nvim: execute current buffer as lua script by :write and :luafile

config/nvim/lua/fschauen/util/lua.lua

@@ -40,12 +40,15 @@ M.execute_selection = function()
   M.execute_lines(unpack(selection))
 end
 
+---Execute lua script in a file.
+---@param path string|nil Path to the file to execute. If nil, write and source
+---                       current buffer.
 M.execute_file = function(path)
-  if path then
-    vim.cmd.luafile(path)
-  else
-    M.execute_lines(1, vim.fn.line("$"))
+  if not path then
+    path = vim.fn.expand("%")
+    vim.cmd.write()
   end
+  vim.cmd.luafile(path)
 end
 
 ---Edit a lua module.