[PDFBOX-3920] CIDSet should be PDF/A-2b compatible

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.7
• Fix Version/s: 2.0.8, 3.0.0 PDFBox
• Component/s: PDModel
• Assignee: Tilman Hausherr
• Reporter: Tilman Hausherr
• Created: 04/Sep/17 16:50
• Updated: 02/Nov/17 21:01
• Resolved: 04/Sep/17 18:04

Description

From eruiz0 in the user mailing list:

I have created PDF/A-2b document with pdfbox and I have found that the font subsetting provided by pdfbox doesn't match the following requirement from the specification:

Specification: ISO 19005-2:2011, Clause: 6.2.11.4, Test number: 4
If the FontDescriptor dictionary of an embedded CID font contains a CIDSet stream, then it shall identify all CIDs which are present in the font program, regardless of whether a CID in the font is referenced or used by the PDF or not.

That is: some CIDs which are in the CIDToGidMap don't appear in the CIDSet.
Maybe it is a bug or you can add an option to generate the CIDSet to be consistent with the CIDToGidMap.

Additional details (including a sample pdf file) here:
https://github.com/veraPDF/veraPDF-library/issues/907

Issue Links

• duplicates: PDFBOX-3921 CIDSet should be PDF/A-2b compatible