Issue #2538982 by dawehner, pwolanin, Fabianx: Get rid of strtr in UrlGenerator, it is not needed

  /**

   * Overrides characters that will not be percent-encoded in the path segment.

   *

   * The first two elements are the first two parameters of str_replace(), so

   * if you override this variable you can also use arrays for the encoded

   * and decoded characters.

   *

   * @see \Symfony\Component\Routing\Generator\UrlGenerator

   */

  protected $decodedChars = array(

  protected $decodedChars = [

    // the slash can be used to designate a hierarchical structure and we want allow using it with this meaning

    // some webservers don't allow the slash in encoded form in the path for security reasons anyway

    // see http://stackoverflow.com/questions/4069002/http-400-if-2f-part-of-get-url-in-jboss

    '%2F' => '/',

  );

    '%2F', // Map from these encoded characters.

    '/', // Map to these decoded characters.

  ];

  /**

   *  Constructs a new generator object.

    }

    // The contexts base URL is already encoded (see Symfony\Component\HttpFoundation\Request)

    $url = strtr(rawurlencode($url), $this->decodedChars);

    $url = str_replace($this->decodedChars[0], $this->decodedChars[1], rawurlencode($url));

    // Drupal paths rarely include dots, so skip this processing if possible.

    if (strpos($url, '/.') !== FALSE) {