fold options/hotkeys

lua/options.lua

@@ -12,6 +12,14 @@ o.winborder = "single"
 o.termguicolors = true
 o.autoread = true
 
+-- Folding: native treesitter folds (function/class/block-aware), no plugin needed.
+-- `foldmethod=diff` (used automatically in :diffthis / fugitive / diffview windows)
+-- takes over on its own and isn't affected by this.
+o.foldmethod = "expr"
+o.foldexpr = "v:lua.vim.treesitter.foldexpr()"
+o.foldlevel = 99 -- start with everything open
+o.foldlevelstart = 99
+
 vim.api.nvim_create_autocmd({ "FocusGained", "BufEnter", "CursorHold", "CursorHoldI" }, {
     command = "if mode() != 'c' | checktime | endif",
 })