RustAnalzyer as rust formatter in vscode

[namse]

Reproduce step

1. open vs code
2. copy and paste to new file (ctrl+n)
3. make sure that selected language is rust in right bottom.
4. run format (alt+shift+t)

Expected result

• format with rustfmt by rust-analzyer extension

Actual result

vscode doesn't think rust-analzyer is rust formatter.

The previous, deprecated Rust extension supported this formatting. So I hope rust analzyer do this too.

[bjorn3]

Rust analyzer does support formatting without requiring any configuration. The only times I have seen that error is when rust-analyzer crashed. Could you check the rust analyzer logs in the output pane to see if it crashed?

[namse]

Rust analzyer is working with other files which I already saved.

I mean, when that error occurred , I didn't saved the file and just opened new file and then just run format.

Also, I couldn't find rust analzyer in vscode extensions marketplace with search category:formatters rust

[namse]

Here is the video about error.

https://user-images.githubusercontent.com/3580430/181212560-0d230d4f-3dfc-4ba4-8f23-cc18a9029760.mp4

There are no output of Rust Analzyer Language Server and Rust Analzyer Client when I run format this time.

[Veykril]

r-a doesn't have the formatters tag on the marketplace so that is being filter out by that query

[bjorn3]

You are using the Rust (rust-lang.rust) extension? You need the rust-analyzer (rust-lang.rust-analyzer) extension. Don't search for the formatting category. The rust-analyzer extension doesn't have this category listed.

[Veykril]

Ah, the issue is that you are trying to format a file that is not yet on disk, can reproduce that error then. Note that r-a doesn't work at all in files that are not part of the workspace.

[namse]

You are using the Rust (rust-lang.rust) extension? You need the rust-analyzer (rust-lang.rust-analyzer) extension. Don't search for the formatting category. The rust-analyzer extension doesn't have this category listed.

I didn't search with that category, vscode suggested to me when I press install formatter... button on error alert.

[namse]

Ah, the issue is that you are trying to format a file that is not yet on disk, can reproduce that error then. Note that r-a doesn't work at all in files that are not part of the workspace.

That's what i'm saying exactly. Is it intended? There are no plan to support formatting a file which is not yet on disk?

[Veykril]

I believe we should be able to support formatting non-indexed files, will have to check but it sounds like something that should be doable since we already format files be feeding rustfmt the source manually.

[xobs]

I just ran into this problem. rust-analyzer was disabled when I hit "format file", and it didn't show up when I clicked "Install formatter..."

The top of the list is the deprecated Rust extension, much like @namse reported.