gEDA-bug: [Bug 911440] [NEW] Attribute parameter substitution patches

[Peter TB Brett <911440@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Stephan BÃttcher writes:

> here's a patch to gnetlist that implements parameter substitution in
> hierarchical schematics.  The idea is that some attribute values in the
> child page are defined in terms of parameters, that can be substituted
> in individual instances.
> 
> A resistor in the sub-schematic may have the attribute
> 
>  value=$RFB
> 
> and the instance symbol for that sub-scematic in tha parent schematic
> may have the attibute
> 
>  parameter=RFB:12k

He continues:

> a extension of the previous patch to allow parameter names to contain
> digits, and allow references to arbitrary parameter names in ${braces}.

I'm adding a report here because I haven't yet decided whether it's a
good idea to pick this patch up.

** Affects: geda
     Importance: Undecided
         Status: New


** Tags: gnetlist

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https://bugs.launchpad.net/bugs/911440

Title:
  Attribute parameter substitution patches

Status in GPL Electronic Design Automation tools:
  New

Bug description:
  Stephan BÃttcher writes:

  > here's a patch to gnetlist that implements parameter substitution in
  > hierarchical schematics.  The idea is that some attribute values in the
  > child page are defined in terms of parameters, that can be substituted
  > in individual instances.
  > 
  > A resistor in the sub-schematic may have the attribute
  > 
  >  value=$RFB
  > 
  > and the instance symbol for that sub-scematic in tha parent schematic
  > may have the attibute
  > 
  >  parameter=RFB:12k

  He continues:

  > a extension of the previous patch to allow parameter names to contain
  > digits, and allow references to arbitrary parameter names in ${braces}.

  I'm adding a report here because I haven't yet decided whether it's a
  good idea to pick this patch up.

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