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From: Simon Wright <simon@pushface.org>
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Subject: Re: David, have you thought about using an existing editor?
Date: Thu, 22 Jan 2015 18:13:26 +0000
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"J-P. Rosen" <rosen@adalog.fr> writes:

> There is also JGrasp (www.jgrasp.org), with interesting diagrams.

I had an offer (back in the 20th century) from someone to assist on a
project; he insisted on using JGrasp, which has the property of
completely rewriting the source, which makes it almost impossible to use
any sort of version control system (at least, if you're interested in
what has changed). So I had to turn him down.