.htaccess使用下划线字母重定向

Question

我当前的.htaccess文件如下：

RewriteEngine On
RewriteCond %{HTTPS} !=on
RewriteRule .* https://www.tuitionathome.my%{REQUEST_URI} [R,L]

RewriteEngine on
Options -Indexes
AddHandler application/x-httpd-php55 .php .php5 .php4 .php3

RewriteRule ^([A-Za-z0-9]+)$ http://www.tuitionathome.my/inc/go.php?webname=$1 [R=301,L]