Ticket #41501: 41501.2.diff

src/wp-includes/formatting.php

@@ -5148 +5148 @@
  * @return string The encoded content.
  */
 function wp_staticize_emoji( $text ) {
+        if ( ( ( function_exists( 'mb_check_encoding' ) && mb_check_encoding( $text, 'ASCII' ) )
+                        || ! preg_match( '/[^\x00-\x7F]/', $text ) )
+                && false === strpos( '&#x', $text ) ) {
+                // The text doesn't contain anything that might be emoji, so we can return early.
+                return $text;
+        }
+
         $text = wp_encode_emoji( $text );
 
         $output = '';