case expressions

[ghost]

The style guide doesn't yet describe how to align case expressions.

[tibbe]

Do you mean how you align the arrows?

[ghost]

I mean how deep to indent the cases of the case expression.

For instance:

 foobar = function $ case something of
     Just j -> foo
     Nothing -> bar

or

 foobar = function $ case something of
              Just j -> foo
              Nothing -> bar

or

 foobar = function $ case something of
                         Just j -> foo
                         Nothing -> bar

or

 foobar = function $ case something of
                          Just j -> foo
                          Nothing -> bar