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ghostscript
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10.02.1
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IdiomSet
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PPI_CUtils
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%% %% Idioms for the PPI Media GmbH PPI_ColorUtils ProcSet %% This appears to be a kind of desktop colour separation utility. If it is %% used with the pdfwrite PassThroughJPEGImages feature then instead of %% converting images from colour to gray, we embed the colour image data %% but with a DeviceGray colour space, which leads to incorrect output. %% To fix that, turn off the feature if cuForceGray is set to true. This %% is the first time we've seen this, and more work may be required. %% currentuserparams /IdiomRecognition get <</IdiomRecognition false>> setuserparams /PPI_CUtils << /cuForceGray [ {/_cuForceGray exch cuPut} bind {dup //true eq {currentdevice //null //false mark /PassThroughJPEGImages //false .putdeviceparamsonly}if pop pop /_cuForceGray exch cuPut} bind ] >> /IdiomSet defineresource pop <</IdiomRecognition 3 -1 roll>> setuserparams