Is it possible to use arrow keys alone to expand tree node in package explorer in Eclipse on Linux?

Question

When using Eclipse I browse through the package explorer tree using the keyboard arrows a lot.

In Windows I can expand a collapsed node by pressing the →<

Answer 1

If anyone is wondering how to do this with GTK3 - simply open ~/.config/gtk-3.0/gtk.css and add the following:

@binding-set MyTreeViewBinding
{
    bind "Left"     { "expand-collapse-cursor-row" (0,0,0) };
    bind "Right"    { "expand-collapse-cursor-row" (0,1,0) };
}

GtkTreeView
{
  gtk-key-bindings: MyTreeViewBinding;
}