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

["ASF subversion and git services (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PDFBOX-756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17075825#comment-17075825 ] 

ASF subversion and git services commented on PDFBOX-756:
--------------------------------------------------------

Commit 1876152 from lehmi@apache.org in branch 'pdfbox/trunk'
[ https://svn.apache.org/r1876152 ]

PDFBOX-756: added some missing tex based charname mappings

> 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, 2.0.19, 3.0.0 PDFBox
>         Environment: Mac OS X 10.6.4
>            Reporter: Thomas Fischer
>            Assignee: Andreas Lehmkühler
>            Priority: Minor
>             Fix For: 2.0.20, 3.0.0 PDFBox
>
>         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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