t / t4034 / ada / poston commit Sync with v1.8.1.4 (b3600c3)
   1Ada.Text_IO.Put_Line("Hello World?");
   21 1e10 16#FE12#E2 3.141_592 'y'
   3x+y x-y
   4x*y x/y
   5x**y
   6x(y)
   7x:=y
   8x=y x/= y
   9x<y x<=y x>y x>=y
  10x,y
  11x=>y
  12x..y
  13x<>y