Change the default keyboard behaviour on tree control

[Damián Nohales <damiannohales gmail com>]

Hello,

I'm using GNOME the last years and I begin to note that a usability 
leaks on the GTK tree control.

I never develop software using GTK+ library, but I guess that the 
problem begins with the default behaviour with the keyboard tree control 
manipulation. An intuitive mode to program this behaviour is that all 
the tree control can be navigated using only the key arrows, I think the 
easiest way to understand the control behavior. However, the left and 
right arrows do not have any functionality in the tree control. The 
functionality of these arrows (open and close tree nodes) is provided by 
"+" and "-" keys, something besides being uncomfortable, it cost me to 
discover :-( .

What do you think? will be better add this key access to the tree 
control default behaviour?
There is a way to myself configure this behaviour without recompile the 
library?

I'm sorry if I use the incorrect mail list...

Regards!