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Posted to dev@pdfbox.apache.org by "Thomas Fischer (JIRA)" <ji...@apache.org> on 2010/06/21 19:33:23 UTC

[jira] Created: (PDFBOX-756) Some characters from TeX-created files are mapped into ASCII range 1-31

Some characters from TeX-created files are mapped into ASCII range 1-31
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                 Key: PDFBOX-756
                 URL: https://issues.apache.org/jira/browse/PDFBOX-756
             Project: PDFBox
          Issue Type: Bug
          Components: Text extraction
    Affects Versions: 1.2.0
         Environment: Mac OS X 10.6.4
            Reporter: Thomas Fischer
            Priority: Minor


For some TeX-created files, some characters are mapped to low ASCII values. Example:
fx  2y − fx − 2y 
instead of
(x + 2y) - f(x − 2y) =
With the non-printable characters denote by \xN, PDFBox's result is
f\x3x\x4 2y\x5 − f\x3x − 2y\x5 \x6
This probably cannot be fixed, since in another file the same numbers represent different characters:
Za  {a, a  1, . . .}
instead of
Z(a) = {a, a + 1,...}
(Z\x4a\x5 \x6 {a, a \x7 1,  . . .})
in another file.

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[jira] Updated: (PDFBOX-756) Some characters from TeX-created files are mapped into ASCII range 1-31

Posted by "Thomas Fischer (JIRA)" <ji...@apache.org>.

     [ https://issues.apache.org/jira/browse/PDFBOX-756?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Fischer updated PDFBOX-756:
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    Attachment: 826130.pdf
                826130.txt

> Some characters from TeX-created files are mapped into ASCII range 1-31
> -----------------------------------------------------------------------
>
>                 Key: PDFBOX-756
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-756
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Text extraction
>    Affects Versions: 1.2.0
>         Environment: Mac OS X 10.6.4
>            Reporter: Thomas Fischer
>            Priority: Minor
>         Attachments: 826130.pdf, 826130.txt
>
>
> For some TeX-created files, some characters are mapped to low ASCII values. Example:
> fx  2y − fx − 2y 
> instead of
> (x + 2y) - f(x − 2y) =
> With the non-printable characters denote by \xN, PDFBox's result is
> f\x3x\x4 2y\x5 − f\x3x − 2y\x5 \x6
> This probably cannot be fixed, since in another file the same numbers represent different characters:
> Za  {a, a  1, . . .}
> instead of
> Z(a) = {a, a + 1,...}
> (Z\x4a\x5 \x6 {a, a \x7 1,  . . .})
> in another file.

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