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https://issues.apache.org/jira/browse/PDFBOX-4471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16777229#comment-16777229
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Tilman Hausherr commented on PDFBOX-4471:
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Having handlers for each type would make it easier to find where the real stuff
is done, but it should be taken care not to have double code because
insertGeneratedAppearance() does most of the job for all types.
> Different fields look alike if they have the same /AP/N before value change
> ---------------------------------------------------------------------------
>
> Key: PDFBOX-4471
> URL: https://issues.apache.org/jira/browse/PDFBOX-4471
> Project: PDFBox
> Issue Type: Bug
> Components: AcroForm
> Affects Versions: 2.0.13
> Reporter: Tilman Hausherr
> Priority: Major
> Attachments: csOnePage.pdf
>
>
> See attached SO answer - in the attached file, different fields point to the
> same /AP/N object. I think this could be fixed by changing
> {{AppearanceGeneratorHelper.setAppearanceValue()}} by removing the "if"
> segment in {{if (appearance != null && appearance.isStream())}} and keep the
> "else" part only.
> I'm wondering why we are reusing the existing appearance stream, is there are
> use case to this? I ran the tests after making the change and there was a
> difference but it was invisible.
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