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	Wed, 09 Dec 2015 22:55:27 -0800 (PST)
Date:	Thu, 10 Dec 2015 07:55:25 +0100
From:	"Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] gsch2pcb after refdes-renum? (If implemented
	syncronization detail)
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On Wed, 9 Dec 2015 20:28:45 -0500
DJ Delorie <dj AT delorie DOT com> wrote:

> 
> > Is there still a problem if the cyclic U1->U2->U3->U1 rename is
> > guaranteed to be atomic?
> 
> You still have two problems: First, if you accidentally run the script
> twice, you end up with the wrong refdeses.  Second, you need to
> remember the refdes the part had *the last time you sync'd*.  If the
> layout[*] still had U14 because you last sync'd yesterday and you've
> renamed it five times today, you're out of luck.
> ...

Yes it must be executed exactly once and it must be possible to figure which refdeses changed.

Execute once would be possible with an update counter in *.pcb file or maybe store information in an intermediate file.

If information for forward annotation is stored in a file it might be possibel to use this to figure out which refdes change, otherwise I guess gschem must store the information somewhere or send it by some signalling mechanism for example dbus.


Nicklas Karlsson

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