360842 - Filenames of attachments are badly encoded

Status: RESOLVED DUPLICATE of bug 309566

(Thunderbird :: Message Compose Window, defect)

Description

[Alexander Skwar]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; de-DE; rv:1.8.1) Gecko/20061026 BonEcho/2.0
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; de-DE; rv:1.8.1) Gecko/20061026 BonEcho/2.0

When I attach a file with "special characters" (eg. Umlauts like הצ�) in the filename, Outlook 2003 displays an attachment called "Attachment.dat", instead of the original filename.

Reproducible: Always

Steps to Reproduce:
1. Attach a file which has a Umlaut in the filename, eg. "Fl�ge bzw. Bahnfahrten.xls"

Actual Results:  
In Outlook 2003, an attachment called "Attachment.dat" or "ATT817618.xls" is displayed.

Expected Results:  
An attachment with the real filename should be displayed, ie. "Fl�ge bzw. Bahnfahrten.xls" in the example given.

I suppose this issue is because of the "strange" encoding of the filename (which might be absolutely standard compliant). When I have a look at the "source" of the message sent, I see:

--------------020802050801080105070200
Content-Type: application/vnd.ms-excel;
 name*0*=ISO-8859-15''%46%6C%FC%67%65%20%62%7A%77%2E%20%42%61%68%6E%66%61;
 name*1*=%68%72%74%65%6E%2E%78%6C%73
Content-Transfer-Encoding: base64
Content-Disposition: inline;
 filename*0*=ISO-8859-15''%46%6C%FC%67%65%20%62%7A%77%2E%20%42%61%68%6E%66;
 filename*1*=%61%68%72%74%65%6E%2E%78%6C%73

It seems, that Tb *completely* "hex-encoded" the filename. Again, this might be standards compliant, but it breaks atleast ("my") Outlook 2003.

When I send the same attachment with Gmail, I see the correct filename and in the source::

------=_Part_56975_27570609.1163632747455
Content-Type: application/vnd.ms-excel; 
	name="=?ISO-8859-1?Q?Fl=FCge_bzw._Bahnfahrten.xls?="
Content-Transfer-Encoding: base64
X-Attachment-Id: f_eukct4o6
Content-Disposition: attachment; filename="=?ISO-8859-1?Q?Fl=FCge_bzw._Bahnfahrten.xls?="


Once more: I'm NOT saying that Thunderbird is doing something wrong (I don't know that, to be honest); I'm saying that what Tb is doing is causing problems and that there's "room for improvement".

I'm using a self-built Thunderbird 1.5.0.8 on Gentoo Linux (using the Gentoo ebuild).

Comment 1

[Magnus Melin [:mkmelin]]

A variant of bug 309566 perhaps?

Comment 2

[Alexander Skwar]

(In reply to comment #1)
> A variant of bug 309566 perhaps?
> 

No, not a "variant", a clear dupe ;)

Sorry about spamming.

*** This bug has been marked as a duplicate of 309566 ***