patch 8.0.1237: ":set scroll&" often gives an error commit https://github.com/vim/vim/commit/af2d20c6285c1d2973e3d9b5e8f727e3ed180493 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Oct 29 15:26:57 2017 +0100 patch 8.0.1237: ":set scroll&" often gives an error Problem: ":set scroll&" often gives an error. Solution: Don't use a fixed default value, use half the window height. Add a test. (Ozaki Kiichi, closes #2104)

" Vim script used in test_eval.in.  Needed for script-local function.

func! s:Testje()
  return "foo"
endfunc
let Bar = function('s:Testje')
$put ='s:Testje exists: ' . exists('s:Testje')
$put ='func s:Testje exists: ' . exists('*s:Testje')
$put ='Bar exists: ' . exists('Bar')
$put ='func Bar exists: ' . exists('*Bar')