patch 8.1.0814: :mksession cannot handle a very long 'runtimepath' commit https://github.com/vim/vim/commit/ed18f2c03ae4786b489943cb575bb781a70356e4 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jan 24 20:30:52 2019 +0100 patch 8.1.0814: :mksession cannot handle a very long 'runtimepath' Problem: :mksession cannot handle a very long 'runtimepath'. (Timothy Madden) Solution: Expand each part separately, instead of the whole option at once. (Christian Brabandt, closes #3466)

" Tests for the :set command

function Test_set_backslash()
  let isk_save = &isk

  set isk=a,b,c
  set isk+=d
  call assert_equal('a,b,c,d', &isk)
  set isk+=\\,e
  call assert_equal('a,b,c,d,\,e', &isk)
  set isk-=e
  call assert_equal('a,b,c,d,\', &isk)
  set isk-=\\
  call assert_equal('a,b,c,d', &isk)

  let &isk = isk_save
endfunction

function Test_set_add()
  let wig_save = &wig

  set wildignore=*.png,
  set wildignore+=*.jpg
  call assert_equal('*.png,*.jpg', &wig)

  let &wig = wig_save
endfunction