Bug#531427: kmail: stops filtering after executing "pipe through" filter

[Andras Veres-Szentkiralyi <vsza@vsza.hu>]

Package: kmail
Version: 4:4.2.2-1
Severity: normal


I have multiple filters set up in KMail, those that contain no "pipe
trough" actions execute just fine. I have bogofilter set up as one of
the last filters, which only have one rule (match .* in any header) that
matches all incoming email. This worked pretty well until I upgraded to
the KDE4 version in testing.

Now, the filtering process goes well for the "simple" filters, but when
execution hits the bogofilter one, bogofilter gets executed, but the
content of the email is left in its original state and the filtering
stops, although on the Advanced page in the "Filter Rules" window
the "If this filter matches, stop processing here" box is unchecked.

The filter actions are the following:
 - Remove Header X-Bogosity
 - Remove Header X-Attachments
 - Pipe through /usr/bin/bogofilter-sqlite -epv

I tried running bogofilter from console, piping mails to its stdin, and
it works fine. I replaced the bogofilter executable with a simple shell
script that touches a file in /tmp and then executes "cat" so I can see,
whether KMail even executes the file or not, and it did.

So what's happening here is that KMail starts the specified program but
ignores its output and then stops the filtering process, as I confirmed
by looking at the "Filter Log Viewer" window.

-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.29.4 (SMP w/2 CPU cores)
Locale: LANG=hu_HU.UTF-8, LC_CTYPE=hu_HU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages kmail depends on:
ii  kdebase-runtime               4:4.2.2-1  runtime components from the offici
ii  kdelibs5                      4:4.2.2-2  core libraries for all KDE 4 appli
ii  kdepimlibs5                   4:4.2.2-1  core libraries for KDE PIM 4 appli
ii  libc6                         2.9-12     GNU C Library: Shared libraries
ii  libgcc1                       1:4.4.0-5  GCC support library
ii  libkdepim4                    4:4.2.2-1  KDE PIM library
ii  libkleo4                      4:4.2.2-1  certificate based crypto library f
ii  libkontactinterfaces4         4:4.2.2-1  KDE Kontact interface library
ii  libkpgp4                      4:4.2.2-1  gpg based crypto library for KDE
ii  libksieve4                    4:4.2.2-1  KDE mail/news message filtering li
ii  libmimelib4                   4:4.2.2-1  KDE mime library
ii  libphonon4                    4:4.3.1-1  Phonon multimedia framework for Qt
ii  libqt4-dbus                   4.5.1-2    Qt 4 D-Bus module
ii  libqt4-network                4.5.1-2    Qt 4 network module
ii  libqt4-qt3support             4.5.1-2    Qt 3 compatibility library for Qt 
ii  libqt4-xml                    4.5.1-2    Qt 4 XML module
ii  libqtcore4                    4.5.1-2    Qt 4 core module
ii  libqtgui4                     4.5.1-2    Qt 4 GUI module
ii  libstdc++6                    4.4.0-5    The GNU Standard C++ Library v3
ii  perl                          5.10.0-22  Larry Wall's Practical Extraction 
ii  phonon                        4:4.3.1-1  metapackage for Phonon multimedia 

Versions of packages kmail recommends:
pn  procmail                      <none>     (no description available)

Versions of packages kmail suggests:
ii  clamav                     0.95.1+dfsg-2 anti-virus utility for Unix - comm
ii  gnupg                      1.4.9-4       GNU privacy guard - a free PGP rep
ii  gnupg-agent                2.0.11-1      GNU privacy guard - password agent
ii  kaddressbook               4:4.2.2-1     KDE address book
ii  kleopatra                  4:4.2.2-1     KDE Certificate Manager
ii  pinentry-qt [pinentry-x11] 0.7.5-3       Qt-based PIN or pass-phrase entry 
pn  spamassassin | bogofilter  <none>        (no description available)

-- no debconf information