"Corresponding file cannot be determined" printout when another LSP server exists

[YanzhaoW]

Problem

When using other LSPs, such as csspell_ls, using switch_source_header always results in a printout of

Corresponding file cannot be determined.

This is due to that csspell_ls, as a LSP for spell checking, can't find the source or header file.

Possible solutions

Change

https://github.com/p00f/clangd_extensions.nvim/blob/b67cc417d9020fb4b83d46662351b4d16894905e/lua/clangd_extensions/utils.lua#L3-L8

to

function M.buf_request_method(method, params, handler, bufnr)
    local clients = vim.lsp.get_clients({ bufnr = bufnr, method = method })
    for _, client in pairs(clients) do
        if client.name == "clangd" then
            client:request(method, params, handler, bufnr)
            return
        end
    end
end

[dchinmay2]

The client name doesn't have to be clangd for clangd, see :h vim.lsp.ClientConfig - it is user defined. Why does csspell_ls advertise support for textDocument/switchSourceHeader?

[YanzhaoW]

Hi, thanks for reply.

I guess csspell_ls doesn't support textDocument/switchSourceHeader and that's the reason when it's called with client:request, the handler gets uri of nil. And it triggers the printout of "Corresponding file cannot be determined." from

https://github.com/p00f/clangd_extensions.nvim/blob/b67cc417d9020fb4b83d46662351b4d16894905e/lua/clangd_extensions/switch_source_header.lua#L4-L18

[dchinmay2]

this line
https://github.com/p00f/clangd_extensions.nvim/blob/b67cc417d9020fb4b83d46662351b4d16894905e/lua/clangd_extensions/utils.lua#L4

filters clients which are attached to the same buffer and support the requested method (the method = method part, see :h vim.lsp.get_clients()), so if csspell_ls is advertising this method it's a bug in csspell_ls

[YanzhaoW]

I see. Maybe it's a bug from csspell_ls, or maybe it accepts everything but not implemented at the end. Sorry that I'm not familiar with how neovim LSP works under the hood.

Would it be possible to have a toggle option to disable the printout of "Corresponding file cannot be determined" such that this plugin can still work well even if some LSPs have some bugs?

[dchinmay2]

Which version of neovim do you have?

[YanzhaoW]

Hi, @p00f

I'm using v0.11.2