Here is a simple example which pops up too often: i need a "flatpages" controller which will display a page based on its url. Or, as another example, a category

Here is a simple example which pops up too often: i need a "flatpages" controller which will display a page based on its url. Or, as another example, a category tree. With regexes, this is a piece of cake. With routers that try to hide regexes, i have to undo the work done by the router.