path parens

[jesse99]

There are these weird extra parens in the GenericPath trait like so

    pure fn push((&str)) -> self;

Not a big deal, but it's likely to confuse people who may think they take a tuple argument.

[brson]

This is unfortunately to disambiguate the &str type from a reference mode argument. It can also be disambiguated by naming the argument, or we can wait until modes are gone and remove the parens.

[graydon]

Yeah, this is temporary, this kind of thing can go away when we remove modes. We'll probably just do a big search and replace on (&, so closing this.