Move BIG5 at the end of charsets list in detect()

program/include/rcube_charset.php

@@ -671,12 +671,12 @@ class rcube_charset
             // FIXME: the order is important, because sometimes
             // iso string is detected as euc-jp and etc.
             $enc = array(
-                'UTF-8', 'SJIS', 'BIG5', 'GB2312',
+                'UTF-8', 'SJIS', 'GB2312',
                 'ISO-8859-1', 'ISO-8859-2', 'ISO-8859-3', 'ISO-8859-4',
                 'ISO-8859-5', 'ISO-8859-6', 'ISO-8859-7', 'ISO-8859-8', 'ISO-8859-9',
                 'ISO-8859-10', 'ISO-8859-13', 'ISO-8859-14', 'ISO-8859-15', 'ISO-8859-16',
-                'WINDOWS-1252', 'WINDOWS-1251', 'EUC-JP', 'EUC-TW', 'KOI8-R',
-                'ISO-2022-KR', 'ISO-2022-JP'
+                'WINDOWS-1252', 'WINDOWS-1251', 'EUC-JP', 'EUC-TW', 'KOI8-R', 'BIG5',
+                'ISO-2022-KR', 'ISO-2022-JP',
             );
 
             $result = mb_detect_encoding($string, join(',', $enc));