Why is right variable in assert/1 function not unquoted?

[Papillon6814]

Thank you for your answer!

Sorry, I’m not sure why it should not be unquoted…
I think variables in quote should occurs an error without being unquoted.

@Papillon6814

defmacro assert({:=, meta, [left, right]} = assertion) do
    code = escape_quoted(:assert, meta, assertion)

    # If the match works, we need to check if the value
    # is not nil nor false. We need to rewrite the if
    # to avoid silly warnings though.
    check =
      suppress_warning(
        quote do
          case right do
            x when x in [nil, false] ->
              raise ExUnit.AssertionError,
                expr: expr,
                message: "Expected truthy, got #{inspect(right)}"

            _ ->
              :ok
          end
        end
      )

    __match__(left, right, code, check, __CALLER__)
  end

But right in above code is not unquoted. Why it does not occur any errors?