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https://issues.apache.org/jira/browse/PDFBOX-4667?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16949245#comment-16949245
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Struve Pierre commented on PDFBOX-4667:
---------------------------------------

Thanks for understanding me :)

I have not enough knowledge on pdfbox and fonts to advise on a fix solution.

I just made a test by modifying a font so it would match all code page ranges 
and it returns -1 as well. Even if 
org.apache.fontbox.ttf.OS2WindowsMetricsTable#codePageRange1 is set to 
4294967295 converted as int (`ulCodePageRange1 = 
(int)ttf.getOS2Windows().getCodePageRange1()`) it is equals to -1.


Can I do something to help.

> Issue in FontMapperImpl#isCharSetMatch when font codePageRange is -1
> --------------------------------------------------------------------
>
>                 Key: PDFBOX-4667
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4667
>             Project: PDFBox
>          Issue Type: Bug
>          Components: PDModel
>    Affects Versions: 2.0.16
>            Reporter: Struve Pierre
>            Priority: Trivial
>         Attachments: OcrB Regular.ttf, screenshot-1.png
>
>
> Hi I met an issue with a font.
> It seems to me that code page range has not been set and then in 
> org.apache.pdfbox.pdmodel.font.FontMapperImpl#isCharSetMatch -1 is used.
> It seems to me that -1 means "open bar".
> I was trying to find a font that matches CHINESE_SIMPLIFIED 
> (cidSystemInfo.getOrdering{color:#9876aa}(){color}.equals{color:#9876aa}({color}{color:#6a8759}"GB1"{color}{color:#9876aa}){color}),
>  and due to the -1 this font was matched and unluckily it was the one picked.
> Do you think we can make a special case for -1 (return false)?
> Is there any font currently that matches all code page ranges?
>  



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