forgot one cfun definition
start implementing the cell renderer in lisp
find the private definition of the stuff in gtk-cell-renderer
the gtk-grovel file was missing all the time!
i added a .gitignore
write more code for the custom cell renderer
in init-class the example defines a finalizer. perhaps if i do this as well in the ip-address-class, i can call the program again without restarting lisp all the time