/usr/share/doc/libgemplugin-ruby/README.gz is in libgemplugin-ruby 0.2.3-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libgemplugin-ruby/../libgemplugin-ruby1.8/README.gz
/usr/share/doc/libgemplugin-ruby/../libgemplugin-ruby1.8/README.gz