patch 8.0.0732: when updating a buffer modeless selection is lost commit https://github.com/vim/vim/commit/80dd3f9d41ce2ff6ab3544cdb266627bbdfc34a6 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jul 19 12:51:52 2017 +0200 patch 8.0.0732: when updating a buffer modeless selection is lost Problem: When updating a buffer for a callback the modeless selection is lost. Solution: Do not insert or delete screen lines when redrawing for a callback and there is a modeless selection.

" Tests for not doing smart indenting when it isn't set.
function! Test_nosmartindent()
  new
  call append(0, ["		some test text",
      	\ "		test text",
      	\ "test text",
      	\ "		test text"])
  set nocindent nosmartindent autoindent
  exe "normal! gg/some\<CR>"
  exe "normal! 2cc#test\<Esc>"
  call assert_equal("		#test", getline(1))
  enew! | close
endfunction