Adding a line break after a Trait in a template argument list breaks emacs-mode indentation

[gsingh93]

I think this is a somewhat serious bug with emacs-mode, since I can't use the tab key for indentation inside a function block in many cases.

My code ends up with a long list of traits with bounds in the template argument list, and according to the style guide, I can wrap between traits. However, if I wrap between traits, identation is broken for the function. Consider the following example,

pub fn foo<T,
           V>() {
              // Indentation puts me here
}

As you can see, hitting tab inside the function idents too much. I should mention that I aligned the second template argument to match up with the first, as hitting tab there doesn't work either.

[steveklabnik]

Does this still happen today?

[gsingh93]

Indentation now looks like this:

pub fn foo<T,
V>() {
    // Indentation puts me here
}

[pnkfelix]

part of #8793

[steveklabnik]

Moved to rust-lang/rust-mode#10