No behaviour.

[Ploppz]

I'm in linux using nvim 0.1.4.

I cloned racer into ~/work/rust/lib, and ran cargo build.
In my vimrc:

Plug 'racer-rust/vim-racer'
set hidden
let g:racer_cmd='/home/ploppz/work/rust/lib/racer/target/debug/racer'
let $RUST_SRC_PATH='/home/ploppz/work/rust/lib/racer/src/'

But the plugin doesn't work. There's no useful completion, and hotkeys like gd don't do anything. It worked earlier. What changed since then is just that I cloned and built the racer repository anew.
(edit: this is ~/work/rust/lib/racer)

[Shougo]

Please test if your racer works.
And you should ask the proper check method in racer repository
racer-rust/racer#591

[guingois]

Not sure if related but I sometimes get the same absence of behavior.

racer itself works fine on my setup. I followed the standard installation process and I can successfully use it with the command-line. As far as vim-racer is concerned, I've observed (with both nvim and vim) that:

When I open a Rust file directly, the plugin works fine. For example, nvim main.rs allows me to benefit from the plugin completion and hotkeys.

When I open a Rust file indirectly, the plugin does not work at all. For example, nvim, followed by the editor command :e main.rs, does not activate any of the plugin behavior.

This holds when I combine the two. For example:

1. nvim foo.rs => plugin OK.
2. :edit bar.rs => plugin KO.
3. :buffer # => plugin OK.

I hope it helps.

[Shougo]

You should check the buffer filetype.
I think it is not rust.

[simon-whitehead]

I also have this problem and can replicate it the same way @erwanthomas does.

Running: vim src/main.rs - everything works.
Running: vim . and using say, NERDTree to open the file - nothing works.

I ran this in both scenarios:

echo &filetype

Both of them return rust. Not sure how to proceed.

[guingois]

I've checked with a fresh Ubuntu install, installing only the bare minimum to run racer, vim and vim-racer.
Same results, and like @simon-whitehead, filetype is rust.

[Shougo]

Hm. OK. It should be fixed.
It is vim-racer bug.

[Shougo]

Please test the fix.
#77

[guingois]

Using your fix, I cannot replicate the problem anymore and the plugin works well. Thanks!

[Shougo]

Fixed.