gEDA-dev: BUG: PCB Crashes when loading layout from command line

[DJ Delorie]

> adding core code without testing both HIDs).

As I'm working on the tutorial, I *AM* using both hids.  A lot.

> It does seem strange that the core is dictating UI policy, e.g.,
> what a certain key should do. I guess I have to remember that PCB's
> core isn't really "backend" stuff as such.. its more a shared
> portion which the HID "skins" with different widgets.

The core still knows more about the gui than it should, but unless we
want to COMPLETELY redesign how Notify() and the tools work, it's
going to stay that way for a while.

I think the core will continue to expect a GUI with a graphical screen
and some type of pointing/keyboard input pair though.  The purpose of
the HID stuff was to isolate the gui-specific bits, like window layout
and graphics mechanics, not to completely isolate the core from the
user; as well as allow us to hook in the exporters.