Bug#912993: printer-driver-cups-pdf: creates wrong filename using short title

[Martin Lange <lange_martin@gmx.de>]

Package: printer-driver-cups-pdf
Version: 3.0.1-5
Severity: normal

Dear Maintainer,

using the cups-pdf printer with a short document title (< 32 chars) results in faulty generated filename. This don't affect titles >= 32 chars.

example:
lp -d PDF -t short INPUT.pdf

result:
a generated PDF file named "short__rtin_PDF.pdf"
(in this case, file name seems to be the target path (/home/martin/PDF) with first characters replaced by the title in some magically appeared brackets)

expected:
a generated PDF file named "short.pdf" in /home/martin/PDF/

some logging:
[DEBUG] now extracting postscript code
[DEBUG] found title in ps code: (short)
rtin/PDF
Mon Nov  5 16:49:30 2018  [DEBUG] found end of postscript code: %%EOF

[DEBUG] all data written to spoolfile: /var/spool/cups-pdf/SPOOL/cups2pdf-10959
[DEBUG] trying to use PS title: (short)
rtin/PDF
[STATUS] ***Experimental Option: DecodeHexStrings
[DEBUG] checking for hex strings: (short)
rtin/PDF
[DEBUG] not a hex string, has no start marker: (short)
rtin/PDF
[DEBUG] calling alternate_replace_string
[DEBUG] removing alternate special characters from title: (short)
rtin/PDF
[DEBUG] removing leading _ from title: _short__rtin_PDF
[DEBUG] title successfully retrieved: short__rtin_PDF
[DEBUG] input data read from stdin
[DEBUG] output filename created: /home/martin/PDF/short__rtin_PDF.pdf
[DEBUG] ghostscript commandline built: /usr/bin/gs -q -dCompatibilityLevel=1.2 -dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite -sOutputFile="/home/martin/PDF/short__rtin_PDF.pdf" -dAutoRotatePages=/PageByPage -dAutoFilterColorImages=false -dColorImageFilter=/FlateEncode -dPDFSETTINGS=/prepress -c .setpdfwrite -f /var/spool/cups-pdf/SPOOL/cups2pdf-10959



-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.18.0-2-amd64 (SMP w/8 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE= (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages printer-driver-cups-pdf depends on:
ii  cups            2.2.8-5
ii  cups-client     2.2.8-5
ii  ghostscript     9.25~dfsg-4
ii  libc6           2.27-6
ii  libcups2        2.2.8-5
ii  libpaper-utils  1.1.24+nmu5

printer-driver-cups-pdf recommends no packages.

Versions of packages printer-driver-cups-pdf suggests:
ii  system-config-printer  1.5.11-3

-- no debconf information