Tilman Hausherr created PDFBOX-3741:
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             Summary: usage of default colorspace not checked by preflight
                 Key: PDFBOX-3741
                 URL: https://issues.apache.org/jira/browse/PDFBOX-3741
             Project: PDFBox
          Issue Type: Bug
          Components: Preflight
    Affects Versions: 2.0.5, 1.8.13
            Reporter: Tilman Hausherr


In the test1.pdf file of PDFBOX-3740, the default colorspace DeviceGray with 
color 0 (black) is used for text output (in PDF specification: "The default 
colour shall be black (in DeviceGray")). Preflight should check whether there 
is an output intent but this isn't done. VeraPDF finds this. It should also be 
checked for other operations that may use the default
{quote}
There are two separate colour space parameters: one for stroking and one for 
all other painting operations. Initial value: DeviceGray.
...
There are two separate colour parameters: one for stroking and one for all 
other painting operations. Initial value: black.
{quote}




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