Ticket #22363: 22363.3.diff

src/wp-includes/formatting.php

@@ -2033 +2033 @@
          */
         $special_chars = apply_filters( 'sanitize_file_name_chars', $special_chars, $filename_raw );
         $filename      = str_replace( $special_chars, '', $filename );
+        $filename      = remove_accents( $filename );
         $filename      = str_replace( array( '%20', '+' ), '-', $filename );
         $filename      = preg_replace( '/[\r\n\t -]+/', '-', $filename );
         $filename      = trim( $filename, '.-_' );