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From: Christian Riggenbach <criggenbach AT magahugu DOT ch>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] Using Lua to safely read configuration and layout files (program attached)
Date: Sun, 08 Feb 2015 14:12:58 +0100
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On Sunday 08 February 2015 12.41:12 you wrote:
> I agree that scripts/expressions would have little use and cause problems in
> general schematics which are modified and saved often, but I can also see
> that it would be very useful for parametric symbols and reusable
> sub-circuits. I wouldn't want to limit the parser/interpreter to preclude
> it - it would be better to define what will and won't be supported by the
> application.

It would be hard to police, but i think that's more of a sledge hammer 
problem: no one should forbid me the possibility to use one, even if it's not 
the best option. And being honest, to have a whole scripting language for 
symbols would be sweet.

> It might be enough simply to say that schematics/symbols can be as dynamic
> as you like, but they will be evaluated once when instantiated and will be
> static from that point on.

+1

Or have some kind of editor in gschem to "escape" scriptlets. You can define 
accessors for lua objects, so you can parametricate quite simply without 
disturbing the API.

-- 
mit freundlichem Gruss

Christian Riggenbach