ASCII color codes are displayed inline for rust_analyzer

[lindhe]

Description

Sometimes, the error printed as ASCII color codes in the string from rust_analyzer. It makes the error very hard to read. Could this be caused by an underlying library? I had a quick look at the trait definition I used, and didn't find any offending color codes there.

Neovim version

NVIM v0.10.0-dev
Build type: RelWithDebInfo
LuaJIT 2.1.0-beta3
Run "nvim -V1 -v" for more info

Nvim-lspconfig version

No response

Operating system and version

Ubuntu 22.04

Affected language servers

rust_analyzer

Steps to reproduce

1. Create the following crate:

   cargo new -q foo
   cd foo
   cargo add -q rocket@0.5.0-rc.3
   cat <<EOF > src/main.rs
   use rocket::UriDisplayPath;
   
   fn main() {
       println!("Hello, world!");
   }
   
   #[derive(UriDisplayPath)]
   pub enum Foo {
       Bar,
   }
   EOF

2. Optionally run cargo check.

3. Open src/main.rs with Vim.

Actual behavior

The same thing, just without the ASCII color codes printed. Ideally, they would be encoded into colors, but if that's hard then they should be stripped.

Expected behavior

Minimal config

local on_attach = function(client, bufnr)
  -- Enable completion triggered by <c-x><c-o>
  vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')
end

require("mason").setup()
require("mason-lspconfig").setup({
  ensure_installed = {
    "rust_analyzer",
  },
  automatic_installation = true,
})

require('lspconfig')['rust_analyzer'].setup {
    on_attach = on_attach,
}

LSP log

https://gist.github.com/lindhe/07979ad869c5f19ff50728e4b7af0da0

[glepnir]

I think it's more like a rust-analyzer issue. vs code
have the same problem

[glepnir]

you can use vim.lsp.with to reformat the message by using regex remove these ascii color code.