lualine.nvimでステータスラインをカスタマイズしよう！

ins_right {
      -- Lsp server name .
      function()
        local msg = "No Active"
        local buf_ft = vim.api.nvim_buf_get_option(0, "filetype")
        local clients = vim.lsp.get_active_clients()
        if next(clients) == nil then
          return msg
        end
        for _, client in ipairs(clients) do
          local filetypes = client.config.filetypes
          if filetypes and vim.fn.index(filetypes, buf_ft) ~= -1 and client.name ~= "null-ls" then
            return client.name
          end
        end
        return msg
      end,
      icon = " LSP:",
      color = { fg = colors.orange },
    }