auto-borrow and consistent behavior of pointers

[oblitum]

auto-deref has been added but I'm still interested in a more uniform behavior of custom pointers (meaning the ones that exist by trait implementation) and native ones (like the dying ~T).

An example situation:

use std::rc::Rc;

struct Bar { x: int }

fn foo(p: &int) {
    println!("{}", p);
}

fn baz(p: &Bar) {
    println!("{}", p.x);
}

fn main() {
    let pi = box 10;
    let pb = Rc::new(Bar {x: 3});
    foo(pi);
    // this still doesn't auto borrow:
    //baz(pb);
    // although this works:
    println!("{}", pb.x);
}

I've looked in #7141, #12491, #13542, #5527, #12825, #12610 and RFC 59 but could not grasp whether any would be addressing this or whether it's desirable, sorry if it's a duplicate.

[steveklabnik]

Closing in favor of the linked RFC issue.