And this is needed indeed

diff --git a/run-tests.php b/run-tests.php
index 951bfb82f67274e6c2d646da922834a90d4b9c70..bc7925a64d4f7becc8202868d96d0cdb43bbb07f 100755 (executable)
--- a/run-tests.php
+++ b/run-tests.php
@@ -139,6 +139,7 @@ INI actual  : " . realpath(get_cfg_var("cfg_file_path")) . "
 More .INIs  : " . (function_exists(\'php_ini_scanned_files\') ? str_replace("\n","", php_ini_scanned_files()) : "** not determined **"); ?>';
 save_text($info_file, $php_info);
 $ini_overwrites = array(
+               'mbstring.script_encoding=pass',
                'output_handler=',
                'zlib.output_compression=Off',
                'open_basedir=',