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Tue, 08 Dec 2015 12:52:58 -0800 (PST) | |
Date: | Tue, 8 Dec 2015 21:52:53 +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) | |
Message-Id: | <20151208215253.3abe2848c422ca7ca09264f4@gmail.com> |
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> On Dec 8, 2015, at 9:41 AM, Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote: > > >>> To put a serial number on each symbol would work but change file format. > >> > >> Nope. Just an attribute, but: > >> > >> We’ve discussed this many times, and the problem is the unrestricted semantics of symbol instance copying. A program that put the necessary restrictions in place would no longer be gschem, and I expect it would be far less usable. > >> > >> John Doty Noqsi Aerospace, Ltd. > >> http://www.noqsi.com/ > >> jpd AT noqsi DOT com > > > > I also think file format is better without the serial number. I guess most updates are idempotent and for this everything is fine, did you also discuss a mechanism to make sure rename happen only once? > > There can’t be a mechanism. Consider the case where page 2 is a variant of page 1, so in a shell we: > > cp page1.sch page2.sch > gschem page2.sch > > Or, how do you tell whether cut and paste represents a duplication operation or a move operation? > > John Doty Noqsi Aerospace, Ltd. > http://www.noqsi.com/ > jpd AT noqsi DOT com Yes of course. If schematic and pcb is compared it is only possible to tell the differences. Nicklas Karlsson
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