423716 - Different From: shown in message window and message list if twice in headers

Status: RESOLVED DUPLICATE of bug 286960

(Thunderbird :: Mail Window Front End, defect)

Description

[Martin Petricek]

User-Agent:       Opera/9.24 (Windows NT 5.2; U; en)
Build Identifier: version 3.0a1pre (2008031802)

I noticed list of mails in folder showed [e-mail] as sender address, while when I clicked on the message, [e-mail] appeared to be sender.

When I tried to investigate issue, I found that when From: is specified twice in headers, first address is shown in mail message window and second in mail list window. While such email is probably not valid, these things sometimes come to my mailbox.

Example of such mail:
... some headers ...
From:   [e-mail]
... some other headers ...
From:   [e-mail]
... some other headers ...

Reproducible: Always

Steps to Reproduce:
1. Create some email which have From: line twice in headers, with different values
2. Look in the folder where the mesage is. Open the message

Actual Results:  
You see different senders in list and in the message detail

Expected Results:  
Tough to say. Display both, separated by comma? Display only first or last? At least it should be consistent. What says RFC at this?

Comment 1

[Magnus Melin [:mkmelin]]

I think there is a bug open for this, it's not specific to the From header iirc.

Comment 2

[Ludovic Hirlimann [:Usul]]

Martin does it look like bug 380808 ?