optional parameters of "component"

[mvlcek]

@mvlcek:

I see you are using a global variable inside your implementation, why? You can do this without leaking any data into the global scoop, that way you don’t have to bother with back-upping any already existing variables either.

Yes, I know this. But I want to stay compatible with the DynPages plugin, which just calls get_component() and thus has to pass the parameters as globals.