gistfile1.sh

#!/bin/sh

# get id
win=$(xdotool search --onlyvisible --class emacs)

if [ "x$win" = x ]; then
    # start
    ~/.bin/compiz-send vpswitch switch_to_2_key
    exec emacs
else
    if [ $win = $(xdotool getwindowfocus) ]; then
        # send it a key
        xdotool key --window $win --clearmodifiers F3
    else
        # switch to it
        ~/.bin/compiz-send vpswitch switch_to_2_key
        #xdotool windowactivate $win
    fi
fi