   end
 
   @doc """
-  Returns a string where leading/trailing Unicode whitespace
+  Returns a string where leading and trailing Unicode whitespace
   has been removed.
 
   ## Examples

  end

  @doc ~S"""
  Returns a new binary based on `subject` by replacing the parts
  matching `pattern` by `replacement`. By default, it replaces
  all entries, except if the `global` option is set to `false`.

  A `pattern` may be a string or a regex.

  ## Examples


  defp make_chunk_pred(:printable), do: &printable?/1

  @doc """
  Returns Unicode graphemes in the string as per Extended Grapheme
  Cluster algorithm outlined in the [Unicode Standard Annex #29,
  Unicode Text Segmentation](http://www.unicode.org/reports/tr29/).

