Nick Burch created TIKA-2554:
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Summary: Subtypes for common text formats currently included in
text/plain
Key: TIKA-2554
URL: https://issues.apache.org/jira/browse/TIKA-2554
Project: Tika
Issue Type: Improvement
Components: mime
Affects Versions: 1.17
Reporter: Nick Burch
Currently, we have a very large number of file extension globs all feeding into
the {{text/plain}} mimetype. This includes not only variations on actual plain
text, but also lots of other text-based formats (eg config or makefile/autoconf
files). This list dates back quite a while (TIKA-85 seems to have added most of
them)
While this simplifies things in Tika, it has the downside of making it very
tricky for people to add custom parsers for these text-based formats (eg
[https://stackoverflow.com/questions/48411421/define-a-mime-type-for-txt-files-for-tika]
where they want to handle .cfg differently to other .txt)
Because of how {{AutoDetectParser}} works, as long as there's no more specific
parser defined, if we create some new {{text/}} subtypes which extend
{{text/plain}} then there won't be any change in parsing behaviour. The only
change would be for detection, where a more specific type would be returned
I therefore propose that we pull some of these (file-magic-less) globs out into
other {{text/}} mimetypes with a parent of {{text/plan}} , grouped roughly by
type
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