[Bug 293039] New: KMail fails to parse emails properly in some cases

[m.o at online.de]

https://bugs.kde.org/show_bug.cgi?id=293039

           Summary: KMail fails to parse emails properly in some cases
           Product: kmail2
           Version: 4.8
          Platform: Archlinux Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: m.o at online.de


Version:           4.8 (using KDE 4.8.0) 
OS:                Linux

KMail fails to parse emails properly when (this is the way I see it) there are
different message parts in one email, e.g. plaintext and HTML or plaintext and
attachement, i.e.: for a lot of mails.

This is the exact output for a mail where parsing (and encoding) fails:
http://pastebin.com/YnqU1FtW

This is the output for a mail consisting of plaintext and an attachement
(anonymised):
http://pastebin.com/cQ4miUZ5

These badly displayed emails don't always start with "This is a multi-part
message in MIME format.", see the recent Linux Foundation Newsletter:
http://pastebin.com/466LanBS

The same happens when there is a signature:
http://pastebin.com/xzd8PqCj

One more, just the top lines this time:
http://pastebin.com/Jq0JRsgq


I just discovered that it may not perfectly reproducable. I get this newsletter
One Word A Day and it was parsed correctly yesterday, but not today.
Yesterday:
http://pastebin.com/eRVpta85

Today:
http://pastebin.com/TaCqWE7L

Reproducible: Sometimes

Steps to Reproduce:
Receive a multi-part email.

Actual Results:  
See pastebin examples.

Expected Results:  
An email properly parsed, readable, with the right encoding, giving you the
ability to choose between e.g. plaintext and HTML or allowing you to open an
attachement.

This is only happening since 4.8.0.

I'm not sure about the severity of this bug, but since I seem to lose my
attachement (it may not be gone but I cannot open it which I would like to in
the next days or I won't get my salary :) ), I set the severity to major.
Feel free to reduce severity if this is inappropriate.

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