Thomas Freitag authored Feb 14, 2012 and Albert Astals Cid committed Feb 14, 2012

It is an enhancement patch, a
merge fix and a bug fix in one: an enhancement, because it now completes
the implementation overprint mode and devicen in postscript, a merge
fix, because it fixes some bugs in the overprint implementation in
splash of xpdf 3.0.3 and has now the complete functionality (and more!)
of my implementation back again and a bug fix, because it fixes the use
of splash cmyk in postscript which never had worked.

1. Overprint implementation in postscript
To have a complete overprint implementation in the (pure) postscript
device there were just two things missing: overprint mode and the
implementation of the DeviceN colorspace in PostScript. I double checked
my implementation with the Ghent Test Suite with GhostScript (device
pdfwrite) and Acrobat X distiller, and all the tests now succeeds,
either in Acrobat X distiller or in GhostScript. As overprint is a
device dependent feature, it is up to the output device if it supports
ov...