Hi there, this is more like a general question about
a (future?) feature 
The latest bluefish editor, a gtk2 project, showcases
how nice rearrangement of tabs can be done.
I was asking myself how difficult it would be to extend
the functionality of
Gtk::Notebook.new
to also allow this easy and nice rearrangement somehow?
Something like, I dont know:
Gtk::Notebook.new(true)
or
your_notebook.allow_rearrange=true
(Something along those lines).
It would be a lot easier than to work a lot with signals
to get this functionality