1222876 - Some characters in BIG5 have incorrect conversion to UTF8

Status: RESOLVED WONTFIX

(Core :: Internationalization, defect)

Description

[Wei-Cheng Pan [:wcpan] [:wcp] [:legnaleurc] (left Mozilla)]

var converter = Components.classes["@mozilla.org/intl/utf8converterservice;1"].getService(Components.interfaces.nsIUTF8ConverterService);
var strInBig5 = '\x9d\xde';
var strInUtf8 = converter.convertStringToUTF8(strInBig5, 'big5', true, true);
console.info(strInUtf8.charCodeAt(0));

The character code should be 9829, but after Firefox 43 it becomes 40005.

Comment 1

[Tim Guan-tin Chien [:timdream] (please needinfo)]

Maybe because of bug 912470?

Comment 2

[Tim Guan-tin Chien [:timdream] (please needinfo)]

(In reply to Tim Guan-tin Chien [:timdream] (OOO Nov 16-26; please needinfo) from comment #1)
> Maybe because of bug 912470?

Actually, not a maybe ... it's a "definitely" since the bug did land at Fx43!

Comment 3

[Wei-Cheng Pan [:wcpan] [:wcp] [:legnaleurc] (left Mozilla)]

Confirmed after revert bug 912470, but after an offline talk with timdream, I realized that this bug should be marked as won't fix, since we have decide to drop UAO support.

Comment 4

[Henri Sivonen (:hsivonen) (away from Bugzilla until 2025-12-29)]

I don't disagree with closing this as WONTFIX, but I'm still curious: How did you notice this? Did a site break? If a site broke, how does the site render in IE, Edge, Chrome and Safari?

Comment 5

[Wei-Cheng Pan [:wcpan] [:wcp] [:legnaleurc] (left Mozilla)]

(In reply to Henri Sivonen (:hsivonen) from comment #4)
> I don't disagree with closing this as WONTFIX, but I'm still curious: How
> did you notice this? Did a site break? If a site broke, how does the site
> render in IE, Edge, Chrome and Safari?

The original issue is belong to a Firefox extension[1], that implements a BBS (web forum/chatroom over telnet) client.

I think that should not be our concern because the use is not a general case.

[1]: https://github.com/ettoolong/BBSFox-E10S