Setting clangd capabilities

[ghost]

Hello, I've recently migrated from my old LSP setup to lspzero, and in my older configuration, I had this line:

-- Customize capabilities for clangd server
if server == "clangd" then
  server_capabilities.offsetEncoding = "utf-8"
end

For context:

-- Set up Mason
require("mason").setup()

-- Configure Mason LSP
require("mason-lspconfig").setup({
  ensure_installed = vim.tbl_keys(servers),
  handlers = {
    function(server)
      -- Create a deep copy of capabilities
      local server_capabilities = vim.deepcopy(capabilities)

      -- Customize capabilities for clangd server
      if server == "clangd" then
        server_capabilities.offsetEncoding = "utf-8"
      end

      -- Set up LSP configurations for the current server
      require("lspconfig")[server].setup({
        capabilities = server_capabilities,
        on_attach = on_attach,
        settings = servers[server],
        filetypes = (servers[server] or {}).filetypes,
      })
    end,
  },
})

I've also scanned through the docs, and it only shows how to configure the default capabilities for all servers. How can I change the capabilities only for clangd?

P.S. I also came across a discussion where clangd_extensions was mentioned; however, I don't use clangd_extensions. So, I figured it wasn't applicable to my case.

[VonHeikemen]

If I understand correctly, you can add a new handler for clangd and just setup the language server there.

require('mason').setup({})
require('mason-lspconfig').setup({
  handlers = {
    lsp_zero.default_setup,
    clangd = function()
      require('lspconfig').clangd.setup({
        capabilities = {
          offsetEncoding = 'utf-8',
        },
      })   
    end,
  },
})

[ghost]

Oh! I have been overthinking this stuff, thank you very much! Additionally, how can I disable all formatting capabilities for all LSP servers?

[VonHeikemen]

You can use the on_attach function to modify the server capabilities.

lsp_zero.on_attach(function(client, bufnr)
    client.server_capabilities.documentFormattingProvider = false
    client.server_capabilities.documentFormattingRangeProvider = false
end)

[ghost]

Hmmm, I see. Just to be clear, this wouldn't remove any other default settings coming from lsp-zero right? And would I do this before setting the handlers?

[VonHeikemen]

You can use the .on_attach function anywhere really. I prefer to use it right after the require of lsp-zero.

In the readme this is the config I show.

local lsp_zero = require('lsp-zero')

lsp_zero.on_attach(function(client, bufnr)
  lsp_zero.default_keymaps({buffer = bufnr})
end)

require('mason').setup({})
require('mason-lspconfig').setup({
  handlers = {
    lsp_zero.default_setup,
  },
})

With the changes I suggested, it would look like this.

local lsp_zero = require('lsp-zero')

lsp_zero.on_attach(function(client, bufnr)
  lsp_zero.default_keymaps({buffer = bufnr})

  client.server_capabilities.documentFormattingProvider = false
  client.server_capabilities.documentFormattingRangeProvider = false
end)

require('mason').setup({})
require('mason-lspconfig').setup({
  handlers = {
    lsp_zero.default_setup,
    clangd = function()
      require('lspconfig').clangd.setup({
        capabilities = {
          offsetEncoding = 'utf-8',
        },
      })   
    end,
  },
})

[ghost]

This is noted! Thank you very much!