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copied!<p>Can't reproduce. Extra slashes immediately after the domain are never passed to mod_rewrite even with DirectorySlashes off -- I haven't checked whether it's Opera or Apache that's removing the slash). But otherwise, everything works fine:</p> <pre><code>RewriteBase / RewriteCond %{REQUEST_URI} ^//+(.*)$ [OR] RewriteCond %{REQUEST_URI} ^(.*/)/+$ RewriteRule .* http://domain/%1 [R=301,L] </code></pre> <p>Request for <a href="http://localhost//abc/b//" rel="noreferrer">http://localhost//abc/b//</a></p> <pre><code>127.0.0.1 - - [17/May/2010:12:26:36 +0100] [localhost/sid#c08fb0][rid#2756540/initial] (3) [perdir C:/HTTP/htdocs/] add path info postfix: C:/HTTP/htdocs/abc -> C:/HTTP/htdocs/abc/b/ 127.0.0.1 - - [17/May/2010:12:26:36 +0100] [localhost/sid#c08fb0][rid#2756540/initial] (3) [perdir C:/HTTP/htdocs/] strip per-dir prefix: C:/HTTP/htdocs/abc/b/ -> abc/b/ 127.0.0.1 - - [17/May/2010:12:26:36 +0100] [localhost/sid#c08fb0][rid#2756540/initial] (3) [perdir C:/HTTP/htdocs/] applying pattern '.*' to uri 'abc/b/' 127.0.0.1 - - [17/May/2010:12:26:36 +0100] [localhost/sid#c08fb0][rid#2756540/initial] (4) [perdir C:/HTTP/htdocs/] RewriteCond: input='/abc//b//' pattern='^//+(.*)$' => not-matched 127.0.0.1 - - [17/May/2010:12:26:36 +0100] [localhost/sid#c08fb0][rid#2756540/initial] (4) [perdir C:/HTTP/htdocs/] RewriteCond: input='/abc//b//' pattern='^(.*/)/+$' => matched 127.0.0.1 - - [17/May/2010:12:26:36 +0100] [localhost/sid#c08fb0][rid#2756540/initial] (2) [perdir C:/HTTP/htdocs/] rewrite 'abc/b/' -> 'http://domain//abc//b/' 127.0.0.1 - - [17/May/2010:12:26:36 +0100] [localhost/sid#c08fb0][rid#2756540/initial] (2) [perdir C:/HTTP/htdocs/] explicitly forcing redirect with http://domain//abc//b/ 127.0.0.1 - - [17/May/2010:12:26:36 +0100] [localhost/sid#c08fb0][rid#2756540/initial] (1) [perdir C:/HTTP/htdocs/] escaping http://domain//abc//b/ for redirect 127.0.0.1 - - [17/May/2010:12:26:36 +0100] [localhost/sid#c08fb0][rid#2756540/initial] (1) [perdir C:/HTTP/htdocs/] redirect to http://domain//abc//b/ [REDIRECT/301] </code></pre> <p>Note: consider not hard-coding the host:</p> <pre><code>RewriteCond %{HTTP_HOST} !="" RewriteCond %{REQUEST_URI} ^//+(.*)$ [OR] RewriteCond %{REQUEST_URI} ^(.*/)/+$ RewriteRule .* http://%{HTTP_HOST}/%1 [R=301,L] </code></pre> <p>Also note that the inner "//" was not replaced. You will to add another rule to replace inner slashes.</p> <p>NEW EDIT: OK, this seems to work for preventing URLs starting or ending with //:</p> <pre><code>RewriteEngine on RewriteBase / RewriteCond %{HTTP_HOST} !="" RewriteCond %{THE_REQUEST} ^[A-Z]+\s//+(.*)\sHTTP/[0-9.]+$ [OR] RewriteCond %{THE_REQUEST} ^[A-Z]+\s(.*/)/+\sHTTP/[0-9.]+$ RewriteRule .* http://%{HTTP_HOST}/%1 [R=301,L] </code></pre>

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