vBulletin 3.8 Zoints SEO Rewrite Rules Nginx

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I couldn't locate any example of how to redirect friendly URLs managed by the Zoints SEO plugin for vBulletin so came up with my own configuration. I use Nginx so my location block looks like this:

    #rewrite thread requests
    rewrite t([0-9]+)\.html.* /threads/$1 permanent;
    #rewrite forum requests
    rewrite f([0-9]+)\.html.* /forums/$1 permanent;
    # First attempt to serve request as file, then
    # as directory, then pass to index.php
    try_files $uri $uri/ /index.php?$uri&$args;

E.g.:

• Nginx sees request for old 'Zoints style' http://www.example.com/heffalumps-and-woozles-t6758.html
• First rewrite rule regular expression matches t6758.html with subgroup 6758 denoted by $1
• Subgroup used to form location /threads/6758
• Nginx issues HTTP 301 [permanent redirect] with location http://www.example.com/threads/6758
• XenForo issues 301 redirect to http://www.example.com/threads/heffalumps-and-woozles.6758/#post-21638
• User sees page

Caveats are:

• You might have had Zoints configured differently so my pattern may not work
• Assumes a basic site set-up where forum is in root directory, no false positives, friendly URLs enabled etc.
• 2 redirects are being issued so there is a HTTP overhead for user and your server (unavoidable).
• 2 Regex rules are been run for every request to the server, something to be conscious of