Move to MBScene._make_layers_integral() - Old MBScene.parseScene()/create_framelines()/update_framelines() is too fragile and inefficiently. - MBScene._make_layers_integral() is more robust that - separate logic into removing layer group nodes and adding layer group nodes - refactory code of create framelines and layers into methods - it make logic into layers - framelines and layers are incremental updated to avoid overhead of creating/destroying all framelines and layer objects.

#!/bin/bash

HEADER="#MadBuilder Configuration#"
FOOTER="#End of MadBuilder Configuration#"
RC=/etc/mozpluggerrc

CONTAIN=`grep "$HEADER" $RC`

if [  -z "$CONTAIN" ]
then
cat <<EOF >> $RC

$HEADER
application/x-mbsvg:mbsvg: MadButterfly SVG
        swallow(Inkscape) : /usr/share/madbutterfly/inkscape/usr/bin/helper_mb.py "\$file"
application/x-h:h: MadButterfly SVG h program
	swallow(gedit) : gedit "\$file"
$FOOTER

EOF
echo Configuration installed to $RC
fi