Ticket #22363: 22363.patch

wp-includes/formatting.php

@@ -831 +831 @@
         $filename = str_replace($special_chars, '', $filename);
         $filename = preg_replace('/[\s-]+/', '-', $filename);
         $filename = trim($filename, '.-_');
+        $filename = remove_accents($filename);
 
         // Split the filename into a base and extension[s]
         $parts = explode('.', $filename);