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https://issues.apache.org/jira/browse/PDFBOX-4810?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andreas Lehmkühler resolved PDFBOX-4810.
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Resolution: Fixed
> Improve CodespaceRange to be in line with the spec
> --------------------------------------------------
>
> Key: PDFBOX-4810
> URL: https://issues.apache.org/jira/browse/PDFBOX-4810
> Project: PDFBox
> Issue Type: Improvement
> Components: FontBox
> Affects Versions: 2.0.19, 3.0.0 PDFBox
> Reporter: Andreas Lehmkühler
> Assignee: Andreas Lehmkühler
> Priority: Major
> Fix For: 2.0.20, 3.0.0 PDFBox
>
>
> While working on PDFBOX-4749 I've realized that the implementation of a
> CodespaceRange from a CMap isn't correct.
> For one byte ranges startBytes and endBytes define a linear range of values.
> Double byte values define a rectangular range +not+ a linear range.
> Examples:
> * <00> <20> defines a linear range from 0x00 up to 0x20
> * <8140> to <9FFC> defines a rectangular range. The high byte has to be
> within 0x81 and 0x9F and the low byte has to be within 0x40 and 0xFC. The old
> implementation assumes the codespacerange ranges from <8140> to <9FFC>
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