[gedit-list] hiliting words that contain digits and underscores by double clicking

[Jason Walker <jaywalkie yahoo com>]

Hello,
How can I change the behavior of gedit so that when i double click on a C/C++ identifier, the whole identifier is selected, not just part of it. For instance, if I double-click on
_t|his_is_my_identifier
where | represents my mouse pointer's approximate position, only "this" is selected. What should I modify to change this?
Regards,
Jay