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The /Subtype entry that specifies the mime type of an embedded file is inside the embedded file stream dictionary directly, not it in the parameter dictionary. See Table 45 and 46 in the PDF 1.7 specification: https://www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/PDF32000_2008.pdf#page=112
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Add a new make target that installs the qpdf libraries without executables or documentation.
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This solves libtool: compile: unable to infer tagged configuration libtool: error: specify a tag with '--tag' build issues when using toolchain that prevents libtools inference rules from working correctly (e.g. ccache).
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Check for this->encrypt seems to be moved to plugged crypto implementations, so it can be removed from Pl_AES_PDF.cc.
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Operations that add the same object to multiple places in the pages tree are throwing exceptions and then later causing assertion failures. The assert calls shouldn't be there.
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I don't want additional, undiscovered bugs to fully block page splitting/merging operations.
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Also handle direct annotation, though this is much less likely.
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When copying a page from the original file to the output in --pages, don't alter the fields or annotations for the first copy of each page.
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Also improve behavior around direct vs. indirect resources.
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Converted ResourceFinder to ParserCallbacks so we can better detect the name that precedes various operators and use the operators to sort the names into resource types. This enables us to be smarter about detecting unreferenced resources in pages and also sets the stage for reconciling differences in /DR across documents.