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https://issues.apache.org/jira/browse/TIKA-2422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16076416#comment-16076416
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ASF GitHub Bot commented on TIKA-2422:
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sebastian-nagel commented on issue #190: TIKA-2422 -- improve detection of
Graphviz *.dot format
URL: https://github.com/apache/tika/pull/190#issuecomment-313378665
Ok, unit test added. After testing a couple of .dot files: allowed C++-style
comments before (di)graph magic keyword.
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> Improve detection of Graphviz *.dot format
> ------------------------------------------
>
> Key: TIKA-2422
> URL: https://issues.apache.org/jira/browse/TIKA-2422
> Project: Tika
> Issue Type: Improvement
> Components: detector, mime
> Reporter: Sebastian Nagel
> Priority: Minor
>
> Detection of Graphviz document formats could be improved by adding
> - either *.dot as glob pattern (conflicts with the more frequent MSWord
> templates)
> - a magic pattern which catches the [.dot
> language|http://www.graphviz.org/content/dot-language] grammar, eg.
> {{^\s*(?:strict\s+)?(?:di)?graph\b}}
> Seen with Common Crawl data (see also discussions on
> [user@tika|https://lists.apache.org/thread.html/1e4f4b6c249618a446f2e92f56ef90e6bfa0dfe51ce10197461df3d9@%3Cuser.tika.apache.org%3E]
> and
> [dev@poi|https://lists.apache.org/thread.html/7e0c25a389a03011eabce81e933f17a6093390138f4890fa77c36a59@%3Cdev.poi.apache.org%3E]):
> web server sends "text/vnd.graphviz" (often wrong) and Tika detects
> "application/msword" (sometimes wrong), see [WARC
> file|https://commoncrawl-dev.s3.amazonaws.com/tika-content-type-detection/test/tika_dot_graphviz_msword.warc.gz]).
>
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