What the best way to change css class for an active link from 'is-active' to (in my case) 'active'?
Also, need I really to replace it or to append my class? I know the 'is-active' class is hard-coded (here and in several php classes) and it is so strange for me since drupal is overloaded with many abstraction layers and tons of settings. What is it: "legacy of the past" or really well-founded idea?
I need 'active' class just for my current css-framework, but may be 'is-active' used in core or so?