title: How to rewrite an URL to include an additional path?
body: <p>I need to create a rule in my file .htaccess so that an additional path is included in the URL.<br/>
  For example, the following request: <br/></p>
  
  <pre><code>http://hostname/category/article.html
  </code></pre>
  
  <p>should be translated into: </p>
  
  <pre><code>http://hostname/main-category/category/article.html
  </code></pre>
  
  <p>I've tried adding this expression:</p>
  
  <pre><code>RewriteRule ^/category/(.+)$ /main-category/category/$1 [L,QSA]
  RewriteBase /
  </code></pre>
  
  <p>However the pages of that category are not reachable any more. Obviously the rewrite expression is uncorrect. 
  Here is the .htaccess file I have in the root directory:</p>
  
  <pre><code>RewriteEngine On
  
  ## Begin - Rewrite rules to block out some common exploits.
  # If you experience problems on your site block out the operations listed below
  # This attempts to block the most common type of exploit `attempts` to Joomla!
  #
  # Block out any script trying to base64_encode data within the URL.
  RewriteCond %{QUERY_STRING} base64_encode[^(]*\([^)]*\) [OR]
  # Block out any script that includes a &lt;script&gt; tag in URL.
  RewriteCond %{QUERY_STRING} (&lt;|%3C)([^s]*s)+cript.*(&gt;|%3E) [NC,OR]
  # Block out any script trying to set a PHP GLOBALS variable via URL.
  RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR]
  # Block out any script trying to modify a _REQUEST variable via URL.
  RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2})
  # Return 403 Forbidden header and show the content of the root homepage
  RewriteRule .* index.php [F]
  #
  ## End - Rewrite rules to block out some common exploits.
  
  
  ## I HAVE TRIED ADDING CUSTOM RULES HERE
  
  
  ## Begin - Joomla! core SEF Section.
  #
  RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
  #
  # If the requested path and file is not /index.php and the request
  # has not already been internally rewritten to the index.php script
  RewriteCond %{REQUEST_URI} !^/index\.php
  # and the request is for something within the component folder,
  # or for the site root, or for an extensionless URL, or the
  # requested URL ends with one of the listed extensions
  RewriteCond %{REQUEST_URI} /component/|(/[^.]*|\.(php|html?|feed|pdf|vcf|raw))$ [NC]
  # and the requested path and file doesn't directly match a physical file
  RewriteCond %{REQUEST_FILENAME} !-f
  # and the requested path and file doesn't directly match a physical folder
  RewriteCond %{REQUEST_FILENAME} !-d
  # internally rewrite the request to the index.php script
  RewriteRule .* index.php [L]
  #
  ## End - Joomla! core SEF Section.
  </code></pre>