Ensure that get_qualified_attribute_name works with virtual tokens

Author: sirreal

src/wp-includes/html-api/class-wp-html-processor.php

@@ -5306,6 +5306,25 @@ public function get_attribute( $name ) {
 		return parent::get_attribute( $name );
 	}
 
+	/**
+	 * Returns the adjusted attribute name for a given attribute, taking into
+	 * account the current parsing context, whether HTML, SVG, or MathML.
+	 *
+	 * @since 6.8.0 Subclassed for the HTML Processor.
+	 *
+	 * @param string       $attribute_name Which attribute name to adjust.
+	 *
+	 * @return string|null The qualified attribute name or null if not on matched tag.
+	 */
+	public function get_qualified_attribute_name( $attribute_name ): ?string {
+		if ( $this->is_virtual() ) {
+			$namespace = $this->current_element->token->namespace;
+			return self::lookup_qualified_attribute_name( $namespace, $attribute_name );
+		}
+
+		return parent::get_qualified_attribute_name( $attribute_name );
+	}
+
 	/**
 	 * Updates or creates a new attribute on the currently matched tag with the passed value.
 	 *

src/wp-includes/html-api/class-wp-html-tag-processor.php

@@ -2979,22 +2979,37 @@ public function get_qualified_tag_name(): ?string {
 	 *
 	 * @since 6.7.0
 	 *
-	 * @param string      $attribute_name Which attribute to adjust.
-	 * @return string|null
+	 * @param string       $attribute_name Which attribute name to adjust.
+	 *
+	 * @return string|null The qualified attribute name or null if not on matched tag.
 	 */
 	public function get_qualified_attribute_name( $attribute_name ): ?string {
 		if ( self::STATE_MATCHED_TAG !== $this->parser_state ) {
 			return null;
 		}
+		$namespace = $this->get_namespace();
+		return self::lookup_qualified_attribute_name( $namespace, $attribute_name );
+	}
 
-		$namespace  = $namespace_override ?? $this->get_namespace();
+	/**
+	 * Returns the adjusted attribute name for a given attribute, taking into
+	 * account the provided namespace.
+	 *
+	 * @since 6.8.0
+	 *
+	 * @param string  $ns             The namespace to use: 'html', 'svg', or 'math'.
+	 * @param string  $attribute_name Which attribute to adjust.
+	 *
+	 * @return string The qualified attribute name.
+	 */
+	final protected static function lookup_qualified_attribute_name( string $ns, string $attribute_name ): string {
 		$lower_name = strtolower( $attribute_name );
 
-		if ( 'math' === $namespace && 'definitionurl' === $lower_name ) {
+		if ( 'math' === $ns && 'definitionurl' === $lower_name ) {
 			return 'definitionURL';
 		}
 
-		if ( 'svg' === $this->get_namespace() ) {
+		if ( 'svg' === $ns ) {
 			switch ( $lower_name ) {
 				case 'attributename':
 					return 'attributeName';
@@ -3172,7 +3187,7 @@ public function get_qualified_attribute_name( $attribute_name ): ?string {
 			}
 		}
 
-		if ( 'html' !== $namespace ) {
+		if ( 'html' !== $ns ) {
 			switch ( $lower_name ) {
 				case 'xlink:actuate':
 					return 'xlink actuate';