Show the parenthesized version of an expression

[asarkar]

Is your feature request related to a problem? Please describe.

The expression:

lexeme $ (:) <$> between '2' '9' <*> M.count 2 $ between '0' '9'

is evaluated as:

lexeme (((:) <$> between '2' '9' <*> M.count 2) (between '0' '9'))

because $ has lower precedence than <$> and <*>.

The intent is for the expression to be evaluated as:

lexeme $ (:) <$> between '2' '9' <*> M.count 2 (between '0' '9')

Describe the solution you'd like

To avoid these kind of errors, it will be very helpful to be able to see the parenthesized version of an expression.

Describe alternatives you've considered

An alternative is to aggressively parenthesize everything. That won't look pretty.
Another is to look up the precedence of each operator used in the expression. It can be time consuming for a complex expression.

Additional context
Originally discussed in this Reddit thread.

[July541]

We have a working ticket to show fixity explicitly at #2973.

[July541]

Close this because #2941 had merged, feel free to reopen this if you have new thoughts.