in let statments, in indent from the lhs not the rhs

[nrc]

Probably with an option, but this could make the rightward drift better,

e.g.,

// desirable
let a_long_name = match ... {
    a => ...,  
};

// undesirable
let a_long_name = match ... {
                          a => ...,  
                      };

[marcusklaas]

We already do the former, no?

[nrc]

We apparently do? I guess the examples I was pointed at were using an old rustfmt.