emacs rust-mode.el: "file:line-num" output does not work with "note:"

[pnkfelix]

The problem described in #6887 is afflicting rustc's "note:" output, probably because the regexp added in 521fb04 only has cases for "error:" and "warning:", not "note:".

[pnkfelix]

part of #8793

[huonw]

This may be fixed, at least, the following set-up allows me to jump to the right place from inside the compilation mode:

// Cargo.toml
[project]
name = "11128"
version = "0.0.0"
authors = []

[dependencies.compile_msg]
git = "https://github.com/huonw/compile_msg"

// src/main.rs
#![feature(phase)]

#[phase(plugin)] extern crate compile_msg;

fn main() {
    compile_note!("hello");
}

cargo build prints

/home/huon/projects/test-rust/triage/11128/src/main.rs:6:5: 6:28 note: hello
/home/huon/projects/test-rust/triage/11128/src/main.rs:6     compile_note!("hello");
                                                             ^~~~~~~~~~~~~~~~~~~~~~~

and I can jump to exactly that line by pressing enter while hovering over it.

This may not be an exact reproduction of the issues here, which I why I'm not closing it. Opinion, @pnkfelix?

[steveklabnik]

Moved to rust-lang/rust-mode#7