[TYPO3] multiple URLs per page in RealURL - how to fix?

[Jason Lefkowitz]

Hey everybody...

RealURL question here.  My current configuration is producing multiple 
URLs for the same page -- say for instance I have an "About Us" page, 
and inside that is a page called "History".  The History page is 
accessible via 2 different URLs:

/about-us/history/
/about-us/history.html

My understanding is that this is bad for SEO -- Google likes it better 
when every page has one definitive address. So I'm trying to figure out 
how to reconfigure RealURL so it only produces one URL, in the format 
/about-us/history.html.

 From reading the famously indecipherable RealURL docs, I _thought_ this 
would be accomplished if I set init.appendMissingSlash = 'ifNotFile' and 
  filename.defaultToHTMLsuffixOnPrev = '1'.  But that doesn't do it.

How would I go about reconfiguring RealURL to make it behave in this 
way?  Any help would be appreciated...

Current RealURL configuration follows:

$TYPO3_CONF_VARS['EXTCONF']['realurl']['_DEFAULT'] = array(
         'init' => array(
             'enableCHashCache' => 1,
             'appendMissingSlash' => 'ifNotFile',
             'enableUrlDecodeCache' => 1,
             'enableUrlEncodeCache' => 1,
             'respectSimulateStaticURLs' => 0,
             'postVarSet_failureMode' => '',
         ),
     'redirects_regex' => array (

     ),
     'preVars' => array(
                         array(
                                 'GETvar' => 'no_cache',
                                 'valueMap' => array(
                                     'no_cache' => 1,
                                 ),
                                 'noMatch' => 'bypass',
                         ),
                          array(
                              'GETvar' => 'L',
                              'valueMap' => array(
                                                 'en' => '1',
                                         ),
                                 'noMatch' => 'bypass',
                         ),
                 ),
      'pagePath' => array(
             'type' => 'user',
             'userFunc' => 
'EXT:realurl/class.tx_realurl_advanced.php:&tx_realurl_advanced->main',
             'spaceCharacter' => '-',
             'languageGetVar' => 'L',
             'expireDays' => 7,
             'rootpage_id' => 1,
         ),


       'postVarSets' => array(
             '_DEFAULT' => array(
                 // news archive parameters
                 'archive' => array(
                     array(
                         'GETvar' => 'tx_ttnews[year]' ,
                         ),
                     array(
                         'GETvar' => 'tx_ttnews[month]' ,
                             'valueMap' => array(
                             'january' => '01',
                             'february' => '02',
                             'march' => '03',
                             'april' => '04',
                             'may' => '05',
                             'june' => '06',
                             'july' => '07',
                             'august' => '08',
                             'september' => '09',
                             'october' => '10',
                             'november' => '11',
                             'december' => '12',
                             )
                         ),
                     ),
                 // news pagebrowser
                 'browse' => array(
                     array(
                         'GETvar' => 'tx_ttnews[pointer]',
                         ),
                     ),
                 // news categories
                 'select_category' => array (
                     array(
                         'GETvar' => 'tx_ttnews[cat]',
                         ),
                     ),
                 // news articles and searchwords
                 'article' => array(
                     array(
                         'GETvar' => 'tx_ttnews[tt_news]',
                         'lookUpTable' => array(
                             'table' => 'tt_news',
                             'id_field' => 'uid',
                             'alias_field' => 'title',
                             'addWhereClause' => ' AND NOT deleted',
                             'useUniqueCache' => 1,
                             'useUniqueCache_conf' => array(
                                 'strtolower' => 1,
                                 'spaceCharacter' => '-',
                                 ),
                             ),
                         ),
                     array(
                         'GETvar' => 'tx_ttnews[swords]',
                         ),
                     ),
                 ),
             ),

       'fileName' => array(
             'defaultToHTMLsuffixOnPrev'=>1,
             'index' => array(
                 'rss.xml' => array(
                     'keyValues' => array(
                         'type' => 100,
                     ),
                 ),
                 'rss091.xml' => array(
                     'keyValues' => array(
                         'type' => 101,
                     ),
                 ),
                 'rdf.xml' => array(
                     'keyValues' => array(
                         'type' => 102,
                     ),
                 ),
                 'atom.xml' => array(
                     'keyValues' => array(
                         'type' => 103,
                     ),
                 ),
             ),
         ),
  );