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Ticket #19998: 19998c.patch

File 19998c.patch, 690 bytes (added by abcd95, 16 months ago)
Alternate approach with changes made in the existing esc_eml() function

diff --git a/src/wp-includes/formatting.php b/src/wp-includes/formatting.php
index 8c77d167a4..86754dc27b 100644

                function esc_textarea( $text ) {
 function esc_xml( $text ) {
         $safe_text = wp_check_invalid_utf8( $text );
+        // Strip invalid XML characters.
+        $is_utf8 = in_array( get_option( 'blog_charset' ), array( 'utf8', 'utf-8', 'UTF8', 'UTF-8' ) );
+        if ( $is_utf8 ) {
+                $safe_text = preg_replace(
+                        '/[^\x{9}\x{A}\x{D}\x{20}-\x{D7FF}\x{E000}-\x{FFFD}\x{10000}-\x{10FFFF}]/u',
+                        '',
+                        $safe_text
+                );
+        }
         $cdata_regex = '\<\!\[CDATA\[.*?\]\]\>';
         $regex       = <<<EOF
+/