diff --git a/scripts/tools/fg-completion.bash b/scripts/tools/fg-completion.bash
new file mode 100755
index 000000000..f4cc6b205
--- /dev/null
+++ b/scripts/tools/fg-completion.bash
@@ -0,0 +1,296 @@
+#!/bin/bash
+# Tab completion for FlightGear command line options.
+#
+# 1. define $FG_HOME (or accept the default "$HOME/.fgfs/")
+#
+# 2. run this script to build the $FG_HOME/aircraft.list file and repeat this
+#    step whenever you added an aircraft (or maintain the aircraft list manually):
+#
+#      $ $FG_HOME/fg-completion.bash
+#
+#
+# 3. source this file from your ~/.bashrc:
+#
+#      [ -e $FG_HOME/fg-completion.bash ] && source $FG_HOME/fg-completion.bash
+#
+__fgfs_scriptname="fg-completion.bash"  # adapt this if you renamed this script!
+
+__fgfs_root=${FG_ROOT:-/usr/local/share/FlightGear}
+__fgfs_home=${FG_HOME:-$HOME/.fgfs}
+[ -d "$__fgfs_home" ] || mkdir -p "$__fgfs_home"
+
+__fgfs_ac_list="$__fgfs_home/aircraft.list"
+__fgfs_apt_list="$__fgfs_home/airport.list"
+
+__fgfs_options="
+	--help
+	--verbose
+	--disable-intro-music
+	--enable-intro-music
+	--units-feet
+	--units-meters
+	--disable-sound
+	--enable-sound
+	--disable-panel
+	--enable-panel
+	--disable-hud
+	--enable-hud
+	--disable-anti-alias-hud
+	--enable-anti-alias-hud
+	--disable-hud-3d
+	--enable-hud-3d
+	--hud-tris
+	--hud-culled
+	--disable-random-objects
+	--enable-random-objects
+	--disable-ai-models
+	--enable-ai-models
+	--disable-freeze
+	--enable-freeze
+	--disable-fuel-freeze
+	--enable-fuel-freeze
+	--disable-clock-freeze
+	--enable-clock-freeze
+	--disable-splash-screen
+	--enable-splash-screen
+	--disable-mouse-pointer
+	--enable-mouse-pointer
+	--fog-disable
+	--fog-fastest
+	--fog-nicest
+	--disable-enhanced-lighting
+	--enable-enhanced-lighting
+	--disable-distance-attenuation
+	--enable-distance-attenuation
+	--disable-specular-highlight
+	--enable-specular-highlight
+	--disable-fullscreen
+	--enable-fullscreen
+	--disable-game-mode
+	--enable-game-mode
+	--shading-flat
+	--shading-smooth
+	--disable-skyblend
+	--enable-skyblend
+	--disable-textures
+	--enable-textures
+	--disable-wireframe
+	--enable-wireframe
+	--notrim
+	--on-ground
+	--in-air
+	--enable-auto-coordination
+	--disable-auto-coordination
+	--show-aircraft
+	--time-match-real
+	--time-match-local
+	--disable-real-weather-fetch
+	--enable-real-weather-fetch
+	--disable-horizon-effect
+	--enable-horizon-effect
+	--enable-clouds
+	--disable-clouds
+	--enable-clouds3d
+	--disable-clouds3d
+	--atc610x
+	--enable-save-on-exit
+	--disable-save-on-exit
+	--ai-scenario=
+	--fg-root=
+	--fg-scenery=
+	--language=
+	--control=
+	--browser-app=
+	--config=
+	--failure=
+	--bpp=
+	--fov=
+	--callsign=
+	--aspect-ratio-multiplier=
+	--geometry=
+	--view-offset=
+	--aircraft=
+	--min-status=
+	--fdm=
+	--aero=
+	--model-hz=
+	--speed=
+	--aircraft-dir=
+	--timeofday=
+	--time-offset=
+	--start-date-sys=
+	--start-date-gmt=
+	--start-date-lat=
+	--airport=
+	--runway=
+	--carrier=
+	--parkpos=
+	--vor=
+	--ndb=
+	--fix=
+	--offset-distance=
+	--offset-azimuth=
+	--lon=
+	--lat=
+	--altitude=
+	--heading=
+	--roll=
+	--pitch=
+	--uBody=
+	--vBody=
+	--wBody=
+	--vc=
+	--mach=
+	--glideslope=
+	--roc=
+	--wp=
+	--flight-plan=
+	--nav1=
+	--nav2=
+	--adf=
+	--dme=
+	--visibility=
+	--visibility-miles=
+	--wind=
+	--turbulence=
+	--ceiling=
+	--multiplay=
+	--proxy=
+	--httpd=
+	--telnet=
+	--jpg-httpd=
+	--generic=
+	--garmin=
+	--joyclient=
+	--jsclient=
+	--native-ctrls=
+	--native-fdm=
+	--native=
+	--nmea=
+	--opengc=
+	--props=
+	--pve=
+	--ray=
+	--rul=
+	--log-level=
+	--trace-read=
+	--trace-write=
+	--season=
+	--vehicle=
+	--prop:
+"
+
+
+if [ ${BASH_VERSINFO[0]} -eq 2 ] && [[ ${BASH_VERSINFO[1]} = "05b" ]] \
+		|| [ ${BASH_VERSINFO[0]} -gt 2 ]; then
+	__fgfs_nospace="-o nospace"
+fi
+
+shopt -s progcomp
+
+
+__fgfs_make_ac_list() {
+	ls $__fgfs_root/Aircraft/*/*-set.xml|
+		while read i; do
+			i=${i##*/}
+			echo "${i%-set.xml} "
+		done >"$__fgfs_ac_list"
+}
+
+
+if [ "${0##*/}" == "$__fgfs_scriptname" ]; then  # run explicitly -- not sourced
+	echo "creating list of available aircraft: $__fgfs_ac_list"
+	__fgfs_make_ac_list
+	exit 0
+fi
+
+
+if [ ! -e "$__fgfs_ac_list" ]; then
+	echo "$0: creating list of available aircraft: $__fgfs_ac_list"
+	__fgfs_make_ac_list
+fi
+
+
+__fgfs_ai_scenario() {
+	local i
+	for i in $__fgfs_root/AI/*.xml; do
+		i=${i%.xml}
+		echo ${i##*/}
+	done
+}
+
+
+__fgfs_offer() {
+	local i
+	for i in "$@"; do
+		[ "$i" == "${i%=}" ] && i="$i "
+		echo "$i"
+	done
+}
+
+
+__fgfs_options=$(__fgfs_offer $__fgfs_options)
+
+
+__fgfs() {
+	COMPREPLY=()
+	local IFS=$'\n'$'\t' cur=${COMP_WORDS[COMP_CWORD]} alt
+
+	case "$cur" in
+	--ai-scenario=*)
+		alt=$(__fgfs_offer $(__fgfs_ai_scenario))
+		;;
+	--aircraft=*|--vehicle=*)
+		alt=$(cat "$__fgfs_ac_list")
+		;;
+	--airport=*)
+		if [ -e "$__fgfs_apt_list" ]; then
+			alt=$(cat "$__fgfs_apt_list")
+		else
+			alt=$(__fgfs_offer khaf kpao koak kmry knuq ksjc kccr ksns krhv klvk o62 lpma)
+		fi
+		;;
+	--carrier=*)
+		alt=$(__fgfs_offer Nimitz Eisenhower Foch)
+		;;
+	--control=*)
+		alt=$(__fgfs_offer joystick keyboard mouse)
+		;;
+	--failure=*)
+		alt=$(__fgfs_offer pitot static vacuum electrical)
+		;;
+	--fdm=*)
+		alt=$(__fgfs_offer jsbsim yasim uiuc larcsim ufo magic)
+		;;
+	--geometry=*)
+		atl=$(__fgfs_offer 640x480 800x600 1024x768 1152x864 1600x1200)
+		;;
+	--log-level=*)
+		alt=$(__fgfs_offer bulk debug info warn alert)
+		;;
+	--min-status=*)
+		alt=$(__fgfs_offer alpha beta early-production production)
+		;;
+	--parkpos=*)
+		alt=$(__fgfs_offer cat-1 cat-2 cat-3 cat-4 park-1)
+		;;
+	--season=*)
+		alt=$(__fgfs_offer summer winter)
+		;;
+	--timeofday=*)
+		alt=$(__fgfs_offer real dawn morning noon afternoon dusk evening midnight)
+		;;
+	--prop:*)
+		return
+		;;
+	*)
+		alt="$__fgfs_options"
+		;;
+	esac
+
+	COMPREPLY=($(compgen -W "$alt" -- ${cur#*=}))
+}
+
+
+complete -o default $__fgfs_nospace -F __fgfs fgfs signs fgfsterra
+