nvim: install tree-sitter plugin

src/.config/nvim/init.vim

@@ -116,4 +116,25 @@ if has('python3')
 	let g:UltiSnipsSnippetDirectories=[$HOME.'/.config/nvim/ultisnips/']
 endif
 
+Plug 'nvim-treesitter/nvim-treesitter'
+
 call plug#end()
+
+lua << EOF
+require'nvim-treesitter.configs'.setup {
+  ensure_installed = { "c", "cpp", "javascript", "python", "vim", "latex" },
+  sync_install = false,
+  auto_install = false,
+  highlight = {
+    enable = true,
+
+    disable = function(lang, buf)
+        local max_filesize = 100 * 1024 -- 100 KB
+        local ok, stats = pcall(vim.loop.fs_stat, vim.api.nvim_buf_get_name(buf))
+        if ok and stats and stats.size > max_filesize then
+            return true
+        end
+    end,
+  },
+}
+EOF