Bug 1301133 - Incorrect mime type detection for file
Summary: Incorrect mime type detection for file
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: glib2
Version: 23
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Matthias Clasen
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-01-22 17:10 UTC by Jonathan Underwood
Modified: 2016-12-20 18:05 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-12-20 18:05:03 UTC
Type: Bug
Embargoed:


Attachments (Terms of Use)
Example mime type definition (398 bytes, application/xml)
2016-01-22 17:10 UTC, Jonathan Underwood
no flags Details


Links
System ID Private Priority Status Summary Last Updated
GNOME Bugzilla 760997 0 None None None Never

Description Jonathan Underwood 2016-01-22 17:10:55 UTC
Created attachment 1117307 [details]
Example mime type definition

Description of problem:

1. Install the attached mime type xml file under /usr/share/mime/packages

2. Change the mathematica section of /usr/share/mime/packages/freedesktop.org.xml to have a lower weight and priority ie.:

<glob weight="30" pattern="*.nb"/>

and 

<magic priority="30">

3. Run update-mime-database /usr/share/mime

4. At this point, the definition in application-vnd.wolfram.nb.xml should be having priority over the one in freedesktop.org.xml for files with the extension .nb, and so the mimetype should be detected as application/vnd.wolfram.nb rather than application/mathematica

5. However:

$ xdg-mime query filetype junk.nb 
application/mathematica

$ gvfs-info junk.nb
display name: junk.nb
edit name: junk.nb
name: junk.nb
type: regular
size:  4
uri: file:///home/jgu/tmp/junk.nb
attributes:
  standard::type: 1
  standard::name: junk.nb
  standard::display-name: junk.nb
  standard::edit-name: junk.nb
  standard::copy-name: junk.nb
  standard::icon: application-mathematica, x-office-document
  standard::content-type: application/mathematica
  standard::fast-content-type: application/vnd.wolfram.nb


$ mimetype junk.nb
junk.nb: application/vnd.wolfram.nb

$ kmimetypefinder junk.nb
application/vnd.wolfram.nb
(accuracy 100)


So, gvfs is getting it wrong. mimetype and kmimetypefinder are getting it right.




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Comment 1 Jonathan Underwood 2016-01-22 17:12:03 UTC
Meant to mention, this is with gvfs-1.26.2-1.fc23.x86_64

Comment 2 Jonathan Underwood 2016-01-22 19:27:25 UTC
Reassigning to glib, as I think this must be a bug in the weight handling in xdgmimecache.c

Comment 3 Fedora End Of Life 2016-11-24 15:07:14 UTC
This message is a reminder that Fedora 23 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 23. It is Fedora's policy to close all
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Comment 4 Fedora End Of Life 2016-12-20 18:05:03 UTC
Fedora 23 changed to end-of-life (EOL) status on 2016-12-20. Fedora 23 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

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