Elixir v1.12.0

File.rmdir-exclamation-mark

You're seeing just the function rmdir-exclamation-mark, go back to File module for more information.
Link to this function

rmdir!(path)

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Specs

rmdir!(Path.t()) :: :ok | {:error, posix()}

Same as rmdir/1, but raises a File.Error exception in case of failure. Otherwise :ok.