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Date: Fri, 14 Dec 2012 10:15:57 +0100 (CET)
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Subject: Re: [geda-user] Find rat lines
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On Fri, 14 Dec 2012, John Doty wrote:

>
> On Dec 13, 2012, at 9:40 PM, gedau AT igor2 DOT repo DOT hu wrote:
>
>>
>>
>> On Thu, 13 Dec 2012, John Doty wrote:
>>
>>> You miss my point: the fact that the info isn't generally available is part of the confusing design of the tool.
>>
>> It is not available when it gets invalid (change in the netlist). This is a more theoretical question, not an implementation detail of PCB. Could you propose a solution for that, assuming your dream-PCB remembers anything you want and represents copper the way you want?
>
> In red, highlight every point where conductors with different network affiliations touch. Then, after dramatic changes to the netlist, the user will see a lot of red.

How do you _exactly_ define/calculate network affiliation? That was the 
original problem for the non-history case, so don't just assume it is 
solved, solve it.

Just highlighting everything what is in short is possible with the old 
behaviour: press F over a shorted net. This is exactly what we want to 
refine, as it is not helpful on complex boards.

Regards,

Tibor