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Date: Fri, 11 Sep 2015 22:55:58 +0200
From: "Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Subject: Re: [geda-user] About reinventing the wheel, and how to avoid it
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On Fri, 11 Sep 2015 16:38:03 -0400
DJ Delorie <dj AT delorie DOT com> wrote:

> 
> > Even though you have to remember attributes and values yourself it
> > is not just arbitrary text. For already defined attributes it would
> > have been nice with a list to choose from and for each attribute a
> > list of predefined values to chose from where appropriate.
> 
> It's not "just arbitrary" because some other tool (typically gnetlist
> for gschem) interprets the values.  But as far as gschem itself is
> concerned, aside from a few convenience pulldowns that provide
> commonly used defaults, the text really is just arbitrary.
> 
> If you were using gschem with something other than gnetlist, which had
> a different interpretation of the text, it would still not be "just
> arbitrary" to that other something, but not because gschem itself gave
> it any meaning.
> 
> Thus, my position that adding arbitrary text *in gschem* is not
> difficult.
> 
> The task is more difficult in something like pcb because the
> attributes have meaning *to pcb*, and pcb usually has to interpret
> them in realtime as the user is editing.  It's the meaning that causes
> the difficulty, not the attribute storage itself.  The realitime
> requirement often dictates a non-"arbitrary" internal storage as well.
> 
> (this is similar to the XML "problem" - XML defines a structure for
> storing information, but doesn't give any meaning to the information,
> leading to lots of incompatible implementations)


I agree.