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https://issues.apache.org/jira/browse/PDFBOX-283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14056388#comment-14056388
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Tilman Hausherr commented on PDFBOX-283:
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Thanks for the test code and the test file. PDTextbox is gone in the trunk but
is in the 1.8 version, that got me confused. Anyway, now that I had your code
and pdf I understand what was happening, and that there is no test at this
time. I committed your changes in 1609211 in the 1.8 version and rev 1609212 in
the trunk. Please do visual tests on everything acroform-related as much as you
can to be sure.
> Character encoding/appearance issues when filling forms
> -------------------------------------------------------
>
> Key: PDFBOX-283
> URL: https://issues.apache.org/jira/browse/PDFBOX-283
> Project: PDFBox
> Issue Type: Bug
> Components: AcroForm
> Attachments: PDAppearance.diff, PDAppearance.patch,
> PDAppearance_bis.diff, acroform.pdf
>
>
> [imported from SourceForge]
> http://sourceforge.net/tracker/index.php?group_id=78314&atid=552832&aid=1735902
> Originally submitted by scop on 2007-06-12 10:23.
> When filling a text field with non-ASCII characters such as in my surname
> "Skyttä" and saving the document in a UTF-8 environment, something goes
> wrong with the appearance of the text.
> The value itself seems to be stored correctly, but when opening the doc, the
> appearance of "ä" is not that, but rather something which happens when UTF-8
> is mistakenly treated as ISO-8859-1 (two garbage characters).
> PDAppearance uses the platform default encoding in quite a few places which
> apparently has potential to mess things up. In particular,
> insertGeneratedAppearance() generates a PrintWriter from an OutputStream
> without specifying the encoding. In fact, if I hack that to use ISO-8859-1,
> the appearance of my "ä" case is correct, but that won't obviously work with
> anything else than chars that are valid ISO-8859-1.
> In which char encoding should the value be written to the appearance stream
> (at end of insertGeneratedAppearance())?
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