Where is request.php ?

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In concrete 5.6 I had edited the core file /concrete/core/libraries/request.php so i can work with dynamic links likehttp://mydomain.com/mypage/this-is-a-red-dress...
So I had hundreds of products with google friendly links ...
Now with 5.7 everything is messed up !!!!
Where is the /concrete/core/libraries/request.php file now ?
I want to try to do the same with 5.7 version

 
Mnkras replied on at Permalink Reply
Mnkras
1. You shouldn't have done that in the first place
2. The underlying code has changed a lot, it now uses routes from Laravel.
kostasdak replied on at Permalink Reply
Why I shouldnt do that ?
Is there a build in process to achive that ?
As far as I search I didn't find anything !!!