Inconsistent indentation in with

[Trevoke]

I have this gem of indentation in my code right now (and yes, that's how emacs wants it indented):

      def move_to_random_location(%{location_id: loc_id, id: id, exits: exits} = state) do
        with true <- Enum.any?(exits),
             info <- public_info(state),
               %{from_id: new_loc_id} <- Enum.random(exits),
               :ok <- World.Location.depart(loc_id, {{__MODULE__, id}, info, new_loc_id}),
             {:ok, new_exits} <- World.Location.arrive(new_loc_id, {{__MODULE__, id}, info, loc_id}) do
          %{state | location_id: new_loc_id, exits: new_exits}
        else
          false -> state
        :not_in_location -> state
        end
      end

[pmontrasio]

I'm on Elixir mode 20170102.942 from melpa. I get the code indented like this

    with {:ok, body} <- File.read(filename),
         {:ok, json} <- Poison.decode(body), do: {:ok, json}
  else
    _ ->
      return {:error, "#{filename} does not exist or is not JSON"}
  end

It's ok if I omit the : in the do:

    with {:ok, body} <- File.read(filename),
         {:ok, json} <- Poison.decode(body), do {:ok, json}
    else
      _ ->
        return {:error, "#{filename} does not exist or is not JSON"}
    end

but there should really be a : there.

[guillaumebrunerie]

Here are two more examples of indentation of with. The second one really seems to be driving emacs crazy.

defmodule Test do
  def f(x) do
    with y <- x,
         z <- y,
           w <- z,
           t <- w,
           u <- t do
      u
    end
  end
  
  def g(a) do
    with <<b::binary-size(3)>> <- a,
      c <- 3,
                       d <- 3,
    <<e::binary>> <- b do
                      e
    end
  end
end