gEDA-user: attribute promotion query

[Peter Baxendale <peter.baxendale@xxxxxxxxxxxx>]

Having read the gschem user guide (on-line version) on attributes and
attribute promotion (several times) I am even more confused, and I'd be
grateful if someone could clarify things for me.

For investigation purposes I instantiate a 7400-1.sym on my gschem page.
I have (attribute-promotion "enabled") in my gafrc file, and I don't
have promote-invisible enabled. (Incidentally, the manual says to use
gschemrc to set these - is this wrong or can it be either?)

I edit attributes for the 7400 component, and I see just device, refdes
and footprint.

Q1 are these the "promoted" attributes?

Q2 the gschem user guide (on line) says "The device= attribute is not
promoted." So why does it appear in the attributes list?

Q3 the gschem user guide says "if you place an unattached visible
attribute inside a symbol and then instantiate that symbol, then that
unattached attribute gets “promoted”; that is, it becomes an attached
attribute." But the footprint attribute is not visible and seems to get
promoted. Why? The slot attribute (and others) looks just the same (not
visible) but is not promoted.

Q4 How do I tell if an attribute is attached or unattached?

Is this just a case of documentation lagging development, or am I
missing something?

-- 
Peter Baxendale <peter.baxendale@xxxxxxxxxxxx>



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