Tab completion on Vectors not working

[vsndev3]

I have this piece of code having issue only with Vectors and not on regular struct. I have to note that this is working for both cases in one system, but no on the other. Have tried ":internal_debug" and shows no difference between working and non working version. What could be the cause of not completing tab completion? I am able to print the actual value though even in non working case. Does this need rust-analyzer to be installed?

Welcome to evcxr. For help, type :help
>> #[derive(Debug,Default)]
struct Sa {
  a: u32,
b: u32
}
let mut v : Vec<Sa> = Vec::<Sa>::new();
v.push(Sa::default());
>> let s : Sa = Sa::default();
>> s.                         << this expands
a  b
>> v[0].                     << fails to expand
>> v[0]
Sa { a: 0, b: 0 }
>> v[0].a
0

[davidlattimore]

Evcxr uses rust-analyzer as a library - i.e. when you build evcxr, rust-analyzer is built-in to the evcxr binary. So you don't need a separate copy of rust-analyzer installed.

The main thing that evcxr needs in order for things like completions to work is for the rust-src component to be installed. You can check with rustup component list | grep src, which should show:

rust-src (installed)

If it doesn't, then you can install rust-src with rustup component add rust-src.

I don't know if that's the problem - it's just the only idea that comes to mind.