The checks PipeChainStart and ABC-Size allow a parameter excluded_functions.
This does not seem to work.

https://hexdocs.pm/credo/Credo.Check.Refactor.PipeChainStart.html

I have this function credo does not like:

def hello do
    Kernel.+(1, 1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
    |> Kernel.+(1)
  end

credo complains:

┃ [F] → Function is too complex (ABC size is 31, max is 30).
┃       lib/credo_check.ex:3:7 #(CredoCheck.hello)
┃ [F] → Pipe chain should start with a raw value.
┃       lib/credo_check.ex:5 #(CredoCheck.hello)

with this config:

{Credo.Check.Refactor.PipeChainStart, [excluded_functions: ["hello"]]},
{Credo.Check.Refactor.ABCSize, [excluded_functions: ["hello"]]},

I also tried

• :hello
• "CredoCheck.hello"
• "hello/0"
• ~r/hello/