patch 8.0.1403: using freed buffer in grep command commit https://github.com/vim/vim/commit/4fb921e388b9a042573ab06cce36e92874954197 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Dec 18 15:33:00 2017 +0100 patch 8.0.1403: using freed buffer in grep command Problem: Using freed buffer in grep command. (gy741, Dominique Pelle) Solution: Lock the dummy buffer to avoid autocommands wiping it out.

" 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