patch 8.1.1035: prop_remove() second argument is not optional commit https://github.com/vim/vim/commit/0a2f578e22de7e4d82075578afdd5fc2d2dd8134 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Mar 22 13:20:43 2019 +0100 patch 8.1.1035: prop_remove() second argument is not optional Problem: prop_remove() second argument is not optional. Solution: Fix argument count. Use "buf" instead of "curbuf". (closes https://github.com/vim/vim/issues/4147)

function Test_Comparators()
  try
    let oldisident=&isident
    set isident+=#
    call assert_equal(1, 1 is#1)
  finally
    let &isident=oldisident
  endtry
endfunction