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Asked: 2026-05-11T06:21:43+00:00

I’m trying to debug URL rewriting on a hosted site, where I don’t have

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I’m trying to debug URL rewriting on a hosted site, where I don’t have access to vhost.conf and so can’t set up a rewrite log. How else can I debug rules that aren’t working?

This is the rule I’m trying to straighten out, if anyone has any insight:

RewriteRule ^([^/]+)\.([^/]+)$ xslt.php [L]

What I expect to have happen: URLs that have dots but no slashes to be rewritten to point to xslt.php and then stop rewriting, so that it doesn’t go into a loop. What actually happens? 500 Internal Server Error (which smells like it is looping). I know I can add a RewriteCond to specifically exclude xslt.php, but I’d prefer to understand why this is breaking first.

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1 Answer

  1. Why wouldn’t it loop? xslt.php has dots but no slashes. Try changing your options to [L,NS].

    Edit: Ah, I see. What you’re missing is that [L] terminates all rewriting for this request, but a subrequest is still generated that gets its own rewrite pass. [NS] suppresses that pass.

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