) { // not well formed, remove and try again
-			$attr = wp_kses_html_error( $attr );
-			$mode = 0;
-		}
-	} // while
-
-	if ( $mode == 1 && false === array_key_exists( $attrname, $attrarr ) ) {
-		// special case, for when the attribute list ends with a valueless
-		// attribute like "selected"
-		$attrarr[ $attrname ] = array(
-			'name'  => $attrname,
-			'value' => '',
-			'whole' => $attrname,
-			'vless' => 'y',
-		);
-	}
-
-	return $attrarr;
-}
-
-/**
- * Finds all attributes of an HTML element.
- *
- * Does not modify input.  May return "evil" output.
- *
- * Based on `wp_kses_split2()` and `wp_kses_attr()`.
- *
- * @since 4.2.3
- *
- * @param string $element HTML element.
- * @return array|bool List of attributes found in the element. Returns false on failure.
- */
-function wp_kses_attr_parse( $element ) {
-	$valid = preg_match( '%^(<\s*)(/\s*)?([a-zA-Z0-9]+\s*)([^>]*)(>?)$%', $element, $matches );
-	if ( 1 !== $valid ) {
-		return false;
-	}
-
-	$begin  = $matches[1];
-	$slash  = $matches[2];
-	$elname = $matches[3];
-	$attr   = $matches[4];
-	$end    = $matches[5];
-
-	if ( '' !== $slash ) {
-		// Closing elements do not get parsed.
-		return false;
-	}
-
-	// Is there a closing XHTML slash at the end of the attributes?
-	if ( 1 === preg_match( '%\s*/\s*$%', $attr, $matches ) ) {
-		$xhtml_slash = $matches[0];
-		$attr        = substr( $attr, 0, -strlen( $xhtml_slash ) );
-	} else {
-		$xhtml_slash = '';
-	}
-
-	// Split it
-	$attrarr = wp_kses_hair_parse( $attr );
-	if ( false === $attrarr ) {
-		return false;
-	}
-
-	// Make sure all input is returned by adding front and back matter.
-	array_unshift( $attrarr, $begin . $slash . $elname );
-	array_push( $attrarr, $xhtml_slash . $end );
-
-	return $attrarr;
-}
-
-/**
- * Builds an attribute list from string containing attributes.
- *
- * Does not modify input.  May return "evil" output.
- * In case of unexpected input, returns false instead of stripping things.
- *
- * Based on `wp_kses_hair()` but does not return a multi-dimensional array.
- *
- * @since 4.2.3
- *
- * @param string $attr Attribute list from HTML element to closing HTML element tag.
- * @return array|bool List of attributes found in $attr. Returns false on failure.
- */
-function wp_kses_hair_parse( $attr ) {
-	if ( '' === $attr ) {
-		return array();
-	}
-
-	// phpcs:disable Squiz.Strings.ConcatenationSpacing.PaddingFound -- don't remove regex indentation
-	$regex =
-	'(?:'
-	.     '[-a-zA-Z:]+'   // Attribute name.
-	. '|'
-	.     '\[\[?[^\[\]]+\]\]?' // Shortcode in the name position implies unfiltered_html.
-	. ')'
-	. '(?:'               // Attribute value.
-	.     '\s*=\s*'       // All values begin with '='
-	.     '(?:'
-	.         '"[^"]*"'   // Double-quoted
-	.     '|'
-	.         "'[^']*'"   // Single-quoted
-	.     '|'
-	.         '[^\s"\']+' // Non-quoted
-	.         '(?:\s|$)'  // Must have a space
-	.     ')'
-	. '|'
-	.     '(?:\s|$)'      // If attribute has no value, space is required.
-	. ')'
-	. '\s*';              // Trailing space is optional except as mentioned above.
-	// phpcs:enable
-
-	// Although it is possible to reduce this procedure to a single regexp,
-	// we must run that regexp twice to get exactly the expected result.
-
-	$validation = "%^($regex)+$%";
-	$extraction = "%$regex%";
-
-	if ( 1 === preg_match( $validation, $attr ) ) {
-		preg_match_all( $extraction, $attr, $attrarr );
-		return $attrarr[0];
-	} else {
-		return false;
-	}
-}
-
-/**
- * Performs different checks for attribute values.
- *
- * The currently implemented checks are "maxlen", "minlen", "maxval", "minval",
- * and "valueless".
- *
- * @since 1.0.0
- *
- * @param string $value      Attribute value.
- * @param string $vless      Whether the attribute is valueless. Use 'y' or 'n'.
- * @param string $checkname  What $checkvalue is checking for.
- * @param mixed  $checkvalue What constraint the value should pass.
- * @return bool Whether check passes.
- */
-function wp_kses_check_attr_val( $value, $vless, $checkname, $checkvalue ) {
-	$ok = true;
-
-	switch ( strtolower( $checkname ) ) {
-		case 'maxlen':
-			// The maxlen check makes sure that the attribute value has a length not
-			// greater than the given value. This can be used to avoid Buffer Overflows
-			// in WWW clients and various Internet servers.
-
-			if ( strlen( $value ) > $checkvalue ) {
-				$ok = false;
-			}
-			break;
-
-		case 'minlen':
-			// The minlen check makes sure that the attribute value has a length not
-			// smaller than the given value.
-
-			if ( strlen( $value ) < $checkvalue ) {
-				$ok = false;
-			}
-			break;
-
-		case 'maxval':
-			// The maxval check does two things: it checks that the attribute value is
-			// an integer from 0 and up, without an excessive amount of zeroes or
-			// whitespace (to avoid Buffer Overflows). It also checks that the attribute
-			// value is not greater than the given value.
-			// This check can be used to avoid Denial of Service attacks.
-
-			if ( ! preg_match( '/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value ) ) {
-				$ok = false;
-			}
-			if ( $value > $checkvalue ) {
-				$ok = false;
-			}
-			break;
-
-		case 'minval':
-			// The minval check makes sure that the attribute value is a positive integer,
-			// and that it is not smaller than the given value.
-
-			if ( ! preg_match( '/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value ) ) {
-				$ok = false;
-			}
-			if ( $value < $checkvalue ) {
-				$ok = false;
-			}
-			break;
-
-		case 'valueless':
-			// The valueless check makes sure if the attribute has a value
-			// (like `<a href="blah">`) or not (`<option selected>`). If the given value
-			// is a "y" or a "Y", the attribute must not have a value.
-			// If the given value is an "n" or an "N", the attribute must have a value.
-
-			if ( strtolower( $checkvalue ) != $vless ) {
-				$ok = false;
-			}
-			break;
-	} // switch
-
-	return $ok;
-}
-
-/**
- * Sanitizes a string and removed disallowed URL protocols.
- *
- * This function removes all non-allowed protocols from the beginning of the
- * string. It ignores whitespace and the case of the letters, and it does
- * understand HTML entities. It does its work recursively, so it won't be
- * fooled by a string like `javascript:javascript:alert(57)`.
- *
- * @since 1.0.0
- *
- * @param string   $string            Content to filter bad protocols from.
- * @param string[] $allowed_protocols Array of allowed URL protocols.
- * @return string Filtered content.
- */
-function wp_kses_bad_protocol( $string, $allowed_protocols ) {
-	$string     = wp_kses_no_null( $string );
-	$iterations = 0;
-
-	do {
-		$original_string = $string;
-		$string          = wp_kses_bad_protocol_once( $string, $allowed_protocols );
-	} while ( $original_string != $string && ++$iterations < 6 );
-
-	if ( $original_string != $string ) {
-		return '';
-	}
-
-	return $string;
-}
-
-/**
- * Removes any invalid control characters in a text string.
- *
- * Also removes any instance of the `\0` string.
- *
- * @since 1.0.0
- *
- * @param string $string  Content to filter null characters from.
- * @param array  $options Set 'slash_zero' => 'keep' when '\0' is allowed. Default is 'remove'.
- * @return string Filtered content.
- */
-function wp_kses_no_null( $string, $options = null ) {
-	if ( ! isset( $options['slash_zero'] ) ) {
-		$options = array( 'slash_zero' => 'remove' );
-	}
-
-	$string = preg_replace( '/[\x00-\x08\x0B\x0C\x0E-\x1F]/', '', $string );
-	if ( 'remove' == $options['slash_zero'] ) {
-		$string = preg_replace( '/\\\\+0+/', '', $string );
-	}
-
-	return $string;
-}
-
-/**
- * Strips slashes from in front of quotes.
- *
- * This function changes the character sequence `\"` to just `"`. It leaves all other
- * slashes alone. The quoting from `preg_replace(//e)` requires this.
- *
- * @since 1.0.0
- *
- * @param string $string String to strip slashes from.
- * @return string Fixed string with quoted slashes.
- */
-function wp_kses_stripslashes( $string ) {
-	return preg_replace( '%\\\\"%', '"', $string );
-}
-
-/**
- * Converts the keys of an array to lowercase.
- *
- * @since 1.0.0
- *
- * @param array $inarray Unfiltered array.
- * @return array Fixed array with all lowercase keys.
- */
-function wp_kses_array_lc( $inarray ) {
-	$outarray = array();
-
-	foreach ( (array) $inarray as $inkey => $inval ) {
-		$outkey              = strtolower( $inkey );
-		$outarray[ $outkey ] = array();
-
-		foreach ( (array) $inval as $inkey2 => $inval2 ) {
-			$outkey2                         = strtolower( $inkey2 );
-			$outarray[ $outkey ][ $outkey2 ] = $inval2;
-		}
-	}
-
-	return $outarray;
-}
-
-/**
- * Handles parsing errors in `wp_kses_hair()`.
- *
- * The general plan is to remove everything to and including some whitespace,
- * but it deals with quotes and apostrophes as well.
- *
- * @since 1.0.0
- *
- * @param string $string
- * @return string
- */
-function wp_kses_html_error( $string ) {
-	return preg_replace( '/^("[^"]*("|$)|\'[^\']*(\'|$)|\S)*\s*/', '', $string );
-}
-
-/**
- * Sanitizes content from bad protocols and other characters.
- *
- * This function searches for URL protocols at the beginning of the string, while
- * handling whitespace and HTML entities.
- *
- * @since 1.0.0
- *
- * @param string   $string            Content to check for bad protocols.
- * @param string[] $allowed_protocols Array of allowed URL protocols.
- * @return string Sanitized content.
- */
-function wp_kses_bad_protocol_once( $string, $allowed_protocols, $count = 1 ) {
-	$string  = preg_replace( '/(&#0*58(?![;0-9])|&#x0*3a(?![;a-f0-9]))/i', '$1;', $string );
-	$string2 = preg_split( '/:|&#0*58;|&#x0*3a;|&colon;/i', $string, 2 );
-	if ( isset( $string2[1] ) && ! preg_match( '%/\?%', $string2[0] ) ) {
-		$string   = trim( $string2[1] );
-		$protocol = wp_kses_bad_protocol_once2( $string2[0], $allowed_protocols );
-		if ( 'feed:' == $protocol ) {
-			if ( $count > 2 ) {
-				return '';
-			}
-			$string = wp_kses_bad_protocol_once( $string, $allowed_protocols, ++$count );
-			if ( empty( $string ) ) {
-				return $string;
-			}
-		}
-		$string = $protocol . $string;
-	}
-
-	return $string;
-}
-
-/**
- * Callback for `wp_kses_bad_protocol_once()` regular expression.
- *
- * This function processes URL protocols, checks to see if they're in the
- * whitelist or not, and returns different data depending on the answer.
- *
- * @access private
- * @ignore
- * @since 1.0.0
- *
- * @param string   $string            URI scheme to check against the whitelist.
- * @param string[] $allowed_protocols Array of allowed URL protocols.
- * @return string Sanitized content.
- */
-function wp_kses_bad_protocol_once2( $string, $allowed_protocols ) {
-	$string2 = wp_kses_decode_entities( $string );
-	$string2 = preg_replace( '/\s/', '', $string2 );
-	$string2 = wp_kses_no_null( $string2 );
-	$string2 = strtolower( $string2 );
-
-	$allowed = false;
-	foreach ( (array) $allowed_protocols as $one_protocol ) {
-		if ( strtolower( $one_protocol ) == $string2 ) {
-			$allowed = true;
-			break;
-		}
-	}
-
-	if ( $allowed ) {
-		return "$string2:";
-	} else {
-		return '';
-	}
-}
-
-/**
- * Converts and fixes HTML entities.
- *
- * This function normalizes HTML entities. It will convert `AT&T` to the correct
- * `AT&amp;T`, `&#00058;` to `&#58;`, `&#XYZZY;` to `&amp;#XYZZY;` and so on.
- *
- * @since 1.0.0
- *
- * @param string $string Content to normalize entities.
- * @return string Content with normalized entities.
- */
-function wp_kses_normalize_entities( $string ) {
-	// Disarm all entities by converting & to &amp;
-	$string = str_replace( '&', '&amp;', $string );
-
-	// Change back the allowed entities in our entity whitelist
-	$string = preg_replace_callback( '/&amp;([A-Za-z]{2,8}[0-9]{0,2});/', 'wp_kses_named_entities', $string );
-	$string = preg_replace_callback( '/&amp;#(0*[0-9]{1,7});/', 'wp_kses_normalize_entities2', $string );
-	$string = preg_replace_callback( '/&amp;#[Xx](0*[0-9A-Fa-f]{1,6});/', 'wp_kses_normalize_entities3', $string );
-
-	return $string;
-}
-
-/**
- * Callback for `wp_kses_normalize_entities()` regular expression.
- *
- * This function only accepts valid named entity references, which are finite,
- * case-sensitive, and highly scrutinized by HTML and XML validators.
- *
- * @since 3.0.0
- *
- * @global array $allowedentitynames
- *
- * @param array $matches preg_replace_callback() matches array.
- * @return string Correctly encoded entity.
- */
-function wp_kses_named_entities( $matches ) {
-	global $allowedentitynames;
-
-	if ( empty( $matches[1] ) ) {
-		return '';
-	}
-
-	$i = $matches[1];
-	return ( ! in_array( $i, $allowedentitynames ) ) ? "&amp;$i;" : "&$i;";
-}
-
-/**
- * Callback for `wp_kses_normalize_entities()` regular expression.
- *
- * This function helps `wp_kses_normalize_entities()` to only accept 16-bit
- * values and nothing more for `&#number;` entities.
- *
- * @access private
- * @ignore
- * @since 1.0.0
- *
- * @param array $matches `preg_replace_callback()` matches array.
- * @return string Correctly encoded entity.
- */
-function wp_kses_normalize_entities2( $matches ) {
-	if ( empty( $matches[1] ) ) {
-		return '';
-	}
-
-	$i = $matches[1];
-	if ( valid_unicode( $i ) ) {
-		$i = str_pad( ltrim( $i, '0' ), 3, '0', STR_PAD_LEFT );
-		$i = "&#$i;";
-	} else {
-		$i = "&amp;#$i;";
-	}
-
-	return $i;
-}
-
-/**
- * Callback for `wp_kses_normalize_entities()` for regular expression.
- *
- * This function helps `wp_kses_normalize_entities()` to only accept valid Unicode
- * numeric entities in hex form.
- *
- * @since 2.7.0
- * @access private
- * @ignore
- *
- * @param array $matches `preg_replace_callback()` matches array.
- * @return string Correctly encoded entity.
- */
-function wp_kses_normalize_entities3( $matches ) {
-	if ( empty( $matches[1] ) ) {
-		return '';
-	}
-
-	$hexchars = $matches[1];
-	return ( ! valid_unicode( hexdec( $hexchars ) ) ) ? "&amp;#x$hexchars;" : '&#x' . ltrim( $hexchars, '0' ) . ';';
-}
-
-/**
- * Determines if a Unicode codepoint is valid.
- *
- * @since 2.7.0
- *
- * @param int $i Unicode codepoint.
- * @return bool Whether or not the codepoint is a valid Unicode codepoint.
- */
-function valid_unicode( $i ) {
-	return ( $i == 0x9 || $i == 0xa || $i == 0xd ||
-			( $i >= 0x20 && $i <= 0xd7ff ) ||
-			( $i >= 0xe000 && $i <= 0xfffd ) ||
-			( $i >= 0x10000 && $i <= 0x10ffff ) );
-}
-
-/**
- * Converts all numeric HTML entities to their named counterparts.
- *
- * This function decodes numeric HTML entities (`&#65;` and `&#x41;`).
- * It doesn't do anything with named entities like `&auml;`, but we don't
- * need them in the URL protocol whitelisting system anyway.
- *
- * @since 1.0.0
- *
- * @param string $string Content to change entities.
- * @return string Content after decoded entities.
- */
-function wp_kses_decode_entities( $string ) {
-	$string = preg_replace_callback( '/&#([0-9]+);/', '_wp_kses_decode_entities_chr', $string );
-	$string = preg_replace_callback( '/&#[Xx]([0-9A-Fa-f]+);/', '_wp_kses_decode_entities_chr_hexdec', $string );
-
-	return $string;
-}
-
-/**
- * Regex callback for `wp_kses_decode_entities()`.
- *
- * @since 2.9.0
- * @access private
- * @ignore
- *
- * @param array $match preg match
- * @return string
- */
-function _wp_kses_decode_entities_chr( $match ) {
-	return chr( $match[1] );
-}
-
-/**
- * Regex callback for `wp_kses_decode_entities()`.
- *
- * @since 2.9.0
- * @access private
- * @ignore
- *
- * @param array $match preg match
- * @return string
- */
-function _wp_kses_decode_entities_chr_hexdec( $match ) {
-	return chr( hexdec( $match[1] ) );
-}
-
-/**
- * Sanitize content with allowed HTML KSES rules.
- *
- * This function expects slashed data.
- *
- * @since 1.0.0
- *
- * @param string $data Content to filter, expected to be escaped with slashes.
- * @return string Filtered content.
- */
-function wp_filter_kses( $data ) {
-	return addslashes( wp_kses( stripslashes( $data ), current_filter() ) );
-}
-
-/**
- * Sanitize content with allowed HTML KSES rules.
- *
- * This function expects unslashed data.
- *
- * @since 2.9.0
- *
- * @param string $data Content to filter, expected to not be escaped.
- * @return string Filtered content.
- */
-function wp_kses_data( $data ) {
-	return wp_kses( $data, current_filter() );
-}
-
-/**
- * Sanitizes content for allowed HTML tags for post content.
- *
- * Post content refers to the page contents of the 'post' type and not `$_POST`
- * data from forms.
- *
- * This function expects slashed data.
- *
- * @since 2.0.0
- *
- * @param string $data Post content to filter, expected to be escaped with slashes.
- * @return string Filtered post content with allowed HTML tags and attributes intact.
- */
-function wp_filter_post_kses( $data ) {
-	return addslashes( wp_kses( stripslashes( $data ), 'post' ) );
-}
-
-/**
- * Sanitizes content for allowed HTML tags for post content.
- *
- * Post content refers to the page contents of the 'post' type and not `$_POST`
- * data from forms.
- *
- * This function expects unslashed data.
- *
- * @since 2.9.0
- *
- * @param string $data Post content to filter.
- * @return string Filtered post content with allowed HTML tags and attributes intact.
- */
-function wp_kses_post( $data ) {
-	return wp_kses( $data, 'post' );
-}
-
-/**
- * Navigates through an array, object, or scalar, and sanitizes content for
- * allowed HTML tags for post content.
- *
- * @since 4.4.2
- *
- * @see map_deep()
- *
- * @param mixed $data The array, object, or scalar value to inspect.
- * @return mixed The filtered content.
- */
-function wp_kses_post_deep( $data ) {
-	return map_deep( $data, 'wp_kses_post' );
-}
-
-/**
- * Strips all HTML from a text string.
- *
- * This function expects slashed data.
- *
- * @since 2.1.0
- *
- * @param string $data Content to strip all HTML from.
- * @return string Filtered content without any HTML.
- */
-function wp_filter_nohtml_kses( $data ) {
-	return addslashes( wp_kses( stripslashes( $data ), 'strip' ) );
-}
-
-/**
- * Adds all KSES input form content filters.
- *
- * All hooks have default priority. The `wp_filter_kses()` function is added to
- * the 'pre_comment_content' and 'title_save_pre' hooks.
- *
- * The `wp_filter_post_kses()` function is added to the 'content_save_pre',
- * 'excerpt_save_pre', and 'content_filtered_save_pre' hooks.
- *
- * @since 2.0.0
- */
-function kses_init_filters() {
-	// Normal filtering
-	add_filter( 'title_save_pre', 'wp_filter_kses' );
-
-	// Comment filtering
-	if ( current_user_can( 'unfiltered_html' ) ) {
-		add_filter( 'pre_comment_content', 'wp_filter_post_kses' );
-	} else {
-		add_filter( 'pre_comment_content', 'wp_filter_kses' );
-	}
-
-	// Post filtering
-	add_filter( 'content_save_pre', 'wp_filter_post_kses' );
-	add_filter( 'excerpt_save_pre', 'wp_filter_post_kses' );
-	add_filter( 'content_filtered_save_pre', 'wp_filter_post_kses' );
-}
-
-/**
- * Removes all KSES input form content filters.
- *
- * A quick procedural method to removing all of the filters that KSES uses for
- * content in WordPress Loop.
- *
- * Does not remove the `kses_init()` function from {@see 'init'} hook (priority is
- * default). Also does not remove `kses_init()` function from {@see 'set_current_user'}
- * hook (priority is also default).
- *
- * @since 2.0.6
- */
-function kses_remove_filters() {
-	// Normal filtering
-	remove_filter( 'title_save_pre', 'wp_filter_kses' );
-
-	// Comment filtering
-	remove_filter( 'pre_comment_content', 'wp_filter_post_kses' );
-	remove_filter( 'pre_comment_content', 'wp_filter_kses' );
-
-	// Post filtering
-	remove_filter( 'content_save_pre', 'wp_filter_post_kses' );
-	remove_filter( 'excerpt_save_pre', 'wp_filter_post_kses' );
-	remove_filter( 'content_filtered_save_pre', 'wp_filter_post_kses' );
-}
-
-/**
- * Sets up most of the KSES filters for input form content.
- *
- * First removes all of the KSES filters in case the current user does not need
- * to have KSES filter the content. If the user does not have `unfiltered_html`
- * capability, then KSES filters are added.
- *
- * @since 2.0.0
- */
-function kses_init() {
-	kses_remove_filters();
-
-	if ( ! current_user_can( 'unfiltered_html' ) ) {
-		kses_init_filters();
-	}
-}
-
-/**
- * Filters an inline style attribute and removes disallowed rules.
- *
- * @since 2.8.1
- *
- * @param string $css        A string of CSS rules.
- * @param string $deprecated Not used.
- * @return string Filtered string of CSS rules.
- */
-function safecss_filter_attr( $css, $deprecated = '' ) {
-	if ( ! empty( $deprecated ) ) {
-		_deprecated_argument( __FUNCTION__, '2.8.1' ); // Never implemented
-	}
-
-	$css = wp_kses_no_null( $css );
-	$css = str_replace( array( "\n", "\r", "\t" ), '', $css );
-
-	$allowed_protocols = wp_allowed_protocols();
-
-	$css_array = explode( ';', trim( $css ) );
-
-	/**
-	 * Filters list of allowed CSS attributes.
-	 *
-	 * @since 2.8.1
-	 * @since 4.4.0 Added support for `min-height`, `max-height`, `min-width`, and `max-width`.
-	 * @since 4.6.0 Added support for `list-style-type`.
-	 * @since 5.0.0 Added support for `background-image`.
-	 * @since 5.1.0 Added support for `text-transform`.
-	 * @since 5.2.0 Added support for `background-position` and `grid-template-columns`
-	 * @since 5.3.0 Added support for `grid`, `flex` and `column` layout properties.
-	 *              Extend `background-*` support of individual properties.
-	 * @since 5.3.1 Added support for gradient backgrounds.
-	 *
-	 * @param string[] $attr Array of allowed CSS attributes.
-	 */
-	$allowed_attr = apply_filters(
-		'safe_style_css',
-		array(
-			'background',
-			'background-color',
-			'background-image',
-			'background-position',
-			'background-size',
-			'background-attachment',
-			'background-blend-mode',
-
-			'border',
-			'border-radius',
-			'border-width',
-			'border-color',
-			'border-style',
-			'border-right',
-			'border-right-color',
-			'border-right-style',
-			'border-right-width',
-			'border-bottom',
-			'border-bottom-color',
-			'border-bottom-style',
-			'border-bottom-width',
-			'border-left',
-			'border-left-color',
-			'border-left-style',
-			'border-left-width',
-			'border-top',
-			'border-top-color',
-			'border-top-style',
-			'border-top-width',
-
-			'border-spacing',
-			'border-collapse',
-			'caption-side',
-
-			'columns',
-			'column-count',
-			'column-fill',
-			'column-gap',
-			'column-rule',
-			'column-span',
-			'column-width',
-
-			'color',
-			'font',
-			'font-family',
-			'font-size',
-			'font-style',
-			'font-variant',
-			'font-weight',
-			'letter-spacing',
-			'line-height',
-			'text-align',
-			'text-decoration',
-			'text-indent',
-			'text-transform',
-
-			'height',
-			'min-height',
-			'max-height',
-
-			'width',
-			'min-width',
-			'max-width',
-
-			'margin',
-			'margin-right',
-			'margin-bottom',
-			'margin-left',
-			'margin-top',
-
-			'padding',
-			'padding-right',
-			'padding-bottom',
-			'padding-left',
-			'padding-top',
-
-			'flex',
-			'flex-basis',
-			'flex-direction',
-			'flex-flow',
-			'flex-grow',
-			'flex-shrink',
-
-			'grid-template-columns',
-			'grid-auto-columns',
-			'grid-column-start',
-			'grid-column-end',
-			'grid-column-gap',
-			'grid-template-rows',
-			'grid-auto-rows',
-			'grid-row-start',
-			'grid-row-end',
-			'grid-row-gap',
-			'grid-gap',
-
-			'justify-content',
-			'justify-items',
-			'justify-self',
-			'align-content',
-			'align-items',
-			'align-self',
-
-			'clear',
-			'cursor',
-			'direction',
-			'float',
-			'overflow',
-			'vertical-align',
-			'list-style-type',
-		)
-	);
-
-	/*
-	 * CSS attributes that accept URL data types.
-	 *
-	 * This is in accordance to the CSS spec and unrelated to
-	 * the sub-set of supported attributes above.
-	 *
-	 * See: https://developer.mozilla.org/en-US/docs/Web/CSS/url
-	 */
-	$css_url_data_types = array(
-		'background',
-		'background-image',
-
-		'cursor',
-
-		'list-style',
-		'list-style-image',
-	);
-
-	/*
-	 * CSS attributes that accept gradient data types.
-	 *
-	 */
-	$css_gradient_data_types = array(
-		'background',
-		'background-image',
-	);
-
-	if ( empty( $allowed_attr ) ) {
-		return $css;
-	}
-
-	$css = '';
-	foreach ( $css_array as $css_item ) {
-		if ( $css_item == '' ) {
-			continue;
-		}
-
-		$css_item        = trim( $css_item );
-		$css_test_string = $css_item;
-		$found           = false;
-		$url_attr        = false;
-		$gradient_attr   = false;
-
-		if ( strpos( $css_item, ':' ) === false ) {
-			$found = true;
-		} else {
-			$parts        = explode( ':', $css_item, 2 );
-			$css_selector = trim( $parts[0] );
-
-			if ( in_array( $css_selector, $allowed_attr, true ) ) {
-				$found         = true;
-				$url_attr      = in_array( $css_selector, $css_url_data_types, true );
-				$gradient_attr = in_array( $css_selector, $css_gradient_data_types, true );
-			}
-		}
-
-		if ( $found && $url_attr ) {
-			// Simplified: matches the sequence `url(*)`.
-			preg_match_all( '/url\([^)]+\)/', $parts[1], $url_matches );
-
-			foreach ( $url_matches[0] as $url_match ) {
-				// Clean up the URL from each of the matches above.
-				preg_match( '/^url\(\s*([\'\"]?)(.*)(\g1)\s*\)$/', $url_match, $url_pieces );
-
-				if ( empty( $url_pieces[2] ) ) {
-					$found = false;
-					break;
-				}
-
-				$url = trim( $url_pieces[2] );
-
-				if ( empty( $url ) || $url !== wp_kses_bad_protocol( $url, $allowed_protocols ) ) {
-					$found = false;
-					break;
-				} else {
-					// Remove the whole `url(*)` bit that was matched above from the CSS.
-					$css_test_string = str_replace( $url_match, '', $css_test_string );
-				}
-			}
-		}
-
-		if ( $found && $gradient_attr ) {
-			$css_value = trim( $parts[1] );
-			if ( preg_match( '/^(repeating-)?(linear|radial|conic)-gradient\(([^()]|rgb[a]?\([^()]*\))*\)$/', $css_value ) ) {
-				// Remove the whole `gradient` bit that was matched above from the CSS.
-				$css_test_string = str_replace( $css_value, '', $css_test_string );
-			}
-		}
-
-		// Remove any CSS containing containing \ ( & } = or comments, except for url() useage checked above.
-		if ( $found && ! preg_match( '%[\\\(&=}]|/\*%', $css_test_string ) ) {
-			if ( $css != '' ) {
-				$css .= ';';
-			}
-
-			$css .= $css_item;
-		}
-	}
-
-	return $css;
-}
-
-/**
- * Helper function to add global attributes to a tag in the allowed html list.
- *
- * @since 3.5.0
- * @since 5.0.0 Add support for `data-*` wildcard attributes.
- * @access private
- * @ignore
- *
- * @param array $value An array of attributes.
- * @return array The array of attributes with global attributes added.
- */
-function _wp_add_global_attributes( $value ) {
-	$global_attributes = array(
-		'aria-describedby' => true,
-		'aria-details'     => true,
-		'aria-label'       => true,
-		'aria-labelledby'  => true,
-		'aria-hidden'      => true,
-		'class'            => true,
-		'id'               => true,
-		'style'            => true,
-		'title'            => true,
-		'role'             => true,
-		'data-*'           => true,
-	);
-
-	if ( true === $value ) {
-		$value = array();
-	}
-
-	if ( is_array( $value ) ) {
-		return array_merge( $value, $global_attributes );
-	}
-
-	return $value;
-}
-- 
cgit