rescript@11.0.0-alpha.2 Formatter removes brackets that breaks compiler

[DZakh]

I'm trying to update rescript-struct, and it compiled with rescript@11.0.0-alpha.2 without a problem, but after running rescript format -all, it removed some brackets from the code, which broke the compiler. Here is the commit with removed brackets DZakh/sury@0bad028

[cristianoc]

Thanks for the report. Can you add a self-contained example?

[DZakh]

Looks like the issue only with functions using (.)
https://rescript-lang.org/try?version=v10.1.2&code=DYUwLgBAZgdhC8EAUBKAXMpA6CBXGAlmCggHx6HFnI6onzmoBQTokAhhgE4gDOuwMAB5sFIvXK8wXAjADmAGjFhyiJKLrUARFAD2urSgC0pAPIBrFmwgAjbnwHDU1KTPlL8RVZgkQd+wxMLFgB6EIgAMV0uAFt2MBAAEwhZMF00JjCIa1gEZHQaZV9PSAZCzTLmMMzw604IHn5BERwS31dZRWVvDRRffwMgy2qs6zsGh2aSl2lOj0oe5zKBwLNLJiA

[DZakh]

Looks like the issue only with functions using (.)

Or with "uncurried": true in bsconig.

[cristianoc]

let foo = (. ()) => ()
let fn = (_x): ((. unit) => unit) => foo
let fooC = () => ()
let fnC = (_x): ((unit) => unit) => fooC

parens in ret type annotation of fn, but not fnC, are not printed in pretty printing

[cristianoc]

let a = ((. ()) => "foo")->Ok
let aC = (() => "foo")->Ok

The parens are not printed in a but are printed in aC.

[DZakh]

Yes, but:

let fn = (): ((. unit) => unit) => (. ()) => ()
// Formatted to
let fn = (): (. unit) => unit => (. ()) => ()

let fn = (): (unit => unit) => ignore
// Everything works fine

Add "uncurried": true

let fn = (): (unit => unit) => ignore
// Formatted to
let fn = (): unit => unit => ignore

[cristianoc]

@DZakh check this: #6143
Anything missing?