Answer 1

Answer 2

RedirectPermanent /ru http://www.site.com/ru

可能是重写规则的更好选择。

Answer 3

如果你检查.htaccess文件，你可能会看到85-90行（Drupal 7.x）：

# To redirect all users to access the site WITH the 'www.' prefix,
# (http://example.com/... will be redirected to http://www.example.com/...)
# uncomment the following:
# RewriteCond %{HTTP_HOST} .
# RewriteCond %{HTTP_HOST} !^www\. [NC]
# RewriteRule ^ http%{ENV:protossl}://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

如果您取消注释这一行，您可以获得解决问题的方法。