let ref not highlighted

[cyrus-and]

As the title says, take this example:

fn main() {
    let highlighted = ();
    let ref not_highlighted = ();
}

I'm using the latest version from MELPA.

[tromey]

Looks like a buglet here:

     ;; Type-inferred binding
     (,(concat "\\_<\\(?:let\\|ref\\)\\s-+\\(?:mut\\s-+\\)?" (rust-re-grab rust-re-ident) "\\_>") 1 font-lock-variable-name-face)

since if you remove the let from the source, the identifier is highlighted.

[cyrus-and]

I didn't check your commit nor the regex but the same happens also with let ref mut.