483645 - cyrillic letters in topics in message list shown as "??????" on gmail imap server.

Status: RESOLVED DUPLICATE of bug 513472

(Thunderbird :: Mail Window Front End, defect)

Description

[Valentin Nellin]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; ru; rv:1.9.0.7) Gecko/2009021910 Firefox/3.0.7 (.NET CLR 3.5.30729)
Build Identifier: 

So,
Cyrillic letters in topics in message list shown as "??????" 
when using google imap server. same messages on another imap server looks good.

Reproducible: Always

Steps to Reproduce:
1. connect thunderbird with google imap server
2. ask your russian friend to write you a letter with not encoded topic
3.

Comment 1

[Valentin Nellin]

i've made a screenshot of problem
http://www.77mail.ru/bugs/bug.gif

Comment 2

[WADA:World Anti-bad-Duping Agency]

Subject: header is not encoded correctly. If other-than us-ascii is contained in string for Subject:, mailer MUST send with correctly encoded data. Byte code for Cyrillic letters is illegal, then converted to U+FFFD in display at thread pane.
 
Mail headers in header box of message pane is probably displayed with original byte codes using HTML internally(XUL is HTML/XML like one). So I guess that such byte codes are displayed in glyph for Cyrillic letters, by charset=windows-1252 for mail body or auto-detect of charset in HTML rendering.

Comment 3

[WADA:World Anti-bad-Duping Agency]

Bug 468351 fixed problem in quirks for wrong header data(not encoded properly). If IMAP, and if IMAP server converst wrong header data to "???", quirks of Tb can't work. And, Gmail IMAP returns "???" for such wrong header. See bug 513472.

Closing as dup of bug 513472.