Re: [bug-gv] gv fails when fed via pipe

[Nuno Silva]

On Sun, May 04, 2014 at 12:28:42PM -1000, Paul Wessel wrote:
> Hi list-
> 
> I have noticed that gv often crashes when a process writes PostScript
> directly to it via a pipe while the same PostScript, if first saved to
> a file, opens fine.  These cases always involves the image operator.
> We _think_ we are writing the PS correctly as it works in all other
> contexts except the piping via gv.
> 
> Attached is a small example (issue.ps) that demonstrates the
> issue. For instance,
> 
> gv issue.ps   [works fine]
> gv - < issue.ps [gives errors]
> 
> I am using gv version 3.7.4 installed via macports on OSX 10.9.2.

I can reproduce this with gv 3.7.3 on Gentoo GNU/Linux. I also did some
quick tests with other tools that (AFAIK) use ghostscript internally,
and they did *not* have this issue: convert (imagemagick), ps2pdf.


  $ convert - issue.png < issue.ps

  $ ps2pdf - issue.pdf < issue.ps

I did also try with ghostscript as well, and it worked:

  $ gs -q -sPAPERSIZE=a4 -dBATCH -dNOPAUSE -sDEVICE=ps2write \
     -sOutputFile=out.ps - < issue.ps


Converting PDF files with images to postscript, and then invoking gv in
the same way on the resulting postscript files seems to trigger some
error as well.

-- 
Nuno Silva (aka njsg)