feat(cmp): added option auto_brackets that adds brackets to functions/methods in configured filetypes

lua/lazyvim/plugins/coding.lua

@@ -10,11 +10,22 @@ return {
       "hrsh7th/cmp-buffer",
       "hrsh7th/cmp-path",
     },
+    -- Not all LSP servers add brackets when completing a function.
+    -- To better deal with this, LazyVim adds a custom option to cmp,
+    -- that you can configure. For example:
+    --
+    -- ```lua
+    -- opts = {
+    --   auto_brackets = { "python" }
+    -- }
+    -- ```
+
     opts = function()
       vim.api.nvim_set_hl(0, "CmpGhostText", { link = "Comment", default = true })
       local cmp = require("cmp")
       local defaults = require("cmp.config.default")()
       return {
+        auto_brackets = {}, -- configure any filetype to auto add brackets
         completion = {
           completeopt = "menu,menuone,noinsert",
         },
@@ -58,12 +69,25 @@ return {
         sorting = defaults.sorting,
       }
     end,
-    ---@param opts cmp.ConfigSchema
+    ---@param opts cmp.ConfigSchema | {auto_brackets?: string[]}
     config = function(_, opts)
       for _, source in ipairs(opts.sources) do
         source.group_index = source.group_index or 1
       end
-      require("cmp").setup(opts)
+      local cmp = require("cmp")
+      local Kind = cmp.lsp.CompletionItemKind
+      cmp.setup(opts)
+      cmp.event:on("confirm_done", function(event)
+        if not vim.tbl_contains(opts.auto_brackets or {}, vim.bo.filetype) then
+          return
+        end
+        local entry = event.entry
+        local item = entry:get_completion_item()
+        if vim.tbl_contains({ Kind.Function, Kind.Method }, item.kind) then
+          local keys = vim.api.nvim_replace_termcodes("()<left>", false, false, true)
+          vim.api.nvim_feedkeys(keys, "i", true)
+        end
+      end)
     end,
   },