607952 - UTF8 subject clipping error

Status: RESOLVED INVALID

(Thunderbird :: Folder and Message Lists, defect)

Description

[Adam Brunner]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.2.10) Gecko/20100914 Firefox/3.6.10
Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.2.12) Gecko/20101027 Lightning/1.0b2 Thunderbird/3.1.6

If a subject contains UTF8 characters and the clipping position is a two char long UTF8 character, the whole subject will be displayed in ISO-8859-1 in the mail list and in the message view panel.

Reproducible: Always

Steps to Reproduce:
1. Send yourself a mail with subject header:
Subject: =?utf-8?b?W0hHLXN5bmNdIDM2ZmFiMDc4N2MyMCAtICogS8ODwql0IGxpc3RhIHDDg8Kh?=
 =?utf-8?b?cm9zw4PCrXTDg8Khc2EgbWluZGvDg8KpdCBpcsODLi4u?=

2. Recived mail's subject will be displayed wrong

Actual Results:  
Subject displayed as "[HG-sync] 36fab0787c20 - * Két lista párosítása mindkét irÃ..."

Expected Results:  
Subject displayed as "[HG-sync] 36fab0787c20 - * Két lista párosítása mindkét irá..."

Comment 1

[WADA:World Anti-bad-Duping Agency]

It looks next at mail sender side(i.e. sender's fault):
(1) Original utf-8 binary for Két is interpreted as iso-8859-1 or windows-1252.
    In iso-8859-1 or windows-1252, it's shown as Két.
(2) Két in iso-8859-1(or windows-1252) is converted to utf-8.
(3) The converted utf-8 binary is base64 encoded in Subject: header.

Please note that "Két lista pá" is shown if header is changed to next.
> Subject: =?iso-8859-1?b?W0hHLXN5bmNdIDM2ZmFiMDc4N2MyMCAtICogS8ODwql0IGxpc3RhIHDDg8Kh?=
> Subject: =?windows-1252?b?W0hHLXN5bmNdIDM2ZmFiMDc4N2MyMCAtICogS8ODwql0IGxpc3RhIHDDg8Kh?=

Comment 2

[Thomas D. (:thomas8)]

(In reply to WADA from comment #1)

WADA, is your comment 1 confirmation or rejection of this bug?

Comment 3

[Thomas D. (:thomas8)]

Maybe similar: Bug 610110

Comment 4

[WADA:World Anti-bad-Duping Agency]

(In reply to Thomas D. from comment #2)

"sender's fault == not Tb's fault == not Tb's bug" usually means "rejection" :-)

Comment 5

[Wayne Mery (:wsmwk)]

invalid according to wada