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Bug#348061: cupsys: pdftops conversion fails on transparency in PDF-files

Package: cupsys
Version: 1.1.23-12
Severity: important

When printing PDF files with transparent object, the transparency is
broken due to the pdftops conversion in the cups printing process.

To add some detail, I am printing from a Mac OS X client to a Debian
Cups-server via the automatic printer detection. The PDF File seems to
be passed to the cups-server, which converts the PDF-file to PS by
utilizing xdpf-utils's pdftops. Although, xdpf is able to process
transparency since version 3.01 and does display the pdf file
correctly, pdftops fails.

I wasn't quite sure to where to report this bug (xpf-utils?). But, I
decided to send it to cupsys because the error affects my cups

By the way, pdf2ps and acroread -toPostScript process correct PS-files
retaining the transparency.

Files presenting the problem can be found here:

-- System Information:
Debian Release: testing/unstable
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.9-2-k7
Locale: LANG=de_DE@euro, LC_CTYPE=de_DE@euro (charmap=ISO-8859-15)

Versions of packages cupsys depends on:
ii  adduser                  3.80            Add and remove users and groups
ii  debconf [debconf-2.0]    1.4.66          Debian configuration management sy
ii  gs-esp                   8.15.1.dfsg.1-1 The Ghostscript PostScript interpr
ii  libc6                    2.3.5-8         GNU C Library: Shared libraries an
ii  libcupsimage2            1.1.23-12       Common UNIX Printing System(tm) -
ii  libcupsys2               1.1.23-12       Common UNIX Printing System(tm) -
ii  libgnutls12              1.2.9-2         the GNU TLS library - runtime libr
ii  libpam0g                 0.79-3          Pluggable Authentication Modules l
ii  libpaper1                1.1.14-3        Library for handling paper charact
ii  libslp1                  1.2.1-5         OpenSLP libraries
ii  patch                    2.5.9-2         Apply a diff file to an original
ii  perl-modules             5.8.7-10        Core Perl modules
ii  procps                   1:3.2.5-1       /proc file system utilities
ii  xpdf-utils               3.01-5          Portable Document Format (PDF) sui
ii  zlib1g                   1:1.2.3-9       compression library - runtime

Versions of packages cupsys recommends:
ii  cupsys-client           1.1.23-12        Common UNIX Printing System(tm) -
ii  foomatic-filters        3.0.2-20050720-1 linuxprinting.org printer support
ii  smbclient               3.0.21a-1        a LanManager-like simple client fo

-- debconf information:
  cupsys/raw-print: true
  cupsys/backend: ipp, lpd, parallel, socket, usb

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