These files allow you to do syntax highlighting for the Euphoria programming language.
For programs using GTK2 -- i.e. Pluma, gedit, etc.
sudo cp euphoria.lang /usr/share/gtksourceview-2.0/language-specs/euphoria.lang
sudo cp gedit_syntax.xml /usr/share/mime/packages/
sudo cp classic.xml /usr/share/gtksourceview-2.0/styles/
For programs using GTK3 -- i.e. EuGTK Sourceview
sudo cp euphoria.lang /usr/share/gtksourceview-3.0/language-specs/euphoria.lang
sudo cp gedit_syntax.xml /usr/share/mime/packages/
sudo cp classic.xml /usr/share/gtksourceview-3.0/styles/
Actually, it doesn't hurt to do both :)
sudo cp cobalt.xml /usr/share/gtksourceview-2.0/styles/
sudo cp oblivion.xml /usr/share/gtksourceview-2.0/styles/
sudo cp cobalt.xml /usr/share/gtksourceview-3.0/styles/
sudo cp oblivion.xml /usr/share/gtksourceview-3.0/styles/
sudo chmod 777 /usr/share/gtksourceview-2.0/language-specs/euphoria.lang
sudo chmod 777 /usr/share/gtksourceview-3.0/language-specs/euphoria.lang