cmyk colorspace

I was having trouble with colorspaces, so I built yesterday's CVS head. An
example of problematic file is attached. It is a cymk colorspace jpeg,
and I expect the chairs to be red, however they appear cyan. The problem
is, yesterday, before upgrading, I was running a 2004 copy of GraphicsMagick:

Version: GraphicsMagick 1.2 unreleased Q8 http://www.GraphicsMagick.org/
Copyright: Copyright (C) 2002, 2003, 2004 GraphicsMagick Group. Additional copyr
ights and licenses apply to this software, see http://www.GraphicsMagick.org/www
/Copyright.html

and the chairs appeared correctly as red. So, I see a regression after 3 years
of improvements(!) Both were configured with the same options, and libjpeg
wasn't changed.

(My problem was then that convert -colorspace rgb orig.jpg new.jpg gave
a cyan version, but one thing at a time. An old 2002 (pre GraphicsMagick)
version of convert works properly.)

Thoughts?

Cheers,

Patrick

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