/usr/share/doc/libgmerlin-dev/AUTHORS is in libgmerlin-dev 1.2.0~dfsg+1-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libgmerlin-dev/../libgmerlin0/AUTHORS
/usr/share/doc/libgmerlin-dev/../libgmerlin0/AUTHORS