no new line in @@ match

[EmileTrotignon]

Lwt.run
@@ match x with
| A -> a
| B -> b

instead of

Lwt.run
@@
match x with
| A -> a
| B -> b

This is good because there is one less newline, and because it is more consistent with the @@ function formatting:

Lwt.run
@@ function
| A -> a
| B -> b

There are two issues that need to be addressed before merging:

• with operator ||, it looks weird:

my_bool
|| match x with
| A -> true
| B -> false

Maybe this is okay. The same weirdness could also happen with function, even if its less likely.

• when the match is in parens, the code says it shouldnt format like it does, but it still does, with a weird indentation:

let _ =
  foo
  $$ (match group with
    | [] -> impossible "previous match"
    | [ cmt ] -> fmt_cmt t conf cmt ~fmt_code $ maybe_newline ~next cmt)
  $$ bar
;;

This is not necessarily bad, but the indentation should be fixed, and why this is happening should be understood before merging.

[EmileTrotignon]

thats not great, also needs to be addressed