Postfix operator precedence
I want to define a postfix operator $- that feeds a default argument (obtained from a typeclass) to a given function. However, I would like to be able to write things like (f $ g $ h $-) for (f (g (h (defaultArg)))). This is not allowed, as $ has precedence 0 and $- is required to have lower precedence, which is impossible. I think it would be sensible if $- was required to have precedence at most infixr 0 (which is the precedence of $).