tests/prec.right

   1 `Say' echos its argument. Its return value is of no interest.
   2 `Truth' echos its argument and returns a TRUE result.
   3 `False' echos its argument and returns a FALSE result.
   4
   5   Truth 1 && Truth 2   || Say 3   output=12
   6 ( Truth 1 && Truth 2 ) || Say 3   output=12
   7
   8   Truth 1 && False 2   || Say 3   output=123
   9 ( Truth 1 && False 2 ) || Say 3   output=123
  10
  11   False 1 && Truth 2   || Say 3   output=13
  12 ( False 1 && Truth 2 ) || Say 3   output=13
  13
  14   False 1 && False 2   || Say 3   output=13
  15 ( False 1 && False 2 ) || Say 3   output=13
  16
  17 Truth 1 ||   Truth 2 && Say 3     output=13
  18 Truth 1 || ( Truth 2 && Say 3 )   output=1
  19
  20 Truth 1 ||   False 2 && Say 3     output=13
  21 Truth 1 || ( False 2 && Say 3 )   output=1
  22
  23 False 1 ||   Truth 2 && Say 3     output=123
  24 False 1 || ( Truth 2 && Say 3 )   output=123
  25
  26 False 1 ||   False 2 && Say 3     output=12
  27 False 1 || ( False 2 && Say 3 )   output=12
  28