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https://issues.apache.org/jira/browse/PDFBOX-4032?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16284696#comment-16284696
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Tilman Hausherr commented on PDFBOX-4032:
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I ran the file with VeraPDF and https://www.pdf-online.com/osa/validate.aspx
and they didn't complain about that (I corrected the xref table in the file
first, it was incorrect). Could you run nitro with the corrected file? If there
are still problems - have you tried reporting to them? Of course I could make
that change but I wonder if there are other bad readers that haven't
implemented the list.
> Handle correctly special characters while writing COSString
> -----------------------------------------------------------
>
> Key: PDFBOX-4032
> URL: https://issues.apache.org/jira/browse/PDFBOX-4032
> Project: PDFBox
> Issue Type: Improvement
> Components: Writing
> Affects Versions: 2.0.8
> Reporter: Ladislav Dudáš
> Fix For: 2.0.9
>
> Attachments: Contains_tab_bad.pdf,
> Contains_tab_bad_offset-corrected.pdf, Contains_tab_ok.pdf
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> Regarding to case PDFBOX-3107. There was change in CosWritter.java that if
> string contains characters CR (0x0d) and LF (0x0a) the string is written in
> hex format. This may be ok, but PDF specification (7.3.4.2 Literal Strings)
> explicitly defines more characters that should handle specially.
> I'm providing another version of the code that handles all special characters
> without transforming to hex format.
> PR [#41|https://github.com/apache/pdfbox/pull/41]
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