File type determiner parses mp3, other media files and returns "plain text document"

[Delan Azabani]

Ubuntu's file type determiner parses mp3, other media files and returns "plain text document". This means that:
- it will open with the associated editor for plain text documents, i.e. gedit
- changing the default association from the Properties dialog to Totem will change association for text files too
- you can't do the mouse-over audio preview trick in desktop/nautilus as it's supposedly "only for audio files".

Ubuntu Karmic Beta
GNOME 2.28.0

[Delan Azabani (azabani)]

Note: file type determiner also classifies other files, like PNG files and MIDI files as text files.
Some of my H.264/AVC mp4 files are unthumbnailed, "text files", while three of them are recognized and thumbnailed.

[Philip Muškovac (yofel)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 444962, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.

[Jacques L. (asdfgerv)]

Confirmed since the latest shared-mime-info update in karmic.
Every single file is identified as text/plain.

(The bug seems to be in the mime database since it can also be observed with the xdg-open command)

[Nikolai Mouraviev (kolyamouraviev)]

Like previous poster, can confirm since the latest shared-mime-info update in Karmic.

Every single file is identified as text/plain.

Easily fixed with:

sudo update-mime-database /usr/share/mime
sudo update-desktop-database