189391 - Open Attachment Function only considers MIME type, not file extension

Status: VERIFIED DUPLICATE of bug 67940

(MailNews Core :: Attachments, enhancement)

Description

[Jochen Roemling]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.3a) Gecko/20021212
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.3a) Gecko/20021212

Sometimes I receive Mail attachments that are coded with

Content-Type: application/octet-stream;

Example: 
Powerpoint-Presentation sent through Outlook Express
The file hast the extension ".pps". 
When I tell Mozilla to open the Attachment, it offers to use "ark" as it would
for zip-files, because ark is assigned to the octet-stream MIME type. Because
other attachments come with this MIME type too, I cannot simply assign
octet-stream to the Powerpoint Viewer as a quick workaround. 

I report this case here becaue I think it would be great if I could not only
assign helper applications by MIME types but also by file extension. Wouldn't it
be possible to get this information from the KDE settings? *wild-dreams* Or
maybe, if I would create an assignment application/ms-powerpoint with extension
pps, then I can choose between using the assignment by MIME-Type or by Extension?

Reproducible: Always

Steps to Reproduce:
1. Assign MIME type "application/octet-stream" to any application
2. Receive a mail that has an attachment that is coded
"application/octet-stream" (I guess you can do this using Outlook Express) and
has the extension ".pps"
3. Open the attachment


Actual Results:  
Mozilla lets you choose to open the attachment with the application assigned to
the MIME type or save the file to disk. 

Expected Results:  
Let me choose between opening the attachment with the application assigned to
the MIME type or opening the attachment with the application assigned to the
extension or save the file.

Comment 1

[Gábor Lipták]

I seem to see a similar problem. When I receive an attachment as

Content-Type: application/octet-stream; name="123.pdf"

It is opened as HTML (which is probably the default "octet-stream" handler).

Very inconvenient ...

Comment 2

[Gábor Lipták]

this seem to be addressed in

http://bugzilla.mozilla.org/show_bug.cgi?id=67940

Comment 3

[Alfonso Martinez]

*** This bug has been marked as a duplicate of 67940 ***

Comment 4

[Stephen Donner [:stephend] Not actively reading bugmail]

Verified dup.