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        Fri, 06 Sep 2013 14:17:51 -0700 (PDT)
Date: Sat, 7 Sep 2013 01:17:42 +0400
From: Vladimir Zhbanov <vzhbanov AT gmail DOT com>
To: gEDA User List <geda-user AT delorie DOT com>
Subject: Re: [geda-user] schdiff and gEDA/gaf 1.9
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On Fri, Sep 06, 2013 at 10:46:11PM +0530, Abhijit Kshirsagar wrote:
> Hey all,
> 
> So I upgraded to 1.9 recently, and there seems to be something wrong
> with schdiff - the output is missing all text. I hacked around, and
> figured that now that with the excellent "gaf export" we could just
> use that in schdiff instead of the old gschem call.
> 
> I also find Imagemagick very painful when it displays the final image,
> so I changed it to eog for me.
> What would be a portable solution here?

I use my own corrections similar to yours. See attached patch.  The
'see' program used there is a part of the 'mime-support' package which
provides you with facilities of flexible adjusting of what programs you want
to use to see or edit something. The package is available at least in
Debian-based distributions. Its programs use ~/.mime.types and
~/.mailcap to achieve their goals. I have just added the following line
in my ~/.mailcap:
  image/png; geeqie %s
and it works as expected.

As for text visibility, as a guess, do you use unchanged color maps?
If not, some colors may become invisible when printed.