[wp-trac] [WordPress Trac] #45615: CSV Mime Type fails upload

[WordPress Trac]

#45615: CSV Mime Type fails upload
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 Reporter:  Kloon                     |       Owner:  joemcgill
     Type:  defect (bug)              |      Status:  assigned
 Priority:  normal                    |   Milestone:  5.0.3
Component:  Upload                    |     Version:  5.0.1
 Severity:  normal                    |  Resolution:
 Keywords:  has-patch has-unit-tests  |     Focuses:
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Comment (by tellyworth):

 attachment:45615.3.diff includes a mildly hacky fix for a few file types
 like CSV that are often misidentified by fileinfo as `text/plain`.

 It also includes a test and partial fix for #45633 - when coupled with the
 patch on that ticket I believe it should be fixed also. (The patch on that
 ticket alone did not fix the problem in my testing, see the unit tests in
 this diff).

 This does not fix other file types that have been reported as problematic,
 like aac and fonts. I haven't yet been able to reproduce those, most
 likely because I don't have sample files that are specific enough. A
 similar approach to the `text/plain` fix might work for those, but **we
 need sample files** in order to test.

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Ticket URL: <https://core.trac.wordpress.org/ticket/45615#comment:34>
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