The xml file for mimetype image/vnd.djvu could be improved
by adding the following magic information, aliases, and glob patterns.

<?xml version="1.0"?>
<mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
  <mime-type type="image/vnd.djvu">
   <alias type="image/x.djvu"/>
   <alias type="image/x-djvu"/>
   <glob pattern="*.djvu"/>
   <glob pattern="*.djv"/>
   <magic priority="50">
     <match type="string" offset="0" value="AT&amp;TFORM">
       <match type="string" offset="12" value="DJVM"/>
       <match type="string" offset="12" value="DJVU"/>
     </match>
     <match type="string" offset="0" value="FORM">
       <match type="string" offset="8" value="DJVM"/>
       <match type="string" offset="8" value="DJVU"/>
     </match>
   </magic>

In fact the djvulibre project distributes its own xml file
which sometimes conflicts with the one bundled with shared-mime-info.
Since image/vnd.djvu is an official mime type, best
would be to correct it in shared-mime-info and
to remove it from djvulibre.

See also http://sourceforge.net/tracker/index.php?func=detail&aid=1856879&group_id=32953&atid=406583
http://djvu.cvs.sourceforge.net/djvu/djvulibre-3.5/desktopfiles/djvulibre-mime.xml

Thanks.

- L.