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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
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