Index: src/wp-includes/kses.php
===================================================================
--- src/wp-includes/kses.php	(revision 40556)
+++ src/wp-includes/kses.php	(working copy)
@@ -549,7 +549,7 @@
 	$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);
@@ -561,7 +561,7 @@
 	} 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];
@@ -598,7 +598,7 @@
 		$value = '';
 		$vless = 'y';
 	}
-	
+
 	// Sanitize attribute by name.
 	wp_kses_attr_check( $name, $value, $string, $vless, $element, $allowed_html );
 
@@ -633,7 +633,7 @@
 		 * @param string $context Context to judge allowed tags by. Allowed values are 'post',
 		 *                        'data', 'strip', 'entities', 'explicit', or the name of a filter.
 		 */
-		return apply_filters( 'wp_kses_allowed_html', $context, 'explicit' );
+		return apply_filters( 'wp_kses_allowed_html', $tags, 'explicit' );
 	}
 
 	switch ( $context ) {
@@ -1061,7 +1061,7 @@
 	} else {
 		$xhtml_slash = '';
 	}
-	
+
 	// Split it
 	$attrarr = wp_kses_hair_parse( $attr );
 	if ( false === $attrarr ) {
@@ -1071,7 +1071,7 @@
 	// 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;
 }