patch 8.0.0548: saving the redo buffer only works one time commit https://github.com/vim/vim/commit/d4863aa99e0527e9505c79cbeafc68a6832200bf Author: Bram Moolenaar <Bram@vim.org> Date: Fri Apr 7 19:50:12 2017 +0200 patch 8.0.0548: saving the redo buffer only works one time Problem: Saving the redo buffer only works one time, resulting in the "." command not working well for a function call inside another function call. (Ingo Karkat) Solution: Save the redo buffer at every user function call. (closes #1619)

" Test for joining lines.

func Test_join_with_count()
  new
  call setline(1, ['one', 'two', 'three', 'four'])
  normal J
  call assert_equal('one two', getline(1))
  %del
  call setline(1, ['one', 'two', 'three', 'four'])
  normal 10J
  call assert_equal('one two three four', getline(1))
  quit!
endfunc