patch 8.0.1441: using ":undo 0" leaves undo in wrong state commit https://github.com/vim/vim/commit/ce46d934af35d0f774be7f996001db03cf0b894a Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jan 30 22:46:06 2018 +0100 patch 8.0.1441: using ":undo 0" leaves undo in wrong state Problem: Using ":undo 0" leaves undo in wrong state. Solution: Instead of searching for state 1 and go above, just use the start. (Ozaki Kiichi, closes #2595)

" 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