possible issue with ps2pdf (9.25) and transparency

"Nelson H. F. Beebe" <[email protected]> Sat, 15 Sep 2018 08:13:30 -0600
Newsgroups gmane.comp.printing.ghostscript.devel
Message-ID <[email protected]>
A posting on the tex-live list (http://tug.org/mailman/listinfo/tex-live)
today reported that ps2pdf from ghost*-9.25 does not preserve transparency
when the file

	% cat test-transparency.ltx
	\documentclass{article}
	\usepackage{pstricks}
	\begin{document}
	\begin{pspicture}(-3,-3)(3,3)
	  \pscircle*[linecolor=blue]           (-1,0){3}
	  \pscircle*[linecolor=red,opacity=0.2]( 1,0){3}
	\end{pspicture}
	\end{document}

is processed with TeX Live 2018 by the steps

	latex test-transparency.ltx
	dvips test-transparency.dvi
	ps2pdf test-transparency.ps

I have verified this locally on an Ubuntu 16.04 box: using the
vendor-supplied ps2pdf version 9.16 in the last step produces
transparent overlapping circles, while ps2pdf version 9.25 from the
local build that I did earlier this week produces red and blue
opaquely painted circles.

Can others on this list confirm this apparent misbehavior?

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- Nelson H. F. Beebe                    Tel: +1 801 581 5254                  -
- University of Utah                    FAX: +1 801 581 4148                  -
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