New lines break exception message redering difficult to understand

[eksperimental]

Elixir and Erlang/OTP versions

New lines have been added to KeyError exception message.

Operating system

MacOs

Current behavior

Given this code:

defmodule Debug119 do
  def my_fetch!(map, key) when is_map(map) do
    Map.fetch!(map, key)
  end
end

On Elixir v1.18

On Elixir v1.19-rc1

\n\n are added after the colon.

Expected behavior

As before

[josevalim]

It was an intentional change: #14269

It is unlikely we will have a format that everyone is happy with but I am ok with giving the new version a try. I would only add a newline after the term. Which I will push to main.

[eksperimental]

That new line fixes the issue for me.