format selection == doesn't work with rust

[guihao-liang]

Is your feature request related to a problem? Please describe.
I want to format the selected code with = key for rust lang.

Describe the solution you'd like
select code and use == to format code. In normal mode, just =G to format all. I hope rustfmt can be supported by vscodevim!

Describe alternatives you've considered
I'm using vscode plugin rust-lang.rust and I need to use editor.formatOnSave to format all codes.

[J-Fields]

This is likely a bug/limitation of the rust plugin. When == is pressed, we just select the line(s) and call editor.action.formatSelection, which is handled by the language server plugin. Can you try calling that command yourself and see what happens?

[guihao-liang]

This is likely a bug/limitation of the rust plugin. When == is pressed, we just select the line(s) and call editor.action.formatSelection, which is handled by the language server plugin. Can you try calling that command yourself and see what happens?

Thanks for the prompt reply! Could you guide me on how to call that command? Thanks!

[J-Fields]

Open the command palette (ctrl+shift+P by default) and type "format selection"

[guihao-liang]

Well, there no such operation. That's weird. Is it override by rust-lang.rust?

[guihao-liang]

I tried with a python file and I can find the format selection command option.

[J-Fields]

This probably means the rust formatter only supports formatting entire files (I know python's black formatter is the same way). I found rust-lang/rustfmt#434 which led me to rust-lang/rustfmt#3397. In any case, this doesn't seem to be the fault of VSCodeVim so I'll close the issue.

[Anstow]

In case others stumble upon this like I have. You can now get this to work using rust-analyzer and opting into the nightly version of rustfmt. You can do this in two steps. Firstly, install the nightly version of rustfmt
$ rustup toolchain install nightly
Secondly, enable this in the rust-analyzer plugin by adding the following to your settings.json:

{
    "rust-analyzer.rustfmt.rangeFormatting.enable": true,
    "rust-analyzer.rustfmt.extraArgs": [
        "+nightly"
    ]
}

[futscdav]

The option is now spelled "rust-analyzer.rustfmt.enableRangeFormatting": true