Description of Problem:

Even when mozilla pretends to use 'plugger' plugin then whatever is
given in /etc/pluggerrc seems to be just silently ignored. To wit:
I have the following script which I would like to use to display
dvi files:

#!/bin/sh

# view dvi files via Postscript
# Michal Jaegermann, michal@harddata.com
# 2002-Apr-2
# 2002-Oct-21 - assorted updates

me=$(basename $0)
usage () {
    echo "usage: $me [options_for_viewer] [ -- ]  dvi_file_to_view [ file ... ]"
    exit 1
}

while [ $# -gt 1 ] ; do
    if [ "$1" = '--' ] ; then
	shift
	break 
    fi
    vopts="$vopts $1"
    shift
done
[ "$1" = '--' ] && shift

[ $# -ne 0 ] || usage
if DP=$(\which --skip-alias gv 2>/dev/null) ; then
    DP="$DP -safer -quiet"
    ps=yes
elif DP=$(\which --skip-alias ggv 2>/dev/null) ; then
    DP="$DP --notoolbar"
    ps=y
elif DP=(\which --skip-alias xdvi 2>/dev/null) ; then
    DP="$DP -safer -hush"
else
    exit 1
fi

if ! tmpdir=$(mktemp -d /tmp/${me}XXXXXX) ; then
    echo "$me:  cannot create temporary directory"
fi

trap "rm -rf $tmpdir; exit 1" 1 2 3 9 15

while [ "$1" ] ; do
    if [ "ps" = "" ] ; then
	$DP $vopts "$oname"
	continue
    fi
    oname=$tmpdir/"$(basename $1)"
    oname="${oname%.dvi}.ps"
    if dvips -Pcmz -o "$oname" "$1" >/dev/null 2>&1 ; then
	$DP $vopts "$oname" || :
    fi
    rm -f "$oname"
    # a hack for deranged web browsers spilling junk in /tmp
    case $1 in
	/tmp/*.exe) rm -f $1 ;;
    esac
    shift
done
rm -rf $tmpdir
exit 0

To see what all of this about try that on few .dvi files for which bitmap
fonts were _not_ yet created and you see why this is attractive.

After putting in /etc/pluggerc this:

application/x-dvi: dvi: DVI file
        repeat swallow(gv) fill: dvidocviews -geometry +9000+9000 "$file"

this does what it seems to imply in Netscape and is just ignored by
Mozilla.  It is also ignored by Galeon but there I can at least set
a helper application to my script but mozilla insists on using xdvi
with bitmap fonts no matter what.