patch 8.0.1004: matchstrpos() without a match returns too many items commit https://github.com/vim/vim/commit/8d9f0ef5c6a6f6d19c3d02690e1ee347a70b8452 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Aug 27 13:51:01 2017 +0200 patch 8.0.1004: matchstrpos() without a match returns too many items Problem: Matchstrpos() without a match returns too many items. Solution: Also remove the second item when the position is beyond the end of the string. (Hirohito Higashi) Use an enum for the type.

func Test_yank_put_clipboard()
  new
  call setline(1, ['a', 'b', 'c'])
  set clipboard=unnamed
  g/^/normal yyp
  call assert_equal(['a', 'a', 'b', 'b', 'c', 'c'], getline(1, 6))

  set clipboard&
  bwipe!
endfunc

func Test_nested_global()
  new
  call setline(1, ['nothing', 'found', 'found bad', 'bad'])
  call assert_fails('g/found/3v/bad/s/^/++/', 'E147')
  g/found/v/bad/s/^/++/
  call assert_equal(['nothing', '++found', 'found bad', 'bad'], getline(1, 4))
  bwipe!
endfunc