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https://issues.apache.org/jira/browse/PDFBOX-1919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14029332#comment-14029332
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John Hewson commented on PDFBOX-1919:
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{quote}
Furthermore the pdf uses span tags which could be the real culprit here. I've
to admit that I didn't understand the purpose of that tag yet.
{quote}
Andreas, span tags are probably not relevant - they're really for adding alt
text to images for screen readers, but they can be used as a hack to add alt
text for unicode symbols which (really) old screen readers don't recognise. The
website you link to gives an example of "≥" having a span tag with "greater
than or equal to" as the text. However, we're trying to extract the Unicode
text, not the assistive description of it for a screen reader - we really do
want "≥" as the text for that character, not the string "greater than or equal
to".
However I'm still not sure what's causing Acrobat to produce two different
results.
> Font descriptor flags are not implemented
> -----------------------------------------
>
> Key: PDFBOX-1919
> URL: https://issues.apache.org/jira/browse/PDFBOX-1919
> Project: PDFBox
> Issue Type: Bug
> Components: Text extraction
> Affects Versions: 1.8.5, 1.8.6, 2.0.0
> Reporter: Corentin Regal
> Attachments: PDFBOX-1919.AdobeReader.txt, PDFBOX-1919.pdf,
> PDFBOX-1919.txt
>
>
> The font descriptor flags are not set.
> They are described in the document "PDF reference 1.7" at : 5.7.1 Font
> Descriptor Flags
> The methods in PDFontDescriptor are ready but never called :
> setFlags()
> setSerif()
> setAllCap() which is used in a lot of PDF
> ...
> I saw some TODO that relate to that issue in the code, is it planned to be
> implemented soon?
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