some tree-sitter adjustments

nvim/.config/nvim/lua/basic-settings.lua

@@ -1,7 +1,8 @@
 
 -- Basics
 vim.opt.foldmethod = "expr"
-vim.opt.foldexpr = "nvim_treesitter#foldexpr()"
+vim.opt.foldexpr = "v:lua.vim.treesitter.foldexpr()"
+vim.opt.foldlevel = 99
 vim.opt.number = true
 vim.opt.relativenumber = true
 vim.opt.tabstop = 4

nvim/.config/nvim/lua/plugins/treesitter.lua

@@ -2,11 +2,15 @@
 -- treesitter: code parser
 return {
     "nvim-treesitter/nvim-treesitter",
+    branch = "master",
     build = ":TSUpdate",
     opts = {
-        ensure_installed = {"python", "bash", "lua", "json", "java", "typescript"},
+        ensure_installed = {"python", "bash", "lua", "json", "java", "typescript", "vim", "markdown", "yaml", "toml"},
+        auto_install = true,
         highlight = { enable = true },
-        indent = { enable = true },
-        fold = { enable = true }
-    }
+        indent = { enable = true }
+    },
+    config = function(_, opts)
+        require("nvim-treesitter.configs").setup(opts)
+    end,
 }