This file is indexed.

/usr/share/help/es/gnome-terminal/pref-custom-exit.page is in gnome-terminal-data 3.18.3-1ubuntu1.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/share/help/es/gnome-terminal/../../../help-langpack/es/gnome-terminal/pref-custom-exit.page