nix/prog/nvim: move folding augroup to lua

nix/progs/nvim/config.vim

@@ -1,9 +1 @@
 lua require('basic')
-
-" Set up folding
-aug folding
-  au!
-  au BufNewFile,BufRead *.js,*.jsx    syntax on | setlocal foldmethod=syntax
-  au BufNewFile,BufRead *.ts,*.tsx    syntax on | setlocal foldmethod=syntax
-aug END
-

nix/progs/nvim/lua/basic.lua

@@ -136,6 +136,21 @@ vim.api.nvim_create_autocmd(bufReadFile, {
   callback = function () vim.wo.spell = true end,
 })
 
+local folding_augroup = vim.api.nvim_create_augroup('folding', {})
+vim.api.nvim_create_augroup(bufReadFile, {
+  group = folding_augroup,
+  pattern = {
+    '*.js',
+    '*.jsx',
+    '*.ts',
+    '*.tsx',
+  },
+  callback = function ()
+    vim.cmd 'syntax on'
+    vim.wo.foldmethod = 'syntax'
+  end,
+})
+
 
 -------------------------------------------------------------------------------
 --