Highlight arguments in function body in vim

Question

A little something that could be borrowed from IDEs. So the idea would be to highlight function arguments (and maybe scoped variable names) inside function bodies. This is the d

Answer 1

One possible solution can be found here. Not the best way because it highlights every occurrence in the whole file and you have to give the command every time (probably the second one can be avoided, don't know about the first). Give it a look though.