patch 8.0.1604: paste test may fail if $DISPLAY is not set commit https://github.com/vim/vim/commit/a903472cfa048e7a29d9c6ed0945ef03e48c6a08 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Mar 13 15:43:46 2018 +0100 patch 8.0.1604: paste test may fail if $DISPLAY is not set Problem: Paste test may fail if $DISPLAY is not set. Solution: Add WorkingClipboard() and use it in the paste test.

" Tests for complicated + argument to :edit command
function Test_edit()
  call writefile(["foo|bar"], "Xfile1") 
  call writefile(["foo/bar"], "Xfile2") 
  edit +1|s/|/PIPE/|w Xfile1| e Xfile2|1 | s/\//SLASH/|w
  call assert_equal(["fooPIPEbar"], readfile("Xfile1"))
  call assert_equal(["fooSLASHbar"], readfile("Xfile2"))
  call delete('Xfile1')
  call delete('Xfile2')
endfunction