@@ -187,23 +187,41 @@ function fgfs () {

                 fi

                 local airport_data="$scenes_dir/Airports/$candidate_airport[1]:u/$candidate_airport[2]:u/$candidate_airport[3]:u/${candidate_airport:u}"

-                if [[ -a "${airport_data}.threshold.xml" ]]; then

+                if ! test -r "${airport_data}.threshold.xml"; then

+                    echo "airport ${candidate_airport:u} not found !"

+                fi

+

+                if test -n "$candidate_parking" && test "$candidate_parking" = '?'; then

+                    if test -r "${airport_data}.groundnet.xml"; then

+                        echo "Parkings ${candidate_airport:u}:"

+                        sed -rn "/<parkingList/,/parkingList>/s/^.* name=\"([^\"]+).*$/\1/p" "${airport_data}.groundnet.xml"

+                    else

+                        echo "no information for parkings available on ${candidate_airport:u}"

+                    fi

+                    return

+                elif test -n "$candidate_runway" && test "$candidate_runway" = '?'; then

+                    if test -r "${airport_data}.threshold.xml"; then

+                        echo "Runways ${candidate_airport:u}:"

+                        sed -rn 's|^.*<rwy>(.+)</rwy>.*$|\1|p' "${airport_data}.threshold.xml"

+                    else

+                        echo "no information for runways available on ${candidate_airport:u}"

+                    fi

+                    return

+                fi

+

+                if test -r "${airport_data}.threshold.xml"; then

                     fgfs_args+=(--airport=$candidate_airport)

                     if [[ -a "${airport_data}.groundnet.xml" && -n "$candidate_parking" ]]; then

-                        if test $candidate_parking = '?'; then

-                          echo "Parkings ${candidate_airport:u}:"

-                          sed -rn "/<parkingList/,/parkingList>/s/^.* name=\"([^\"]+).*$/\1/p" ${airport_data}.groundnet.xml

-                          return

-                        elif sed -rn "/<parkingList/,/parkingList>/p" ${airport_data}.groundnet.xml | grep -q "name=\"${candidate_parking}\""; then

+                        if sed -rn "/<parkingList/,/parkingList>/p" "${airport_data}.groundnet.xml" | grep -q "name=\"${candidate_parking}\""; then

                             fgfs_args+=("--parkpos='$candidate_parking'")

+                        else

+                            echo "$candidate_parking isn't a valid parking position"

                         fi

                     elif test -n "$candidate_runway"; then

-                        if test $candidate_runway = '?'; then

-                            echo "Runways ${candidate_airport:u}:"

-                            sed -rn 's|^.*<rwy>(.+)</rwy>.*$|\1|p' ${airport_data}.threshold.xml

-                            return

-                        elif grep -q "<rwy>${candidate_runway}</rwy>" ${airport_data}.threshold.xml; then

+                        if grep -q "<rwy>${candidate_runway}</rwy>" "${airport_data}.threshold.xml"; then

                             fgfs_args+=("--runway=$candidate_runway")

+                        else

+                            echo "$candidate_runway isn't a valid runway"

                         fi

                     fi

                 fi