advice on implementing "elastic tabstops" for GTK+ 2.x?

["Nick Gravgaard" <me nickgravgaard com>]

Hi all,

I would like to implement an idea I call "elastic tabstops" (see
nickgravgaard.com/elastictabstops/) for GTK+ 2.x. Could someone advise
me on whether support for this should be added to an exisiting widget
(GtkTextView?), or if another approach should be used?

Any other comments are welcome (but please, no arguing about tabs
versus spaces).

Thanks,
Nick