This package provides Snort and Suricata IDS rule syntax highlighting for Gtk-based text editors such as gedit and xed
Save snort-suricata.lang to the user's language-specs dir (see https://developer.gnome.org/gtksourceview/stable/lang-reference.html):
mkdir -pv ~/.local/share/gtksourceview-3.0/language-specs/
cp ./snort-suricata.lang ~/.local/share/gtksourceview-3.0/language-specs/