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From: karl AT aspodata DOT se
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] My gschem 1.9.1 is breaking rubber bands
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Comments: In-reply-to "Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
   message dated "Tue, 21 Jul 2015 15:14:49 -0400."
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Date: Tue, 21 Jul 2015 22:34:33 +0200 (CEST)
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Precedence: bulk

Evan Foss:
...
> There really should be a tool that just lets you do a visual diff.
> Then you get to decide if you want to make the changes. I mean who
> wants to look at a netlist for a schematic that is already in front of
> them? It is easier to compare apples to apples.

Try

  http://www.imagemagick.org/Usage/compare/

see e.g. line 70-96 of:

 http://git.savannah.gnu.org/gitweb/?p=lilypond.git;a=blob;f=scripts/build/output-distance.py;h=49a659b73febd69fff0f79f01b0536b016cf7c1c;hb=HEAD

it is used by the regression test of http://lilypond.org/

Regards,
/Karl Hammar

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