Bug#875911: libqsastime-dev: unhandled symlink to directory conversion: /usr/share/doc/PACKAGE

[Mo Jun]

Package: libplplot-dev
Version: 5.13.0+dfsg-4
Followup-For: Bug #875911

Dear Maintainer,

It seems that this problem also exists in libplplot-dev package.

Upgrading the libplplot-dev package from 5.10.0+dfsg2-0.4+b3 to
5.13.0+dfsg-4 resulted in that '/usr/share/doc/libplplot12/examples' is
not deleted:

Preparing to unpack .../5-libplplot-dev_5.13.0+dfsg-4_amd64.deb ...
Unpacking libplplot-dev (5.13.0+dfsg-4) over (5.10.0+dfsg2-0.4+b3) ...
dpkg: warning: unable to delete old directory
'/usr/share/doc/libplplot12/examples': Directory not empty

and that '/usr/share/doc/libplplot-dev' is still a symlink:

$ ls -ld /usr/share/doc/libplplot-dev
lrwxrwxrwx 1 root root 11 Feb 17  2016 /usr/share/doc/libplplot-dev ->
libplplot12

and that 'changelog.Debian.gz', 'changelog.gz' and 'copyright' are missing in
/usr/share/doc/libplplot-dev:

$ ls -l /usr/share/doc/libplplot-dev/
total 4
drwxr-xr-x 2 root root 4096 Sep 26 12:32 examples

Regards,
Jun MO

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

Kernel: Linux 4.12.0-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8),
LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libplplot-dev depends on:
ii  libfreetype6-dev            2.8-0.2
ii  libltdl-dev [libltdl3-dev]  2.4.6-2
ii  libplplot15                 5.13.0+dfsg-4
ii  libplplotcxx13              5.13.0+dfsg-4
ii  libplplotfortran0           5.13.0+dfsg-4
ii  libplplotqt2                5.13.0+dfsg-4
ii  libplplotwxwidgets1         5.13.0+dfsg-4
ii  libqhull-dev                2015.2-2
ii  libqsastime-dev             5.13.0+dfsg-4
ii  libshp-dev                  1.4.1-1

Versions of packages libplplot-dev recommends:
ii  cmake            3.9.3-1
pn  libplplot-d      <none>
ii  libplplot-lua    5.13.0+dfsg-4
pn  libplplot-ocaml  <none>
ii  pkg-config       0.29-4+b1

Versions of packages libplplot-dev suggests:
pn  plplot-doc  <none>

-- debconf-show failed