[Bug 1348384] Re: evince and okular do not render eps files correctly resulting in a black background

[Jeremy Bicha]

** Description changed:

  Impact
  ======
  This Ubuntu 14.04 SRU caused a regression where some .eps files have a black background that makes it almost impossible to see the original content.
  
  https://launchpad.net/ubuntu/+source/libspectre/0.2.7-2ubuntu1.1
  
  This was fixed in Ubuntu 15.04 and newer releases but was not fixed in
  14.04 until now.
  
  Test Case
  =========
  Use Ubuntu's default eps viewer (evince) to open these two test files.
  
  https://bugs.launchpad.net/ubuntu/+source/libspectre/+bug/1348384/+attachment/4171120/+files/countrate.eps
  
  https://bugs.launchpad.net/ubuntu/+source/libspectre/+bug/1242678/+attachment/3886169/+files/test.eps
  
  Rotate test.eps 4 times to ensure that the file still displays correctly
  when rotated. countrate.eps should not have a black background.
  
  Other Info
  ==========
  Instead of using the fix from 15.04, 16.04 and 16.10, I chose to use the upstream's version of fix-document-rotation.patch included in 0.2.8 and in 17.04. (fix-document-rotation.patch was the only change made in the original SRU)
+ 
+ https://cgit.freedesktop.org/libspectre/commit/?id=38bb113d
  
  Regression Potential
  ====================
  Low. This fix is now in upstream's 0.2.8 and is in Debian and Ubuntu 17.04.
  
  By the way, the 17.04 fix was briefly broken by a ghostscript security
  fix but the 16.04/16.10 fix was not affected. For more details about
  that, see bug 1647917.
  
  Original Bug Report
  ===================
  Several eps files, which previously rendered correctly, are not rendered correctly by evince and okular.  It looks as though something is wrong with the "transparency" setting, since most of the incorrectly-rendered files have a black background, but the figure can somewhat be made out on top of hte black background.  The PDF files I have tested are NOT affected.  EPS files that were previously viewable correctly ARE affected.
  
  Thank you for your time.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: evince 3.10.3-0ubuntu10.1
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Uname: Linux 3.13.0-32-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Jul 24 16:54:06 2014
  ProcEnviron:
   LANGUAGE=en_US
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: evince
  UpgradeStatus: Upgraded to trusty on 2014-06-03 (51 days ago)

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https://bugs.launchpad.net/bugs/1348384

Title:
  evince and okular do not render eps files correctly resulting in a
  black background

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