patch 8.2.0381: using freed memory with :lvimgrep and autocommand Commit: https://github.com/vim/vim/commit/2573af3519ad062ddad647b97e32090f106f2ac1 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Mar 14 17:21:34 2020 +0100 patch 8.2.0381: using freed memory with :lvimgrep and autocommand Problem: Using freed memory with :lvimgrep and autocommand. (extracted from POC by Dominique Pelle) Solution: Avoid deleting a dummy buffer used in a window. (closes #5777)

" Test feedkeys() function.

func Test_feedkeys_x_with_empty_string()
  new
  call feedkeys("ifoo\<Esc>")
  call assert_equal('', getline('.'))
  call feedkeys('', 'x')
  call assert_equal('foo', getline('.'))

  " check it goes back to normal mode immediately.
  call feedkeys('i', 'x')
  call assert_equal('foo', getline('.'))
  quit!
endfunc