[jira] [Resolved] (PDFBOX-5603) Support GSUB LookupType 2 (Multiple Substitution Format 1)

["Tilman Hausherr (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PDFBOX-5603?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tilman Hausherr resolved PDFBOX-5603.
-------------------------------------
      Assignee: Tilman Hausherr
    Resolution: Fixed

ok, follow up in PDFBOX-5648

> 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
>            Assignee: Tilman Hausherr
>            Priority: Minor
>              Labels: gsub
>             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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