LSP should be able to attach to unnamed buffer

[mosheavni]

Language server

all (yamlls in the example)

Requested feature

Currently, the lsp server won't attach to an unnamed buffer because of this: https://github.com/neovim/nvim-lspconfig/blob/932164a3cc87eafdd20c7d271037bea913b31c7b/lua/lspconfig/configs.lua#L89-L90

I want the language server to do formatting linting and diagnostics on unnamed buffers when the language server or the user doesn't care about a workspace to be passed.

jsonls:

mkdir /tmp/unnamed-buffer-test
cd /tmp/unnamed-buffer-test
curl -sLO https://gist.githubusercontent.com/mosheavni/20c60ea4fe7d63554b6fbbd21a5fd59e/raw/3e001e4607664df0fa168f80d1bae138449a579d/minimal_init.lua
curl -s https://gist.githubusercontent.com/mosheavni/ef05c2c3aef46c9a14b2a63316a5c0a1/raw/313fd484f6b94727ccf1dc3d6b469659a9bdb5ca/myfile.json | nvim -nu minimal_init.lua

Now set the filetype to json:

:setf json

Should output `client jsonls is attached" does not.

:LspInfo

Other clients which have this feature

No response

[mosheavni]

No idea why this feature is not out of the box. can anyone please help? Any way to bypass this behaviour in my local config? This is truly a real pain in using neovim. I open a lot of kubectl get .. -oyaml | vim and I want formatting and diagnostics right away. Same for curl -Ls https://......json | vim There are so many cases where I'd want lsp to attach to an unnamed buffer. More than that, I even introduced a PR which for even weirder reason isn't approved since there's a workflow that doesn't allow the use of vim.fn.getcwd()

[glepnir]

it should be support I will take a look at this when i have time. thanks for report :)

[glepnir]

@mosheavni sorry for late . currently I can make it works fine. but I just want to know do we want only support with the single_file_support ? I think it can be support for any server ?

[mosheavni]

@glepnir I don't want to assume about any language server I don't know / not using, but this is an expected behaviour. If someone copies a code from stackoverflow, opens a new buffer and wants completion and diagnostics without having to save the file first, this is a desired behaviour.

[glepnir]

yep also think so. then I need do some works to make it more compete . also I need to check what the vscode do in this situation