export LD_PRELOAD _RLD_LIST DYLD_INSERT_LIBRARIES
fi
-cmd="$1${EXE_EXT}"
+cmd="$1"; [ -x "$cmd" ] || cmd="$cmd${EXE_EXT}"
shift
-exec "$cmd" "$@"
+if [ $# -eq 0 ]; then
+ exec "$cmd" # old sh, such as Tru64 4.x, fails to expand empty "$@"
+else
+ exec "$cmd" "$@"
+fi