if test -z "$XDG_DATA_DIRS"; then
   XDG_DATA_DIRS="/usr/share:/usr/local/share"
   [ -e /usr/bin/kde4-config ] && KDE4_PREFIX=`/usr/bin/kde4-config --prefix`
   if [ "$KDE4_PREFIX" ]; then
      if [ "${DESKTOP_SESSION:0:3}" = "kde" ]; then
         XDG_DATA_DIRS="$KDE4_PREFIX/share:$XDG_DATA_DIRS"
      else
         XDG_DATA_DIRS="$XDG_DATA_DIRS:$KDE4_PREFIX/share"
      fi
   fi
   [ -e /opt/kde3/share/applications ] && XDG_DATA_DIRS="$XDG_DATA_DIRS:/opt/kde3/share"
   export XDG_DATA_DIRS
fi
if [ "$DESKTOP_SESSION" = "gnome" ]; then
   XDG_MENU_PREFIX="gnome-"
   export XDG_MENU_PREFIX
fi