Use custom foldtext

lua/settings.lua

@@ -77,6 +77,18 @@ vim.opt.autowrite = true
 -- Don't add 2 spaces after end of sentence
 vim.opt.joinspaces = false
 
+-- Set fold level to something high
+vim.opt.foldlevel = 20
+vim.opt.foldmethod = 'expr'
+vim.opt.foldexpr = 'nvim_treesitter#foldexpr()'
+vim.opt.fillchars = 'fold: '
+-- FIXME: Replace this with transparent fold text in 0.10
+-- https://github.com/neovim/neovim/pull/20750
+function _G.fold_text()
+  return vim.fn.getline(vim.v.foldstart)
+end
+vim.opt.foldtext = 'v:lua.fold_text()'
+
 -- Enable all mouse features
 vim.opt.mouse = 'a'