How do I change template file for the user registration form? I want to use a different template file for the registration form, but I don't want to use page--user--register.html.twig because in this case I should rewrite all the page structure. We had user-register.tpl.php in Drupal 7, but I couldn't find the theme name in Drupal 8.
I found the solution here: http://www.foreach.be/blog/how-manipulate-forms-drupal-8
and the file name for overriding the user register form is:
form--user-register-form.html.twig