Indent 2 levels for line continuations

[superlukas]

I'm talking about this guy:

// this
frobnicate(
    arg1,
    arg2,
    arg3);

// becomes this
frobnicate(arg1, arg2,
        arg3, arg4);

Another example:

let really_really_really_long_name =
        "really really really long value tooooooooooooooooo";

That's how Clang-Format does it anyway ...

Edit: The reason I like and use this style is that it visually sets apart continuations from blocks.

I'm talking about this file.

[lilyball]

The indentation shown in that file, where values are wrapped to the level of their containing delimiters (e.g. args to the argument list) is pretty universal in my experience reading Rust code. It also aids in readability, because it makes it immediately obvious what the "scope" the line continuation is inside.

I could see an argument to be made for a 2-level indentation when the line continuation doesn't have a "scope", e.g. your example of really_really_really_long_name.