TYPO3 RealURL postVarSets hide keyword - typo3

Question

I have an URL which looks like this:
http://domain.com/leistungen/industrial-design/?tx_fsproject_fsprojectfp%5Bproject%5D=2&tx_fsproject_fsprojectfp%5Baction%5D=show&tx_fsproject_fsprojectfp%5Bcontroller%5D=Project&cHash=7c405bcde49853af9a7e78bdf465002c
Using RealURL with the following configuration (and some hook functions as explained here):
'postVarSets' => array(
'_DEFAULT' => array(
// projects
'industrial-design' => array(
array(
'GETvar' => 'tx_fsproject_fsprojectfp[controller]',
),
array(
'GETvar' => 'tx_fsproject_fsprojectfp[action]',
),
array(
'GETvar' => 'tx_fsproject_fsprojectfp[project]',
'lookUpTable' => array(
'table' => 'tx_fsproject_domain_model_project',
'id_field' => 'uid',
'alias_field' => 'title',
'addWhereClause' => ' AND deleted !=1 AND hidden !=1',
'useUniqueCache' => 1,
'useUniqueCache_conf' => array(
'strtolower' => 1,
'spaceCharacter' => '-',
)
)
),
),
),
),
I get an URL looking like this:
http://domain.com/leistungen/industrial-design/industrial-design/projekt/project-b/
This is not bad. However, why does the industrial-design/ part show up twice?

Answer 1

The first industrial-design is the page that is being displayed. The second one is the keyword inserted by RealURL to identify the set of variables. To avoid that you can:
Change the structure of pages so that you don't have industrial-design page at all.
Rename the postVarSets that you set up in the RealURL configuration.
Use fixedPostVars instead as that doesn't use a keyword to identify the set of variables but a page UID.