   end
 
   @doc """
-  Returns a string where trailing Unicode whitespace
+  Returns a string where all trailing Unicode whitespaces
   has been removed.
 
   ## Examples

  defdelegate rstrip(binary), to: String.Unicode

  @doc """
  Returns a string where trailing `char` have been removed.

  ## Examples


  end

  @doc """
  Returns a string where all leading Unicode whitespaces
  has been removed.

  ## Examples
