doctest raises syntaxerror: unexpected token

[ggscha]

Environment

• Elixir & Erlang/OTP versions (elixir --version): Elixir 1.12.3 (compiled with Erlang/OTP 22)
• Operating system: Windows 10
• IDE: VSCode

Current behavior

As a newy to Elixir I walked through the provided example on the official web page. Regarding doctest I got following output:

  6) doctest KVServer.Command.parse/1 (1) (KVServer.CommandTest)
     test/command_test.exs:3
" (column 46, code point U+000D)t: (SyntaxError) lib/command.ex:7:46: unexpected token: "
     doctest:
       iex> KVServer.Command.parse "CREATE shopping\r\n"
       {:ok, {:create, "shopping"}}
     stacktrace:
       lib/command.ex:7: KVServer.Command (module)

Expected behavior

the test cases generated by doctest should have been smoothly executed without error.

Temporary resolution

It looks like as if doctest does not recognize properly EOL if going with the OS/IDE-defaults (CRLF in this case). Switching to LF for the concerned source files resolves the issue for the time being.