Bug 7852

There are two problems with the entry for Java Archive (.jar files).

First, the mime-type is incorrectly named.  The mime-type was specified many
years ago as x-java-archive. See:
  http://java.sun.com/products/javawebstart/1.2/docs/downloadservletguide.html
The freedesktop.org.xml file somehow has contrived the x-jar mimetype.

I don't know of a mechanism in the mime mechanism to do a form of compatibility.
Perhaps there is some form of alias mechanism where the preferred mime type is
used to look for a registered application and if that fails the aliases are
tried in order.

I'm setting the priority as P1 as it seems that the longer this goes unaddressed
the greater the impact of change will be.  Of course, this may be adjusted by
the responsible engineer.

The second problem is that without a suffix, the current entry can't tell a .jar
file from a .zip file.  The following proposed entry (with i18n entries not
included) would address that issue.

<?xml version="1.0" encoding="UTF-8"?>
<mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
  <mime-type type="application/x-java-archive">
    <comment>Java Archive</comment>
    <glob pattern="*.jar"/>
    <magic priority="85">
      <match type="string" value="PK\003\004" offset="0">
        match type="host16" value="0xcafe" offset="40" />
      </match>
    </magic>
  </mime-type>
</mime-info>