+ save_background_pid
+fi
+
+# Set color temperature of display according to time of day.
+if installed redshift; then
+ redshift -l 49.9:10.9 -t 5500:4500 >/dev/null &
+fi
+
+# Automatically lock the screen after x minutes of inactivity if
+# `xscreensaver` or `xautolock` is available. Warn if no locker was found.
+if installed xscreensaver; then
+ xscreensaver &
+elif installed xautolock; then
+ if installed "$screen_locker"; then
+ xautolock -secure -time "$screen_lock_time" -locker "$screen_locker" &
+ else
+ error "Locker '$screen_locker' not installed. Auto lock won't work!"
+ fi
+elif test -n "$screen_lock_force"; then
+ error "'xautolock' not found. Auto lock won't work!"
+fi
+
+# Use compton to get transparent windows. See ~/.Xresources for configuration
+# of urxvt.
+if installed compton; then
+ compton &
+# xcompmgr as fallback.
+elif installed xcompmgr; then
+ xcompmgr &