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Date: Tue, 1 Sep 2015 12:41:54 +0200 (CEST)
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Subject: Re: [geda-user] full perl parser for pcb files?
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On Tue, 1 Sep 2015, Levente (leventelist AT gmail DOT com) [via geda-user AT delorie DOT com] wrote:

>Is this written in Perl?

C + yacc + lex

>Is there any documentation for PCB internals?

The PCB code is commented well at strategic places. Some parts use strange 
paradigms, but most parts are pretty straightforward to understand. At 
least this is my experience hacking pcb-rnd.

Also, most parts of the PCB source doesn't suffer from the spaghetti 
effect and you can go there to check/fix things locally without first 
needing to understand the whole class hierarchy or type system or whatnot. 
Names are good too, so it's usually easy to guess a keyword to search for.

Regards,

Igor2