164105 - Content type of attached email displayed incorrectly when viewing inline

Status: VERIFIED DUPLICATE of bug 140532

(MailNews Core :: Attachments, defect)

Description

[Thomas Winzig]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.1) Gecko/20020818
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.1) Gecko/20020818

When an email is attached to a message, and view that message in mozilla mail,
it displays the email inline. However, the Content-Type header incorrectly
displays the content-type of the main email you are viewing, instead of the
content type of the attached email. If you view the message source, you will see
the correct content-type. However, if you copy the email from the inline view,
you will end up losing the data that describes the content type of the attached
email.

I will submit two attachments showing the problem.

Reproducible: Always

Steps to Reproduce:
1. Send yourself an email with an attached plaintext email message.
2. View this email in mozilla mail.
3. Notice the content-type of your attached message is shown as a multipart,
even though it was plaintext.
4. View message source to confirm inaccuracy.

Comment 1

[Thomas Winzig]

Attachment: Screenshot of email attachment being shown inline with incorrect Content-Type header.

This screenshot shows the incorrect Content-Type that is being displayed for an
email attachment being shown inline (circled in red). The content type shown is
actually that of the main email message that includes this attachment. 

I have blacked out some areas to protect our network identities.

Comment 2

[Thomas Winzig]

Attachment: The attachment being shown in a separate window, with CORRECT content type header.

This is a screenshot of the email being shown in a separate window, done by
double-clicking on the attachment. You can see the content-type (circled in
red) is correctly shown as text/plain.

I have blacked out some areas to protect our network identities.

Comment 3

[Daniel Wang]

Attachment: test.eml

viewed inline, attachment shows content-type:
  multipart/mixed; boundary="------------020104010909090203040304"

Viewed separately, attachment shows content-type:
  text/plain; charset=us-ascii; format=flowed

Please verify if this is a bug

Comment 4

[Brant Gurganus]

By the definitions on <http://bugzilla.mozilla.org/bug_status.html#severity> and
<http://bugzilla.mozilla.org/enter_bug.cgi?format=guided>, crashing and dataloss
bugs are of critical or possibly higher severity.  Only changing open bugs to
minimize unnecessary spam.  Keywords to trigger this would be crash, topcrash,
topcrash+, zt4newcrash, dataloss.

Comment 5

[Mike Cowperthwaite]

Note that the bug to which this is duped has been fixed.

Also, comment 4 is correct: this bug should not have been given 'critical' 
severity.

*** This bug has been marked as a duplicate of 140532 ***

Comment 6

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

Verified dup.