ts5:=T("foo100bar99baz0.txt", "foo100bar10baz0.txt", "foo1000bar99baz10.txt",
       "foo1000bar99baz9.txt");
fsort(ts5).println();

x:=T("x9y99","foo10.txt","x10y0","foo9.txt","x9y100");
fsort(x).println();