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https://issues.apache.org/jira/browse/PDFBOX-620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14026224#comment-14026224
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Nicholas Cottrell commented on PDFBOX-620:
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Wonderful, thanks everyone!
> Text extract fails on some PDF files but not others...
> ------------------------------------------------------
>
> Key: PDFBOX-620
> URL: https://issues.apache.org/jira/browse/PDFBOX-620
> Project: PDFBox
> Issue Type: Bug
> Components: Text extraction
> Affects Versions: 0.7.3, 0.8.0-incubator
> Environment: Tried in Java 5 and 6
> Reporter: Nicholas Cottrell
> Attachments: pdf620-fails.pdf, pdf620-works.pdf
>
>
> Having the same problem with 0.7.3, 0.7.4-dev and 0.8.0 - in 0.7.3 I get text
> with nulls, e.g. "Dermoapo made 'interactive updates' a key part onullits
> stratenull nullr launnull chinnulla new skincare rannull in a competitive
> market. nulle resultnullIncreased sales nullr pharmacies that used the
> updates." while in 0.8.0 it appears as "Dermoapo made 'interactive updates' a
> key part o?its strate? ?r laun?
> chin?a new skincare ran? in a competitive market. ?e result?Increased
> sales ?r pharmacies that used the updates."
> Maybe this is a font problem? Or encoding? I debugged the code in
> PDFTextStripper and and these appear in the charactersByArticle field even
> before normalization.
> In 0.8.0 I get some info logs from the engine:
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: re
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: W
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: n
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: cs
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: scn
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: f
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: CS
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: SCN
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: M
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: m
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: l
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: S
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: BDC
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: c
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: v
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: y
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: h
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: g
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: G
> SP INFO 20:52:12 PDFStreamEngine - unsupported/disabled operation: EMC
> I got the same error with icu4j 3.6.1 and 4.2.1
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