expr precedence printing error

[vtjnash]

:(a & (b&&c)) is different from :(a&b && c) (see dump(Expr)), but prints the same:

julia> :(a&b && c)
:(a & b && c)

julia> :((a&b) && c)
:(a & b && c)

julia> :(a& (b && c))
:(a & b && c)

julia> dump(:(a& (b && c)))
Expr 
  head: Symbol call
  args: Array(Any,(3,))
    1: Symbol &
    2: Symbol a
    3: Expr 
      head: Symbol &&
      args: Array(Any,(2,))
        1: Symbol b
        2: Symbol c
      typ: Any
  typ: Any

julia> dump(:(a&b && c))
Expr 
  head: Symbol &&
  args: Array(Any,(2,))
    1: Expr 
      head: Symbol call
      args: Array(Any,(3,))
        1: Symbol &
        2: Symbol a
        3: Symbol b
      typ: Any
    2: Symbol c
  typ: Any