[Akonadi] [Bug 329988] New: Pipe Trough filter breaks 'To:' field for messages sent to undisclosed recepients

[Patrick]

https://bugs.kde.org/show_bug.cgi?id=329988

            Bug ID: 329988
           Summary: Pipe Trough filter breaks 'To:' field for messages
                    sent to undisclosed recepients
    Classification: Unclassified
           Product: Akonadi
           Version: 4.12
          Platform: Archlinux Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Mail Filter Agent
          Assignee: kdepim-bugs at kde.org
          Reporter: patrick at noxs.nl

Messages sent by Arch Linux AUR notification system have a 'To:' field which
contains 'undisclosed-recipients: ;'. After filtering this message for spam or
viruses, the field is stripped to 'To' without a colon. This causes Kmail to
misinterpret the next line in the header, in this case the subject.

Reproducible: Always

Steps to Reproduce:
To reproduce the bug, you have to be subscribed to an Arch Linux AUR
notification feed.
1. Disable automatic filtering and add one of the pipe trough filters to the
Apply Filter menu (e.g. clamav).
2. When a message from the Arch Linux AUR notification system arrives, apply a
pipe through filter.
Actual Results:  
Part of the header:
Received: by alderaan.archlinux.org (Postfix, from userid 992) id 4541624047;
Tue, 14 Jan 2014 19:13:53 +0000 (UTC)
To
Subject: AUR Comment for chromium-pepper-flash-stable
Reply-To: nobody at archlinux.org
From: aur-notify at archlinux.org

Expected Results:  
Part of the header:
Received: by alderaan.archlinux.org (Postfix, from userid 992)
    id 4541624047; Tue, 14 Jan 2014 19:13:53 +0000 (UTC)
To: undisclosed-recipients: ;
Subject: AUR Comment for chromium-pepper-flash-stable
Reply-to: nobody at archlinux.org
From: aur-notify at archlinux.org

I haven't been able to reproduce the bug by sending a mail to undisclosed
recipients by myself.

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