libmime normalizeCharset RTF charset code replace

[chenxiaoba]

Hello,

libmime normalizeCharset would normalize 136 to iso-8859-136, but actually it's RTF charset big5.
Can libmime normalizeCharset replace 136 to big5 and 134 to gb2312?

Many thanks.

[andris9]

Could you provide samples for testing? Eg a simple email message that uses these encodings for text content?

[chenxiaoba]

For example,

if string charset is 136, it would display as wrong string. Because 136 is replaced to iso-8859-136.

libmime.decodeWords("Subject: =?136?Q?=B4=FA=B8=D5?=")
// output: "Subject: ����"

But if it charset is big5, it can display correctly.

libmime.decodeWords("Subject: =?big5?Q?=B4=FA=B8=D5?=");
// output: "Subject: 測試"

Because the number 136 mean big5 in RTF. In Wiki there is a list compare between "RTF Character Set" and "Code Page".
https://en.wikipedia.org/wiki/Rich_Text_Format#Character_encoding

Many thanks again.