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https://issues.apache.org/jira/browse/PDFBOX-5648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18043130#comment-18043130
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Fabrice Calafat commented on PDFBOX-5648:
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Is there a possibility for this change to be ported to 3.x? We are using a few
fonts that are using Lookup Type 2 and would love to see that in a 3.0.x
version.
Thanks!
> Support GSUB LookupType 2 (Multiple Substitution Format 1), part 2
> ------------------------------------------------------------------
>
> Key: PDFBOX-5648
> URL: https://issues.apache.org/jira/browse/PDFBOX-5648
> Project: PDFBox
> Issue Type: New Feature
> Components: FontBox
> Affects Versions: 4.0.0
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Priority: Minor
> Labels: gsub
> Fix For: 4.0.0
>
>
> 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. The first step has been done in
> PDFBOX-5603 which is reading these tables. This is the second step, actually
> doing anything with it.
> 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.
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