Open MBZ files as .tar.gz files
# Add this file to ~/.local/share/mime/packages
# Run: update-mime-database ~/.local/share/mime
<?xml version="1.0" encoding="UTF-8"?>
<mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
<mime-type type="application/x-compressed-tar">
<glob pattern="*.mbz"/>
</mime-type>
</mime-info>