Can .formatter.exs ignore some files

IIRC you can do

[
  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"] -- ["lib/foo/bar.ex"]
]

Not tested though, I just remember seeing it mentioned somewhere in the past.

EDIT:

Having played around I think it’s actually something like this:

[
  inputs: Enum.flat_map(["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"], & Path.wildcard(&1, match_dot: true)) -- ["lib/foo/bar.ex"]
]

So you handle the wildcard expansion yourself.

That didn’t work for me and as written I wouldn’t expect it to since the -- runs before inputs is expanded by Path.wildcard

Yeah sorry, just edited my reply

Oh, okay. I’ll give that a try later

The edited version of this works!