Open gvim in same window when on same "desktop"

xvim

#!/bin/bash

this=$(basename $0); # vim|gvim|rvim etc...
desktop=desktop_$(xprop -root -notype  _NET_CURRENT_DESKTOP | perl -pe 's/.*?= (\d+)/$1/')
number_desktop=$(xprop -root -notype  _NET_NUMBER_OF_DESKTOPS | perl -pe 's/.*?= (\d+)/$1/')
viewport=viewport_$(xprop -root -notype _NET_DESKTOP_VIEWPORT | perl -pe 's/.*?= (\d+), (\d+)/$1x$2/')

if [ $number_desktop = 1 ]; then
    desktop=$viewport;
fi
if [ $# != 0 ]; then
	exec /usr/bin/$this --servername $desktop --remote-tab-silent "$@"
elif ! vim --serverlist | grep -iq $desktop; then
	exec /usr/bin/$this --servername $desktop
fi