Style suggestion: Don't treat not as a special case.

[polytypic]

Current formatting (tested with version 0.27.0) treats the not operation differently from other unary functions in some contexts:

let foo () = bax (bay ()) && baz ()
let foo () = (not (bay ())) && baz ()

What I'd prefer is to not treat not as a special case:

let foo () = bax (bay ()) && baz ()
let foo () = not (bay ()) && baz ()

I just don't find this more difficult to read.

To me the extra parentheses in (not x) && y just appear noisy.

[v-gb]

As a random user, I agree. ocamlformat's choice is highly unconventional, in that I have never seen anyone write such parens even once, nor any confusion resulting from the lack of parens.

[hhugo]

I think the special handling was requested by @mshinwell at some point

[hhugo]

see #266 (comment)

[hhugo]

and some discussion in #686