Run a program with focus_new set to on, then turn focus_new off again

with-focus

#!/bin/bash

# Usage:
#   chmod +x with-focus
#   ./with-focus CMD ARG1 ARG2
# e.g.
#   ./with-focus xfce4-terminal
#   ./with-focus mousepad file.txt

# When this script exits, turn focus_new back to false
trap 'xfconf-query -c xfwm4 -p /general/focus_new -s false' EXIT

curwindow=$(xprop -root _NET_ACTIVE_WINDOW)

# Temporarily set focus_new true:
xfconf-query -c xfwm4 -p /general/focus_new -s true

# Run whatever program was given, in the background so we can exit and it will
# keep going:
"$@" & disown

# Keep this script running until the current window id changes (new window has
# focus).
while [[ "${curwindow}" = "$(xprop -root _NET_ACTIVE_WINDOW)" ]]; do
    sleep 0.3
done