fix: set autowrite/autowriteall, handle never-saved buffers

lua/tiny-autosave/init.lua

@@ -2,13 +2,20 @@ local M = {}
 
 function M.setup(opts)
   opts = opts or {}
-  local events = opts.events or { "InsertLeave", "FocusLost" }
+  local events = opts.events or { "InsertLeave", "TextChanged", "FocusLost" }
+
+  vim.opt.autowrite = true
+  vim.opt.autowriteall = true
+
   vim.api.nvim_create_autocmd(events, {
     group = vim.api.nvim_create_augroup("tiny-autosave", { clear = true }),
     callback = function()
-      if vim.bo.buftype == "" and vim.bo.modified then
-        vim.cmd("silent! wall")
+      local name = vim.api.nvim_buf_get_name(0)
+      if name ~= "" and vim.fn.filereadable(name) == 0 then
+        vim.fn.mkdir(vim.fn.fnamemodify(name, ":p:h"), "p")
       end
+      vim.cmd("silent! write")
+      vim.cmd("silent! wall")
     end,
   })
 end