Tilman Hausherr created PDFBOX-5603:
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Summary: Support GSUB LookupType 2 (Multiple Substitution Format 1)
Key: PDFBOX-5603
URL: https://issues.apache.org/jira/browse/PDFBOX-5603
Project: PDFBox
Issue Type: Improvement
Components: FontBox
Reporter: Tilman Hausherr
Fix For: 3.0.0 PDFBox
This table is the reverse of ligatures, i.e. replace one glyph with several
glyphs. I don't know if this is useful at all for us, except understanding the
current implementation.
This will be implemented in two steps. Reading these tables is one thing,
actually doing anything with it is another, because MapBackedGsubData has a
{{Map<List<Integer>, Integer>}} which is not useful here. Either we'd have to
introduce a second map, or extend the map so that the value is also a list.
I'll do just the first part for now, which I expect to stay regardless of
changes for the second part.
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