patch 8.0.1749: VMS: 100% CPU use, redefining mch_open() fails commit https://github.com/vim/vim/commit/6537c421bb626ee92a2487a543e6287d33461bd0 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Apr 23 20:46:16 2018 +0200 patch 8.0.1749: VMS: 100% CPU use, redefining mch_open() fails Problem: VMS: 100% CPU use, redefining mch_open() and mch_fopen() fails. Solution: Do not wait indefinitely in RealWaitForChar(). (Neil Rieck) Do not redefine mch_open() and mch_fopen() on VMS. (Zoltan Arpadffy)

" 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