   end
 
   @doc """
-  Registers the default port `port` for the given `scheme`.
+  Registers the default `port` for the given `scheme`.
 
   After this function is called, `port` will be returned by
   `default_port/1` for the given scheme `scheme`. Note that this function

  Utilities for working with URIs.

  This module provides functions for working with URIs (for example, parsing
  URIs or encoding query strings). For reference, most of the functions in this
  module refer to [RFC 3986](https://tools.ietf.org/html/rfc3986).
  """

  defstruct scheme: nil, path: nil, query: nil,

  end

  @doc """
  Percent-escapes all characters that require escaped in a string.

  This means reserved characters, such as `:` and `/`, and the so-
  called unreserved characters, which have the same meaning both
  escaped and unescaped, won't be escaped by default.

  See `encode_www_form` if you are interested in escaping reserved
  characters too.

  This function also accepts a `predicate` function as an optional
  argument. If passed, this function will be called with each byte
  in `string` as its argument and should return `true` if the given
  byte should be left as is.

  ## Examples

