[Bug 279722] New: Copying Mails from mixedmaildir resource to maildir resource only copies their headers

[Christoph Drexler]

https://bugs.kde.org/show_bug.cgi?id=279722

           Summary: Copying Mails from mixedmaildir resource to maildir
                    resource only copies their headers
           Product: kmail2
           Version: 4.7
          Platform: Archlinux Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: chrdr at gmx.at


Version:           4.7 (using KDE 4.7.0) 
OS:                Linux

I have two akonady resources: a mixedmaildir resource pointing to
~/.kde4/apps/kmail/mail and a maildir resource pointing to
~/.local/share/local-mail (the first one being my backup, the second one my
storage for local mails)

Due to mail loss I recently had copy a lot of mails from the mixedmaildir
resource to the maildir resource.

When I copy a mailfolder by drag and drop within kmail, it seems that the
folder and the mails in the folder are being copied as expected, but when I try
to open one of the mails, only the mail header (From:, To:, Subject: and so on)
will be showed, but no content.

Looking for the mails in the filesystem (in one of the subfoders of
~/.local/share/.local-mail.directory/), I see that actually only the
mailheaders have been copied.

Strangely enough, this only "works" if the mails to be copied are selected
automatically, either by copying a whole folder or by using Ctrl-A. If the
mails are selected manually one-by-one, they are copied as expected.

Even more strangely, when I delete the copied messages and then copy them
again, this time it works as expected (the whole mails including their content
are copied).

This is reproducible on my system, even after restarting the computer: Copying
the mails, the first time only the headers are copied, afterwards the whole
mail is copied.

As this bug potentially causes data loss (when moving the mails instead of
copying), I consider this a severe bug.

Reproducible: Always

Steps to Reproduce:
1. Create a mixedmaildir resource pointing to an existing kmail mail folder.
2. Create a maildir resource pointing to e.g. ~/.local/share/local-mail
3. In Kmail, Automatically select a bunch of mails in the mixedmaildir
resource, either by selecting a folder or by using Ctrl-A
4. Drag-and-drop the mails to the maildir resource, selecting "copy"
5. Select one of the copied mails in the maildir resource

Actual Results:  
Only the mails' headers will be shown.

Expected Results:  
The whole mails should be copied, not only their headers.

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