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https://issues.apache.org/jira/browse/PDFBOX-3799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16019221#comment-16019221
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Tilman Hausherr commented on PDFBOX-3799:
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I didn't research this fully (I would have needed a test file), it has to do
with diacritics. I just saw that there was an assignment after construction.
Maybe something like a becoming á.
> Problem in TextPosition's hashCode
> ----------------------------------
>
> Key: PDFBOX-3799
> URL: https://issues.apache.org/jira/browse/PDFBOX-3799
> Project: PDFBox
> Issue Type: Bug
> Components: Text extraction
> Affects Versions: 2.0.6
> Reporter: Miro Mannino
> Assignee: Tilman Hausherr
> Fix For: 2.0.7, 3.0.0
>
>
> Just another side effect related to TextPosition's hashCode
> I am using the hashCode because I want to know the color of each letter. To
> do this, during the processTextPosition, I save the current graphic state in
> a map, using the current text position as key. Then, on writeString, I
> iterate all the text positions and I get the color for each of them though
> this map.
> Of course would be easier if this information could be saved in the text
> position. But this is just a desired feature.
> I am discovering that from processTextPosition to writeString sometimes
> happens that the same textPosition has just a different unicode. In
> processTextPosition is just a "x" (char 120), but then on writeString the
> same textPosition the unicode is the x, followed by '̄' (char 772).
> Everything about the textPosition remains the same: same coordinates, same
> System.identityHashCode; the only thing that changes is the unicode, which
> causes the computation of a different hashCode.
> That is giving problem. As workaround I am using now System.identityHashCode
> instead of the current TextPosition's implementation
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